1fullpage=true 2no_footer_links=true 3landing.page=true 4page.metaDescription=The official site for the Android Open Source Project. 5header.hide=1 6@jd:body 7 8<!-- 9 Copyright 2016 The Android Open Source Project 10 11 Licensed under the Apache License, Version 2.0 (the "License"); 12 you may not use this file except in compliance with the License. 13 You may obtain a copy of the License at 14 15 http://www.apache.org/licenses/LICENSE-2.0 16 17 Unless required by applicable law or agreed to in writing, software 18 distributed under the License is distributed on an "AS IS" BASIS, 19 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 20 See the License for the specific language governing permissions and 21 limitations under the License. 22--> 23<div class="wrap"> 24 25 <div class="landing-banner"> 26 <h1 itemprop="name" style="margin-bottom:0;">Welcome to the Android Open Source Project!</h1> 27 28<p>Android is an open source software stack for a wide range of mobile devices 29and a corresponding open source project led by Google. This site offers the 30information and source code you need to create custom variants of the Android 31stack, port devices and accessories to the Android platform, and ensure your 32devices meet compatibility requirements.</p> 33 34<h2 align="center">Android 7.0 Updates Available</h2> 35 </div> 36 37</div> 38 39<div class="wrap"> 40 41 <div class="landing-docs"> 42 <div class="col-10"> 43 <h3>What's New</h3> 44 45<h4>Key Features</h4> 46<p> 47<a href="{@docRoot}devices/tech/dalvik/jit-compiler.html"><strong>Just-in-time 48(JIT) compiler</strong></a> with code profiling to Android runtime (ART) 49continually improves app performance. 50<a href="{@docRoot}security/encryption/file-based.html"><strong>Direct boot and 51file-based encryption</strong></a> allows certain apps to run securely when 52the device is powered on but not unlocked. 53<a href="{@docRoot}devices/tech/display/multi-window.html"><strong>Multi-window</strong></a> 54support enables simultaneous display of multiple apps on a device screen. 55The <a href="{@docRoot}devices/automotive.html"><strong>Vehicle 56HAL</strong></a> enables Android Automotive implementations.</p> 57 58<h4>Security Improvements</h4> 59<p> 60Android now strictly enforces 61<a href="{@docRoot}security/verifiedboot/verified-boot.html"><strong>verified 62boot</strong></a> and requires a 63<a href="{@docRoot}security/overview/app-security.html#certificate-authorities"><strong>same-system 64trusted CA store</strong></a>. 65<a href="{@docRoot}security/apksigning/index.html#v2"><strong>APK signature 66scheme v2</strong></a> performs signature checking across the entire file. 67Security hardening of <a href="{@docRoot}devices/media/framework-hardening.html"><strong>media 68framework</strong></a> and 69<a href="{@docRoot}devices/camera/versioning.html#hardening">camera service</strong></a> 70splits mediaserver into multiple processes with restricted permissions and 71capabilities (may require changes to HAL implementations). 72For more changes, see 73<a href="{@docRoot}security/enhancements/enhancements70.html"><strong>7.0 74security enhancements</strong></a>.</p> 75 76<h4>Audio, Camera, & Graphics Updates</h4> 77<p> 78<a href="{@docRoot}devices/audio/implement-policy.html"><strong>Audio policy 79improvements</strong></a> include changes to policy configuration files, a 80reorganization of audio policy code, and new extensions for audio policy routing 81APIs. 82Android now supports 83<a href="{@docRoot}devices/graphics/arch-vulkan.html"><strong>Vulkan</strong></a> 84(low-overhead, cross-platform API for high-performance 3D graphics) and 85<a href="{@docRoot}devices/graphics/testing.html"><strong>OpenGL 863.2</strong></a>; check with your SoC for driver support. 87Enhancements to 88<a href="{@docRoot}devices/camera/versioning.html"><strong>camera3</strong></a> 89support devices with high-end cameras.</p> 90 91<h4>OEM Customizations</h4> 92<p>Users can now 93<a href="{@docRoot}devices/tech/connect/block-numbers.html"><strong>restrict 94calls and texts</strong></a> (impacts apps using blocking features). 95Do-not-disturb (DND) rules can now 96<a href="{@docRoot}devices/tech/display/dnd.html"><strong>suppress visual 97interruptions</strong></a>.</p> 98 99<h4>Android For Work Updates</h4> 100<p>New device administration features include 101<a href="{@docRoot}devices/tech/admin/enterprise-telephony.html"><strong>enterprise 102telephony</strong></a> (cross-profile contact searching and badging, affects 103preloaded Dialer and Contacts apps), 104<a href="{@docRoot}devices/tech/admin/implement.html#HAL_values"><strong>device 105monitoring and health reporting</strong></a> (APIs for apps to query device 106hardware state; device must report correct values in the HAL implementation), 107and 108<a href="{@docRoot}devices/tech/admin/testing-setup.html#troubleshooting"><strong>enterprise 109process logging and device owner triggered bugreports</strong></a> (collect logs 110for user actions on a managed device).