1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.os; 18 19 import android.Manifest; 20 import android.annotation.FlaggedApi; 21 import android.annotation.IntDef; 22 import android.annotation.NonNull; 23 import android.annotation.Nullable; 24 import android.annotation.RequiresPermission; 25 import android.annotation.SuppressAutoDoc; 26 import android.annotation.SuppressLint; 27 import android.annotation.SystemApi; 28 import android.annotation.TestApi; 29 import android.app.ActivityThread; 30 import android.app.Application; 31 import android.compat.annotation.UnsupportedAppUsage; 32 import android.content.Context; 33 import android.ravenwood.annotation.RavenwoodKeepWholeClass; 34 import android.sdk.Flags; 35 import android.sysprop.BackportedFixesProperties; 36 import android.sysprop.DeviceProperties; 37 import android.sysprop.SocProperties; 38 import android.sysprop.TelephonyProperties; 39 import android.text.TextUtils; 40 import android.util.ArraySet; 41 import android.util.Slog; 42 import android.view.View; 43 44 import com.android.internal.util.FrameworkStatsLog; 45 46 import dalvik.system.VMRuntime; 47 48 import java.lang.annotation.Retention; 49 import java.lang.annotation.RetentionPolicy; 50 import java.util.ArrayList; 51 import java.util.List; 52 import java.util.Objects; 53 import java.util.Set; 54 import java.util.stream.Collectors; 55 56 /** 57 * Information about the current build, extracted from system properties. 58 */ 59 @RavenwoodKeepWholeClass 60 public class Build { 61 private static final String TAG = "Build"; 62 63 /** Value used for when a build property is unknown. */ 64 public static final String UNKNOWN = "unknown"; 65 66 /** Either a changelist number, or a label like "M4-rc20". */ 67 public static final String ID = getString("ro.build.id"); 68 69 /** A build ID string meant for displaying to the user */ 70 public static final String DISPLAY = getString("ro.build.display.id"); 71 72 /** The name of the overall product. */ 73 public static final String PRODUCT = getString("ro.product.name"); 74 75 /** 76 * The product name for attestation. In non-default builds (like the AOSP build) the value of 77 * the 'PRODUCT' system property may be different to the one provisioned to KeyMint, 78 * and Keymint attestation would still attest to the product name which was provisioned. 79 * @hide 80 */ 81 @Nullable 82 @TestApi 83 public static final String PRODUCT_FOR_ATTESTATION = getVendorDeviceIdProperty("name"); 84 85 /** The name of the industrial design. */ 86 public static final String DEVICE = getString("ro.product.device"); 87 88 /** 89 * The device name for attestation. In non-default builds (like the AOSP build) the value of 90 * the 'DEVICE' system property may be different to the one provisioned to KeyMint, 91 * and Keymint attestation would still attest to the device name which was provisioned. 92 * @hide 93 */ 94 @Nullable 95 @TestApi 96 public static final String DEVICE_FOR_ATTESTATION = 97 getVendorDeviceIdProperty("device"); 98 99 /** The name of the underlying board, like "goldfish". */ 100 public static final String BOARD = getString("ro.product.board"); 101 102 /** 103 * The name of the instruction set (CPU type + ABI convention) of native code. 104 * 105 * @deprecated Use {@link #SUPPORTED_ABIS} instead. 106 */ 107 @Deprecated 108 public static final String CPU_ABI; 109 110 /** 111 * The name of the second instruction set (CPU type + ABI convention) of native code. 112 * 113 * @deprecated Use {@link #SUPPORTED_ABIS} instead. 114 */ 115 @Deprecated 116 public static final String CPU_ABI2; 117 118 /** The manufacturer of the product/hardware. */ 119 public static final String MANUFACTURER = getString("ro.product.manufacturer"); 120 121 /** 122 * The manufacturer name for attestation. In non-default builds (like the AOSP build) the value 123 * of the 'MANUFACTURER' system property may be different to the one provisioned to KeyMint, 124 * and Keymint attestation would still attest to the manufacturer which was provisioned. 125 * @hide 126 */ 127 @Nullable 128 @TestApi 129 public static final String MANUFACTURER_FOR_ATTESTATION = 130 getVendorDeviceIdProperty("manufacturer"); 131 132 /** The consumer-visible brand with which the product/hardware will be associated, if any. */ 133 public static final String BRAND = getString("ro.product.brand"); 134 135 /** 136 * The product brand for attestation. In non-default builds (like the AOSP build) the value of 137 * the 'BRAND' system property may be different to the one provisioned to KeyMint, 138 * and Keymint attestation would still attest to the product brand which was provisioned. 139 * @hide 140 */ 141 @Nullable 142 @TestApi 143 public static final String BRAND_FOR_ATTESTATION = getVendorDeviceIdProperty("brand"); 144 145 /** The end-user-visible name for the end product. */ 146 public static final String MODEL = getString("ro.product.model"); 147 148 /** 149 * The product model for attestation. In non-default builds (like the AOSP build) the value of 150 * the 'MODEL' system property may be different to the one provisioned to KeyMint, 151 * and Keymint attestation would still attest to the product model which was provisioned. 152 * @hide 153 */ 154 @Nullable 155 @TestApi 156 public static final String MODEL_FOR_ATTESTATION = getVendorDeviceIdProperty("model"); 157 158 /** The manufacturer of the device's primary system-on-chip. */ 159 @NonNull 160 public static final String SOC_MANUFACTURER = SocProperties.soc_manufacturer().orElse(UNKNOWN); 161 162 /** The model name of the device's primary system-on-chip. */ 163 @NonNull 164 public static final String SOC_MODEL = SocProperties.soc_model().orElse(UNKNOWN); 165 166 /** The system bootloader version number. */ 167 public static final String BOOTLOADER = getString("ro.bootloader"); 168 169 /** 170 * The radio firmware version number. 171 * 172 * @deprecated The radio firmware version is frequently not 173 * available when this class is initialized, leading to a blank or 174 * "unknown" value for this string. Use 175 * {@link #getRadioVersion} instead. 176 */ 177 @Deprecated 178 public static final String RADIO = joinListOrElse( 179 TelephonyProperties.baseband_version(), UNKNOWN); 180 181 /** The name of the hardware (from the kernel command line or /proc). */ 182 public static final String HARDWARE = getString("ro.hardware"); 183 184 /** 185 * The SKU of the hardware (from the kernel command line). 186 * 187 * <p>The SKU is reported by the bootloader to configure system software features. 188 * If no value is supplied by the bootloader, this is reported as {@link #UNKNOWN}. 189 190 */ 191 @NonNull 192 public static final String SKU = getString("ro.boot.hardware.sku"); 193 194 /** 195 * The SKU of the device as set by the original design manufacturer (ODM). 196 * 197 * <p>This is a runtime-initialized property set during startup to configure device 198 * services. If no value is set, this is reported as {@link #UNKNOWN}. 199 * 200 * <p>The ODM SKU may have multiple variants for the same system SKU in case a manufacturer 201 * produces variants of the same design. For example, the same build may be released with 202 * variations in physical keyboard and/or display hardware, each with a different ODM SKU. 203 */ 204 @NonNull 205 public static final String ODM_SKU = getString("ro.boot.product.hardware.sku"); 206 207 /** 208 * Whether this build was for an emulator device. 209 * @hide 210 */ 211 @UnsupportedAppUsage 212 @TestApi 213 public static final boolean IS_EMULATOR = getString("ro.boot.qemu").equals("1"); 214 215 /** 216 * A hardware serial number, if available. Alphanumeric only, case-insensitive. 217 * This field is always set to {@link Build#UNKNOWN}. 218 * 219 * @deprecated Use {@link #getSerial()} instead. 220 **/ 221 @Deprecated 222 // IMPORTANT: This field should be initialized via a function call to 223 // prevent its value being inlined in the app during compilation because 224 // we will later set it to the value based on the app's target SDK. 225 public static final String SERIAL = getString("no.such.thing"); 226 227 /** 228 * Gets the hardware serial number, if available. 229 * 230 * <p class="note"><b>Note:</b> Root access may allow you to modify device identifiers, such as 231 * the hardware serial number. If you change these identifiers, you can not use 232 * <a href="/training/articles/security-key-attestation.html">key attestation</a> to obtain 233 * proof of the device's original identifiers. KeyMint will reject an ID attestation request 234 * if the identifiers provided by the frameworks do not match the identifiers it was 235 * provisioned with. 236 * 237 * <p>Starting with API level 29, persistent device identifiers are guarded behind additional 238 * restrictions, and apps are recommended to use resettable identifiers (see <a 239 * href="/training/articles/user-data-ids">Best practices for unique identifiers</a>). This 240 * method can be invoked if one of the following requirements is met: 241 * <ul> 242 * <li>If the calling app has been granted the READ_PRIVILEGED_PHONE_STATE permission; this 243 * is a privileged permission that can only be granted to apps preloaded on the device. 244 * <li>If the calling app has carrier privileges (see {@link 245 * android.telephony.TelephonyManager#hasCarrierPrivileges}) on any active subscription. 246 * <li>If the calling app is the default SMS role holder (see {@link 247 * android.app.role.RoleManager#isRoleHeld(String)}). 248 * <li>If the calling app is the device owner of a fully-managed device, a profile 249 * owner of an organization-owned device, or their delegates (see {@link 250 * android.app.admin.DevicePolicyManager#getEnrollmentSpecificId()}). 251 * </ul> 252 * 253 * <p>If the calling app does not meet one of these requirements then this method will behave 254 * as follows: 255 * 256 * <ul> 257 * <li>If the calling app's target SDK is API level 28 or lower and the app has the 258 * READ_PHONE_STATE permission then {@link Build#UNKNOWN} is returned.</li> 259 * <li>If the calling app's target SDK is API level 28 or lower and the app does not have 260 * the READ_PHONE_STATE permission, or if the calling app is targeting API level 29 or 261 * higher, then a SecurityException is thrown.</li> 262 * </ul> 263 * 264 * @return The serial number if specified. 265 */ 266 @SuppressAutoDoc // No support for device / profile owner. 