Build.java revision ffcda1086185f217ebfbac0735f92fcc8a9196c8
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 19import com.android.internal.telephony.TelephonyProperties; 20 21/** 22 * Information about the current build, extracted from system properties. 23 */ 24public class Build { 25 /** Value used for when a build property is unknown. */ 26 public static final String UNKNOWN = "unknown"; 27 28 /** Either a changelist number, or a label like "M4-rc20". */ 29 public static final String ID = getString("ro.build.id"); 30 31 /** A build ID string meant for displaying to the user */ 32 public static final String DISPLAY = getString("ro.build.display.id"); 33 34 /** The name of the overall product. */ 35 public static final String PRODUCT = getString("ro.product.name"); 36 37 /** The name of the industrial design. */ 38 public static final String DEVICE = getString("ro.product.device"); 39 40 /** The name of the underlying board, like "goldfish". */ 41 public static final String BOARD = getString("ro.product.board"); 42 43 /** The name of the instruction set (CPU type + ABI convention) of native code. */ 44 public static final String CPU_ABI = getString("ro.product.cpu.abi"); 45 46 /** The name of the second instruction set (CPU type + ABI convention) of native code. */ 47 public static final String CPU_ABI2 = getString("ro.product.cpu.abi2"); 48 49 /** The manufacturer of the product/hardware. */ 50 public static final String MANUFACTURER = getString("ro.product.manufacturer"); 51 52 /** The consumer-visible brand with which the product/hardware will be associated, if any. */ 53 public static final String BRAND = getString("ro.product.brand"); 54 55 /** The end-user-visible name for the end product. */ 56 public static final String MODEL = getString("ro.product.model"); 57 58 /** The system bootloader version number. */ 59 public static final String BOOTLOADER = getString("ro.bootloader"); 60 61 /** 62 * The radio firmware version number. 63 * 64 * @deprecated The radio firmware version is frequently not 65 * available when this class is initialized, leading to a blank or 66 * "unknown" value for this string. Use 67 * {@link #getRadioVersion} instead. 68 */ 69 @Deprecated 70 public static final String RADIO = getString(TelephonyProperties.PROPERTY_BASEBAND_VERSION); 71 72 /** The name of the hardware (from the kernel command line or /proc). */ 73 public static final String HARDWARE = getString("ro.hardware"); 74 75 /** A hardware serial number, if available. Alphanumeric only, case-insensitive. */ 76 public static final String SERIAL = getString("ro.serialno"); 77 78 /** 79 * A list of ABIs (in priority) order supported by this device. 80 * 81 * @hide 82 */ 83 public static final String[] SUPPORTED_ABIS = getString("ro.product.cpu.abilist").split(","); 84 85 /** Various version strings. */ 86 public static class VERSION { 87 /** 88 * The internal value used by the underlying source control to 89 * represent this build. E.g., a perforce changelist number 90 * or a git hash. 91 */ 92 public static final String INCREMENTAL = getString("ro.build.version.incremental"); 93 94 /** 95 * The user-visible version string. E.g., "1.0" or "3.4b5". 96 */ 97 public static final String RELEASE = getString("ro.build.version.release"); 98 99 /** 100 * The user-visible SDK version of the framework in its raw String 101 * representation; use {@link #SDK_INT} instead. 102 * 103 * @deprecated Use {@link #SDK_INT} to easily get this as an integer. 104 */ 105 @Deprecated 106 public static final String SDK = getString("ro.build.version.sdk"); 107 108 /** 109 * The user-visible SDK version of the framework; its possible 110 * values are defined in {@link Build.VERSION_CODES}. 111 */ 112 public static final int SDK_INT = SystemProperties.getInt( 113 "ro.build.version.sdk", 0); 114 115 /** 116 * The current development codename, or the string "REL" if this is 117 * a release build. 118 */ 119 public static final String CODENAME = getString("ro.build.version.codename"); 120 121 private static final String[] ALL_CODENAMES 122 = getString("ro.build.version.all_codenames").split(","); 123 124 /** 125 * @hide 126 */ 127 public static final String[] ACTIVE_CODENAMES = "REL".equals(ALL_CODENAMES[0]) 128 ? new String[0] : ALL_CODENAMES; 129 130 /** 131 * The SDK version to use when accessing resources. 132 * Use the current SDK version code. For every active development codename 133 * we are operating under, we bump the assumed resource platform version by 1. 