</p> 111 112<h4>Power Improvements</h4> 113<p> 114<a href="{@docRoot}devices/tech/power/mgmt.html#doze"><strong>Doze</strong></a> 115now works on devices in motion. 116<a href="{@docRoot}devices/tech/power/mgmt.html#sustained_performance"><strong>Sustained 117performance</strong></a> hints can inform long-running applications of 118device-performance capabilities (requires power HAL changes). 119<a href="{@docRoot}devices/tech/connect/data-saver.html"><strong>Data 120Saver</strong></a> enables restricting background data when on cellular or 121metered networks. 122Android now collects data for 123<a href="{@docRoot}devices/tech/power/values.html#le-bt-scans"><strong>Low 124Energy (LE) scans and Bluetooth</strong></a> traffic.</p> 125 126<h4>Under the Hood</h4> 127<p>Dialer APIs handle all 128<a href="{@docRoot}devices/tech/connect/call-notification.html"><strong>call 129notification</strong></a> logic (instead of sharing with Telecom). 130<a href="{@docRoot}devices/tech/config/namespaces_libraries.html"><strong>Namespaces 131for native libraries</strong></a> prevent apps from using private platform 132native APIs. 133<a href="{@docRoot}source/running.html#flashing-a-device"><strong>Flash 134unlock</strong></a> reports the bootloader's lock status. 135<a href="{@docRoot}devices/tech/connect/ril.html"><strong>Radio 136Interface Layer (RIL)</strong></a> support includes enhancements to error codes, 137versioning, and wakelocks. 138<a href="{@docRoot}devices/tech/config/uicc.html"><strong>UICC carrier 139privilege</strong></a> rules now support Access File Rule (ARF) storage. 140Android now supports the RFID smart card system 141<a href="{@docRoot}devices/tech/connect/felica.html"><strong>Felicity Card 142(FeliCa)</strong></a>. 143Documentation updated for 144<a href="{@docRoot}devices/halref/index.html"><strong>HAL</strong></a> 145and <a href="{@docRoot}reference/packages.html"><strong>TradeFed</strong></a> 146references.</p> 147 148<!--SAVED for FUTURE REFERENCE 149<a href="{@docRoot}source/build-numbers.html"> 150 <h4>Lollipop and Marshmallow Build Numbers</h4></a> 151 <p>New <strong><a 152 href="{@docRoot}source/build-numbers.html#source-code-tags-and-builds">Build 153 Numbers</a></strong> have been published for Lollipop on Nexus 10 and 154 Marshmallow on Nexus 5, Nexus 5X, Nexus 6, Nexus 6P, Nexus 7 (flo/deb), Nexus 9 155 (volantis/volantisg), Nexus Player, and Pixel C.</p> 156 157<a href="{@docRoot}compatibility/downloads.html"> 158 <h4>Android 6.0, 5.1, and 5.0 CTS Downloads</h4></a> 159 <p>Android 6.0 R3, 5.1 R5, and 5.0 R4 Compatibility Test Suite (CTS) 160 and CTS Verifier are available for <strong><a 161 href="{@docRoot}compatibility/downloads.html">Download</a></strong>.</p> 162--> 163</div> 164 165<div class="col-5"> 166 167<h3>Getting Started</h3> 168<a href="{@docRoot}source/index.html"><h4>Explore the Source</h4></a> 169<p>Get the complete Android platform and modify and build it to suit your needs. 170You can also 171<strong><a href="https://android-review.googlesource.com/#/q/status:open">contribute 172to</a></strong> the <strong><a href="https://android.googlesource.com/">Android 173Open Source Project (AOSP) repository</a></strong> to make your changes 174available to everyone else in the Android ecosystem.</p> 175 176<a href="{@docRoot}source/index.html"><img border="0" 177src="images/android_framework_small.png" alt="Android framework summary" 178style="display:inline;float:right;margin:5px 10px;width:42%;height:42%"></a> 179 180<a href="{@docRoot}devices/index.html"><h4>Port Android to Devices</h4></a> 181<p>Get help porting the latest Android platform to create compelling devices for 182your customers. Includes documentation for HAL interfaces and details on core 183technologies such as Android runtime (ART) and over-the-air (OTA) updates.</p> 184 185<a href="{@docRoot}security/index.html"><h4>Make Secure</h4></a> 186<p>Follow these examples and instructions to harden your Android devices against 187malicious attacks. Find out how the Android security program works and learn how 188to implement the latest features.</p> 189 190<a href="{@docRoot}compatibility/index.html"><h4>Get Compatible</h4></a> 191<p>Being Android-compatible lets you offer custom features but still give users 192and developers a consistent and standard experience across all Android-powered 193devices. Android provides guidance and a test suite to verify your Android 194compatibility.</p> 195 196<a href="https://android.googlesource.com/platform/docs/source.android.com/"> 197<h4>Help this Site</h4></a> 198<p>Use the <strong>Site Feedback</strong> button at the bottom of any page to 199request content improvements or let us know about errors. To contribute your 200own updates to the site or to view a complete list of site changes, use the AOSP 201project 202<strong><a href="https://android.googlesource.com/platform/docs/source.android.com/+log/master">docs/source.android.com.</a></strong></p> 203</div> 204 205</div> 206 207</div> 208