267 @RequiresPermission(Manifest.permission.READ_PRIVILEGED_PHONE_STATE) getSerial()268 public static String getSerial() { 269 IDeviceIdentifiersPolicyService service = IDeviceIdentifiersPolicyService.Stub 270 .asInterface(ServiceManager.getService(Context.DEVICE_IDENTIFIERS_SERVICE)); 271 try { 272 Application application = ActivityThread.currentApplication(); 273 String callingPackage = application != null ? application.getPackageName() : null; 274 return service.getSerialForPackage(callingPackage, null); 275 } catch (RemoteException e) { 276 e.rethrowFromSystemServer(); 277 } 278 return UNKNOWN; 279 } 280 281 /** 282 * An ordered list of ABIs supported by this device. The most preferred ABI is the first 283 * element in the list. 284 * 285 * See {@link #SUPPORTED_32_BIT_ABIS} and {@link #SUPPORTED_64_BIT_ABIS}. 286 */ 287 public static final String[] SUPPORTED_ABIS = getStringList("ro.product.cpu.abilist", ","); 288 289 /** 290 * An ordered list of <b>32 bit</b> ABIs supported by this device. The most preferred ABI 291 * is the first element in the list. 292 * 293 * See {@link #SUPPORTED_ABIS} and {@link #SUPPORTED_64_BIT_ABIS}. 294 */ 295 public static final String[] SUPPORTED_32_BIT_ABIS = 296 getStringList("ro.product.cpu.abilist32", ","); 297 298 /** 299 * An ordered list of <b>64 bit</b> ABIs supported by this device. The most preferred ABI 300 * is the first element in the list. 301 * 302 * See {@link #SUPPORTED_ABIS} and {@link #SUPPORTED_32_BIT_ABIS}. 303 */ 304 public static final String[] SUPPORTED_64_BIT_ABIS = 305 getStringList("ro.product.cpu.abilist64", ","); 306 307 /** {@hide} */ 308 @TestApi is64BitAbi(String abi)309 public static boolean is64BitAbi(String abi) { 310 return VMRuntime.is64BitAbi(abi); 311 } 312 313 static { 314 /* 315 * Adjusts CPU_ABI and CPU_ABI2 depending on whether or not a given process is 64 bit. 316 * 32 bit processes will always see 32 bit ABIs in these fields for backward 317 * compatibility. 318 */ 319 final String[] abiList; 320 if (android.os.Process.is64Bit()) { 321 abiList = SUPPORTED_64_BIT_ABIS; 322 } else { 323 abiList = SUPPORTED_32_BIT_ABIS; 324 } 325 326 CPU_ABI = abiList[0]; 327 if (abiList.length > 1) { 328 CPU_ABI2 = abiList[1]; 329 } else { 330 CPU_ABI2 = ""; 331 } 332 } 333 334 /** Various version strings. */ 335 public static class VERSION { 336 /** 337 * The internal value used by the underlying source control to 338 * represent this build. E.g., a perforce changelist number 339 * or a git hash. 340 */ 341 public static final String INCREMENTAL = getString("ro.build.version.incremental"); 342 343 /** 344 * The user-visible version string. E.g., "1.0" or "3.4b5" or "bananas". 345 * 346 * This field is an opaque string. Do not assume that its value 347 * has any particular structure or that values of RELEASE from 348 * different releases can be somehow ordered. 349 */ 350 public static final String RELEASE = getString("ro.build.version.release"); 351 352 /** 353 * The version string. May be {@link #RELEASE} or {@link #CODENAME} if 354 * not a final release build. 355 */ 356 @NonNull public static final String RELEASE_OR_CODENAME = getString( 357 "ro.build.version.release_or_codename"); 358 359 /** 360 * The version string we show to the user; may be {@link #RELEASE} or 361 * a descriptive string if not a final release build. 362 */ 363 @NonNull public static final String RELEASE_OR_PREVIEW_DISPLAY = getString( 364 "ro.build.version.release_or_preview_display"); 365 366 /** 367 * The base OS build the product is based on. 368 */ 369 public static final String BASE_OS = SystemProperties.get("ro.build.version.base_os", ""); 370 371 /** 372 * The user-visible security patch level. This value represents the date when the device 373 * most recently applied a security patch. 374 */ 375 public static final String SECURITY_PATCH = SystemProperties.get( 376 "ro.build.version.security_patch", ""); 377 378 /** 379 * The media performance class of the device or 0 if none. 380 * <p> 381 * If this value is not <code>0</code>, the device conforms to the media performance class 382 * definition of the SDK version of this value. This value never changes while a device is 383 * booted, but it may increase when the hardware manufacturer provides an OTA update. 384 * <p> 385 * Possible non-zero values are defined in {@link Build.VERSION_CODES} starting with 386 * {@link Build.VERSION_CODES#R}. 387 */ 388 public static final int MEDIA_PERFORMANCE_CLASS = 389 DeviceProperties.media_performance_class().orElse(0); 390 391 /** 392 * The user-visible SDK version of the framework in its raw String 393 * representation; use {@link #SDK_INT} instead. 394 * 395 * @deprecated Use {@link #SDK_INT} to easily get this as an integer. 396 */ 397 @Deprecated 398 public static final String SDK = getString("ro.build.version.sdk"); 399 400 /** 401 * The SDK version of the software currently running on this hardware 402 * device. This value never changes while a device is booted, but it may 403 * increase when the hardware manufacturer provides an OTA update. 404 * <p> 405 * This constant records the major version of Android. Use {@link 406 * #SDK_INT_FULL} if you need to consider the minor version of Android 407 * as well. 408 * <p> 409 * Possible values are defined in {@link Build.VERSION_CODES}. 410 * @see #SDK_INT_FULL 411 */ 412 public static final int SDK_INT = SystemProperties.getInt( 413 "ro.build.version.sdk", 0); 414 415 /** 416 * The major and minor SDK version of the software currently running on 417 * this hardware device. This value never changes while a device is 418 * booted, but it may increase when the hardware manufacturer provides 419 * an OTA update. 420 * <p> 421 * <code>SDK_INT</code> is increased on new Android dessert releases, 422 * also called major releases. Between these, Android may also release 423 * minor releases where <code>SDK_INT</code> remains unchanged. Minor 424 * releases can add new APIs, and have stricter guarantees around 425 * backwards compatibility (e.g. no changes gated by 426 * <code>targetSdkVersion</code>) compared to major releases. 427 * <p> 428 * <code>SDK_INT_FULL</code> is increased on every release. 429 * <p> 430 * Possible values are defined in {@link 431 * android.os.Build.VERSION_CODES_FULL}. 432 */ 433 @FlaggedApi(Flags.FLAG_MAJOR_MINOR_VERSIONING_SCHEME) 434 public static final int SDK_INT_FULL = parseFullVersion(SystemProperties.get( 435 "ro.build.version.sdk_full", "")); 436 437 /** 438 * The SDK version of the software that <em>initially</em> shipped on 439 * this hardware device. It <em>never</em> changes during the lifetime 440 * of the device, even when {@link #SDK_INT} increases due to an OTA 441 * update. 442 * <p> 443 * Possible values are defined in {@link Build.VERSION_CODES}. 444 * 445 * @see #SDK_INT 446 * @hide 447 */ 448 @SystemApi(client = SystemApi.Client.MODULE_LIBRARIES) 449 @TestApi 450 public static final int DEVICE_INITIAL_SDK_INT = SystemProperties 451 .getInt("ro.product.first_api_level", 0); 452 453 /** 454 * The developer preview revision of a prerelease SDK. This value will always 455 * be <code>0</code> on production platform builds/devices. 456 * 457 * <p>When this value is nonzero, any new API added since the last 458 * officially published {@link #SDK_INT API level} is only guaranteed to be present 459 * on that specific preview revision. For example, an API <code>Activity.fooBar()</code> 460 * might be present in preview revision 1 but renamed or removed entirely in 461 * preview revision 2, which may cause an app attempting to call it to crash 462 * at runtime.</p> 463 * 464 * <p>Experimental apps targeting preview APIs should check this value for 465 * equality (<code>==</code>) with the preview SDK revision they were built for 466 * before using any prerelease platform APIs. Apps that detect a preview SDK revision 467 * other than the specific one they expect should fall back to using APIs from 468 * the previously published API level only to avoid unwanted runtime exceptions. 469 * </p> 470 */ 471 public static final int PREVIEW_SDK_INT = SystemProperties.getInt( 472 "ro.build.version.preview_sdk", 0); 473 474 /** 475 * The SDK fingerprint for a given prerelease SDK. This value will always be 476 * {@code REL} on production platform builds/devices. 477 * 478 * <p>When this value is not {@code REL}, it contains a string fingerprint of the API 479 * surface exposed by the preview SDK. Preview platforms with different API surfaces 480 * will have different {@code PREVIEW_SDK_FINGERPRINT}. 481 * 482 * <p>This attribute is intended for use by installers for finer grained targeting of 483 * packages. Applications targeting preview APIs should not use this field and should 484 * instead use {@code PREVIEW_SDK_INT} or use reflection or other runtime checks to 485 * detect the presence of an API or guard themselves against unexpected runtime 486 * behavior. 487 * 488 * @hide 489 */ 490 @SystemApi 491 @NonNull public static final String PREVIEW_SDK_FINGERPRINT = SystemProperties.get( 492 "ro.build.version.preview_sdk_fingerprint", "REL"); 493 494 /** 495 * The current development codename, or the string "REL" if this is 496 * a release build. 497 */ 498 public static final String CODENAME = getString("ro.build.version.codename"); 499 500 /** 501 * All known codenames that are present in {@link VERSION_CODES}. 502 * 503 * <p>This includes in development codenames as well, i.e. if {@link #CODENAME} is not "REL" 504 * then the value of that is present in this set. 505 * 506 * <p>If a particular string is not present in this set, then it is either not a codename 507 * or a codename for a future release. For example, during Android R development, "Tiramisu" 508 * was not a known codename. 509 * 510 * @hide 511 */ 512 @SystemApi 513 @NonNull public static final Set<String> KNOWN_CODENAMES = 514 new ArraySet<>(getStringList("ro.build.version.known_codenames", ",")); 515 516 private static final String[] ALL_CODENAMES 517 = getStringList("ro.build.version.all_codenames", ","); 518 519 /** 520 * @hide 521 */ 522 @UnsupportedAppUsage 523 @TestApi 524 public static final String[] ACTIVE_CODENAMES = "REL".equals(ALL_CODENAMES[0]) 525 ? new String[0] : ALL_CODENAMES; 526 527 /** 528 * The SDK version to use when accessing resources. 529 * Use the current SDK version code. For every active development codename 530 * we are operating under, we bump the assumed resource platform version by 1. 