1 /* 2 * Copyright (C) 2008 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.content.res; 18 19 import android.content.pm.ActivityInfo; 20 import android.os.Parcel; 21 import android.os.Parcelable; 22 import android.util.LocaleUtil; 23 24 import java.util.Locale; 25 26 /** 27 * This class describes all device configuration information that can 28 * impact the resources the application retrieves. This includes both 29 * user-specified configuration options (locale and scaling) as well 30 * as device configurations (such as input modes, screen size and screen orientation). 31 * <p>You can acquire this object from {@link Resources}, using {@link 32 * Resources#getConfiguration}. Thus, from an activity, you can get it by chaining the request 33 * with {@link android.app.Activity#getResources}:</p> 34 * <pre>Configuration config = getResources().getConfiguration();</pre> 35 */ 36 public final class Configuration implements Parcelable, Comparable<Configuration> { 37 /** 38 * Current user preference for the scaling factor for fonts, relative 39 * to the base density scaling. 40 */ 41 public float fontScale; 42 43 /** 44 * IMSI MCC (Mobile Country Code). 0 if undefined. 45 */ 46 public int mcc; 47 48 /** 49 * IMSI MNC (Mobile Network Code). 0 if undefined. 50 */ 51 public int mnc; 52 53 /** 54 * Current user preference for the locale. 55 */ 56 public Locale locale; 57 58 /** 59 * Locale should persist on setting. This is hidden because it is really 60 * questionable whether this is the right way to expose the functionality. 61 * @hide 62 */ 63 public boolean userSetLocale; 64 65 /** Constant for {@link #screenLayout}: bits that encode the size. */ 66 public static final int SCREENLAYOUT_SIZE_MASK = 0x0f; 67 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 68 * value indicating that no size has been set. */ 69 public static final int SCREENLAYOUT_SIZE_UNDEFINED = 0x00; 70 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 71 * value indicating the screen is at least approximately 320x426 dp units. 72 * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 73 * Multiple Screens</a> for more information. */ 74 public static final int SCREENLAYOUT_SIZE_SMALL = 0x01; 75 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 76 * value indicating the screen is at least approximately 320x470 dp units. 77 * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 78 * Multiple Screens</a> for more information. */ 79 public static final int SCREENLAYOUT_SIZE_NORMAL = 0x02; 80 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 81 * value indicating the screen is at least approximately 480x640 dp units. 82 * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 83 * Multiple Screens</a> for more information. */ 84 public static final int SCREENLAYOUT_SIZE_LARGE = 0x03; 85 /** Constant for {@link #screenLayout}: a {@link #SCREENLAYOUT_SIZE_MASK} 86 * value indicating the screen is at least approximately 720x960 dp units. 87 * See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 88 * Multiple Screens</a> for more information.*/ 89 public static final int SCREENLAYOUT_SIZE_XLARGE = 0x04; 90 91 public static final int SCREENLAYOUT_LONG_MASK = 0x30; 92 public static final int SCREENLAYOUT_LONG_UNDEFINED = 0x00; 93 public static final int SCREENLAYOUT_LONG_NO = 0x10; 94 public static final int SCREENLAYOUT_LONG_YES = 0x20; 95 96 /** 97 * Special flag we generate to indicate that the screen layout requires 98 * us to use a compatibility mode for apps that are not modern layout 99 * aware. 100 * @hide 101 */ 102 public static final int SCREENLAYOUT_COMPAT_NEEDED = 0x10000000; 103 104 /** 105 * Bit mask of overall layout of the screen. Currently there are two 106 * fields: 107 * <p>The {@link #SCREENLAYOUT_SIZE_MASK} bits define the overall size 108 * of the screen. They may be one of 109 * {@link #SCREENLAYOUT_SIZE_SMALL}, {@link #SCREENLAYOUT_SIZE_NORMAL}, 110 * {@link #SCREENLAYOUT_SIZE_LARGE}, or {@link #SCREENLAYOUT_SIZE_XLARGE}. 111 * 112 * <p>The {@link #SCREENLAYOUT_LONG_MASK} defines whether the screen 113 * is wider/taller than normal. They may be one of 114 * {@link #SCREENLAYOUT_LONG_NO} or {@link #SCREENLAYOUT_LONG_YES}. 