134 * @hide 135 */ 136 public static final int RESOURCES_SDK_INT = SDK_INT + ACTIVE_CODENAMES.length; 137 } 138 139 /** 140 * Enumeration of the currently known SDK version codes. These are the 141 * values that can be found in {@link VERSION#SDK}. Version numbers 142 * increment monotonically with each official platform release. 143 */ 144 public static class VERSION_CODES { 145 /** 146 * Magic version number for a current development build, which has 147 * not yet turned into an official release. 148 */ 149 public static final int CUR_DEVELOPMENT = 10000; 150 151 /** 152 * October 2008: The original, first, version of Android. Yay! 153 */ 154 public static final int BASE = 1; 155 156 /** 157 * February 2009: First Android update, officially called 1.1. 158 */ 159 public static final int BASE_1_1 = 2; 160 161 /** 162 * May 2009: Android 1.5. 163 */ 164 public static final int CUPCAKE = 3; 165 166 /** 167 * September 2009: Android 1.6. 168 * 169 * <p>Applications targeting this or a later release will get these 170 * new changes in behavior:</p> 171 * <ul> 172 * <li> They must explicitly request the 173 * {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} permission to be 174 * able to modify the contents of the SD card. (Apps targeting 175 * earlier versions will always request the permission.) 176 * <li> They must explicitly request the 177 * {@link android.Manifest.permission#READ_PHONE_STATE} permission to be 178 * able to be able to retrieve phone state info. (Apps targeting 179 * earlier versions will always request the permission.) 180 * <li> They are assumed to support different screen densities and 181 * sizes. (Apps targeting earlier versions are assumed to only support 182 * medium density normal size screens unless otherwise indicated). 183 * They can still explicitly specify screen support either way with the 184 * supports-screens manifest tag. 185 * <li> {@link android.widget.TabHost} will use the new dark tab 186 * background design. 187 * </ul> 188 */ 189 public static final int DONUT = 4; 190 191 /** 192 * November 2009: Android 2.0 193 * 194 * <p>Applications targeting this or a later release will get these 195 * new changes in behavior:</p> 196 * <ul> 197 * <li> The {@link android.app.Service#onStartCommand 198 * Service.onStartCommand} function will return the new 199 * {@link android.app.Service#START_STICKY} behavior instead of the 200 * old compatibility {@link android.app.Service#START_STICKY_COMPATIBILITY}. 201 * <li> The {@link android.app.Activity} class will now execute back 202 * key presses on the key up instead of key down, to be able to detect 203 * canceled presses from virtual keys. 204 * <li> The {@link android.widget.TabWidget} class will use a new color scheme 205 * for tabs. In the new scheme, the foreground tab has a medium gray background 206 * the background tabs have a dark gray background. 207 * </ul> 208 */ 209 public static final int ECLAIR = 5; 210 211 /** 212 * December 2009: Android 2.0.1 213 */ 214 public static final int ECLAIR_0_1 = 6; 215 216 /** 217 * January 2010: Android 2.1 218 */ 219 public static final int ECLAIR_MR1 = 7; 220 221 /** 222 * June 2010: Android 2.2 223 */ 224 public static final int FROYO = 8; 225 226 /** 227 * November 2010: Android 2.3 228 * 229 * <p>Applications targeting this or a later release will get these 230 * new changes in behavior:</p> 231 * <ul> 232 * <li> The application's notification icons will be shown on the new 233 * dark status bar background, so must be visible in this situation. 234 * </ul> 235 */ 236 public static final int GINGERBREAD = 9; 237 238 /** 239 * February 2011: Android 2.3.3. 240 */ 241 public static final int GINGERBREAD_MR1 = 10; 242 243 /** 244 * February 2011: Android 3.0. 245 * 246 * <p>Applications targeting this or a later release will get these 247 * new changes in behavior:</p> 248 * <ul> 249 * <li> The default theme for applications is now dark holographic: 250 * {@link android.R.style#Theme_Holo}. 251 * <li> On large screen devices that do not have a physical menu 252 * button, the soft (compatibility) menu is disabled. 253 * <li> The activity lifecycle has changed slightly as per 254 * {@link android.app.Activity}. 255 * <li> An application will crash if it does not call through 256 * to the super implementation of its 257 * {@link android.app.Activity#onPause Activity.onPause()} method. 258 * <li> When an application requires a permission to access one of 259 * its components (activity, receiver, service, provider), this 260 * permission is no longer enforced when the application wants to 261 * access its own component. This means it can require a permission 262 * on a component that it does not itself hold and still access that 263 * component. 