531 * @hide 532 */ 533 @TestApi 534 public static final int RESOURCES_SDK_INT = SDK_INT + ACTIVE_CODENAMES.length; 535 536 /** 537 * The current lowest supported value of app target SDK. Applications targeting 538 * lower values may not function on devices running this SDK version. Its possible 539 * values are defined in {@link Build.VERSION_CODES}. 540 * 541 * @hide 542 */ 543 public static final int MIN_SUPPORTED_TARGET_SDK_INT = SystemProperties.getInt( 544 "ro.build.version.min_supported_target_sdk", 0); 545 } 546 547 /** 548 * Enumeration of the currently known SDK version codes. These are the 549 * values that can be found in {@link VERSION#SDK}. Version numbers 550 * increment monotonically with each official platform release. 551 */ 552 public static class VERSION_CODES { 553 /** 554 * Magic version number for a current development build, which has 555 * not yet turned into an official release. 556 */ 557 // This must match VMRuntime.SDK_VERSION_CUR_DEVELOPMENT. 558 public static final int CUR_DEVELOPMENT = 10000; 559 560 /** 561 * The original, first, version of Android. Yay! 562 * 563 * <p>Released publicly as Android 1.0 in September 2008. 564 */ 565 public static final int BASE = 1; 566 567 /** 568 * First Android update. 569 * 570 * <p>Released publicly as Android 1.1 in February 2009. 571 */ 572 public static final int BASE_1_1 = 2; 573 574 /** 575 * C. 576 * 577 * <p>Released publicly as Android 1.5 in April 2009. 578 */ 579 public static final int CUPCAKE = 3; 580 581 /** 582 * D. 583 * 584 * <p>Released publicly as Android 1.6 in September 2009. 585 * <p>Applications targeting this or a later release will get these 586 * new changes in behavior:</p> 587 * <ul> 588 * <li> They must explicitly request the 589 * {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} permission to be 590 * able to modify the contents of the SD card. (Apps targeting 591 * earlier versions will always request the permission.) 592 * <li> They must explicitly request the 593 * {@link android.Manifest.permission#READ_PHONE_STATE} permission to be 594 * able to be able to retrieve phone state info. (Apps targeting 595 * earlier versions will always request the permission.) 596 * <li> They are assumed to support different screen densities and 597 * sizes. (Apps targeting earlier versions are assumed to only support 598 * medium density normal size screens unless otherwise indicated). 599 * They can still explicitly specify screen support either way with the 600 * supports-screens manifest tag. 601 * <li> {@link android.widget.TabHost} will use the new dark tab 602 * background design. 603 * </ul> 604 */ 605 public static final int DONUT = 4; 606 607 /** 608 * E. 609 * 610 * <p>Released publicly as Android 2.0 in October 2009. 611 * <p>Applications targeting this or a later release will get these 612 * new changes in behavior:</p> 613 * <ul> 614 * <li> The {@link android.app.Service#onStartCommand 615 * Service.onStartCommand} function will return the new 616 * {@link android.app.Service#START_STICKY} behavior instead of the 617 * old compatibility {@link android.app.Service#START_STICKY_COMPATIBILITY}. 618 * <li> The {@link android.app.Activity} class will now execute back 619 * key presses on the key up instead of key down, to be able to detect 620 * canceled presses from virtual keys. 621 * <li> The {@link android.widget.TabWidget} class will use a new color scheme 622 * for tabs. In the new scheme, the foreground tab has a medium gray background 623 * the background tabs have a dark gray background. 624 * </ul> 625 */ 626 public static final int ECLAIR = 5; 627 628 /** 629 * E incremental update. 630 * 631 * <p>Released publicly as Android 2.0.1 in December 2009. 632 */ 633 public static final int ECLAIR_0_1 = 6; 634 635 /** 636 * E MR1. 637 * 638 * <p>Released publicly as Android 2.1 in January 2010. 639 */ 640 public static final int ECLAIR_MR1 = 7; 641 642 /** 643 * F. 644 * 645 * <p>Released publicly as Android 2.2 in May 2010. 646 */ 647 public static final int FROYO = 8; 648 649 /** 650 * G. 651 * 652 * <p>Released publicly as Android 2.3 in December 2010. 653 * <p>Applications targeting this or a later release will get these 654 * new changes in behavior:</p> 655 * <ul> 656 * <li> The application's notification icons will be shown on the new 657 * dark status bar background, so must be visible in this situation. 658 * </ul> 659 */ 660 public static final int GINGERBREAD = 9; 661 662 /** 663 * G MR1. 664 * 665 * <p>Released publicly as Android 2.3.3 in February 2011. 666 */ 667 public static final int GINGERBREAD_MR1 = 10; 668 669 /** 670 * H. 671 * 672 * <p>Released publicly as Android 3.0 in February 2011. 673 * <p>Applications targeting this or a later release will get these 674 * new changes in behavior:</p> 675 * <ul> 676 * <li> The default theme for applications is now dark holographic: 677 * {@link android.R.style#Theme_Holo}. 678 * <li> On large screen devices that do not have a physical menu 679 * button, the soft (compatibility) menu is disabled. 680 * <li> The activity lifecycle has changed slightly as per 681 * {@link android.app.Activity}. 682 * <li> An application will crash if it does not call through 683 * to the super implementation of its 684 * {@link android.app.Activity#onPause Activity.onPause()} method. 685 * <li> When an application requires a permission to access one of 686 * its components (activity, receiver, service, provider), this 687 * permission is no longer enforced when the application wants to 688 * access its own component. This means it can require a permission 689 * on a component that it does not itself hold and still access that 690 * component. 691 * <li> {@link android.content.Context#getSharedPreferences 692 * Context.getSharedPreferences()} will not automatically reload 693 * the preferences if they have changed on storage, unless 694 * {@link android.content.Context#MODE_MULTI_PROCESS} is used. 695 * <li> {@link android.view.ViewGroup#setMotionEventSplittingEnabled} 696 * will default to true. 697 * <li> {@link android.view.WindowManager.LayoutParams#FLAG_SPLIT_TOUCH} 698 * is enabled by default on windows. 699 * <li> {@link android.widget.PopupWindow#isSplitTouchEnabled() 700 * PopupWindow.isSplitTouchEnabled()} will return true by default. 701 * <li> {@link android.widget.GridView} and {@link android.widget.ListView} 702 * will use {@link android.view.View#setActivated View.setActivated} 703 * for selected items if they do not implement {@link android.widget.Checkable}. 704 * <li> {@link android.widget.Scroller} will be constructed with 705 * "flywheel" behavior enabled by default. 706 * </ul> 707 */ 708 public static final int HONEYCOMB = 11; 709 710 /** 711 * H MR1. 712 * 713 * <p>Released publicly as Android 3.1 in May 2011. 714 */ 715 public static final int HONEYCOMB_MR1 = 12; 716 717 /** 718 * H MR2. 719 * 720 * <p>Released publicly as Android 3.2 in July 2011. 721 * <p>Update to Honeycomb MR1 to support 7 inch tablets, improve 722 * screen compatibility mode, etc.</p> 723 * 724 * <p>As of this version, applications that don't say whether they 725 * support XLARGE screens will be assumed to do so only if they target 726 * {@link #HONEYCOMB} or later; it had been {@link #GINGERBREAD} or 727 * later. Applications that don't support a screen size at least as 728 * large as the current screen will provide the user with a UI to 729 * switch them in to screen size compatibility mode.</p> 730 * 731 * <p>This version introduces new screen size resource qualifiers 732 * based on the screen size in dp: see 733 * {@link android.content.res.Configuration#screenWidthDp}, 734 * {@link android.content.res.Configuration#screenHeightDp}, and 735 * {@link android.content.res.Configuration#smallestScreenWidthDp}. 736 * Supplying these in <supports-screens> as per 737 * {@link android.content.pm.ApplicationInfo#requiresSmallestWidthDp}, 738 * {@link android.content.pm.ApplicationInfo#compatibleWidthLimitDp}, and 739 * {@link android.content.pm.ApplicationInfo#largestWidthLimitDp} is 740 * preferred over the older screen size buckets and for older devices 741 * the appropriate buckets will be inferred from them.</p> 742 * 743 * <p>Applications targeting this or a later release will get these 744 * new changes in behavior:</p> 745 * <ul> 746 * <li><p>New {@link android.content.pm.PackageManager#FEATURE_SCREEN_PORTRAIT} 747 * and {@link android.content.pm.PackageManager#FEATURE_SCREEN_LANDSCAPE} 748 * features were introduced in this release. Applications that target 749 * previous platform versions are assumed to require both portrait and 750 * landscape support in the device; when targeting Honeycomb MR1 or 751 * greater the application is responsible for specifying any specific 752 * orientation it requires.</p> 753 * <li><p>{@link android.os.AsyncTask} will use the serial executor 754 * by default when calling {@link android.os.AsyncTask#execute}.</p> 755 * <li><p>{@link android.content.pm.ActivityInfo#configChanges 756 * ActivityInfo.configChanges} will have the 757 * {@link android.content.pm.ActivityInfo#CONFIG_SCREEN_SIZE} and 758 * {@link android.content.pm.ActivityInfo#CONFIG_SMALLEST_SCREEN_SIZE} 759 * bits set; these need to be cleared for older applications because 760 * some developers have done absolute comparisons against this value 761 * instead of correctly masking the bits they are interested in. 762 * </ul> 763 */ 764 public static final int HONEYCOMB_MR2 = 13; 765 766 /** 767 * I. 768 * 769 * <p>Released publicly as Android 4.0 in October 2011. 770 * <p>Applications targeting this or a later release will get these 771 * new changes in behavior:</p> 772 * <ul> 773 * <li> For devices without a dedicated menu key, the software compatibility 774 * menu key will not be shown even on phones. By targeting Ice Cream Sandwich 775 * or later, your UI must always have its own menu UI affordance if needed, 776 * on both tablets and phones. The ActionBar will take care of this for you. 777 * <li> 2d drawing hardware acceleration is now turned on by default. 778 * You can use 779 * {@link android.R.attr#hardwareAccelerated android:hardwareAccelerated} 780 * to turn it off if needed, although this is strongly discouraged since 781 * it will result in poor performance on larger screen devices. 