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Robert Ly35f2fda2013-01-29 16:27:05 -08001fullpage=true
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Robert Ly35f2fda2013-01-29 16:27:05 -080010
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12 you may not use this file except in compliance with the License.
13 You may obtain a copy of the License at
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15 http://www.apache.org/licenses/LICENSE-2.0
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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>
Robert Ly5b218c22013-05-07 10:37:22 -070027
Clay Murphyfa783d82015-05-01 14:26:20 -070028<p>
29Android is an open source software stack for a wide range of mobile devices and
30a corresponding open source project led by Google. This site offers the
31information and source code you need to create custom variants of the Android
32stack, port devices and accessories to the Android platform, and ensure your
33devices meet compatibility requirements.
34</p>
Robert Ly35f2fda2013-01-29 16:27:05 -080035
36 </div>
37
38</div>
39
Robert Ly35f2fda2013-01-29 16:27:05 -080040<div class="wrap">
41
42 <div class="landing-docs">
43 <div class="col-8">
Clay Murphya336f062014-05-08 13:33:23 -070044 <h3>What's New</h3>
Clay Murphy46b38622015-04-30 12:48:48 -070045<a href="{@docRoot}devices/halref/index.html">
46 <h4>Hardware Abstraction Layer References</h4></a>
47 <p>The <strong><a href="{@docRoot}devices/halref/index.html">Hardware
48 Abstraction Layer (HAL) reference files</a></strong> have been updated to
49 reflect the latest development, such as the introduction of
50 <code>AUDIO_PARAMETER_DEVICE_CONNECT</code> to <strong><a
51 href="{@docRoot}devices/halref/audio_8h_source.html">audio.h</a></strong>.</p>
52
Clay Murphy009dadd2015-04-21 12:09:35 -070053<a href="{@docRoot}devices/tech/debug/dumpsys.html">
54 <h4>Example Dumpsys Diagnostic Output</h4></a>
55 <p>In addition to the aforementioned <strong><a
56 href="{@docRoot}devices/input/diagnostics.html">Input
57 Diagnostics</a></strong>, you can now find Dumpsys examples of usage
58 data for <strong><a href="{@docRoot}devices/tech/ram/procstats.html">RAM
59 (procstats)</a></strong>, <strong><a
60 href="{@docRoot}devices/tech/netstats.html">network (netstats)</a></strong>,
61 and <strong><a
62 href="{@docRoot}devices/tech/power/batterystats.html">battery (batterystats)</a></strong>.</p>
63
64<a href="{@docRoot}devices/audio/latency_measurements.html">
65 <h4>Audio Latency Measurements</h4></a>
66 <p>The Android audio team has published <strong><a
67 href="{@docRoot}devices/audio/latency_measurements.html">round-trip audio latency
68 measurements</a></strong> for select Nexus devices to help partners compare their
69 own devices and reduce latency further.</p>
70
71<a href="{@docRoot}devices/tech/power/index.html">
72 <h4>Power Profile Details</h4></a>
73 <p><strong><a
74 href="{@docRoot}devices/tech/power/index.html">Power</a></strong>
75 information has been moved and expanded to include details on
76 <code>cpu.awake</code> and <code>cpu.active</code>. The need to create a
77 <code>power_profile.xml</code> file is also emphasized throughout.</p>
78
Clay Murphy759ebd82015-04-07 14:57:27 -070079<a href="{@docRoot}source/initializing.html">
80 <h4>Initializing Improvements</h4></a>
81 <p>Build environment <strong><a
82 href="{@docRoot}source/initializing.html#setting-up-a-mac-os-x-build-environment">Initializing</a></strong>
83 instructions now explain how to resize and unmount Mac OS sparse
84 images. And the ccache section has been moved to an optional <strong><a
85 href="{@docRoot}source/initializing.html#optimizing-a-build-environment">Optimizing
86 a build environment</a></strong> section.</p>
87
88<a href="{@docRoot}devices/tech/security/selinux/index.html">
89 <h4>SELinux Permissive Declarations</h4></a>
90 <p>SELinux <strong><a
91 href="{@docRoot}devices/tech/security/selinux/customize.html">Customizing</a></strong>
92 and <strong><a
93 href="{@docRoot}devices/tech/security/selinux/implement.html">Implementing</a></strong>
94 instructions have been updated to recommend using permissive declarations
95 directly as <code>permissive_or_unconfined()</code> has been deprecated.
