Build.java revision 74885efc8ce6d315e0593e5f669cc805e264cf68
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 /** 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