782 * <li> The default theme for applications is now the "device default" theme: 783 * {@link android.R.style#Theme_DeviceDefault}. This may be the 784 * holo dark theme or a different dark theme defined by the specific device. 785 * The {@link android.R.style#Theme_Holo} family must not be modified 786 * for a device to be considered compatible. Applications that explicitly 787 * request a theme from the Holo family will be guaranteed that these themes 788 * will not change character within the same platform version. Applications 789 * that wish to blend in with the device should use a theme from the 790 * {@link android.R.style#Theme_DeviceDefault} family. 791 * <li> Managed cursors can now throw an exception if you directly close 792 * the cursor yourself without stopping the management of it; previously failures 793 * would be silently ignored. 794 * <li> The fadingEdge attribute on views will be ignored (fading edges is no 795 * longer a standard part of the UI). A new requiresFadingEdge attribute allows 796 * applications to still force fading edges on for special cases. 797 * <li> {@link android.content.Context#bindService Context.bindService()} 798 * will not automatically add in {@link android.content.Context#BIND_WAIVE_PRIORITY}. 799 * <li> App Widgets will have standard padding automatically added around 800 * them, rather than relying on the padding being baked into the widget itself. 801 * <li> An exception will be thrown if you try to change the type of a 802 * window after it has been added to the window manager. Previously this 803 * would result in random incorrect behavior. 804 * <li> {@link android.view.animation.AnimationSet} will parse out 805 * the duration, fillBefore, fillAfter, repeatMode, and startOffset 806 * XML attributes that are defined. 807 * <li> {@link android.app.ActionBar#setHomeButtonEnabled 808 * ActionBar.setHomeButtonEnabled()} is false by default. 809 * </ul> 810 */ 811 public static final int ICE_CREAM_SANDWICH = 14; 812 813 /** 814 * I MR1. 815 * 816 * <p>Released publicly as Android 4.03 in December 2011. 817 */ 818 public static final int ICE_CREAM_SANDWICH_MR1 = 15; 819 820 /** 821 * J. 822 * 823 * <p>Released publicly as Android 4.1 in July 2012. 824 * <p>Applications targeting this or a later release will get these 825 * new changes in behavior:</p> 826 * <ul> 827 * <li> You must explicitly request the {@link android.Manifest.permission#READ_CALL_LOG} 828 * and/or {@link android.Manifest.permission#WRITE_CALL_LOG} permissions; 829 * access to the call log is no longer implicitly provided through 830 * {@link android.Manifest.permission#READ_CONTACTS} and 831 * {@link android.Manifest.permission#WRITE_CONTACTS}. 832 * <li> {@link android.widget.RemoteViews} will throw an exception if 833 * setting an onClick handler for views being generated by a 834 * {@link android.widget.RemoteViewsService} for a collection container; 835 * previously this just resulted in a warning log message. 836 * <li> New {@link android.app.ActionBar} policy for embedded tabs: 837 * embedded tabs are now always stacked in the action bar when in portrait 838 * mode, regardless of the size of the screen. 839 * <li> {@link android.webkit.WebSettings#setAllowFileAccessFromFileURLs(boolean) 840 * WebSettings.setAllowFileAccessFromFileURLs} and 841 * {@link android.webkit.WebSettings#setAllowUniversalAccessFromFileURLs(boolean) 842 * WebSettings.setAllowUniversalAccessFromFileURLs} default to false. 843 * <li> Calls to {@link android.content.pm.PackageManager#setComponentEnabledSetting 844 * PackageManager.setComponentEnabledSetting} will now throw an 845 * IllegalArgumentException if the given component class name does not 846 * exist in the application's manifest. 847 * <li> {@code NfcAdapter.setNdefPushMessage}, 848 * {@code NfcAdapter.setNdefPushMessageCallback} and 849 * {@code NfcAdapter.setOnNdefPushCompleteCallback} will throw 850 * IllegalStateException if called after the Activity has been destroyed. 851 * <li> Accessibility services must require the new 852 * {@link android.Manifest.permission#BIND_ACCESSIBILITY_SERVICE} permission or 853 * they will not be available for use. 854 * <li> {@link android.accessibilityservice.AccessibilityServiceInfo#FLAG_INCLUDE_NOT_IMPORTANT_VIEWS 855 * AccessibilityServiceInfo.FLAG_INCLUDE_NOT_IMPORTANT_VIEWS} must be set 856 * for unimportant views to be included in queries. 857 * </ul> 858 */ 859 public static final int JELLY_BEAN = 16; 860 861 /** 862 * J MR1. 863 * 864 * <p>Released publicly as Android 4.2 in November 2012. 865 * <p>Applications targeting this or a later release will get these 866 * new changes in behavior:</p> 867 * <ul> 868 * <li>Content Providers: The default value of {@code android:exported} is now 869 * {@code false}. See 870 * <a href="{@docRoot}guide/topics/manifest/provider-element.html#exported"> 871 * the android:exported section</a> in the provider documentation for more details.</li> 872 * <li>{@link android.view.View#getLayoutDirection() View.getLayoutDirection()} 873 * can return different values than {@link android.view.View#LAYOUT_DIRECTION_LTR} 874 * based on the locale etc. 875 * <li> {@link android.webkit.WebView#addJavascriptInterface(Object, String) 876 * WebView.addJavascriptInterface} requires explicit annotations on methods 877 * for them to be accessible from Javascript. 878 * </ul> 879 */ 880 public static final int JELLY_BEAN_MR1 = 17; 881 882 /** 883 * J MR2. 884 * 885 * <p>Released publicly as Android 4.3 in July 2013. 886 */ 887 public static final int JELLY_BEAN_MR2 = 18; 888 889 /** 890 * K. 891 * 892 * <p>Released publicly as Android 4.4 in October 2013. 893 * <p>Applications targeting this or a later release will get these 894 * new changes in behavior. For more information about this release, see the 895 * <a href="/about/versions/kitkat/">Android KitKat overview</a>.</p> 896 * <ul> 897 * <li> The default result of 898 * {@link android.preference.PreferenceActivity#isValidFragment(String) 899 * PreferenceActivity.isValueFragment} becomes false instead of true.</li> 900 * <li> In {@link android.webkit.WebView}, apps targeting earlier versions will have 901 * JS URLs evaluated directly and any result of the evaluation will not replace 902 * the current page content. Apps targetting KITKAT or later that load a JS URL will 903 * have the result of that URL replace the content of the current page</li> 904 * <li> {@link android.app.AlarmManager#set AlarmManager.set} becomes interpreted as 905 * an inexact value, to give the system more flexibility in scheduling alarms.</li> 906 * <li> {@link android.content.Context#getSharedPreferences(String, int) 907 * Context.getSharedPreferences} no longer allows a null name.</li> 908 * <li> {@link android.widget.RelativeLayout} changes to compute wrapped content 909 * margins correctly.</li> 910 * <li> {@link android.app.ActionBar}'s window content overlay is allowed to be 911 * drawn.</li> 912 * <li>The {@link android.Manifest.permission#READ_EXTERNAL_STORAGE} 913 * permission is now always enforced.</li> 914 * <li>Access to package-specific external storage directories belonging 915 * to the calling app no longer requires the 916 * {@link android.Manifest.permission#READ_EXTERNAL_STORAGE} or 917 * {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} 918 * permissions.</li> 919 * </ul> 920 */ 921 public static final int KITKAT = 19; 922 923 /** 924 * K for watches. 925 * 926 * <p>Released publicly as Android 4.4W in June 2014. 927 * <p>Applications targeting this or a later release will get these 928 * new changes in behavior:</p> 929 * <ul> 930 * <li>{@link android.app.AlertDialog} might not have a default background if the theme does 931 * not specify one.</li> 932 * </ul> 933 */ 934 public static final int KITKAT_WATCH = 20; 935 936 /** 937 * Temporary until we completely switch to {@link #LOLLIPOP}. 938 * @hide 939 */ 940 public static final int L = 21; 941 942 /** 943 * L. 944 * 945 * <p>Released publicly as Android 5.0 in November 2014. 946 * <p>Applications targeting this or a later release will get these 947 * new changes in behavior. For more information about this release, see the 948 * <a href="/about/versions/lollipop/">Android Lollipop overview</a>.</p> 949 * <ul> 950 * <li> {@link android.content.Context#bindService Context.bindService} now 951 * requires an explicit Intent, and will throw an exception if given an implicit 952 * Intent.</li> 953 * <li> {@link android.app.Notification.Builder Notification.Builder} will 954 * not have the colors of their various notification elements adjusted to better 955 * match the new material design look.</li> 956 * <li> {@link android.os.Message} will validate that a message is not currently 957 * in use when it is recycled.</li> 958 * <li> Hardware accelerated drawing in windows will be enabled automatically 959 * in most places.</li> 960 * <li> {@link android.widget.Spinner} throws an exception if attaching an 961 * adapter with more than one item type.</li> 962 * <li> If the app is a launcher, the launcher will be available to the user 963 * even when they are using corporate profiles (which requires that the app 964 * use {@link android.content.pm.LauncherApps} to correctly populate its 965 * apps UI).</li> 966 * <li> Calling {@link android.app.Service#stopForeground Service.stopForeground} 967 * with removeNotification false will modify the still posted notification so that 968 * it is no longer forced to be ongoing.</li> 969 * <li> A {@link android.service.dreams.DreamService} must require the 970 * {@link android.Manifest.permission#BIND_DREAM_SERVICE} permission to be usable.</li> 971 * </ul> 972 */ 973 public static final int LOLLIPOP = 21; 974 975 /** 976 * L MR1. 977 * 978 * <p>Released publicly as Android 5.1 in March 2015. 979 * <p>For more information about this release, see the 980 * <a href="/about/versions/android-5.1">Android 5.1 APIs</a>. 981 */ 982 public static final int LOLLIPOP_MR1 = 22; 983 984 /** 985 * M. 986 * 987 * <p>Released publicly as Android 6.0 in October 2015. 988 * <p>Applications targeting this or a later release will get these 989 * new changes in behavior. For more information about this release, see the 990 * <a href="/about/versions/marshmallow/">Android 6.0 Marshmallow overview</a>.</p> 991 * <ul> 992 * <li> Runtime permissions. Dangerous permissions are no longer granted at 993 * install time, but must be requested by the application at runtime through 994 * {@link android.app.Activity#requestPermissions}.