Build.java revision 831e01a89e9636baf15d35e7f8ff5e9f290c8b87
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 android.text.TextUtils; 20import android.util.Slog; 21 22import com.android.internal.telephony.TelephonyProperties; 23 24import dalvik.system.VMRuntime; 25 26import java.util.Objects; 27 28/** 29 * Information about the current build, extracted from system properties. 30 */ 31public class Build { 32 private static final String TAG = "Build"; 33 34 /** Value used for when a build property is unknown. */ 35 public static final String UNKNOWN = "unknown"; 36 37 /** Either a changelist number, or a label like "M4-rc20". */ 38 public static final String ID = getString("ro.build.id"); 39 40 /** A build ID string meant for displaying to the user */ 41 public static final String DISPLAY = getString("ro.build.display.id"); 42 43 /** The name of the overall product. */ 44 public static final String PRODUCT = getString("ro.product.name"); 45 46 /** The name of the industrial design. */ 47 public static final String DEVICE = getString("ro.product.device"); 48 49 /** The name of the underlying board, like "goldfish". */ 50 public static final String BOARD = getString("ro.product.board"); 51 52 /** 53 * The name of the instruction set (CPU type + ABI convention) of native code. 54 * 55 * @deprecated Use {@link #SUPPORTED_ABIS} instead. 56 */ 57 @Deprecated 58 public static final String CPU_ABI; 59 60 /** 61 * The name of the second instruction set (CPU type + ABI convention) of native code. 62 * 63 * @deprecated Use {@link #SUPPORTED_ABIS} instead. 64 */ 65 @Deprecated 66 public static final String CPU_ABI2; 67 68 /** The manufacturer of the product/hardware. */ 69 public static final String MANUFACTURER = getString("ro.product.manufacturer"); 70 71 /** The consumer-visible brand with which the product/hardware will be associated, if any. */ 72 public static final String BRAND = getString("ro.product.brand"); 73 74 /** The end-user-visible name for the end product. */ 75 public static final String MODEL = getString("ro.product.model"); 76 77 /** The system bootloader version number. */ 78 public static final String BOOTLOADER = getString("ro.bootloader"); 79 80 /** 81 * The radio firmware version number. 82 * 83 * @deprecated The radio firmware version is frequently not 84 * available when this class is initialized, leading to a blank or 85 * "unknown" value for this string. Use 86 * {@link #getRadioVersion} instead. 87 */ 88 @Deprecated 89 public static final String RADIO = getString(TelephonyProperties.PROPERTY_BASEBAND_VERSION); 90 91 /** The name of the hardware (from the kernel command line or /proc). */ 92 public static final String HARDWARE = getString("ro.hardware"); 93 94 /** A hardware serial number, if available. Alphanumeric only, case-insensitive. */ 95 public static final String SERIAL = getString("ro.serialno"); 96 97 /** 98 * An ordered list of ABIs supported by this device. The most preferred ABI is the first 99 * element in the list. 100 * 101 * See {@link #SUPPORTED_32_BIT_ABIS} and {@link #SUPPORTED_64_BIT_ABIS}. 102 */ 103 public static final String[] SUPPORTED_ABIS = getStringList("ro.product.cpu.abilist", ","); 104 105 /** 106 * An ordered list of <b>32 bit</b> ABIs supported by this device. The most preferred ABI 107 * is the first element in the list. 108 * 109 * See {@link #SUPPORTED_ABIS} and {@link #SUPPORTED_64_BIT_ABIS}. 110 */ 111 public static final String[] SUPPORTED_32_BIT_ABIS = 112 getStringList("ro.product.cpu.abilist32", ","); 113 114 /** 115 * An ordered list of <b>64 bit</b> ABIs supported by this device. The most preferred ABI 116 * is the first element in the list. 117 * 118 * See {@link #SUPPORTED_ABIS} and {@link #SUPPORTED_32_BIT_ABIS}. 119 */ 120 public static final String[] SUPPORTED_64_BIT_ABIS = 121 getStringList("ro.product.cpu.abilist64", ","); 122 123 124 static { 125 /* 126 * Adjusts CPU_ABI and CPU_ABI2 depending on whether or not a given process is 64 bit. 127 * 32 bit processes will always see 32 bit ABIs in these fields for backward 128 * compatibility. 