264 * <li> {@link android.content.Context#getSharedPreferences 265 * Context.getSharedPreferences()} will not automatically reload 266 * the preferences if they have changed on storage, unless 267 * {@link android.content.Context#MODE_MULTI_PROCESS} is used. 268 * <li> {@link android.view.ViewGroup#setMotionEventSplittingEnabled} 269 * will default to true. 270 * <li> {@link android.view.WindowManager.LayoutParams#FLAG_SPLIT_TOUCH} 271 * is enabled by default on windows. 272 * <li> {@link android.widget.PopupWindow#isSplitTouchEnabled() 273 * PopupWindow.isSplitTouchEnabled()} will return true by default. 274 * <li> {@link android.widget.GridView} and {@link android.widget.ListView} 275 * will use {@link android.view.View#setActivated View.setActivated} 276 * for selected items if they do not implement {@link android.widget.Checkable}. 277 * <li> {@link android.widget.Scroller} will be constructed with 278 * "flywheel" behavior enabled by default. 279 * </ul> 280 */ 281 public static final int HONEYCOMB = 11; 282 283 /** 284 * May 2011: Android 3.1. 285 */ 286 public static final int HONEYCOMB_MR1 = 12; 287 288 /** 289 * June 2011: Android 3.2. 290 * 291 * <p>Update to Honeycomb MR1 to support 7 inch tablets, improve 292 * screen compatibility mode, etc.</p> 293 * 294 * <p>As of this version, applications that don't say whether they 295 * support XLARGE screens will be assumed to do so only if they target 296 * {@link #HONEYCOMB} or later; it had been {@link #GINGERBREAD} or 297 * later. Applications that don't support a screen size at least as 298 * large as the current screen will provide the user with a UI to 299 * switch them in to screen size compatibility mode.</p> 300 * 301 * <p>This version introduces new screen size resource qualifiers 302 * based on the screen size in dp: see 303 * {@link android.content.res.Configuration#screenWidthDp}, 304 * {@link android.content.res.Configuration#screenHeightDp}, and 305 * {@link android.content.res.Configuration#smallestScreenWidthDp}. 306 * Supplying these in <supports-screens> as per 307 * {@link android.content.pm.ApplicationInfo#requiresSmallestWidthDp}, 308 * {@link android.content.pm.ApplicationInfo#compatibleWidthLimitDp}, and 309 * {@link android.content.pm.ApplicationInfo#largestWidthLimitDp} is 310 * preferred over the older screen size buckets and for older devices 311 * the appropriate buckets will be inferred from them.</p> 312 * 313 * <p>Applications targeting this or a later release will get these 314 * new changes in behavior:</p> 315 * <ul> 316 * <li><p>New {@link android.content.pm.PackageManager#FEATURE_SCREEN_PORTRAIT} 317 * and {@link android.content.pm.PackageManager#FEATURE_SCREEN_LANDSCAPE} 318 * features were introduced in this release. Applications that target 319 * previous platform versions are assumed to require both portrait and 320 * landscape support in the device; when targeting Honeycomb MR1 or 321 * greater the application is responsible for specifying any specific 322 * orientation it requires.</p> 323 * <li><p>{@link android.os.AsyncTask} will use the serial executor 324 * by default when calling {@link android.os.AsyncTask#execute}.</p> 325 * <li><p>{@link android.content.pm.ActivityInfo#configChanges 326 * ActivityInfo.configChanges} will have the 327 * {@link android.content.pm.ActivityInfo#CONFIG_SCREEN_SIZE} and 328 * {@link android.content.pm.ActivityInfo#CONFIG_SMALLEST_SCREEN_SIZE} 329 * bits set; these need to be cleared for older applications because 330 * some developers have done absolute comparisons against this value 331 * instead of correctly masking the bits they are interested in. 332 * </ul> 333 */ 334 public static final int HONEYCOMB_MR2 = 13; 335 336 /** 337 * October 2011: Android 4.0. 338 * 339 * <p>Applications targeting this or a later release will get these 340 * new changes in behavior:</p> 341 * <ul> 342 * <li> For devices without a dedicated menu key, the software compatibility 343 * menu key will not be shown even on phones. By targeting Ice Cream Sandwich 344 * or later, your UI must always have its own menu UI affordance if needed, 345 * on both tablets and phones. The ActionBar will take care of this for you. 346 * <li> 2d drawing hardware acceleration is now turned on by default. 347 * You can use 348 * {@link android.R.attr#hardwareAccelerated android:hardwareAccelerated} 349 * to turn it off if needed, although this is strongly discouraged since 350 * it will result in poor performance on larger screen devices. 351 * <li> The default theme for applications is now the "device default" theme: 352 * {@link android.R.style#Theme_DeviceDefault}. This may be the 353 * holo dark theme or a different dark theme defined by the specific device. 