</li> 995 * <li> Bluetooth and Wi-Fi scanning now requires holding the location permission.</li> 996 * <li> {@link android.app.AlarmManager#setTimeZone AlarmManager.setTimeZone} will fail if 997 * the given timezone is non-Olson.</li> 998 * <li> Activity transitions will only return shared 999 * elements mapped in the returned view hierarchy back to the calling activity.</li> 1000 * <li> {@link android.view.View} allows a number of behaviors that may break 1001 * existing apps: Canvas throws an exception if restore() is called too many times, 1002 * widgets may return a hint size when returning UNSPECIFIED measure specs, and it 1003 * will respect the attributes {@link android.R.attr#foreground}, 1004 * {@link android.R.attr#foregroundGravity}, {@link android.R.attr#foregroundTint}, and 1005 * {@link android.R.attr#foregroundTintMode}.</li> 1006 * <li> {@link android.view.MotionEvent#getButtonState MotionEvent.getButtonState} 1007 * will no longer report {@link android.view.MotionEvent#BUTTON_PRIMARY} 1008 * and {@link android.view.MotionEvent#BUTTON_SECONDARY} as synonyms for 1009 * {@link android.view.MotionEvent#BUTTON_STYLUS_PRIMARY} and 1010 * {@link android.view.MotionEvent#BUTTON_STYLUS_SECONDARY}.</li> 1011 * <li> {@link android.widget.ScrollView} now respects the layout param margins 1012 * when measuring.</li> 1013 * </ul> 1014 */ 1015 public static final int M = 23; 1016 1017 /** 1018 * N. 1019 * 1020 * <p>Released publicly as Android 7.0 in August 2016. 1021 * <p>Applications targeting this or a later release will get these 1022 * new changes in behavior. For more information about this release, see 1023 * the <a href="/about/versions/nougat/">Android Nougat overview</a>.</p> 1024 * <ul> 1025 * <li> {@link android.app.DownloadManager.Request#setAllowedNetworkTypes 1026 * DownloadManager.Request.setAllowedNetworkTypes} 1027 * will disable "allow over metered" when specifying only 1028 * {@link android.app.DownloadManager.Request#NETWORK_WIFI}.</li> 1029 * <li> {@link android.app.DownloadManager} no longer allows access to raw 1030 * file paths.</li> 1031 * <li> {@link android.app.Notification.Builder#setShowWhen 1032 * Notification.Builder.setShowWhen} 1033 * must be called explicitly to have the time shown, and various other changes in 1034 * {@link android.app.Notification.Builder Notification.Builder} to how notifications 1035 * are shown.</li> 1036 * <li>{@link android.content.Context#MODE_WORLD_READABLE} and 1037 * {@link android.content.Context#MODE_WORLD_WRITEABLE} are no longer supported.</li> 1038 * <li>{@link android.os.FileUriExposedException} will be thrown to applications.</li> 1039 * <li>Applications will see global drag and drops as per 1040 * {@link android.view.View#DRAG_FLAG_GLOBAL}.</li> 1041 * <li>{@link android.webkit.WebView#evaluateJavascript WebView.evaluateJavascript} 1042 * will not persist state from an empty WebView.</li> 1043 * <li>{@link android.animation.AnimatorSet} will not ignore calls to end() before 1044 * start().</li> 1045 * <li>{@link android.app.AlarmManager#cancel(android.app.PendingIntent) 1046 * AlarmManager.cancel} will throw a NullPointerException if given a null operation.</li> 1047 * <li>{@link android.app.FragmentManager} will ensure fragments have been created 1048 * before being placed on the back stack.</li> 1049 * <li>{@link android.app.FragmentManager} restores fragments in 1050 * {@link android.app.Fragment#onCreate Fragment.onCreate} rather than after the 1051 * method returns.</li> 1052 * <li>{@link android.R.attr#resizeableActivity} defaults to true.</li> 1053 * <li>{@link android.graphics.drawable.AnimatedVectorDrawable} throws exceptions when 1054 * opening invalid VectorDrawable animations.</li> 1055 * <li>{@link android.view.ViewGroup.MarginLayoutParams} will no longer be dropped 1056 * when converting between some types of layout params (such as 1057 * {@link android.widget.LinearLayout.LayoutParams LinearLayout.LayoutParams} to 1058 * {@link android.widget.RelativeLayout.LayoutParams RelativeLayout.LayoutParams}).</li> 1059 * <li>Your application processes will not be killed when the device density changes.</li> 1060 * <li>Drag and drop. After a view receives the 1061 * {@link android.view.DragEvent#ACTION_DRAG_ENTERED} event, when the drag shadow moves into 1062 * a descendant view that can accept the data, the view receives the 1063 * {@link android.view.DragEvent#ACTION_DRAG_EXITED} event and won’t receive 1064 * {@link android.view.DragEvent#ACTION_DRAG_LOCATION} and 1065 * {@link android.view.DragEvent#ACTION_DROP} events while the drag shadow is within that 1066 * descendant view, even if the descendant view returns <code>false</code> from its handler 1067 * for these events.</li> 1068 * </ul> 1069 */ 1070 public static final int N = 24; 1071 1072 /** 1073 * N MR1. 1074 * 1075 * <p>Released publicly as Android 7.1 in October 2016. 1076 * <p>For more information about this release, see 1077 * <a href="/about/versions/nougat/android-7.1">Android 7.1 for 1078 * Developers</a>. 1079 */ 1080 public static final int N_MR1 = 25; 1081 1082 /** 1083 * O. 1084 * 1085 * <p>Released publicly as Android 8.0 in August 2017. 1086 * <p>Applications targeting this or a later release will get these 1087 * new changes in behavior. For more information about this release, see 1088 * the <a href="/about/versions/oreo/">Android Oreo overview</a>.</p> 1089 * <ul> 1090 * <li><a href="{@docRoot}about/versions/oreo/background.html">Background execution limits</a> 1091 * are applied to the application.</li> 1092 * <li>The behavior of AccountManager's 1093 * {@link android.accounts.AccountManager#getAccountsByType}, 1094 * {@link android.accounts.AccountManager#getAccountsByTypeAndFeatures}, and 1095 * {@link android.accounts.AccountManager#hasFeatures} has changed as documented there.</li> 1096 * <li>{@link android.app.ActivityManager.RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE_PRE_26} 1097 * is now returned as 1098 * {@link android.app.ActivityManager.RunningAppProcessInfo#IMPORTANCE_PERCEPTIBLE}.</li> 1099 * <li>The {@link android.app.NotificationManager} now requires the use of notification 1100 * channels.</li> 1101 * <li>Changes to the strict mode that are set in 1102 * {@link Application#onCreate Application.onCreate} will no longer be clobbered after 1103 * that function returns.</li> 1104 * <li>A shared library apk with native code will have that native code included in 1105 * the library path of its clients.</li> 1106 * <li>{@link android.content.Context#getSharedPreferences Context.getSharedPreferences} 1107 * in credential encrypted storage will throw an exception before the user is unlocked.</li> 1108 * <li>Attempting to retrieve a {@link Context#FINGERPRINT_SERVICE} on a device that 1109 * does not support that feature will now throw a runtime exception.</li> 1110 * <li>{@link android.app.Fragment} will stop any active view animations when 1111 * the fragment is stopped.</li> 1112 * <li>Some compatibility code in Resources that attempts to use the default Theme 1113 * the app may be using will be turned off, requiring the app to explicitly request 1114 * resources with the right theme.</li> 1115 * <li>{@link android.content.ContentResolver#notifyChange ContentResolver.notifyChange} and 1116 * {@link android.content.ContentResolver#registerContentObserver 1117 * ContentResolver.registerContentObserver} 1118 * will throw a SecurityException if the caller does not have permission to access 1119 * the provider (or the provider doesn't exit); otherwise the call will be silently 1120 * ignored.</li> 1121 * <li>{@link android.hardware.camera2.CameraDevice#createCaptureRequest 1122 * CameraDevice.createCaptureRequest} will enable 1123 * {@link android.hardware.camera2.CaptureRequest#CONTROL_ENABLE_ZSL} by default for 1124 * still image capture.</li> 1125 * <li>WallpaperManager's {@link android.app.WallpaperManager#getWallpaperFile}, 1126 * {@link android.app.WallpaperManager#getDrawable}, 1127 * {@link android.app.WallpaperManager#getFastDrawable}, 1128 * {@link android.app.WallpaperManager#peekDrawable}, and 1129 * {@link android.app.WallpaperManager#peekFastDrawable} will throw an exception 1130 * if you can not access the wallpaper.</li> 1131 * <li>The behavior of 1132 * {@link android.hardware.usb.UsbDeviceConnection#requestWait UsbDeviceConnection.requestWait} 1133 * is modified as per the documentation there.</li> 1134 * <li>{@link StrictMode.VmPolicy.Builder#detectAll StrictMode.VmPolicy.Builder.detectAll} 1135 * will also enable {@link StrictMode.VmPolicy.Builder#detectContentUriWithoutPermission} 1136 * and {@link StrictMode.VmPolicy.Builder#detectUntaggedSockets}.</li> 1137 * <li>{@link StrictMode.ThreadPolicy.Builder#detectAll StrictMode.ThreadPolicy.Builder.detectAll} 1138 * will also enable {@link StrictMode.ThreadPolicy.Builder#detectUnbufferedIo}.</li> 1139 * <li>{@link android.provider.DocumentsContract}'s various methods will throw failure 1140 * exceptions back to the caller instead of returning null. 1141 * <li>{@link View#hasFocusable() View.hasFocusable} now includes auto-focusable views.</li> 1142 * <li>{@link android.view.SurfaceView} will no longer always change the underlying 1143 * Surface object when something about it changes; apps need to look at the current 1144 * state of the object to determine which things they are interested in have changed.</li> 1145 * <li>{@link android.view.WindowManager.LayoutParams#TYPE_APPLICATION_OVERLAY} must be 1146 * used for overlay windows, other system overlay window types are not allowed.</li> 1147 * <li>{@link android.view.ViewTreeObserver#addOnDrawListener 1148 * ViewTreeObserver.addOnDrawListener} will throw an exception if called from within 1149 * onDraw.</li> 1150 * <li>{@link android.graphics.Canvas#setBitmap Canvas.setBitmap} will no longer preserve 1151 * the current matrix and clip stack of the canvas.</li> 1152 * <li>{@link android.widget.ListPopupWindow#setHeight ListPopupWindow.setHeight} 1153 * will throw an exception if a negative height is supplied.</li> 1154 * <li>{@link android.widget.TextView} will use internationalized input for numbers, 1155 * dates, and times.</li> 1156 * <li>{@link android.widget.Toast} must be used for showing toast windows; the toast 1157 * window type can not be directly used.