Build.java revision fa9cafa074eb5d98b49b63795cd947877df1f21d 
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    private 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    /** Various version strings. */
57    public static class VERSION {
58        /**
59         * The internal value used by the underlying source control to
60         * represent this build.  E.g., a perforce changelist number
61         * or a git hash.
62         */
63        public static final String INCREMENTAL = getString("ro.build.version.incremental");
64
65        /**
66         * The user-visible version string.  E.g., "1.0" or "3.4b5".
67         */
68        public static final String RELEASE = getString("ro.build.version.release");
69
70        /**
71         * The user-visible SDK version of the framework in its raw String
72         * representation; use {@link #SDK_INT} instead.
73         *
74         * @deprecated Use {@link #SDK_INT} to easily get this as an integer.
75         */
76        @Deprecated
77        public static final String SDK = getString("ro.build.version.sdk");
78
79        /**
80         * The user-visible SDK version of the framework; its possible
81         * values are defined in {@link Build.VERSION_CODES}.
82         */
83        public static final int SDK_INT = SystemProperties.getInt(
84                "ro.build.version.sdk", 0);
85
86        /**
87         * The current development codename, or the string "REL" if this is
88         * a release build.
89         */
90        public static final String CODENAME = getString("ro.build.version.codename");
91    }
92
93    /**
94     * Enumeration of the currently known SDK version codes.  These are the
95     * values that can be found in {@link VERSION#SDK}.  Version numbers
96     * increment monotonically with each official platform release.
97     */
98    public static class VERSION_CODES {
99        /**
100         * Magic version number for a current development build, which has
101         * not yet turned into an official release.
102         */
103        public static final int CUR_DEVELOPMENT = 10000;
104
105        /**
106         * October 2008: The original, first, version of Android.  Yay!
107         */
108        public static final int BASE = 1;
109
110        /**
111         * February 2009: First Android update, officially called 1.1.
112         */
113        public static final int BASE_1_1 = 2;
114
115        /**
116         * May 2009: Android 1.5.
117         */
118        public static final int CUPCAKE = 3;
119
120        /**
121         * September 2009: Android 1.6.
122         *
123         * <p>Applications targeting this or a later release will get these
124         * new changes in behavior:</p>
125         * <ul>
126         * <li> They must explicitly request the
127         * {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} permission to be
128         * able to modify the contents of the SD card.  (Apps targeting
129         * earlier versions will always request the permission.)
130         * <li> They must explicitly request the
131         * {@link android.Manifest.permission#READ_PHONE_STATE} permission to be
132         * able to be able to retrieve phone state info.  (Apps targeting
133         * earlier versions will always request the permission.)
134         * <li> They are assumed to support different screen densities and
135         * sizes.  (Apps targeting earlier versions are assumed to only support
136         * medium density normal size screens unless otherwise indicated).
137         * They can still explicitly specify screen support either way with the
138         * supports-screens manifest tag.
139         * </ul>
140         */
141        public static final int DONUT = 4;
142
143        /**
144         * November 2009: Android 2.0
145         *
146         * <p>Applications targeting this or a later release will get these
147         * new changes in behavior:</p>
148         * <ul>
149         * <li> The {@link android.app.Service#onStartCommand
150         * Service.onStartCommand} function will return the new
151         * {@link android.app.Service#START_STICKY} behavior instead of the
152         * old compatibility {@link android.app.Service#START_STICKY_COMPATIBILITY}.
153         * <li> The {@link android.app.Activity} class will now execute back
154         * key presses on the key up instead of key down, to be able to detect
155         * canceled presses from virtual keys.
156         * <li> The {@link android.widget.TabWidget} class will use a new color scheme
157         * for tabs. In the new scheme, the foreground tab has a medium gray background
158         * the background tabs have a dark gray background.
159         * </ul>
160         */
161        public static final int ECLAIR = 5;
162
163        /**
164         * December 2009: Android 2.0.1
165         */
166        public static final int ECLAIR_0_1 = 6;
167
168        /**
169         * January 2010: Android 2.1
170         */
171        public static final int ECLAIR_MR1 = 7;
172    }
173
174    /** The type of build, like "user" or "eng". */
175    public static final String TYPE = getString("ro.build.type");
176
177    /** Comma-separated tags describing the build, like "unsigned,debug". */
178    public static final String TAGS = getString("ro.build.tags");
179
180    /** A string that uniquely identifies this build.  Do not attempt to parse this value. */
181    public static final String FINGERPRINT = getString("ro.build.fingerprint");
182
183    // The following properties only make sense for internal engineering builds.
184    public static final long TIME = getLong("ro.build.date.utc") * 1000;
185    public static final String USER = getString("ro.build.user");
186    public static final String HOST = getString("ro.build.host");
187
188    private static String getString(String property) {
189        return SystemProperties.get(property, UNKNOWN);
190    }
191
192    private static long getLong(String property) {
193        try {
194            return Long.parseLong(SystemProperties.get(property));
195        } catch (NumberFormatException e) {
196            return -1;
197        }
198    }
199}
200