Build.java revision 216bccf804db9c972b317620a27de6a8adf7fbfe 
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    /** @pending The system bootloader version number. */
57    public static final String BOOTLOADER = getString("ro.bootloader");
58
59    /** @pending The radio firmware version number. */
60    public static final String RADIO = getString("gsm.version.baseband");
61
62    /** @pending The device serial number. */
63    public static final String SERIAL = getString("ro.serialno");
64
65    /** Various version strings. */
66    public static class VERSION {
67        /**
68         * The internal value used by the underlying source control to
69         * represent this build.  E.g., a perforce changelist number
70         * or a git hash.
71         */
72        public static final String INCREMENTAL = getString("ro.build.version.incremental");
73
74        /**
75         * The user-visible version string.  E.g., "1.0" or "3.4b5".
76         */
77        public static final String RELEASE = getString("ro.build.version.release");
78
79        /**
80         * The user-visible SDK version of the framework in its raw String
81         * representation; use {@link #SDK_INT} instead.
82         *
83         * @deprecated Use {@link #SDK_INT} to easily get this as an integer.
84         */
85        @Deprecated
86        public static final String SDK = getString("ro.build.version.sdk");
87
88        /**
89         * The user-visible SDK version of the framework; its possible
90         * values are defined in {@link Build.VERSION_CODES}.
91         */
92        public static final int SDK_INT = SystemProperties.getInt(
93                "ro.build.version.sdk", 0);
94
95        /**
96         * The current development codename, or the string "REL" if this is
97         * a release build.
98         */
99        public static final String CODENAME = getString("ro.build.version.codename");
100    }
101
102    /**
103     * Enumeration of the currently known SDK version codes.  These are the
104     * values that can be found in {@link VERSION#SDK}.  Version numbers
105     * increment monotonically with each official platform release.
106     */
107    public static class VERSION_CODES {
108        /**
109         * Magic version number for a current development build, which has
110         * not yet turned into an official release.
111         */
112        public static final int CUR_DEVELOPMENT = 10000;
113
114        /**
115         * October 2008: The original, first, version of Android.  Yay!
116         */
117        public static final int BASE = 1;
118
119        /**
120         * February 2009: First Android update, officially called 1.1.
121         */
122        public static final int BASE_1_1 = 2;
123
124        /**
125         * May 2009: Android 1.5.
126         */
127        public static final int CUPCAKE = 3;
128
129        /**
130         * September 2009: Android 1.6.
131         *
132         * <p>Applications targeting this or a later release will get these
133         * new changes in behavior:</p>
134         * <ul>
135         * <li> They must explicitly request the
136         * {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} permission to be
137         * able to modify the contents of the SD card.  (Apps targeting
138         * earlier versions will always request the permission.)
139         * <li> They must explicitly request the
140         * {@link android.Manifest.permission#READ_PHONE_STATE} permission to be
141         * able to be able to retrieve phone state info.  (Apps targeting
142         * earlier versions will always request the permission.)
143         * <li> They are assumed to support different screen densities and
144         * sizes.  (Apps targeting earlier versions are assumed to only support
145         * medium density normal size screens unless otherwise indicated).
146         * They can still explicitly specify screen support either way with the
147         * supports-screens manifest tag.
148         * </ul>
149         */
150        public static final int DONUT = 4;
151
152        /**
153         * November 2009: Android 2.0
154         *
155         * <p>Applications targeting this or a later release will get these
156         * new changes in behavior:</p>
157         * <ul>
158         * <li> The {@link android.app.Service#onStartCommand
159         * Service.onStartCommand} function will return the new
160         * {@link android.app.Service#START_STICKY} behavior instead of the
161         * old compatibility {@link android.app.Service#START_STICKY_COMPATIBILITY}.
162         * <li> The {@link android.app.Activity} class will now execute back
163         * key presses on the key up instead of key down, to be able to detect
164         * canceled presses from virtual keys.
165         * <li> The {@link android.widget.TabWidget} class will use a new color scheme
166         * for tabs. In the new scheme, the foreground tab has a medium gray background
167         * the background tabs have a dark gray background.
168         * </ul>
169         */
170        public static final int ECLAIR = 5;
171
172        /**
173         * December 2009: Android 2.0.1
174         */
175        public static final int ECLAIR_0_1 = 6;
176
177        /**
178         * January 2010: Android 2.1
179         */
180        public static final int ECLAIR_MR1 = 7;
181
182        public static final int FROYO = 8;
183    }
184
185    /** The type of build, like "user" or "eng". */
186    public static final String TYPE = getString("ro.build.type");
187
188    /** Comma-separated tags describing the build, like "unsigned,debug". */
189    public static final String TAGS = getString("ro.build.tags");
190
191    /** A string that uniquely identifies this build.  Do not attempt to parse this value. */
192    public static final String FINGERPRINT = getString("ro.build.fingerprint");
193
194    // The following properties only make sense for internal engineering builds.
195    public static final long TIME = getLong("ro.build.date.utc") * 1000;
196    public static final String USER = getString("ro.build.user");
197    public static final String HOST = getString("ro.build.host");
198
199    private static String getString(String property) {
200        return SystemProperties.get(property, UNKNOWN);
201    }
202
203    private static long getLong(String property) {
204        try {
205            return Long.parseLong(SystemProperties.get(property));
206        } catch (NumberFormatException e) {
207            return -1;
208        }
209    }
210}
211