</li> 1158 * <li>{@link android.net.wifi.WifiManager#getConnectionInfo WifiManager.getConnectionInfo} 1159 * requires that the caller hold the location permission to return BSSID/SSID</li> 1160 * <li>{@link android.net.wifi.p2p.WifiP2pManager#requestPeers WifiP2pManager.requestPeers} 1161 * requires the caller hold the location permission.</li> 1162 * <li>{@link android.R.attr#maxAspectRatio} defaults to 0, meaning there is no restriction 1163 * on the app's maximum aspect ratio (so it can be stretched to fill larger screens).</li> 1164 * <li>{@link android.R.attr#focusable} defaults to a new state ({@code auto}) where it will 1165 * inherit the value of {@link android.R.attr#clickable} unless explicitly overridden.</li> 1166 * <li>A default theme-appropriate focus-state highlight will be supplied to all Views 1167 * which don't provide a focus-state drawable themselves. This can be disabled by setting 1168 * {@link android.R.attr#defaultFocusHighlightEnabled} to false.</li> 1169 * </ul> 1170 */ 1171 public static final int O = 26; 1172 1173 /** 1174 * O MR1. 1175 * 1176 * <p>Released publicly as Android 8.1 in December 2017. 1177 * <p>Applications targeting this or a later release will get these 1178 * new changes in behavior. For more information about this release, see 1179 * <a href="/about/versions/oreo/android-8.1">Android 8.1 features and 1180 * APIs</a>.</p> 1181 * <ul> 1182 * <li>Apps exporting and linking to apk shared libraries must explicitly 1183 * enumerate all signing certificates in a consistent order.</li> 1184 * <li>{@link android.R.attr#screenOrientation} can not be used to request a fixed 1185 * orientation if the associated activity is not fullscreen and opaque.</li> 1186 * </ul> 1187 * 1188 */ 1189 public static final int O_MR1 = 27; 1190 1191 /** 1192 * P. 1193 * 1194 * <p>Released publicly as Android 9 in August 2018. 1195 * <p>Applications targeting this or a later release will get these 1196 * new changes in behavior. For more information about this release, see the 1197 * <a href="/about/versions/pie/">Android 9 Pie overview</a>.</p> 1198 * <ul> 1199 * <li>{@link android.app.Service#startForeground Service.startForeground} requires 1200 * that apps hold the permission 1201 * {@link android.Manifest.permission#FOREGROUND_SERVICE}.</li> 1202 * <li>{@link android.widget.LinearLayout} will always remeasure weighted children, 1203 * even if there is no excess space.</li> 1204 * </ul> 1205 * 1206 */ 1207 public static final int P = 28; 1208 1209 /** 1210 * Q. 1211 * 1212 * <p>Released publicly as Android 10 in September 2019. 1213 * <p>Applications targeting this or a later release will get these new changes in behavior. 1214 * For more information about this release, see the 1215 * <a href="/about/versions/10">Android 10 overview</a>.</p> 1216 * <ul> 1217 * <li><a href="/about/versions/10/behavior-changes-all">Behavior changes: all apps</a></li> 1218 * <li><a href="/about/versions/10/behavior-changes-10">Behavior changes: apps targeting API 1219 * 29+</a></li> 1220 * </ul> 1221 * 1222 */ 1223 public static final int Q = 29; 1224 1225 /** 1226 * R. 1227 * 1228 * <p>Released publicly as Android 11 in September 2020. 1229 * <p>Applications targeting this or a later release will get these new changes in behavior. 1230 * For more information about this release, see the 1231 * <a href="/about/versions/11">Android 11 overview</a>.</p> 1232 * <ul> 1233 * <li><a href="/about/versions/11/behavior-changes-all">Behavior changes: all apps</a></li> 1234 * <li><a href="/about/versions/11/behavior-changes-11">Behavior changes: Apps targeting 1235 * Android 11</a></li> 1236 * <li><a href="/about/versions/11/non-sdk-11">Updates to non-SDK interface restrictions 1237 * in Android 11</a></li> 1238 * </ul> 1239 * 1240 */ 1241 public static final int R = 30; 1242 1243 /** 1244 * S. 1245 */ 1246 public static final int S = 31; 1247 1248 /** 1249 * S V2. 1250 * 1251 * Once more unto the breach, dear friends, once more. 1252 */ 1253 public static final int S_V2 = 32; 1254 1255 /** 1256 * Tiramisu. 1257 */ 1258 public static final int TIRAMISU = 33; 1259 1260 /** 1261 * Upside Down Cake. 1262 */ 1263 public static final int UPSIDE_DOWN_CAKE = 34; 1264 1265 /** 1266 * Vanilla Ice Cream. 1267 */ 1268 public static final int VANILLA_ICE_CREAM = 35; 1269 1270 /** 1271 * Baklava. 1272 */ 1273 @FlaggedApi(Flags.FLAG_MAJOR_MINOR_VERSIONING_SCHEME) 1274 public static final int BAKLAVA = 36; 1275 } 1276 1277 /** @hide */ 1278 @IntDef(value = { 1279 VERSION_CODES_FULL.BASE, 1280 VERSION_CODES_FULL.BASE_1_1, 1281 VERSION_CODES_FULL.CUPCAKE, 1282 VERSION_CODES_FULL.DONUT, 1283 VERSION_CODES_FULL.ECLAIR, 1284 VERSION_CODES_FULL.ECLAIR_0_1, 1285 VERSION_CODES_FULL.ECLAIR_MR1, 1286 VERSION_CODES_FULL.FROYO, 1287 VERSION_CODES_FULL.GINGERBREAD, 1288 VERSION_CODES_FULL.GINGERBREAD_MR1, 1289 VERSION_CODES_FULL.HONEYCOMB, 1290 VERSION_CODES_FULL.HONEYCOMB_MR1, 1291 VERSION_CODES_FULL.HONEYCOMB_MR2, 1292 VERSION_CODES_FULL.ICE_CREAM_SANDWICH, 1293 VERSION_CODES_FULL.ICE_CREAM_SANDWICH_MR1, 1294 VERSION_CODES_FULL.JELLY_BEAN, 1295 VERSION_CODES_FULL.JELLY_BEAN_MR1, 1296 VERSION_CODES_FULL.JELLY_BEAN_MR2, 1297 VERSION_CODES_FULL.KITKAT, 1298 VERSION_CODES_FULL.KITKAT_WATCH, 1299 VERSION_CODES_FULL.LOLLIPOP, 1300 VERSION_CODES_FULL.LOLLIPOP_MR1, 1301 VERSION_CODES_FULL.M, 1302 VERSION_CODES_FULL.N, 1303 VERSION_CODES_FULL.N_MR1, 1304 VERSION_CODES_FULL.O, 1305 VERSION_CODES_FULL.O_MR1, 1306 VERSION_CODES_FULL.P, 1307 VERSION_CODES_FULL.Q, 1308 VERSION_CODES_FULL.R, 1309 VERSION_CODES_FULL.S, 1310 VERSION_CODES_FULL.S_V2, 1311 VERSION_CODES_FULL.TIRAMISU, 1312 VERSION_CODES_FULL.UPSIDE_DOWN_CAKE, 1313 VERSION_CODES_FULL.VANILLA_ICE_CREAM, 1314 VERSION_CODES_FULL.BAKLAVA, 1315 }) 1316 @Retention(RetentionPolicy.SOURCE) 1317 public @interface SdkIntFull {} 1318 1319 /** 1320 * Enumeration of the currently known SDK major and minor version codes. 1321 * The numbers increase for every release, and are guaranteed to be ordered 1322 * by the release date of each release. The actual values should be 1323 * considered an implementation detail, and the current encoding scheme may 1324 * change in the future. 1325 * 1326 * @see android.os.Build.VERSION#SDK_INT_FULL 1327 */ 1328 @FlaggedApi(Flags.FLAG_MAJOR_MINOR_VERSIONING_SCHEME) 1329 @SuppressLint("AcronymName") 1330 public static class VERSION_CODES_FULL { VERSION_CODES_FULL()1331 private VERSION_CODES_FULL() {} 1332 1333 // Use the last 5 digits for the minor version. This allows the 1334 // minor version to be set to CUR_DEVELOPMENT. 1335 private static final int SDK_INT_MULTIPLIER = 100000; 1336 1337 /** 1338 * Android 1.0. 1339 */ 1340 public static final int BASE = VERSION_CODES.BASE * SDK_INT_MULTIPLIER; 1341 1342 /** 1343 * Android 2.0. 1344 */ 1345 public static final int BASE_1_1 = VERSION_CODES.BASE_1_1 * SDK_INT_MULTIPLIER; 1346 1347 /** 1348 * Android 3.0. 1349 */ 1350 public static final int CUPCAKE = VERSION_CODES.CUPCAKE * SDK_INT_MULTIPLIER; 1351 1352 /** 1353 * Android 4.0. 1354 */ 1355 public static final int DONUT = VERSION_CODES.DONUT * SDK_INT_MULTIPLIER; 1356 1357 /** 1358 * Android 5.0. 1359 */ 1360 public static final int ECLAIR = VERSION_CODES.ECLAIR * SDK_INT_MULTIPLIER; 1361 1362 /** 1363 * Android 6.0. 1364 */ 1365 public static final int ECLAIR_0_1 = VERSION_CODES.ECLAIR_0_1 * SDK_INT_MULTIPLIER; 1366 1367 /** 1368 * Android 7.0. 1369 */ 1370 public static final int ECLAIR_MR1 = VERSION_CODES.ECLAIR_MR1 * SDK_INT_MULTIPLIER; 1371 1372 /** 1373 * Android 8.0. 1374 */ 1375 public static final int FROYO = VERSION_CODES.FROYO * SDK_INT_MULTIPLIER; 1376 1377 /** 1378 * Android 9.0. 1379 */ 1380 public static final int GINGERBREAD = VERSION_CODES.GINGERBREAD * SDK_INT_MULTIPLIER; 1381 1382 /** 1383 * Android 10.0. 1384 */ 1385 public static final int GINGERBREAD_MR1 = 1386 VERSION_CODES.GINGERBREAD_MR1 * SDK_INT_MULTIPLIER; 1387 1388 /** 1389 * Android 11.0. 1390 */ 1391 public static final int HONEYCOMB = VERSION_CODES.HONEYCOMB * SDK_INT_MULTIPLIER; 1392 1393 /** 1394 * Android 12.0. 1395 */ 1396 public static final int HONEYCOMB_MR1 = VERSION_CODES.HONEYCOMB_MR1 * SDK_INT_MULTIPLIER; 1397 1398 /** 1399 * Android 13.0. 1400 */ 1401 public static final int HONEYCOMB_MR2 = VERSION_CODES.HONEYCOMB_MR2 * SDK_INT_MULTIPLIER; 1402 1403 /** 1404 * Android 14.0. 1405 */ 1406 public static final int ICE_CREAM_SANDWICH = 1407 VERSION_CODES.ICE_CREAM_SANDWICH * SDK_INT_MULTIPLIER; 1408 1409 /** 1410 * Android 15.0. 1411 */ 1412 public static final int ICE_CREAM_SANDWICH_MR1 = 1413 VERSION_CODES.ICE_CREAM_SANDWICH_MR1 * SDK_INT_MULTIPLIER; 1414 1415 /** 1416 * Android 16.0. 1417 */ 1418 public static final int JELLY_BEAN = VERSION_CODES.JELLY_BEAN * SDK_INT_MULTIPLIER; 1419 1420 /** 1421 * Android 17.0. 1422 */ 1423 public static final int JELLY_BEAN_MR1 = VERSION_CODES.JELLY_BEAN_MR1 * SDK_INT_MULTIPLIER; 1424 1425 /** 1426 * Android 18.0. 1427 */ 1428 public static final int JELLY_BEAN_MR2 = VERSION_CODES.JELLY_BEAN_MR2 * SDK_INT_MULTIPLIER; 1429 1430 /** 1431 * Android 19.0. 1432 */ 1433 public static final int KITKAT = VERSION_CODES.KITKAT * SDK_INT_MULTIPLIER; 1434 1435 /** 1436 * Android 20.0. 1437 */ 1438 public static final int KITKAT_WATCH = VERSION_CODES.KITKAT_WATCH * SDK_INT_MULTIPLIER; 1439 1440 /** 1441 * Android 21.0. 1442 */ 1443 public static final int LOLLIPOP = VERSION_CODES.LOLLIPOP * SDK_INT_MULTIPLIER; 1444 1445 /** 1446 * Android 22.0. 1447 */ 1448 public static final int LOLLIPOP_MR1 = VERSION_CODES.LOLLIPOP_MR1 * SDK_INT_MULTIPLIER; 1449 1450 /** 1451 * Android 23.0. 1452 */ 1453 public static final int M = VERSION_CODES.M * SDK_INT_MULTIPLIER; 1454 1455 /** 1456 * Android 24.0. 1457 */ 1458 public static final int N = VERSION_CODES.N * SDK_INT_MULTIPLIER; 1459 1460 /** 1461 * Android 25.0. 1462 */ 1463 public static final int N_MR1 = VERSION_CODES.N_MR1 * SDK_INT_MULTIPLIER; 1464 1465 /** 1466 * Android 26.0. 1467 */ 1468 public static final int O = VERSION_CODES.O * SDK_INT_MULTIPLIER; 1469 1470 /** 1471 * Android 27.0. 1472 */ 1473 public static final int O_MR1 = VERSION_CODES.O_MR1 * SDK_INT_MULTIPLIER; 1474 1475 /** 1476 * Android 28.0. 1477 */ 1478 public static final int P = VERSION_CODES.P * SDK_INT_MULTIPLIER; 1479 1480 /** 1481 * Android 29.0. 1482 */ 1483 public static final int Q = VERSION_CODES.Q * SDK_INT_MULTIPLIER; 1484 1485 /** 1486 * Android 30.0. 1487 */ 1488 public static final int R = VERSION_CODES.R * SDK_INT_MULTIPLIER; 1489 1490 /** 1491 * Android 31.0. 