129 */ 130 final String[] abiList; 131 if (VMRuntime.getRuntime().is64Bit()) { 132 abiList = SUPPORTED_64_BIT_ABIS; 133 } else { 134 abiList = SUPPORTED_32_BIT_ABIS; 135 } 136 137 CPU_ABI = abiList[0]; 138 if (abiList.length > 1) { 139 CPU_ABI2 = abiList[1]; 140 } else { 141 CPU_ABI2 = ""; 142 } 143 } 144 145 /** Various version strings. */ 146 public static class VERSION { 147 /** 148 * The internal value used by the underlying source control to 149 * represent this build. E.g., a perforce changelist number 150 * or a git hash. 151 */ 152 public static final String INCREMENTAL = getString("ro.build.version.incremental"); 153 154 /** 155 * The user-visible version string. E.g., "1.0" or "3.4b5". 156 */ 157 public static final String RELEASE = getString("ro.build.version.release"); 158 159 /** 160 * The user-visible SDK version of the framework in its raw String 161 * representation; use {@link #SDK_INT} instead. 162 * 163 * @deprecated Use {@link #SDK_INT} to easily get this as an integer. 164 */ 165 @Deprecated 166 public static final String SDK = getString("ro.build.version.sdk"); 167 168 /** 169 * The user-visible SDK version of the framework; its possible 170 * values are defined in {@link Build.VERSION_CODES}. 171 */ 172 public static final int SDK_INT = SystemProperties.getInt( 173 "ro.build.version.sdk", 0); 174 175 /** 176 * The developer preview revision of a prerelease SDK. This value will always 177 * be <code>0</code> on production platform builds/devices. 178 * 179 * <p>When this value is nonzero, any new API added since the last 180 * officially published {@link #SDK_INT API level} is only guaranteed to be present 181 * on that specific preview revision. For example, an API <code>Activity.fooBar()</code> 182 * might be present in preview revision 1 but renamed or removed entirely in 183 * preview revision 2, which may cause an app attempting to call it to crash 184 * at runtime.</p> 185 * 186 * <p>Experimental apps targeting preview APIs should check this value for 187 * equality (<code>==</code>) with the preview SDK revision they were built for 188 * before using any prerelease platform APIs. Apps that detect a preview SDK revision 189 * other than the specific one they expect should fall back to using APIs from 190 * the previously published API level only to avoid unwanted runtime exceptions. 191 * </p> 192 */ 193 public static final int PREVIEW_SDK_INT = SystemProperties.getInt( 194 "ro.build.version.preview_sdk", 0); 195 196 /** 197 * The current development codename, or the string "REL" if this is 198 * a release build. 199 */ 200 public static final String CODENAME = getString("ro.build.version.codename"); 201 202 private static final String[] ALL_CODENAMES 203 = getStringList("ro.build.version.all_codenames", ","); 204 205 /** 206 * @hide 207 */ 208 public static final String[] ACTIVE_CODENAMES = "REL".equals(ALL_CODENAMES[0]) 209 ? new String[0] : ALL_CODENAMES; 210 211 /** 212 * The SDK version to use when accessing resources. 213 * Use the current SDK version code. For every active development codename 214 * we are operating under, we bump the assumed resource platform version by 1. 215 * @hide 216 */ 217 public static final int RESOURCES_SDK_INT = SDK_INT + ACTIVE_CODENAMES.length; 218 } 219 220 /** 221 * Enumeration of the currently known SDK version codes. These are the 222 * values that can be found in {@link VERSION#SDK}. Version numbers 223 * increment monotonically with each official platform release. 224 */ 225 public static class VERSION_CODES { 226 /** 227 * Magic version number for a current development build, which has 228 * not yet turned into an official release. 229 */ 230 public static final int CUR_DEVELOPMENT = 10000; 231 232 /** 233 * October 2008: The original, first, version of Android. Yay! 234 */ 235 public static final int BASE = 1; 236 237 /** 238 * February 2009: First Android update, officially called 1.1. 239 */ 240 public static final int BASE_1_1 = 2; 241 242 /** 243 * May 2009: Android 1.5. 244 */ 245 public static final int CUPCAKE = 3; 246 247 /** 248 * September 2009: Android 1.6. 249 * 250 * <p>Applications targeting this or a later release will get these 251 * new changes in behavior:</p> 252 * <ul> 253 * <li> They must explicitly request the 254 * {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} permission to be 255 * able to modify the contents of the SD card. (Apps targeting 256 * earlier versions will always request the permission.) 