115 * 116 * <p>See <a href="{@docRoot}guide/practices/screens_support.html">Supporting 117 * Multiple Screens</a> for more information. 118 */ 119 public int screenLayout; 120 121 /** 122 * Check if the Configuration's current {@link #screenLayout} is at 123 * least the given size. 124 * 125 * @param size The desired size, either {@link #SCREENLAYOUT_SIZE_SMALL}, 126 * {@link #SCREENLAYOUT_SIZE_NORMAL}, {@link #SCREENLAYOUT_SIZE_LARGE}, or 127 * {@link #SCREENLAYOUT_SIZE_XLARGE}. 128 * @return Returns true if the current screen layout size is at least 129 * the given size. 130 */ isLayoutSizeAtLeast(int size)131 public boolean isLayoutSizeAtLeast(int size) { 132 int cur = screenLayout&SCREENLAYOUT_SIZE_MASK; 133 if (cur == SCREENLAYOUT_SIZE_UNDEFINED) return false; 134 return cur >= size; 135 } 136 137 public static final int TOUCHSCREEN_UNDEFINED = 0; 138 public static final int TOUCHSCREEN_NOTOUCH = 1; 139 public static final int TOUCHSCREEN_STYLUS = 2; 140 public static final int TOUCHSCREEN_FINGER = 3; 141 142 /** 143 * The kind of touch screen attached to the device. 144 * One of: {@link #TOUCHSCREEN_NOTOUCH}, {@link #TOUCHSCREEN_STYLUS}, 145 * {@link #TOUCHSCREEN_FINGER}. 146 */ 147 public int touchscreen; 148 149 public static final int KEYBOARD_UNDEFINED = 0; 150 public static final int KEYBOARD_NOKEYS = 1; 151 public static final int KEYBOARD_QWERTY = 2; 152 public static final int KEYBOARD_12KEY = 3; 153 154 /** 155 * The kind of keyboard attached to the device. 156 * One of: {@link #KEYBOARD_NOKEYS}, {@link #KEYBOARD_QWERTY}, 157 * {@link #KEYBOARD_12KEY}. 158 */ 159 public int keyboard; 160 161 public static final int KEYBOARDHIDDEN_UNDEFINED = 0; 162 public static final int KEYBOARDHIDDEN_NO = 1; 163 public static final int KEYBOARDHIDDEN_YES = 2; 164 /** Constant matching actual resource implementation. {@hide} */ 165 public static final int KEYBOARDHIDDEN_SOFT = 3; 166 167 /** 168 * A flag indicating whether any keyboard is available. Unlike 169 * {@link #hardKeyboardHidden}, this also takes into account a soft 170 * keyboard, so if the hard keyboard is hidden but there is soft 171 * keyboard available, it will be set to NO. Value is one of: 172 * {@link #KEYBOARDHIDDEN_NO}, {@link #KEYBOARDHIDDEN_YES}. 173 */ 174 public int keyboardHidden; 175 176 public static final int HARDKEYBOARDHIDDEN_UNDEFINED = 0; 177 public static final int HARDKEYBOARDHIDDEN_NO = 1; 178 public static final int HARDKEYBOARDHIDDEN_YES = 2; 179 180 /** 181 * A flag indicating whether the hard keyboard has been hidden. This will 182 * be set on a device with a mechanism to hide the keyboard from the 183 * user, when that mechanism is closed. One of: 184 * {@link #HARDKEYBOARDHIDDEN_NO}, {@link #HARDKEYBOARDHIDDEN_YES}. 185 */ 186 public int hardKeyboardHidden; 187 188 public static final int NAVIGATION_UNDEFINED = 0; 189 public static final int NAVIGATION_NONAV = 1; 190 public static final int NAVIGATION_DPAD = 2; 191 public static final int NAVIGATION_TRACKBALL = 3; 192 public static final int NAVIGATION_WHEEL = 4; 193 194 /** 195 * The kind of navigation method available on the device. 196 * One of: {@link #NAVIGATION_NONAV}, {@link #NAVIGATION_DPAD}, 197 * {@link #NAVIGATION_TRACKBALL}, {@link #NAVIGATION_WHEEL}. 198 */ 199 public int navigation; 200 201 public static final int NAVIGATIONHIDDEN_UNDEFINED = 0; 202 public static final int NAVIGATIONHIDDEN_NO = 1; 203 public static final int NAVIGATIONHIDDEN_YES = 2; 204 205 /** 206 * A flag indicating whether any 5-way or DPAD navigation available. 207 * This will be set on a device with a mechanism to hide the navigation 208 * controls from the user, when that mechanism is closed. One of: 209 * {@link #NAVIGATIONHIDDEN_NO}, {@link #NAVIGATIONHIDDEN_YES}. 210 */ 211 public int navigationHidden; 212 213 public static final int ORIENTATION_UNDEFINED = 0; 214 public static final int ORIENTATION_PORTRAIT = 1; 215 public static final int ORIENTATION_LANDSCAPE = 2; 216 public static final int ORIENTATION_SQUARE = 3; 217 218 /** 219 * Overall orientation of the screen. May be one of 220 * {@link #ORIENTATION_LANDSCAPE}, {@link #ORIENTATION_PORTRAIT}, 221 * or {@link #ORIENTATION_SQUARE}. 