Build.java revision f6f9f2d0256930ce0bb4913b2260b8480914edc2
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 public static final String SDK = getString("ro.build.version.sdk"); 74 75 /** 76 * The user-visible SDK version of the framework; its possible 77 * values are defined in {@link Build.VERSION_CODES}. 78 */ 79 public static final int SDK_INT = SystemProperties.getInt( 80 "ro.build.version.sdk", 0); 81 82 /** 83 * The current development codename, or the string "REL" if this is 84 * a release build. 85 */ 86 public static final String CODENAME = getString("ro.build.version.codename"); 87 } 88 89 /** 90 * Enumeration of the currently known SDK version codes. These are the 91 * values that can be found in {@link VERSION#SDK}. Version numbers 92 * increment monotonically with each official platform release. 93 */ 94 public static class VERSION_CODES { 95 /** 96 * Magic version number for a current development build, which has 97 * not yet turned into an official release. 98 */ 99 public static final int CUR_DEVELOPMENT = 10000; 100 101 /** 102 * October 2008: The original, first, version of Android. Yay! 103 */ 104 public static final int BASE = 1; 105 /** 106 * February 2009: First Android update, officially called 1.1. 107 */ 108 public static final int BASE_1_1 = 2; 109 /** 110 * May 2009: Android 1.5. 111 */ 112 public static final int CUPCAKE = 3; 113 /** 114 * Current work on "Donut" development branch. 115 * 116 * <p>Applications targeting this or a later release will get these 117 * new changes in behavior:</p> 118 * <ul> 119 * <li> They must explicitly request the 120 * {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} permission to be 121 * able to modify the contents of the SD card. (Apps targeting 122 * earlier versions will always request the permission.) 123 * <li> They must explicitly request the 124 * {@link android.Manifest.permission#READ_PHONE_STATE} permission to be 125 * able to be able to retrieve phone state info. (Apps targeting 126 * earlier versions will always request the permission.) 127 * <li> They are assumed to support different screen densities and 128 * sizes. (Apps targeting earlier versions are assumed to only support 129 * medium density normal size screens unless otherwise indicated). 130 * They can still explicitly specify screen support either way with the 131 * supports-screens manifest tag. 132 * </ul> 133 */ 134 public static final int DONUT = 4; 135 /** 136 * Current work on "Eclair" development branch. 137 * 138 * <p>Applications targeting this or a later release will get these 139 * new changes in behavior:</p> 140 * <ul> 141 * <li> The {@link android.app.Service#onStartCommand 142 * Service.onStartCommand} function will return the new 143 * {@link android.app.Service#START_STICKY} behavior instead of the 144 * old compatibility {@link android.app.Service#START_STICKY_COMPATIBILITY}. 145 * </ul> 146 */ 147 public static final int ECLAIR = CUR_DEVELOPMENT; 148 } 149 150 /** The type of build, like "user" or "eng". */ 151 public static final String TYPE = getString("ro.build.type"); 152 153 /** Comma-separated tags describing the build, like "unsigned,debug". */ 154 public static final String TAGS = getString("ro.build.tags"); 155 156 /** A string that uniquely identifies this build. Do not attempt to parse this value. */ 157 public static final String FINGERPRINT = getString("ro.build.fingerprint"); 158 159 // The following properties only make sense for internal engineering builds. 160 public static final long TIME = getLong("ro.build.date.utc") * 1000; 161 public static final String USER = getString("ro.build.user"); 162 public static final String HOST = getString("ro.build.host"); 163 164 private static String getString(String property) { 165 return SystemProperties.get(property, UNKNOWN); 166 } 167 168 private static long getLong(String property) { 169 try { 170 return Long.parseLong(SystemProperties.get(property)); 171 } catch (NumberFormatException e) { 172 return -1; 173 } 174 } 175} 176