257 * <li> They must explicitly request the 258 * {@link android.Manifest.permission#READ_PHONE_STATE} permission to be 259 * able to be able to retrieve phone state info. (Apps targeting 260 * earlier versions will always request the permission.) 261 * <li> They are assumed to support different screen densities and 262 * sizes. (Apps targeting earlier versions are assumed to only support 263 * medium density normal size screens unless otherwise indicated). 264 * They can still explicitly specify screen support either way with the 265 * supports-screens manifest tag. 266 * <li> {@link android.widget.TabHost} will use the new dark tab 267 * background design. 268 * </ul> 269 */ 270 public static final int DONUT = 4; 271 272 /** 273 * November 2009: Android 2.0 274 * 275 * <p>Applications targeting this or a later release will get these 276 * new changes in behavior:</p> 277 * <ul> 278 * <li> The {@link android.app.Service#onStartCommand 279 * Service.onStartCommand} function will return the new 280 * {@link android.app.Service#START_STICKY} behavior instead of the 281 * old compatibility {@link android.app.Service#START_STICKY_COMPATIBILITY}. 282 * <li> The {@link android.app.Activity} class will now execute back 283 * key presses on the key up instead of key down, to be able to detect 284 * canceled presses from virtual keys. 285 * <li> The {@link android.widget.TabWidget} class will use a new color scheme 286 * for tabs. In the new scheme, the foreground tab has a medium gray background 287 * the background tabs have a dark gray background. 288 * </ul> 289 */ 290 public static final int ECLAIR = 5; 291 292 /** 293 * December 2009: Android 2.0.1 294 */ 295 public static final int ECLAIR_0_1 = 6; 296 297 /** 298 * January 2010: Android 2.1 299 */ 300 public static final int ECLAIR_MR1 = 7; 301 302 /** 303 * June 2010: Android 2.2 304 */ 305 public static final int FROYO = 8; 306 307 /** 308 * November 2010: Android 2.3 309 * 310 * <p>Applications targeting this or a later release will get these 311 * new changes in behavior:</p> 312 * <ul> 313 * <li> The application's notification icons will be shown on the new 314 * dark status bar background, so must be visible in this situation. 315 * </ul> 316 */ 317 public static final int GINGERBREAD = 9; 318 319 /** 320 * February 2011: Android 2.3.3. 321 */ 322 public static final int GINGERBREAD_MR1 = 10; 323 324 /** 325 * February 2011: Android 3.0. 326 * 327 * <p>Applications targeting this or a later release will get these 328 * new changes in behavior:</p> 329 * <ul> 330 * <li> The default theme for applications is now dark holographic: 331 * {@link android.R.style#Theme_Holo}. 332 * <li> On large screen devices that do not have a physical menu 333 * button, the soft (compatibility) menu is disabled. 334 * <li> The activity lifecycle has changed slightly as per 335 * {@link android.app.Activity}. 336 * <li> An application will crash if it does not call through 337 * to the super implementation of its 338 * {@link android.app.Activity#onPause Activity.onPause()} method. 339 * <li> When an application requires a permission to access one of 340 * its components (activity, receiver, service, provider), this 341 * permission is no longer enforced when the application wants to 342 * access its own component. This means it can require a permission 343 * on a component that it does not itself hold and still access that 344 * component. 345 * <li> {@link android.content.Context#getSharedPreferences 346 * Context.getSharedPreferences()} will not automatically reload 347 * the preferences if they have changed on storage, unless 348 * {@link android.content.Context#MODE_MULTI_PROCESS} is used. 349 * <li> {@link android.view.ViewGroup#setMotionEventSplittingEnabled} 350 * will default to true. 351 * <li> {@link android.view.WindowManager.LayoutParams#FLAG_SPLIT_TOUCH} 352 * is enabled by default on windows. 353 * <li> {@link android.widget.PopupWindow#isSplitTouchEnabled() 354 * PopupWindow.isSplitTouchEnabled()} will return true by default. 355 * <li> {@link android.widget.GridView} and {@link android.widget.ListView} 356 * will use {@link android.view.View#setActivated View.setActivated} 357 * for selected items if they do not implement {@link android.widget.Checkable}. 