222 */ 223 public int orientation; 224 225 public static final int UI_MODE_TYPE_MASK = 0x0f; 226 public static final int UI_MODE_TYPE_UNDEFINED = 0x00; 227 public static final int UI_MODE_TYPE_NORMAL = 0x01; 228 public static final int UI_MODE_TYPE_DESK = 0x02; 229 public static final int UI_MODE_TYPE_CAR = 0x03; 230 public static final int UI_MODE_TYPE_TELEVISION = 0x04; 231 232 public static final int UI_MODE_NIGHT_MASK = 0x30; 233 public static final int UI_MODE_NIGHT_UNDEFINED = 0x00; 234 public static final int UI_MODE_NIGHT_NO = 0x10; 235 public static final int UI_MODE_NIGHT_YES = 0x20; 236 237 /** 238 * Bit mask of the ui mode. Currently there are two fields: 239 * <p>The {@link #UI_MODE_TYPE_MASK} bits define the overall ui mode of the 240 * device. They may be one of {@link #UI_MODE_TYPE_UNDEFINED}, 241 * {@link #UI_MODE_TYPE_NORMAL}, {@link #UI_MODE_TYPE_DESK}, 242 * or {@link #UI_MODE_TYPE_CAR}. 243 * 244 * <p>The {@link #UI_MODE_NIGHT_MASK} defines whether the screen 245 * is in a special mode. They may be one of {@link #UI_MODE_NIGHT_UNDEFINED}, 246 * {@link #UI_MODE_NIGHT_NO} or {@link #UI_MODE_NIGHT_YES}. 247 */ 248 public int uiMode; 249 250 public static final int SCREEN_WIDTH_DP_UNDEFINED = 0; 251 252 /** 253 * The current width of the available screen space, in dp units. 254 */ 255 public int screenWidthDp; 256 257 public static final int SCREEN_HEIGHT_DP_UNDEFINED = 0; 258 259 /** 260 * The current height of the available screen space, in dp units. 261 */ 262 public int screenHeightDp; 263 264 public static final int SMALLEST_SCREEN_WIDTH_DP_UNDEFINED = 0; 265 266 /** 267 * The smallest screen size an application will see in normal operation. 268 * This is the smallest value of both screenWidthDp and screenHeightDp 269 * in both portrait and landscape. 270 */ 271 public int smallestScreenWidthDp; 272 273 /** @hide Hack to get this information from WM to app running in compat mode. */ 274 public int compatScreenWidthDp; 275 /** @hide Hack to get this information from WM to app running in compat mode. */ 276 public int compatScreenHeightDp; 277 /** @hide Hack to get this information from WM to app running in compat mode. */ 278 public int compatSmallestScreenWidthDp; 279 280 /** 281 * @hide The text layout direction associated to the current Locale 282 */ 283 public int textLayoutDirection; 284 285 /** 286 * @hide Internal book-keeping. 287 */ 288 public int seq; 289 290 /** 291 * Construct an invalid Configuration. You must call {@link #setToDefaults} 292 * for this object to be valid. {@more} 293 */ Configuration()294 public Configuration() { 295 setToDefaults(); 296 } 297 298 /** 299 * Makes a deep copy suitable for modification. 300 */ Configuration(Configuration o)301 public Configuration(Configuration o) { 302 setTo(o); 303 } 304 setTo(Configuration o)305 public void setTo(Configuration o) { 306 fontScale = o.fontScale; 307 mcc = o.mcc; 308 mnc = o.mnc; 309 if (o.locale != null) { 310 locale = (Locale) o.locale.clone(); 311 textLayoutDirection = o.textLayoutDirection; 312 } 313 userSetLocale = o.userSetLocale; 314 touchscreen = o.touchscreen; 315 keyboard = o.keyboard; 316 keyboardHidden = o.keyboardHidden; 317 hardKeyboardHidden = o.hardKeyboardHidden; 318 navigation = o.navigation; 319 navigationHidden = o.navigationHidden; 320 orientation = o.orientation; 321 screenLayout = o.screenLayout; 322 uiMode = o.uiMode; 323 screenWidthDp = o.screenWidthDp; 324 screenHeightDp = o.screenHeightDp; 325 smallestScreenWidthDp = o.smallestScreenWidthDp; 326 compatScreenWidthDp = o.compatScreenWidthDp; 327 compatScreenHeightDp = o.compatScreenHeightDp; 328 compatSmallestScreenWidthDp = o.compatSmallestScreenWidthDp; 329 seq = o.seq; 330 } 331 toString()332 public String toString() { 333 StringBuilder sb = new StringBuilder(128); 334 sb.append("{"); 335 sb.append(fontScale); 336 sb.append(" "); 337 sb.append(mcc); 338 sb.append("mcc"); 339 sb.append(mnc); 340 sb.append("mnc"); 341 if (locale != null) { 342 sb.append(" "); 343 sb.append(locale); 344 } else { 345 sb.append(" (no locale)"); 346 } 347 switch (textLayoutDirection) { 348 case LocaleUtil.TEXT_LAYOUT_DIRECTION_RTL_DO_NOT_USE: sb.append(" rtl"); break; 349 default: sb.append(" layoutdir="); sb.append(textLayoutDirection); break; 350 } 351 if (smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED) { 352 