354 * The {@link android.R.style#Theme_Holo} family must not be modified 355 * for a device to be considered compatible. Applications that explicitly 356 * request a theme from the Holo family will be guaranteed that these themes 357 * will not change character within the same platform version. Applications 358 * that wish to blend in with the device should use a theme from the 359 * {@link android.R.style#Theme_DeviceDefault} family. 360 * <li> Managed cursors can now throw an exception if you directly close 361 * the cursor yourself without stopping the management of it; previously failures 362 * would be silently ignored. 363 * <li> The fadingEdge attribute on views will be ignored (fading edges is no 364 * longer a standard part of the UI). A new requiresFadingEdge attribute allows 365 * applications to still force fading edges on for special cases. 366 * <li> {@link android.content.Context#bindService Context.bindService()} 367 * will not automatically add in {@link android.content.Context#BIND_WAIVE_PRIORITY}. 368 * <li> App Widgets will have standard padding automatically added around 369 * them, rather than relying on the padding being baked into the widget itself. 370 * <li> An exception will be thrown if you try to change the type of a 371 * window after it has been added to the window manager. Previously this 372 * would result in random incorrect behavior. 373 * <li> {@link android.view.animation.AnimationSet} will parse out 374 * the duration, fillBefore, fillAfter, repeatMode, and startOffset 375 * XML attributes that are defined. 376 * <li> {@link android.app.ActionBar#setHomeButtonEnabled 377 * ActionBar.setHomeButtonEnabled()} is false by default. 378 * </ul> 379 */ 380 public static final int ICE_CREAM_SANDWICH = 14; 381 382 /** 383 * December 2011: Android 4.0.3. 384 */ 385 public static final int ICE_CREAM_SANDWICH_MR1 = 15; 386 387 /** 388 * June 2012: Android 4.1. 389 * 390 * <p>Applications targeting this or a later release will get these 391 * new changes in behavior:</p> 392 * <ul> 393 * <li> You must explicitly request the {@link android.Manifest.permission#READ_CALL_LOG} 394 * and/or {@link android.Manifest.permission#WRITE_CALL_LOG} permissions; 395 * access to the call log is no longer implicitly provided through 396 * {@link android.Manifest.permission#READ_CONTACTS} and 397 * {@link android.Manifest.permission#WRITE_CONTACTS}. 398 * <li> {@link android.widget.RemoteViews} will throw an exception if 399 * setting an onClick handler for views being generated by a 400 * {@link android.widget.RemoteViewsService} for a collection container; 401 * previously this just resulted in a warning log message. 402 * <li> New {@link android.app.ActionBar} policy for embedded tabs: 403 * embedded tabs are now always stacked in the action bar when in portrait 404 * mode, regardless of the size of the screen. 405 * <li> {@link android.webkit.WebSettings#setAllowFileAccessFromFileURLs(boolean) 406 * WebSettings.setAllowFileAccessFromFileURLs} and 407 * {@link android.webkit.WebSettings#setAllowUniversalAccessFromFileURLs(boolean) 408 * WebSettings.setAllowUniversalAccessFromFileURLs} default to false. 409 * <li> Calls to {@link android.content.pm.PackageManager#setComponentEnabledSetting 410 * PackageManager.setComponentEnabledSetting} will now throw an 411 * IllegalArgumentException if the given component class name does not 412 * exist in the application's manifest. 413 * <li> {@link android.nfc.NfcAdapter#setNdefPushMessage 414 * NfcAdapter.setNdefPushMessage}, 415 * {@link android.nfc.NfcAdapter#setNdefPushMessageCallback 416 * NfcAdapter.setNdefPushMessageCallback} and 417 * {@link android.nfc.NfcAdapter#setOnNdefPushCompleteCallback 418 * NfcAdapter.setOnNdefPushCompleteCallback} will throw 419 * IllegalStateException if called after the Activity has been destroyed. 420 * <li> Accessibility services must require the new 421 * {@link android.Manifest.permission#BIND_ACCESSIBILITY_SERVICE} permission or 422 * they will not be available for use. 423 * <li> {@link android.accessibilityservice.AccessibilityServiceInfo#FLAG_INCLUDE_NOT_IMPORTANT_VIEWS 424 * AccessibilityServiceInfo.FLAG_INCLUDE_NOT_IMPORTANT_VIEWS} must be set 425 * for unimportant views to be included in queries. 426 * </ul> 427 */ 428 public static final int JELLY_BEAN = 16; 429 430 /** 431 * Android 4.2: Moar jelly beans! 