358 * <li> {@link android.widget.Scroller} will be constructed with 359 * "flywheel" behavior enabled by default. 360 * </ul> 361 */ 362 public static final int HONEYCOMB = 11; 363 364 /** 365 * May 2011: Android 3.1. 366 */ 367 public static final int HONEYCOMB_MR1 = 12; 368 369 /** 370 * June 2011: Android 3.2. 371 * 372 * <p>Update to Honeycomb MR1 to support 7 inch tablets, improve 373 * screen compatibility mode, etc.</p> 374 * 375 * <p>As of this version, applications that don't say whether they 376 * support XLARGE screens will be assumed to do so only if they target 377 * {@link #HONEYCOMB} or later; it had been {@link #GINGERBREAD} or 378 * later. Applications that don't support a screen size at least as 379 * large as the current screen will provide the user with a UI to 380 * switch them in to screen size compatibility mode.</p> 381 * 382 * <p>This version introduces new screen size resource qualifiers 383 * based on the screen size in dp: see 384 * {@link android.content.res.Configuration#screenWidthDp}, 385 * {@link android.content.res.Configuration#screenHeightDp}, and 386 * {@link android.content.res.Configuration#smallestScreenWidthDp}. 387 * Supplying these in <supports-screens> as per 388 * {@link android.content.pm.ApplicationInfo#requiresSmallestWidthDp}, 389 * {@link android.content.pm.ApplicationInfo#compatibleWidthLimitDp}, and 390 * {@link android.content.pm.ApplicationInfo#largestWidthLimitDp} is 391 * preferred over the older screen size buckets and for older devices 392 * the appropriate buckets will be inferred from them.</p> 393 * 394 * <p>Applications targeting this or a later release will get these 395 * new changes in behavior:</p> 396 * <ul> 397 * <li><p>New {@link android.content.pm.PackageManager#FEATURE_SCREEN_PORTRAIT} 398 * and {@link android.content.pm.PackageManager#FEATURE_SCREEN_LANDSCAPE} 399 * features were introduced in this release. Applications that target 400 * previous platform versions are assumed to require both portrait and 401 * landscape support in the device; when targeting Honeycomb MR1 or 402 * greater the application is responsible for specifying any specific 403 * orientation it requires.</p> 404 * <li><p>{@link android.os.AsyncTask} will use the serial executor 405 * by default when calling {@link android.os.AsyncTask#execute}.</p> 406 * <li><p>{@link android.content.pm.ActivityInfo#configChanges 407 * ActivityInfo.configChanges} will have the 408 * {@link android.content.pm.ActivityInfo#CONFIG_SCREEN_SIZE} and 409 * {@link android.content.pm.ActivityInfo#CONFIG_SMALLEST_SCREEN_SIZE} 410 * bits set; these need to be cleared for older applications because 411 * some developers have done absolute comparisons against this value 412 * instead of correctly masking the bits they are interested in. 413 * </ul> 414 */ 415 public static final int HONEYCOMB_MR2 = 13; 416 417 /** 418 * October 2011: Android 4.0. 419 * 420 * <p>Applications targeting this or a later release will get these 421 * new changes in behavior:</p> 422 * <ul> 423 * <li> For devices without a dedicated menu key, the software compatibility 424 * menu key will not be shown even on phones. By targeting Ice Cream Sandwich 425 * or later, your UI must always have its own menu UI affordance if needed, 426 * on both tablets and phones. The ActionBar will take care of this for you. 427 * <li> 2d drawing hardware acceleration is now turned on by default. 428 * You can use 429 * {@link android.R.attr#hardwareAccelerated android:hardwareAccelerated} 430 * to turn it off if needed, although this is strongly discouraged since 431 * it will result in poor performance on larger screen devices. 432 * <li> The default theme for applications is now the "device default" theme: 433 * {@link android.R.style#Theme_DeviceDefault}. This may be the 434 * holo dark theme or a different dark theme defined by the specific device. 435 * The {@link android.R.style#Theme_Holo} family must not be modified 436 * for a device to be considered compatible. Applications that explicitly 437 * request a theme from the Holo family will be guaranteed that these themes 438 * will not change character within the same platform version. Applications 439 * that wish to blend in with the device should use a theme from the 440 * {@link android.R.style#Theme_DeviceDefault} family. 