sb.append(" sw"); sb.append(smallestScreenWidthDp); sb.append("dp"); 353 } else { 354 sb.append(" ?swdp"); 355 } 356 if (screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED) { 357 sb.append(" w"); sb.append(screenWidthDp); sb.append("dp"); 358 } else { 359 sb.append(" ?wdp"); 360 } 361 if (screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED) { 362 sb.append(" h"); sb.append(screenHeightDp); sb.append("dp"); 363 } else { 364 sb.append(" ?hdp"); 365 } 366 switch ((screenLayout&SCREENLAYOUT_SIZE_MASK)) { 367 case SCREENLAYOUT_SIZE_UNDEFINED: sb.append(" ?lsize"); break; 368 case SCREENLAYOUT_SIZE_SMALL: sb.append(" smll"); break; 369 case SCREENLAYOUT_SIZE_NORMAL: sb.append(" nrml"); break; 370 case SCREENLAYOUT_SIZE_LARGE: sb.append(" lrg"); break; 371 case SCREENLAYOUT_SIZE_XLARGE: sb.append(" xlrg"); break; 372 default: sb.append(" layoutSize="); 373 sb.append(screenLayout&SCREENLAYOUT_SIZE_MASK); break; 374 } 375 switch ((screenLayout&SCREENLAYOUT_LONG_MASK)) { 376 case SCREENLAYOUT_LONG_UNDEFINED: sb.append(" ?long"); break; 377 case SCREENLAYOUT_LONG_NO: /* not-long is not interesting to print */ break; 378 case SCREENLAYOUT_LONG_YES: sb.append(" long"); break; 379 default: sb.append(" layoutLong="); 380 sb.append(screenLayout&SCREENLAYOUT_LONG_MASK); break; 381 } 382 switch (orientation) { 383 case ORIENTATION_UNDEFINED: sb.append(" ?orien"); break; 384 case ORIENTATION_LANDSCAPE: sb.append(" land"); break; 385 case ORIENTATION_PORTRAIT: sb.append(" port"); break; 386 default: sb.append(" orien="); sb.append(orientation); break; 387 } 388 switch ((uiMode&UI_MODE_TYPE_MASK)) { 389 case UI_MODE_TYPE_UNDEFINED: sb.append(" ?uimode"); break; 390 case UI_MODE_TYPE_NORMAL: /* normal is not interesting to print */ break; 391 case UI_MODE_TYPE_DESK: sb.append(" desk"); break; 392 case UI_MODE_TYPE_CAR: sb.append(" car"); break; 393 case UI_MODE_TYPE_TELEVISION: sb.append(" television"); break; 394 default: sb.append(" uimode="); sb.append(uiMode&UI_MODE_TYPE_MASK); break; 395 } 396 switch ((uiMode&UI_MODE_NIGHT_MASK)) { 397 case UI_MODE_NIGHT_UNDEFINED: sb.append(" ?night"); break; 398 case UI_MODE_NIGHT_NO: /* not-night is not interesting to print */ break; 399 case UI_MODE_NIGHT_YES: sb.append(" night"); break; 400 default: sb.append(" night="); sb.append(uiMode&UI_MODE_NIGHT_MASK); break; 401 } 402 switch (touchscreen) { 403 case TOUCHSCREEN_UNDEFINED: sb.append(" ?touch"); break; 404 case TOUCHSCREEN_NOTOUCH: sb.append(" -touch"); break; 405 case TOUCHSCREEN_STYLUS: sb.append(" stylus"); break; 406 case TOUCHSCREEN_FINGER: sb.append(" finger"); break; 407 default: sb.append(" touch="); sb.append(touchscreen); break; 408 } 409 switch (keyboard) { 410 case KEYBOARD_UNDEFINED: sb.append(" ?keyb"); break; 411 case KEYBOARD_NOKEYS: sb.append(" -keyb"); break; 412 case KEYBOARD_QWERTY: sb.append(" qwerty"); break; 413 case KEYBOARD_12KEY: sb.append(" 12key"); break; 414 default: sb.append(" keys="); sb.append(keyboard); break; 415 } 416 switch (keyboardHidden) { 417 case KEYBOARDHIDDEN_UNDEFINED: sb.append("/?"); break; 418 case KEYBOARDHIDDEN_NO: sb.append("/v"); break; 419 case KEYBOARDHIDDEN_YES: sb.append("/h"); break; 420 case KEYBOARDHIDDEN_SOFT: sb.append("/s"); break; 421 default: sb.append("/"); sb.append(keyboardHidden); break; 422 } 423 switch (hardKeyboardHidden) { 424 case HARDKEYBOARDHIDDEN_UNDEFINED: sb.append("/?"); break; 425 case HARDKEYBOARDHIDDEN_NO: sb.append("/v"); break; 426 case HARDKEYBOARDHIDDEN_YES: sb.append("/h"); break; 427 default: sb.append("/"); sb.append(hardKeyboardHidden); break; 428 } 429 switch (navigation) { 430 case NAVIGATION_UNDEFINED: sb.append(" ?nav"); break; 431 case NAVIGATION_NONAV: sb.append(" -nav"); break; 432 case NAVIGATION_DPAD: sb.append(" dpad"); break; 433 case NAVIGATION_TRACKBALL: sb.append(" tball"); break; 434 case NAVIGATION_WHEEL: sb.append(" wheel"); break; 435 default: sb.append(" nav="); sb.append(navigation); break; 436 } 437 switch (navigationHidden) { 438 case NAVIGATIONHIDDEN_UNDEFINED: sb.append("/?"); break; 439 case NAVIGATIONHIDDEN_NO: sb.append("/v"); break; 440 case NAVIGATIONHIDDEN_YES: sb.append("/h"); break; 441 default: sb.append("/"); sb.append(navigationHidden); break; 442 } 443 if (seq != 0) { 444 sb.append(" s."); 445 sb.append(seq); 446 } 447 sb.append('}'); 448 return sb.toString(); 449 } 450 451 /** 452 * Set this object to the system defaults. 