96 Similarly, <code>BOARD_SEPOLICY_UNION</code> has been removed, so
97 <code>BOARD_SEPOLICY_*</code> variables are suggested insead.</p>
Robert Ly35f2fda2013-01-29 16:27:05 -080098 </div>
99
100 <div class="col-8">
101 <h3>Getting Started</h3>
102 <a href="{@docRoot}source/index.html">
Clay Murphy78beecd2013-11-05 16:27:26 -0800103 <h4>Explore the Source</h4></a>
Robert Ly35f2fda2013-01-29 16:27:05 -0800104 <p>Get the complete Android platform and modify and build it to suit your needs. You can
Clay Murphy5a7dc7e2014-09-30 14:55:13 -0700105 also <strong><a
106 href="https://android-review.googlesource.com/#/q/status:open">contribute
107 to</a></strong> the <strong><a
Clay Murphyddffdfc2015-03-02 13:30:18 -0800108 href="https://android.googlesource.com/">Android Open Source Project (AOSP)
Clay Murphy5a7dc7e2014-09-30 14:55:13 -0700109 repository</a></strong> to make your changes available to everyone else
110 in the Android ecosystem.</p>
Clay Murphy4aa22e82014-12-16 11:21:22 -0800111<a href="{@docRoot}source/index.html"><img border="0" src="images/android_framework_small.png" alt="Android framework summary" style="display:inline;float:left;margin:5px 10px"></a>
Robert Ly35f2fda2013-01-29 16:27:05 -0800112 <a href="{@docRoot}devices/index.html">
Clay Murphy78beecd2013-11-05 16:27:26 -0800113 <h4>Port Android to Devices</h4></a>
Clay Murphy3fe59ee2013-07-09 10:31:04 -0700114 <p>Port the latest Android platform and
Robert Ly5b218c22013-05-07 10:37:22 -0700115 create compelling devices that your customers want.</p>
Robert Ly35f2fda2013-01-29 16:27:05 -0800116
117 <a href="{@docRoot}accessories/index.html">
Clay Murphy78beecd2013-11-05 16:27:26 -0800118 <h4>Build Accessories</h4></a>
Robert Ly5b218c22013-05-07 10:37:22 -0700119 <p>Sometimes, a device can't do it all. Tap into Android's open accessory standard and build accessories to complement the wide variety of Android-powered devices.</p>
Robert Ly35f2fda2013-01-29 16:27:05 -0800120
121 <a href="{@docRoot}compatibility/index.html">
Clay Murphy78beecd2013-11-05 16:27:26 -0800122 <h4>Get Compatible</h4></a>
Robert Ly35f2fda2013-01-29 16:27:05 -0800123 <p>Being Android-compatible lets you offer custom features but still give users and developers a consistent
124 and standard experience across all Android-powered devices. Android provides guidance
125 and a test suite to verify your Android compatibility.</p>
Clay Murphyddffdfc2015-03-02 13:30:18 -0800126
127 <a href="https://android.googlesource.com/platform/docs/source.android.com/">
128 <h4>Help this Site</h4></a>
129 <p>Please note, source.android.com is maintained in the Android Open Source Project. See the <strong><a
130 href="https://android.googlesource.com/platform/docs/source.android.com/+log/master">docs/source.android.com
131 project log in AOSP</a></strong> for the complete list of changes to this site.
132 Contribute your own updates to that same project and help maintain source.android.com.</p>
Robert Ly35f2fda2013-01-29 16:27:05 -0800133 </div>
134
135 </div>
136
Clay Murphyf965cd72013-05-30 14:43:56 -0700137</div>