Build.java revision e6634981f12e1d218eaf61c6488af3d8c9f0d202 
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
17package android.os;
18
19/**
20 * Information about the current build, extracted from system properties.
21 */
22public class Build {
23    /** Value used for when a build property is unknown. */
24    public static final String UNKNOWN = "unknown";
25
26    /** Either a changelist number, or a label like "M4-rc20". */
27    public static final String ID = getString("ro.build.id");
28
29    /** A build ID string meant for displaying to the user */
30    public static final String DISPLAY = getString("ro.build.display.id");
31
32    /** The name of the overall product. */
33    public static final String PRODUCT = getString("ro.product.name");
34
35    /** The name of the industrial design. */
36    public static final String DEVICE = getString("ro.product.device");
37
38    /** The name of the underlying board, like "goldfish". */
39    public static final String BOARD = getString("ro.product.board");
40
41    /** The name of the instruction set (CPU type + ABI convention) of native code. */
42    public static final String CPU_ABI = getString("ro.product.cpu.abi");
43
44    /** The name of the second instruction set (CPU type + ABI convention) of native code. */
45    public static final String CPU_ABI2 = getString("ro.product.cpu.abi2");
46
47    /** The manufacturer of the product/hardware. */
48    public static final String MANUFACTURER = getString("ro.product.manufacturer");
49
50    /** The brand (e.g., carrier) the software is customized for, if any. */
51    public static final String BRAND = getString("ro.product.brand");
52
53    /** The end-user-visible name for the end product. */
54    public static final String MODEL = getString("ro.product.model");
55
56    /** The system bootloader version number. */
57    public static final String BOOTLOADER = getString("ro.bootloader");
58
59    /** The radio firmware version number. */
60    public static final String RADIO = getString("gsm.version.baseband");
61
62    /** The name of the hardware (from the kernel command line or /proc). */
63    public static final String HARDWARE = getString("ro.hardware");
64
65    /** A hardware serial number, if available.  Alphanumeric only, case-insensitive. */
66    public static final String SERIAL = getString("ro.serialno");
67
68    /** Various version strings. */
69    public static class VERSION {
70        /**
71         * The internal value used by the underlying source control to
72         * represent this build.  E.g., a perforce changelist number
73         * or a git hash.
74         */
75        public static final String INCREMENTAL = getString("ro.build.version.incremental");
76
77        /**
78         * The user-visible version string.  E.g., "1.0" or "3.4b5".
79         */
80        public static final String RELEASE = getString("ro.build.version.release");
81
82        /**
83         * The user-visible SDK version of the framework in its raw String
84         * representation; use {@link #SDK_INT} instead.
85         *
86         * @deprecated Use {@link #SDK_INT} to easily get this as an integer.
87         */
88        @Deprecated
89        public static final String SDK = getString("ro.build.version.sdk");
90
91        /**
92         * The user-visible SDK version of the framework; its possible
93         * values are defined in {@link Build.VERSION_CODES}.
94         */
95        public static final int SDK_INT = SystemProperties.getInt(
96                "ro.build.version.sdk", 0);
97
98        /**
99         * The current development codename, or the string "REL" if this is
100         * a release build.
101         */
102        public static final String CODENAME = getString("ro.build.version.codename");
103    }
104
105    /**
106     * Enumeration of the currently known SDK version codes.  These are the
107     * values that can be found in {@link VERSION#SDK}.  Version numbers
108     * increment monotonically with each official platform release.
109     */
110    public static class VERSION_CODES {
111        /**
112         * Magic version number for a current development build, which has
113         * not yet turned into an official release.
114         */
115        public static final int CUR_DEVELOPMENT = 10000;
116
117        /**
118         * October 2008: The original, first, version of Android.  Yay!
119         */
120        public static final int BASE = 1;
121
122        /**
123         * February 2009: First Android update, officially called 1.1.
124         */
125        public static final int BASE_1_1 = 2;
126
127        /**
128         * May 2009: Android 1.5.
129         */
130        public static final int CUPCAKE = 3;
131
132        /**
133         * September 2009: Android 1.6.
134         *
135         * <p>Applications targeting this or a later release will get these
136         * new changes in behavior:</p>
137         * <ul>
138         * <li> They must explicitly request the
139         * {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} permission to be
140         * able to modify the contents of the SD card.  (Apps targeting
141         * earlier versions will always request the permission.)
142         * <li> They must explicitly request the
143         * {@link android.Manifest.permission#READ_PHONE_STATE} permission to be
144         * able to be able to retrieve phone state info.  (Apps targeting
145         * earlier versions will always request the permission.)
146         * <li> They are assumed to support different screen densities and
147         * sizes.  (Apps targeting earlier versions are assumed to only support
148         * medium density normal size screens unless otherwise indicated).
149         * They can still explicitly specify screen support either way with the
150         * supports-screens manifest tag.
151         * </ul>
152         */
153        public static final int DONUT = 4;
154
155        /**
156         * November 2009: Android 2.0
157         *
158         * <p>Applications targeting this or a later release will get these
159         * new changes in behavior:</p>
160         * <ul>
161         * <li> The {@link android.app.Service#onStartCommand
162         * Service.onStartCommand} function will return the new
163         * {@link android.app.Service#START_STICKY} behavior instead of the
164         * old compatibility {@link android.app.Service#START_STICKY_COMPATIBILITY}.
165         * <li> The {@link android.app.Activity} class will now execute back
166         * key presses on the key up instead of key down, to be able to detect
167         * canceled presses from virtual keys.
168         * <li> The {@link android.widget.TabWidget} class will use a new color scheme
169         * for tabs. In the new scheme, the foreground tab has a medium gray background
170         * the background tabs have a dark gray background.
171         * </ul>
172         */
173        public static final int ECLAIR = 5;
174
175        /**
176         * December 2009: Android 2.0.1
177         */
178        public static final int ECLAIR_0_1 = 6;
179
180        /**
181         * January 2010: Android 2.1
182         */
183        public static final int ECLAIR_MR1 = 7;
184
185        /**
186         * June 2010: Android 2.2
187         */
188        public static final int FROYO = 8;
189
190        /**
191         * Newest version of Android, version 2.3.
192         */
193        public static final int GINGERBREAD = 9;
194
195        /**
196         * Next next version of Android.
197         *
198         * <p>Applications targeting this or a later release will get these
199         * new changes in behavior:</p>
200         * <ul>
201         * <li> The default theme for applications is now dark holographic:
202         *      {@link android.R.style#Theme_Holo}.
203         * </ul>
204         */
205        public static final int HONEYCOMB = CUR_DEVELOPMENT;
206    }
207
208    /** The type of build, like "user" or "eng". */
209    public static final String TYPE = getString("ro.build.type");
210
211    /** Comma-separated tags describing the build, like "unsigned,debug". */
212    public static final String TAGS = getString("ro.build.tags");
213
214    /** A string that uniquely identifies this build.  Do not attempt to parse this value. */
215    public static final String FINGERPRINT = getString("ro.build.fingerprint");
216
217    // The following properties only make sense for internal engineering builds.
218    public static final long TIME = getLong("ro.build.date.utc") * 1000;
219    public static final String USER = getString("ro.build.user");
220    public static final String HOST = getString("ro.build.host");
221
222    private static String getString(String property) {
223        return SystemProperties.get(property, UNKNOWN);
224    }
225
226    private static long getLong(String property) {
227        try {
228            return Long.parseLong(SystemProperties.get(property));
229        } catch (NumberFormatException e) {
230            return -1;
231        }
232    }
233}
234