453 */ setToDefaults()454 public void setToDefaults() { 455 fontScale = 1; 456 mcc = mnc = 0; 457 locale = null; 458 userSetLocale = false; 459 touchscreen = TOUCHSCREEN_UNDEFINED; 460 keyboard = KEYBOARD_UNDEFINED; 461 keyboardHidden = KEYBOARDHIDDEN_UNDEFINED; 462 hardKeyboardHidden = HARDKEYBOARDHIDDEN_UNDEFINED; 463 navigation = NAVIGATION_UNDEFINED; 464 navigationHidden = NAVIGATIONHIDDEN_UNDEFINED; 465 orientation = ORIENTATION_UNDEFINED; 466 screenLayout = SCREENLAYOUT_SIZE_UNDEFINED; 467 uiMode = UI_MODE_TYPE_UNDEFINED; 468 screenWidthDp = compatScreenWidthDp = SCREEN_WIDTH_DP_UNDEFINED; 469 screenHeightDp = compatScreenHeightDp = SCREEN_HEIGHT_DP_UNDEFINED; 470 smallestScreenWidthDp = compatSmallestScreenWidthDp = SMALLEST_SCREEN_WIDTH_DP_UNDEFINED; 471 textLayoutDirection = LocaleUtil.TEXT_LAYOUT_DIRECTION_LTR_DO_NOT_USE; 472 seq = 0; 473 } 474 475 /** {@hide} */ makeDefault()476 @Deprecated public void makeDefault() { 477 setToDefaults(); 478 } 479 480 /** 481 * Copy the fields from delta into this Configuration object, keeping 482 * track of which ones have changed. Any undefined fields in 483 * <var>delta</var> are ignored and not copied in to the current 484 * Configuration. 485 * @return Returns a bit mask of the changed fields, as per 486 * {@link #diff}. 487 */ updateFrom(Configuration delta)488 public int updateFrom(Configuration delta) { 489 int changed = 0; 490 if (delta.fontScale > 0 && fontScale != delta.fontScale) { 491 changed |= ActivityInfo.CONFIG_FONT_SCALE; 492 fontScale = delta.fontScale; 493 } 494 if (delta.mcc != 0 && mcc != delta.mcc) { 495 changed |= ActivityInfo.CONFIG_MCC; 496 mcc = delta.mcc; 497 } 498 if (delta.mnc != 0 && mnc != delta.mnc) { 499 changed |= ActivityInfo.CONFIG_MNC; 500 mnc = delta.mnc; 501 } 502 if (delta.locale != null 503 && (locale == null || !locale.equals(delta.locale))) { 504 changed |= ActivityInfo.CONFIG_LOCALE; 505 locale = delta.locale != null 506 ? (Locale) delta.locale.clone() : null; 507 textLayoutDirection = LocaleUtil.getLayoutDirectionFromLocale(locale); 508 } 509 if (delta.userSetLocale && (!userSetLocale || ((changed & ActivityInfo.CONFIG_LOCALE) != 0))) 510 { 511 userSetLocale = true; 512 changed |= ActivityInfo.CONFIG_LOCALE; 513 } 514 if (delta.touchscreen != TOUCHSCREEN_UNDEFINED 515 && touchscreen != delta.touchscreen) { 516 changed |= ActivityInfo.CONFIG_TOUCHSCREEN; 517 touchscreen = delta.touchscreen; 518 } 519 if (delta.keyboard != KEYBOARD_UNDEFINED 520 && keyboard != delta.keyboard) { 521 changed |= ActivityInfo.CONFIG_KEYBOARD; 522 keyboard = delta.keyboard; 523 } 524 if (delta.keyboardHidden != KEYBOARDHIDDEN_UNDEFINED 525 && keyboardHidden != delta.keyboardHidden) { 526 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 527 keyboardHidden = delta.keyboardHidden; 528 } 529 if (delta.hardKeyboardHidden != HARDKEYBOARDHIDDEN_UNDEFINED 530 && hardKeyboardHidden != delta.hardKeyboardHidden) { 531 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 532 hardKeyboardHidden = delta.hardKeyboardHidden; 533 } 534 if (delta.navigation != NAVIGATION_UNDEFINED 535 && navigation != delta.navigation) { 536 changed |= ActivityInfo.CONFIG_NAVIGATION; 537 navigation = delta.navigation; 538 } 539 if (delta.navigationHidden != NAVIGATIONHIDDEN_UNDEFINED 540 && navigationHidden != delta.navigationHidden) { 541 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 542 navigationHidden = delta.navigationHidden; 543 } 544 if (delta.orientation != ORIENTATION_UNDEFINED 545 && orientation != delta.orientation) { 546 changed |= ActivityInfo.CONFIG_ORIENTATION; 547 orientation = delta.orientation; 548 } 549 if (delta.screenLayout != SCREENLAYOUT_SIZE_UNDEFINED 550 && screenLayout != delta.screenLayout) { 551 changed |= ActivityInfo.CONFIG_SCREEN_LAYOUT; 552 screenLayout = delta.screenLayout; 553 } 554 if (delta.uiMode != (UI_MODE_TYPE_UNDEFINED|UI_MODE_NIGHT_UNDEFINED) 555 && uiMode != delta.uiMode) { 556 changed |= ActivityInfo.CONFIG_UI_MODE; 557 if ((delta.uiMode&UI_MODE_TYPE_MASK) != UI_MODE_TYPE_UNDEFINED) { 558 uiMode = (uiMode&~UI_MODE_TYPE_MASK) 