1492 */ 1493 public static final int S = VERSION_CODES.S * SDK_INT_MULTIPLIER; 1494 1495 /** 1496 * Android 32.0. 1497 */ 1498 public static final int S_V2 = VERSION_CODES.S_V2 * SDK_INT_MULTIPLIER; 1499 1500 /** 1501 * Android 33.0. 1502 */ 1503 public static final int TIRAMISU = VERSION_CODES.TIRAMISU * SDK_INT_MULTIPLIER; 1504 1505 /** 1506 * Android 34.0. 1507 */ 1508 public static final int UPSIDE_DOWN_CAKE = 1509 VERSION_CODES.UPSIDE_DOWN_CAKE * SDK_INT_MULTIPLIER; 1510 1511 /** 1512 * Android 35.0. 1513 */ 1514 public static final int VANILLA_ICE_CREAM = 1515 VERSION_CODES.VANILLA_ICE_CREAM * SDK_INT_MULTIPLIER; 1516 1517 /** 1518 * Android 36.0. 1519 */ 1520 public static final int BAKLAVA = VERSION_CODES.BAKLAVA * SDK_INT_MULTIPLIER; 1521 } 1522 1523 /** 1524 * Obtain the major version encoded in a VERSION_CODES_FULL value. 1525 * This value is guaranteed to be non-negative. 1526 * 1527 * @return The major version encoded in a VERSION_CODES_FULL value 1528 */ 1529 @FlaggedApi(Flags.FLAG_MAJOR_MINOR_VERSIONING_SCHEME) getMajorSdkVersion(@dkIntFull int sdkIntFull)1530 public static int getMajorSdkVersion(@SdkIntFull int sdkIntFull) { 1531 return sdkIntFull / VERSION_CODES_FULL.SDK_INT_MULTIPLIER; 1532 } 1533 1534 /** 1535 * Obtain the minor version encoded in a VERSION_CODES_FULL value. 1536 * This value is guaranteed to be non-negative. 1537 * 1538 * @return The minor version encoded in a VERSION_CODES_FULL value 1539 */ 1540 @FlaggedApi(Flags.FLAG_MAJOR_MINOR_VERSIONING_SCHEME) getMinorSdkVersion(@dkIntFull int sdkIntFull)1541 public static int getMinorSdkVersion(@SdkIntFull int sdkIntFull) { 1542 return sdkIntFull % VERSION_CODES_FULL.SDK_INT_MULTIPLIER; 1543 } 1544 1545 /** 1546 * Convert a major.minor version String like "36.1" to an int that 1547 * represents both major and minor version. 1548 * 1549 * @param version the String to parse 1550 * @return an int encoding the major and minor version 1551 * @throws IllegalArgumentException if the string could not be converted into an int 1552 * 1553 * @hide 1554 */ 1555 @SuppressWarnings("FlaggedApi") // SDK_INT_MULTIPLIER is defined in this file 1556 @SuppressLint("InlinedApi") parseFullVersion(@onNull String version)1557 public static @SdkIntFull int parseFullVersion(@NonNull String version) { 1558 int index = version.indexOf('.'); 1559 int major; 1560 int minor = 0; 1561 try { 1562 if (index == -1) { 1563 major = Integer.parseInt(version); 1564 } else { 1565 major = Integer.parseInt(version.substring(0, index)); 1566 minor = Integer.parseInt(version.substring(index + 1)); 1567 } 1568 if (major < 0) { 1569 throw new NumberFormatException("negative major version"); 1570 } 1571 if (major >= 21474) { 1572 throw new NumberFormatException("major version too large, must be less than 21474"); 1573 } 1574 if (minor < 0) { 1575 throw new NumberFormatException("negative minor version"); 1576 } 1577 if (minor >= VERSION_CODES_FULL.SDK_INT_MULTIPLIER) { 1578 throw new NumberFormatException("minor version too large, must be less than " 1579 + VERSION_CODES_FULL.SDK_INT_MULTIPLIER); 1580 } 1581 } catch (NumberFormatException e) { 1582 throw new IllegalArgumentException("failed to parse '" + version 1583 + "' as a major.minor version code", e); 1584 } 1585 return major * VERSION_CODES_FULL.SDK_INT_MULTIPLIER + minor; 1586 } 1587 1588 /** 1589 * Convert an int representing a major.minor version like SDK_INT_FULL to a 1590 * human readable string. The returned string is only intended for debug 1591 * and error messages. 1592 * 1593 * @param version the int to convert to a string 1594 * @return a String representing the same major.minor version as the int passed in 1595 * @throws IllegalArgumentException if {@code version} is negative 1596 * 1597 * @hide 1598 */ fullVersionToString(@dkIntFull int version)1599 public static String fullVersionToString(@SdkIntFull int version) { 1600 if (version < 0) { 1601 throw new IllegalArgumentException("failed to convert '" + version 1602 + "' to string: not a valid major.minor version code"); 1603 } 1604 return String.format("%d.%d", getMajorSdkVersion(version), getMinorSdkVersion(version)); 1605 } 1606 1607 /** 1608 * The vendor API for 2024 Q2 1609 * 1610 * <p>For Android 14-QPR3 and later, the vendor API level is completely decoupled from the SDK 1611 * API level and the format has switched to YYYYMM (year and month) 1612 * 1613 * @see <a href="https://preview.source.android.com/docs/core/architecture/api-flags">Vendor API 1614 * level</a> 1615 * @hide 1616 */ 1617 public static final int VENDOR_API_2024_Q2 = 202404; 1618 1619 /** The type of build, like "user" or "eng". */ 1620 public static final String TYPE = getString("ro.build.type"); 1621 1622 /** Comma-separated tags describing the build, like "unsigned,debug". */ 1623 public static final String TAGS = getString("ro.build.tags"); 1624 1625 /** A string that uniquely identifies this build. Do not attempt to parse this value. */ 1626 public static final String FINGERPRINT = deriveFingerprint(); 1627 1628 /** The status of the known issue on this device is not known. */ 1629 @FlaggedApi(android.os.Flags.FLAG_API_FOR_BACKPORTED_FIXES) 1630 public static final int BACKPORTED_FIX_STATUS_UNKNOWN = 0; 1631 /** The known issue is fixed on this device. */ 1632 @FlaggedApi(android.os.Flags.FLAG_API_FOR_BACKPORTED_FIXES) 1633 public static final int BACKPORTED_FIX_STATUS_FIXED = 1; 1634 /** 1635 * The known issue is not applicable to this device. 1636 * 1637 * <p>For example if the issue only affects a specific brand, devices 1638 * from other brands would report not applicable. 1639 */ 1640 @FlaggedApi(android.os.Flags.FLAG_API_FOR_BACKPORTED_FIXES) 1641 public static final int BACKPORTED_FIX_STATUS_NOT_APPLICABLE = 2; 1642 /** The known issue is not fixed on this device. */ 1643 @FlaggedApi(android.os.Flags.FLAG_API_FOR_BACKPORTED_FIXES) 1644 public static final int BACKPORTED_FIX_STATUS_NOT_FIXED = 3; 1645 1646 /** 1647 * The status of the backported fix for a known issue on this device. 1648 * 1649 * @hide 1650 */ 1651 @IntDef( 1652 prefix = {"BACKPORTED_FIX_STATUS_"}, 1653 value = { 1654 BACKPORTED_FIX_STATUS_UNKNOWN, 1655 BACKPORTED_FIX_STATUS_FIXED, 1656 BACKPORTED_FIX_STATUS_NOT_APPLICABLE, 1657 BACKPORTED_FIX_STATUS_NOT_FIXED, 1658 }) 1659 @Retention(RetentionPolicy.SOURCE) 1660 public @interface BackportedFixStatus { 1661 } 1662 1663 /** 1664 * The status of the backported fix for a known issue on this device. 1665 * 1666 * @param id The id of the known issue to check. 1667 * @return {@link #BACKPORTED_FIX_STATUS_FIXED} if the known issue is 1668 * fixed on this device, 1669 * {@link #BACKPORTED_FIX_STATUS_NOT_FIXED} if the known issue is not 1670 * fixed on this device, 1671 * {@link #BACKPORTED_FIX_STATUS_NOT_APPLICABLE} if the known issue is 1672 * is not applicable on this device, 1673 * otherwise {@link #BACKPORTED_FIX_STATUS_UNKNOWN}. 1674 */ 1675 @FlaggedApi(android.os.Flags.FLAG_API_FOR_BACKPORTED_FIXES) getBackportedFixStatus(long id)1676 public static @BackportedFixStatus int getBackportedFixStatus(long id) { 1677 @BackportedFixStatus int status = BACKPORTED_FIX_STATUS_UNKNOWN; 1678 int uid = Binder.getCallingUid(); 1679 if (id > 0 && id <= 1023) { 1680 status = isBitSet(BackportedFixesProperties.alias_bitset(), (int) id) 1681 ? BACKPORTED_FIX_STATUS_FIXED : BACKPORTED_FIX_STATUS_UNKNOWN; 1682 } 1683 FrameworkStatsLog.write(FrameworkStatsLog.BACKPORTED_FIX_STATUS_REPORTED, uid, id, status); 1684 return status; 1685 } 1686 isBitSet(List<Long> bitsetLongArray, int bitIndex)1687 private static boolean isBitSet(List<Long> bitsetLongArray, int bitIndex) { 1688 // Because java.util.BitSet is not threadsafe do the calculations here instead. 1689 if (bitIndex < 0) { 1690 return false; 1691 } 1692 int arrayIndex = bitIndex >> 6; 1693 if (bitsetLongArray.size() <= arrayIndex) { 1694 return false; 1695 } 1696 return (bitsetLongArray.get(arrayIndex) & (1L << bitIndex)) != 0; 1697 } 1698 1699 /** 1700 * Some devices split the fingerprint components between multiple 1701 * partitions, so we might derive the fingerprint at runtime. 1702 */ deriveFingerprint()1703 private static String deriveFingerprint() { 1704 String finger = SystemProperties.get("ro.build.fingerprint"); 1705 if (TextUtils.isEmpty(finger)) { 1706 finger = getString("ro.product.brand") + '/' + 1707 getString("ro.product.name") + '/' + 1708 getString("ro.product.device") + ':' + 1709 getString("ro.build.version.release") + '/' + 1710 getString("ro.build.id") + '/' + 1711 getString("ro.build.version.incremental") + ':' + 1712 getString("ro.build.type") + '/' + 1713 getString("ro.build.tags"); 1714 } 1715 return finger; 1716 } 1717 1718 /** 1719 * Ensure that raw fingerprint system property is defined. If it was derived 1720 * dynamically by {@link #deriveFingerprint()} this is where we push the 1721 * derived value into the property service. 1722 * 1723 * @hide 1724 */ ensureFingerprintProperty()1725 public static void ensureFingerprintProperty() { 1726 if (TextUtils.isEmpty(SystemProperties.get("ro.build.fingerprint"))) { 1727 try { 1728 SystemProperties.set("ro.build.fingerprint", FINGERPRINT); 1729 } catch (IllegalArgumentException e) { 1730 Slog.e(TAG, "Failed to set fingerprint property", e); 1731 } 1732 } 1733 } 1734 1735 /** 1736 * A multiplier for various timeouts on the system. 1737 * 1738 * The intent is that products targeting software emulators that are orders of magnitude slower 1739 * than real hardware may set this to a large number. On real devices and hardware-accelerated 1740 * virtualized devices this should not be set. 1741 * 1742 * @hide 1743 */ 1744 public static final int HW_TIMEOUT_MULTIPLIER = 1745 SystemProperties.getInt("ro.hw_timeout_multiplier", 1); 1746 1747 /** 1748 * True if Treble is enabled and required for this device. 1749 * 1750 * @hide 1751 */ 1752 public static final boolean IS_TREBLE_ENABLED = 1753 SystemProperties.getBoolean("ro.treble.enabled", false); 1754 1755 /** 1756 * Verifies the current flash of the device is consistent with what 1757 * was expected at build time. 1758 * 1759 * Treble devices will verify the Vendor Interface (VINTF). A device 1760 * launched without Treble: 1761 * 1762 * 1) Checks that device fingerprint is defined and that it matches across 1763 * various partitions. 1764 * 2) Verifies radio and bootloader partitions are those expected in the build. 