432 * 433 * <p>Applications targeting this or a later release will get these 434 * new changes in behavior:</p> 435 * <ul> 436 * <li>Content Providers: The default value of {@code android:exported} is now 437 * {@code false}. See 438 * <a href="{@docRoot}guide/topics/manifest/provider-element.html#exported"> 439 * the android:exported section</a> in the provider documentation for more details.</li> 440 * <li>{@link android.view.View#getLayoutDirection() View.getLayoutDirection()} 441 * can return different values than {@link android.view.View#LAYOUT_DIRECTION_LTR} 442 * based on the locale etc. 443 * <li> {@link android.webkit.WebView#addJavascriptInterface(Object, String) 444 * WebView.addJavascriptInterface} requires explicit annotations on methods 445 * for them to be accessible from Javascript. 446 * </ul> 447 */ 448 public static final int JELLY_BEAN_MR1 = 17; 449 450 /** 451 * Android 4.3: Jelly Bean MR2, the revenge of the beans. 452 */ 453 public static final int JELLY_BEAN_MR2 = 18; 454 455 /** 456 * Android 4.4: KitKat, another tasty treat. 457 * 458 * <p>Applications targeting this or a later release will get these 459 * new changes in behavior:</p> 460 * <ul> 461 * <li> The default result of {android.preference.PreferenceActivity#isValidFragment 462 * PreferenceActivity.isValueFragment} becomes false instead of true.</li> 463 * <li> In {@link android.webkit.WebView}, apps targeting earlier versions will have 464 * JS URLs evaluated directly and any result of the evaluation will not replace 465 * the current page content. Apps targetting KITKAT or later that load a JS URL will 466 * have the result of that URL replace the content of the current page</li> 467 * <li> {@link android.app.AlarmManager#set AlarmManager.set} becomes interpreted as 468 * an inexact value, to give the system more flexibility in scheduling alarms.</li> 469 * <li> {@link android.content.Context#getSharedPreferences(String, int) 470 * Context.getSharedPreferences} no longer allows a null name.</li> 471 * <li> {@link android.widget.RelativeLayout} changes to compute wrapped content 472 * margins correctly.</li> 473 * <li> {@link android.app.ActionBar}'s window content overlay is allowed to be 474 * drawn.</li> 475 * <li>The {@link android.Manifest.permission#READ_EXTERNAL_STORAGE} 476 * permission is now always enforced.</li> 477 * <li>Access to package-specific external storage directories belonging 478 * to the calling app no longer requires the 479 * {@link android.Manifest.permission#READ_EXTERNAL_STORAGE} or 480 * {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} 481 * permissions.</li> 482 * </ul> 483 */ 484 public static final int KITKAT = 19; 485 486 /** 487 * Android 4.5: KitKat for watches, snacks on the run. 488 */ 489 public static final int KITKAT_WATCH = CUR_DEVELOPMENT; // STOPSHIP: update API level 490 491 /** 492 * L! 493 * 494 * <p>Applications targeting this or a later release will get these 495 * new changes in behavior:</p> 496 * <ul> 497 * <li> {@link android.content.Context#bindService Context.bindService} now 498 * requires an explicit Intent, and will throw an exception if given an implicit 499 * Intent.</li> 500 * </ul> 501 */ 502 public static final int L = CUR_DEVELOPMENT; 503 } 504 505 /** The type of build, like "user" or "eng". */ 506 public static final String TYPE = getString("ro.build.type"); 507 508 /** Comma-separated tags describing the build, like "unsigned,debug". */ 509 public static final String TAGS = getString("ro.build.tags"); 510 511 /** A string that uniquely identifies this build. Do not attempt to parse this value. */ 512 public static final String FINGERPRINT = getString("ro.build.fingerprint"); 513 514 // The following properties only make sense for internal engineering builds. 515 public static final long TIME = getLong("ro.build.date.utc") * 1000; 516 public static final String USER = getString("ro.build.user"); 517 public static final String HOST = getString("ro.build.host"); 518 519 /** 520 * Returns true if we are running a debug build such as "user-debug" or "eng". 521 * @hide 522 */ 523 public static final boolean IS_DEBUGGABLE = 524 SystemProperties.getInt("ro.debuggable", 0) == 1; 525 526 /** 527 * Returns the version string for the radio firmware. May return 528 * null (if, for instance, the radio is not currently on). 529 */ 530 public static String getRadioVersion() { 531 return SystemProperties.get(TelephonyProperties.PROPERTY_BASEBAND_VERSION, null); 532 } 533 534 private static String getString(String property) { 535 return SystemProperties.get(property, UNKNOWN); 536 } 537 538 private static long getLong(String property) { 539 try { 540 return Long.parseLong(SystemProperties.get(property)); 541 } catch (NumberFormatException e) { 542 return -1; 543 } 544 } 545} 546