559 | (delta.uiMode&UI_MODE_TYPE_MASK); 560 } 561 if ((delta.uiMode&UI_MODE_NIGHT_MASK) != UI_MODE_NIGHT_UNDEFINED) { 562 uiMode = (uiMode&~UI_MODE_NIGHT_MASK) 563 | (delta.uiMode&UI_MODE_NIGHT_MASK); 564 } 565 } 566 if (delta.screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED 567 && screenWidthDp != delta.screenWidthDp) { 568 changed |= ActivityInfo.CONFIG_SCREEN_SIZE; 569 screenWidthDp = delta.screenWidthDp; 570 } 571 if (delta.screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED 572 && screenHeightDp != delta.screenHeightDp) { 573 changed |= ActivityInfo.CONFIG_SCREEN_SIZE; 574 screenHeightDp = delta.screenHeightDp; 575 } 576 if (delta.smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED) { 577 smallestScreenWidthDp = delta.smallestScreenWidthDp; 578 } 579 if (delta.compatScreenWidthDp != SCREEN_WIDTH_DP_UNDEFINED) { 580 compatScreenWidthDp = delta.compatScreenWidthDp; 581 } 582 if (delta.compatScreenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED) { 583 compatScreenHeightDp = delta.compatScreenHeightDp; 584 } 585 if (delta.compatSmallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED) { 586 compatSmallestScreenWidthDp = delta.compatSmallestScreenWidthDp; 587 } 588 589 if (delta.seq != 0) { 590 seq = delta.seq; 591 } 592 593 return changed; 594 } 595 596 /** 597 * Return a bit mask of the differences between this Configuration 598 * object and the given one. Does not change the values of either. Any 599 * undefined fields in <var>delta</var> are ignored. 600 * @return Returns a bit mask indicating which configuration 601 * values has changed, containing any combination of 602 * {@link android.content.pm.ActivityInfo#CONFIG_FONT_SCALE 603 * PackageManager.ActivityInfo.CONFIG_FONT_SCALE}, 604 * {@link android.content.pm.ActivityInfo#CONFIG_MCC 605 * PackageManager.ActivityInfo.CONFIG_MCC}, 606 * {@link android.content.pm.ActivityInfo#CONFIG_MNC 607 * PackageManager.ActivityInfo.CONFIG_MNC}, 608 * {@link android.content.pm.ActivityInfo#CONFIG_LOCALE 609 * PackageManager.ActivityInfo.CONFIG_LOCALE}, 610 * {@link android.content.pm.ActivityInfo#CONFIG_TOUCHSCREEN 611 * PackageManager.ActivityInfo.CONFIG_TOUCHSCREEN}, 612 * {@link android.content.pm.ActivityInfo#CONFIG_KEYBOARD 613 * PackageManager.ActivityInfo.CONFIG_KEYBOARD}, 614 * {@link android.content.pm.ActivityInfo#CONFIG_NAVIGATION 615 * PackageManager.ActivityInfo.CONFIG_NAVIGATION}, 616 * {@link android.content.pm.ActivityInfo#CONFIG_ORIENTATION 617 * PackageManager.ActivityInfo.CONFIG_ORIENTATION}, 618 * {@link android.content.pm.ActivityInfo#CONFIG_SCREEN_LAYOUT 619 * PackageManager.ActivityInfo.CONFIG_SCREEN_LAYOUT}, or 620 * {@link android.content.pm.ActivityInfo#CONFIG_SCREEN_SIZE 621 * PackageManager.ActivityInfo.CONFIG_SCREEN_SIZE}, or 622 * {@link android.content.pm.ActivityInfo#CONFIG_SMALLEST_SCREEN_SIZE 623 * PackageManager.ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE}. 624 */ diff(Configuration delta)625 public int diff(Configuration delta) { 626 int changed = 0; 627 if (delta.fontScale > 0 && fontScale != delta.fontScale) { 628 changed |= ActivityInfo.CONFIG_FONT_SCALE; 629 } 630 if (delta.mcc != 0 && mcc != delta.mcc) { 631 changed |= ActivityInfo.CONFIG_MCC; 632 } 633 if (delta.mnc != 0 && mnc != delta.mnc) { 634 changed |= ActivityInfo.CONFIG_MNC; 635 } 636 if (delta.locale != null 637 && (locale == null || !locale.equals(delta.locale))) { 638 changed |= ActivityInfo.CONFIG_LOCALE; 639 } 640 if (delta.touchscreen != TOUCHSCREEN_UNDEFINED 641 && touchscreen != delta.touchscreen) { 642 changed |= ActivityInfo.CONFIG_TOUCHSCREEN; 643 } 644 if (delta.keyboard != KEYBOARD_UNDEFINED 645 && keyboard != delta.keyboard) { 646 changed |= ActivityInfo.CONFIG_KEYBOARD; 647 } 648 if (delta.keyboardHidden != KEYBOARDHIDDEN_UNDEFINED 649 && keyboardHidden != delta.keyboardHidden) { 650 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 651 } 652 if (delta.hardKeyboardHidden != HARDKEYBOARDHIDDEN_UNDEFINED 653 && hardKeyboardHidden != delta.hardKeyboardHidden) { 654 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 655 } 656 if (delta.navigation != NAVIGATION_UNDEFINED 657 && navigation != delta.navigation) { 658 changed |= ActivityInfo.CONFIG_NAVIGATION; 659 } 660 if (delta.navigationHidden != NAVIGATIONHIDDEN_UNDEFINED 661 && navigationHidden != delta.navigationHidden) { 662 changed |= ActivityInfo.CONFIG_KEYBOARD_HIDDEN; 663 } 664 if (delta.orientation != ORIENTATION_UNDEFINED 665 && orientation != delta.orientation) { 666 changed |= ActivityInfo.CONFIG_ORIENTATION; 667 } 668 if (delta.screenLayout != SCREENLAYOUT_SIZE_UNDEFINED 669 && screenLayout != delta.screenLayout) { 670 changed |= ActivityInfo.CONFIG_SCREEN_LAYOUT; 671 } 672 if (delta.uiMode != (UI_MODE_TYPE_UNDEFINED|UI_MODE_NIGHT_UNDEFINED) 673 && uiMode != delta.uiMode) { 674 changed |= ActivityInfo.CONFIG_UI_MODE; 675 } 676 if (delta.screenWidthDp != SCREEN_WIDTH_DP_UNDEFINED 677 && screenWidthDp != delta.screenWidthDp) { 678 changed |= ActivityInfo.CONFIG_SCREEN_SIZE; 679 } 680 if (delta.screenHeightDp != SCREEN_HEIGHT_DP_UNDEFINED 681 && screenHeightDp != delta.screenHeightDp) { 682 changed |= ActivityInfo.CONFIG_SCREEN_SIZE; 683 } 684 if (delta.smallestScreenWidthDp != SMALLEST_SCREEN_WIDTH_DP_UNDEFINED 685 && smallestScreenWidthDp != delta.smallestScreenWidthDp) { 686 changed |= ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE; 687 } 688 689 return changed; 690 } 691 692 /** 693 * Determine if a new resource needs to be loaded from the bit set of 694 * configuration changes returned by {@link #updateFrom(Configuration)}. 695 * 696 * @param configChanges The mask of changes configurations as returned by 697 * {@link #updateFrom(Configuration)}. 698 * @param interestingChanges The configuration changes that the resource 699 * can handled, as given in {@link android.util.TypedValue#changingConfigurations}. 700 * 701 * @return Return true if the resource needs to be loaded, else false. 702 */ needNewResources(int configChanges, int interestingChanges)703 public static boolean needNewResources(int configChanges, int interestingChanges) { 704 return (configChanges & (interestingChanges|ActivityInfo.CONFIG_FONT_SCALE)) != 0; 705 } 706 707 /** 708 * @hide Return true if the sequence of 'other' is better than this. Assumes 709 * that 'this' is your current sequence and 'other' is a new one you have 710 * received some how and want to compare with what you have. 711 */ isOtherSeqNewer(Configuration other)712 public boolean isOtherSeqNewer(Configuration other) { 713 if (other == null) { 714 // Sanity check. 715 return false; 716 } 717 if (other.seq == 0) { 718 // If the other sequence is not specified, then we must assume 719 // it is newer since we don't know any better. 720 return true; 721 } 722 if (seq == 0) { 723 // If this sequence is not specified, then we also consider the 724 // other is better. Yes we have a preference for other. Sue us. 725 return true; 726 } 727 int diff = other.seq - seq; 728 if (diff > 0x10000) { 729 // If there has been a sufficiently large jump, assume the 730 // sequence has wrapped around. 731 return false; 732 } 733 return diff > 0; 734 } 735 736 /** 737 * Parcelable methods 738 */ describeContents()739 public int describeContents() { 740 return 0; 741 } 742 writeToParcel(Parcel dest, int flags)743 public void writeToParcel(Parcel dest, int flags) { 744 dest.writeFloat(fontScale); 745 dest.writeInt(mcc); 746 dest.writeInt(mnc); 747 if (locale == null) { 748 dest.writeInt(0); 749 } else { 750 dest.writeInt(1); 751 dest.writeString(locale.getLanguage()); 752 dest.writeString(locale.getCountry()); 753 dest.writeString(locale.getVariant()); 754 } 755 if(userSetLocale) { 756 dest.writeInt(1); 757 } else { 758 dest.writeInt(0); 759 } 760 dest.writeInt(touchscreen); 761 dest.writeInt(keyboard); 762 dest.writeInt(keyboardHidden); 763 dest.writeInt(hardKeyboardHidden); 764 dest.writeInt(navigation); 765 dest.writeInt(navigationHidden); 766 dest.writeInt(orientation); 767 dest.writeInt(screenLayout); 768 dest.writeInt(uiMode); 769 dest.writeInt(screenWidthDp); 770 dest.writeInt(screenHeightDp); 771 dest.writeInt(smallestScreenWidthDp); 772 dest.writeInt(compatScreenWidthDp); 773 dest.writeInt(compatScreenHeightDp); 774 dest.writeInt(compatSmallestScreenWidthDp); 775 dest.writeInt(textLayoutDirection); 776 dest.writeInt(seq); 777 } 778 readFromParcel(Parcel source)779 public void readFromParcel(Parcel source) { 780 fontScale = source.readFloat(); 