1765 * 1766 * @hide 1767 */ isBuildConsistent()1768 public static boolean isBuildConsistent() { 1769 // Don't care on eng builds. Incremental build may trigger false negative. 1770 if (IS_ENG) return true; 1771 1772 if (IS_TREBLE_ENABLED) { 1773 int result = VintfObject.verifyBuildAtBoot(); 1774 1775 if (result != 0) { 1776 Slog.e(TAG, "Vendor interface is incompatible, error=" 1777 + String.valueOf(result)); 1778 } 1779 1780 return result == 0; 1781 } 1782 1783 final String system = SystemProperties.get("ro.system.build.fingerprint"); 1784 final String vendor = SystemProperties.get("ro.vendor.build.fingerprint"); 1785 final String bootimage = SystemProperties.get("ro.bootimage.build.fingerprint"); 1786 final String requiredBootloader = SystemProperties.get("ro.build.expect.bootloader"); 1787 final String currentBootloader = SystemProperties.get("ro.bootloader"); 1788 final String requiredRadio = SystemProperties.get("ro.build.expect.baseband"); 1789 final String currentRadio = joinListOrElse( 1790 TelephonyProperties.baseband_version(), ""); 1791 1792 if (TextUtils.isEmpty(system)) { 1793 Slog.e(TAG, "Required ro.system.build.fingerprint is empty!"); 1794 return false; 1795 } 1796 1797 if (!TextUtils.isEmpty(vendor)) { 1798 if (!Objects.equals(system, vendor)) { 1799 Slog.e(TAG, "Mismatched fingerprints; system reported " + system 1800 + " but vendor reported " + vendor); 1801 return false; 1802 } 1803 } 1804 1805 /* TODO: Figure out issue with checks failing 1806 if (!TextUtils.isEmpty(bootimage)) { 1807 if (!Objects.equals(system, bootimage)) { 1808 Slog.e(TAG, "Mismatched fingerprints; system reported " + system 1809 + " but bootimage reported " + bootimage); 1810 return false; 1811 } 1812 } 1813 1814 if (!TextUtils.isEmpty(requiredBootloader)) { 1815 if (!Objects.equals(currentBootloader, requiredBootloader)) { 1816 Slog.e(TAG, "Mismatched bootloader version: build requires " + requiredBootloader 1817 + " but runtime reports " + currentBootloader); 1818 return false; 1819 } 1820 } 1821 1822 if (!TextUtils.isEmpty(requiredRadio)) { 1823 if (!Objects.equals(currentRadio, requiredRadio)) { 1824 Slog.e(TAG, "Mismatched radio version: build requires " + requiredRadio 1825 + " but runtime reports " + currentRadio); 1826 return false; 1827 } 1828 } 1829 */ 1830 1831 return true; 1832 } 1833 1834 /** Build information for a particular device partition. */ 1835 public static class Partition { 1836 /** The name identifying the system partition. */ 1837 public static final String PARTITION_NAME_SYSTEM = "system"; 1838 /** @hide */ 1839 public static final String PARTITION_NAME_BOOTIMAGE = "bootimage"; 1840 /** @hide */ 1841 public static final String PARTITION_NAME_ODM = "odm"; 1842 /** @hide */ 1843 public static final String PARTITION_NAME_OEM = "oem"; 1844 /** @hide */ 1845 public static final String PARTITION_NAME_PRODUCT = "product"; 1846 /** @hide */ 1847 public static final String PARTITION_NAME_SYSTEM_EXT = "system_ext"; 1848 /** @hide */ 1849 public static final String PARTITION_NAME_VENDOR = "vendor"; 1850 1851 private final String mName; 1852 private final String mFingerprint; 1853 private final long mTimeMs; 1854 Partition(String name, String fingerprint, long timeMs)1855 private Partition(String name, String fingerprint, long timeMs) { 1856 mName = name; 1857 mFingerprint = fingerprint; 1858 mTimeMs = timeMs; 1859 } 1860 1861 /** The name of this partition, e.g. "system", or "vendor" */ 1862 @NonNull getName()1863 public String getName() { 1864 return mName; 1865 } 1866 1867 /** The build fingerprint of this partition, see {@link Build#FINGERPRINT}. */ 1868 @NonNull getFingerprint()1869 public String getFingerprint() { 1870 return mFingerprint; 1871 } 1872 1873 /** The time (ms since epoch), at which this partition was built, see {@link Build#TIME}. */ getBuildTimeMillis()1874 public long getBuildTimeMillis() { 1875 return mTimeMs; 1876 } 1877 1878 @Override equals(@ullable Object o)1879 public boolean equals(@Nullable Object o) { 1880 if (!(o instanceof Partition)) { 1881 return false; 1882 } 1883 Partition op = (Partition) o; 1884 return mName.equals(op.mName) 1885 && mFingerprint.equals(op.mFingerprint) 1886 && mTimeMs == op.mTimeMs; 1887 } 1888 1889 @Override hashCode()1890 public int hashCode() { 1891 return Objects.hash(mName, mFingerprint, mTimeMs); 1892 } 1893 } 1894 1895 /** 1896 * Get build information about partitions that have a separate fingerprint defined. 1897 * 1898 * The list includes partitions that are suitable candidates for over-the-air updates. This is 1899 * not an exhaustive list of partitions on the device. 1900 */ 1901 @NonNull getFingerprintedPartitions()1902 public static List<Partition> getFingerprintedPartitions() { 1903 ArrayList<Partition> partitions = new ArrayList(); 1904 1905 String[] names = new String[] { 1906 Partition.PARTITION_NAME_BOOTIMAGE, 1907 Partition.PARTITION_NAME_ODM, 1908 Partition.PARTITION_NAME_PRODUCT, 1909 Partition.PARTITION_NAME_SYSTEM_EXT, 1910 Partition.PARTITION_NAME_SYSTEM, 1911 Partition.PARTITION_NAME_VENDOR 1912 }; 1913 for (String name : names) { 1914 String fingerprint = SystemProperties.get("ro." + name + ".build.fingerprint"); 1915 if (TextUtils.isEmpty(fingerprint)) { 1916 continue; 1917 } 1918 long time = getLong("ro." + name + ".build.date.utc") * 1000; 1919 partitions.add(new Partition(name, fingerprint, time)); 1920 } 1921 1922 return partitions; 1923 } 1924 1925 // The following properties only make sense for internal engineering builds. 1926 1927 /** The time at which the build was produced, given in milliseconds since the UNIX epoch. */ 1928 public static final long TIME = getLong("ro.build.date.utc") * 1000; 1929 public static final String USER = getString("ro.build.user"); 1930 public static final String HOST = getString("ro.build.host"); 1931 1932 /** 1933 * Returns true if the device is running a debuggable build such as "userdebug" or "eng". 1934 * 1935 * Debuggable builds allow users to gain root access via local shell, attach debuggers to any 1936 * application regardless of whether they have the "debuggable" attribute set, or downgrade 1937 * selinux into "permissive" mode in particular. 1938 * @hide 1939 */ 1940 @UnsupportedAppUsage 1941 public static final boolean IS_DEBUGGABLE = 1942 SystemProperties.getInt("ro.debuggable", 0) == 1; 1943 1944 /** 1945 * Returns true if the device is running a debuggable build such as "userdebug" or "eng". 1946 * 1947 * Debuggable builds allow users to gain root access via local shell, attach debuggers to any 1948 * application regardless of whether they have the "debuggable" attribute set, or downgrade 1949 * selinux into "permissive" mode in particular. 1950 * @hide 1951 */ 1952 @TestApi 1953 @SystemApi(client = SystemApi.Client.MODULE_LIBRARIES) isDebuggable()1954 public static boolean isDebuggable() { 1955 return IS_DEBUGGABLE; 1956 } 1957 1958 /** {@hide} */ 1959 public static final boolean IS_ENG = "eng".equals(TYPE); 1960 /** {@hide} */ 1961 public static final boolean IS_USERDEBUG = "userdebug".equals(TYPE); 1962 /** {@hide} */ 1963 public static final boolean IS_USER = "user".equals(TYPE); 1964 1965 /** 1966 * Whether this build is running on ARC, the Android Runtime for Chrome 1967 * (https://chromium.googlesource.com/chromiumos/docs/+/master/containers_and_vms.md). 1968 * Prior to R this was implemented as a container but from R this will be 1969 * a VM. The name of the property remains ro.boot.conntainer as it is 1970 * referenced in other projects. 1971 * 1972 * We should try to avoid checking this flag if possible to minimize 1973 * unnecessarily diverging from non-container Android behavior. 1974 * Checking this flag is acceptable when low-level resources being 1975 * different, e.g. the availability of certain capabilities, access to 1976 * system resources being restricted, and the fact that the host OS might 1977 * handle some features for us. 1978 * For higher-level behavior differences, other checks should be preferred. 1979 * @hide 1980 */ 1981 public static final boolean IS_ARC = 1982 SystemProperties.getBoolean("ro.boot.container", false); 1983 1984 /** 1985 * Specifies whether the permissions needed by a legacy app should be 1986 * reviewed before any of its components can run. A legacy app is one 1987 * with targetSdkVersion < 23, i.e apps using the old permission model. 1988 * If review is not required, permissions are reviewed before the app 1989 * is installed. 1990 * 1991 * @hide 1992 * @removed 1993 */ 1994 @SystemApi 1995 public static final boolean PERMISSIONS_REVIEW_REQUIRED = true; 1996 1997 /** 1998 * Returns the version string for the radio firmware. May return 1999 * null (if, for instance, the radio is not currently on). 2000 */ getRadioVersion()2001 public static String getRadioVersion() { 2002 return joinListOrElse(TelephonyProperties.baseband_version(), null); 2003 } 2004 2005 @UnsupportedAppUsage getString(String property)2006 private static String getString(String property) { 2007 return SystemProperties.get(property, UNKNOWN); 2008 } 2009 /** 2010 * Return attestation specific proerties. 2011 * @param property model, name, brand, device or manufacturer. 2012 * @return property value or UNKNOWN 2013 */ getVendorDeviceIdProperty(String property)2014 private static String getVendorDeviceIdProperty(String property) { 2015 String attestProp = getString( 2016 TextUtils.formatSimple("ro.product.%s_for_attestation", property)); 2017 return attestProp.equals(UNKNOWN) 2018 ? getString(TextUtils.formatSimple("ro.product.vendor.%s", property)) : attestProp; 2019 } 2020 getStringList(String property, String separator)2021 private static String[] getStringList(String property, String separator) { 2022 String value = SystemProperties.get(property); 2023 if (value.isEmpty()) { 2024 return new String[0]; 2025 } else { 2026 return value.split(separator); 2027 } 2028 } 2029 2030 @UnsupportedAppUsage getLong(String property)2031 private static long getLong(String property) { 2032 try { 2033 return Long.parseLong(SystemProperties.get(property)); 2034 } catch (NumberFormatException e) { 2035 return -1; 2036 } 2037 } 2038 joinListOrElse(List<T> list, String defaultValue)2039 private static <T> String joinListOrElse(List<T> list, String defaultValue) { 2040 String ret = list.stream().map(elem -> elem == null ? "" : elem.toString()) 2041 .collect(Collectors.joining(",")); 2042 return ret.isEmpty() ? defaultValue : ret; 2043 } 2044 } 2045