Build.java revision 6dc3f4e553d333b9f115a222a9a684bb2aa55b5e
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 manufacturer of the product/hardware. */ 45 public static final String MANUFACTURER = getString("ro.product.manufacturer"); 46 47 /** The brand (e.g., carrier) the software is customized for, if any. */ 48 public static final String BRAND = getString("ro.product.brand"); 49 50 /** The end-user-visible name for the end product. */ 51 public static final String MODEL = getString("ro.product.model"); 52 53 /** Various version strings. */ 54 public static class VERSION { 55 /** 56 * The internal value used by the underlying source control to 57 * represent this build. E.g., a perforce changelist number 58 * or a git hash. 59 */ 60 public static final String INCREMENTAL = getString("ro.build.version.incremental"); 61 62 /** 63 * The user-visible version string. E.g., "1.0" or "3.4b5". 64 */ 65 public static final String RELEASE = getString("ro.build.version.release"); 66 67 /** 68 * The user-visible SDK version of the framework in its raw String 69 * representation; use {@link #SDK_INT} instead. 70 * 71 * @deprecated Use {@link #SDK_INT} to easily get this as an integer. 72 */ 73 @Deprecated 74 public static final String SDK = getString("ro.build.version.sdk"); 75 76 /** 77 * The user-visible SDK version of the framework; its possible 78 * values are defined in {@link Build.VERSION_CODES}. 79 */ 80 public static final int SDK_INT = SystemProperties.getInt( 81 "ro.build.version.sdk", 0); 82 83 /** 84 * The current development codename, or the string "REL" if this is 85 * a release build. 86 */ 87 public static final String CODENAME = getString("ro.build.version.codename"); 88 } 89 90 /** 91 * Enumeration of the currently known SDK version codes. These are the 92 * values that can be found in {@link VERSION#SDK}. Version numbers 93 * increment monotonically with each official platform release. 94 */ 95 public static class VERSION_CODES { 96 /** 97 * Magic version number for a current development build, which has 98 * not yet turned into an official release. 99 */ 100 public static final int CUR_DEVELOPMENT = 10000; 101 102 /** 103 * October 2008: The original, first, version of Android. Yay! 104 */ 105 public static final int BASE = 1; 106 /** 107 * February 2009: First Android update, officially called 1.1. 108 */ 109 public static final int BASE_1_1 = 2; 110 /** 111 * May 2009: Android 1.5. 112 */ 113 public static final int CUPCAKE = 3; 114 /** 115 * Current work on "Donut" development branch. 116 * 117 * <p>Applications targeting this or a later release will get these 118 * new changes in behavior:</p> 119 * <ul> 120 * <li> They must explicitly request the 121 * {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} permission to be 122 * able to modify the contents of the SD card. (Apps targeting 123 * earlier versions will always request the permission.) 124 * <li> They must explicitly request the 125 * {@link android.Manifest.permission#READ_PHONE_STATE} permission to be 126 * able to be able to retrieve phone state info. (Apps targeting 127 * earlier versions will always request the permission.) 128 * <li> They are assumed to support different screen densities and 129 * sizes. (Apps targeting earlier versions are assumed to only support 130 * medium density normal size screens unless otherwise indicated). 131 * They can still explicitly specify screen support either way with the 132 * supports-screens manifest tag. 133 * </ul> 134 */ 135 public static final int DONUT = 4; 136 /** 137 * Current work on "Eclair" development branch. 138 * 139 * <p>Applications targeting this or a later release will get these 140 * new changes in behavior:</p> 141 * <ul> 142 * <li> The {@link android.app.Service#onStartCommand 143 * Service.onStartCommand} function will return the new 144 * {@link android.app.Service#START_STICKY} behavior instead of the 145 * old compatibility {@link android.app.Service#START_STICKY_COMPATIBILITY}. 146 * <li> The {@link android.app.Activity} class will now execute back 147 * key presses on the key up instead of key down, to be able to detect 148 * canceled presses from virtual keys. 149 * <li> The {@link android.widget.TabWidget} class will use a new color scheme 150 * for tabs. In the new scheme, the foreground tab has a medium gray background 151 * the background tabs have a dark gray background. 152 * </ul> 153 */ 154 public static final int ECLAIR = 5; 155 } 156 157 /** The type of build, like "user" or "eng". */ 158 public static final String TYPE = getString("ro.build.type"); 159 160 /** Comma-separated tags describing the build, like "unsigned,debug". */ 161 public static final String TAGS = getString("ro.build.tags"); 162 163 /** A string that uniquely identifies this build. Do not attempt to parse this value. */ 164 public static final String FINGERPRINT = getString("ro.build.fingerprint"); 165 166 // The following properties only make sense for internal engineering builds. 167 public static final long TIME = getLong("ro.build.date.utc") * 1000; 168 public static final String USER = getString("ro.build.user"); 169 public static final String HOST = getString("ro.build.host"); 170 171 private static String getString(String property) { 172 return SystemProperties.get(property, UNKNOWN); 173 } 174 175 private static long getLong(String property) { 176 try { 177 return Long.parseLong(SystemProperties.get(property)); 178 } catch (NumberFormatException e) { 179 return -1; 180 } 181 } 182} 183