781 mcc = source.readInt(); 782 mnc = source.readInt(); 783 if (source.readInt() != 0) { 784 locale = new Locale(source.readString(), source.readString(), 785 source.readString()); 786 } 787 userSetLocale = (source.readInt()==1); 788 touchscreen = source.readInt(); 789 keyboard = source.readInt(); 790 keyboardHidden = source.readInt(); 791 hardKeyboardHidden = source.readInt(); 792 navigation = source.readInt(); 793 navigationHidden = source.readInt(); 794 orientation = source.readInt(); 795 screenLayout = source.readInt(); 796 uiMode = source.readInt(); 797 screenWidthDp = source.readInt(); 798 screenHeightDp = source.readInt(); 799 smallestScreenWidthDp = source.readInt(); 800 compatScreenWidthDp = source.readInt(); 801 compatScreenHeightDp = source.readInt(); 802 compatSmallestScreenWidthDp = source.readInt(); 803 textLayoutDirection = source.readInt(); 804 seq = source.readInt(); 805 } 806 807 public static final Parcelable.Creator<Configuration> CREATOR 808 = new Parcelable.Creator<Configuration>() { 809 public Configuration createFromParcel(Parcel source) { 810 return new Configuration(source); 811 } 812 813 public Configuration[] newArray(int size) { 814 return new Configuration[size]; 815 } 816 }; 817 818 /** 819 * Construct this Configuration object, reading from the Parcel. 820 */ Configuration(Parcel source)821 private Configuration(Parcel source) { 822 readFromParcel(source); 823 } 824 compareTo(Configuration that)825 public int compareTo(Configuration that) { 826 int n; 827 float a = this.fontScale; 828 float b = that.fontScale; 829 if (a < b) return -1; 830 if (a > b) return 1; 831 n = this.mcc - that.mcc; 832 if (n != 0) return n; 833 n = this.mnc - that.mnc; 834 if (n != 0) return n; 835 if (this.locale == null) { 836 if (that.locale != null) return 1; 837 } else if (that.locale == null) { 838 return -1; 839 } else { 840 n = this.locale.getLanguage().compareTo(that.locale.getLanguage()); 841 if (n != 0) return n; 842 n = this.locale.getCountry().compareTo(that.locale.getCountry()); 843 if (n != 0) return n; 844 n = this.locale.getVariant().compareTo(that.locale.getVariant()); 845 if (n != 0) return n; 846 } 847 n = this.touchscreen - that.touchscreen; 848 if (n != 0) return n; 849 n = this.keyboard - that.keyboard; 850 if (n != 0) return n; 851 n = this.keyboardHidden - that.keyboardHidden; 852 if (n != 0) return n; 853 n = this.hardKeyboardHidden - that.hardKeyboardHidden; 854 if (n != 0) return n; 855 n = this.navigation - that.navigation; 856 if (n != 0) return n; 857 n = this.navigationHidden - that.navigationHidden; 858 if (n != 0) return n; 859 n = this.orientation - that.orientation; 860 if (n != 0) return n; 861 n = this.screenLayout - that.screenLayout; 862 if (n != 0) return n; 863 n = this.uiMode - that.uiMode; 864 if (n != 0) return n; 865 n = this.screenWidthDp - that.screenWidthDp; 866 if (n != 0) return n; 867 n = this.screenHeightDp - that.screenHeightDp; 868 if (n != 0) return n; 869 n = this.smallestScreenWidthDp - that.smallestScreenWidthDp; 870 //if (n != 0) return n; 871 return n; 872 } 873 equals(Configuration that)874 public boolean equals(Configuration that) { 875 if (that == null) return false; 876 if (that == this) return true; 877 return this.compareTo(that) == 0; 878 } 879 equals(Object that)880 public boolean equals(Object that) { 881 try { 882 return equals((Configuration)that); 883 } catch (ClassCastException e) { 884 } 885 return false; 886 } 887 hashCode()888 public int hashCode() { 889 int result = 17; 890 result = 31 * result + Float.floatToIntBits(fontScale); 891 result = 31 * result + mcc; 892 result = 31 * result + mnc; 893 result = 31 * result + (locale != null ? locale.hashCode() : 0); 894 result = 31 * result + touchscreen; 895 result = 31 * result + keyboard; 896 result = 31 * result + keyboardHidden; 897 result = 31 * result + hardKeyboardHidden; 898 result = 31 * result + navigation; 899 result = 31 * result + navigationHidden; 900 result = 31 * result + orientation; 901 result = 31 * result + screenLayout; 902 result = 31 * result + uiMode; 903 result = 31 * result + screenWidthDp; 904 result = 31 * result + screenHeightDp; 905 result = 31 * result + smallestScreenWidthDp; 906 return result; 907 } 908 } 909