441 * <li> Managed cursors can now throw an exception if you directly close 442 * the cursor yourself without stopping the management of it; previously failures 443 * would be silently ignored. 444 * <li> The fadingEdge attribute on views will be ignored (fading edges is no 445 * longer a standard part of the UI). A new requiresFadingEdge attribute allows 446 * applications to still force fading edges on for special cases. 447 * <li> {@link android.content.Context#bindService Context.bindService()} 448 * will not automatically add in {@link android.content.Context#BIND_WAIVE_PRIORITY}. 449 * <li> App Widgets will have standard padding automatically added around 450 * them, rather than relying on the padding being baked into the widget itself. 451 * <li> An exception will be thrown if you try to change the type of a 452 * window after it has been added to the window manager. Previously this 453 * would result in random incorrect behavior. 454 * <li> {@link android.view.animation.AnimationSet} will parse out 455 * the duration, fillBefore, fillAfter, repeatMode, and startOffset 456 * XML attributes that are defined. 457 * <li> {@link android.app.ActionBar#setHomeButtonEnabled 458 * ActionBar.setHomeButtonEnabled()} is false by default. 459 * </ul> 460 */ 461 public static final int ICE_CREAM_SANDWICH = 14; 462 463 /** 464 * December 2011: Android 4.0.3. 465 */ 466 public static final int ICE_CREAM_SANDWICH_MR1 = 15; 467 468 /** 469 * June 2012: Android 4.1. 470 * 471 * <p>Applications targeting this or a later release will get these 472 * new changes in behavior:</p> 473 * <ul> 474 * <li> You must explicitly request the {@link android.Manifest.permission#READ_CALL_LOG} 475 * and/or {@link android.Manifest.permission#WRITE_CALL_LOG} permissions; 476 * access to the call log is no longer implicitly provided through 477 * {@link android.Manifest.permission#READ_CONTACTS} and 478 * {@link android.Manifest.permission#WRITE_CONTACTS}. 479 * <li> {@link android.widget.RemoteViews} will throw an exception if 480 * setting an onClick handler for views being generated by a 481 * {@link android.widget.RemoteViewsService} for a collection container; 482 * previously this just resulted in a warning log message. 483 * <li> New {@link android.app.ActionBar} policy for embedded tabs: 484 * embedded tabs are now always stacked in the action bar when in portrait 485 * mode, regardless of the size of the screen. 486 * <li> {@link android.webkit.WebSettings#setAllowFileAccessFromFileURLs(boolean) 487 * WebSettings.setAllowFileAccessFromFileURLs} and 488 * {@link android.webkit.WebSettings#setAllowUniversalAccessFromFileURLs(boolean) 489 * WebSettings.setAllowUniversalAccessFromFileURLs} default to false. 490 * <li> Calls to {@link android.content.pm.PackageManager#setComponentEnabledSetting 491 * PackageManager.setComponentEnabledSetting} will now throw an 492 * IllegalArgumentException if the given component class name does not 493 * exist in the application's manifest. 494 * <li> {@link android.nfc.NfcAdapter#setNdefPushMessage 495 * NfcAdapter.setNdefPushMessage}, 496 * {@link android.nfc.NfcAdapter#setNdefPushMessageCallback 497 * NfcAdapter.setNdefPushMessageCallback} and 498 * {@link android.nfc.NfcAdapter#setOnNdefPushCompleteCallback 499 * NfcAdapter.setOnNdefPushCompleteCallback} will throw 500 * IllegalStateException if called after the Activity has been destroyed. 501 * <li> Accessibility services must require the new 502 * {@link android.Manifest.permission#BIND_ACCESSIBILITY_SERVICE} permission or 503 * they will not be available for use. 504 * <li> {@link android.accessibilityservice.AccessibilityServiceInfo#FLAG_INCLUDE_NOT_IMPORTANT_VIEWS 505 * AccessibilityServiceInfo.FLAG_INCLUDE_NOT_IMPORTANT_VIEWS} must be set 506 * for unimportant views to be included in queries. 507 * </ul> 508 */ 509 public static final int JELLY_BEAN = 16; 510 511 /** 512 * November 2012: Android 4.2, Moar jelly beans! 513 * 514 * <p>Applications targeting this or a later release will get these 515 * new changes in behavior:</p> 516 * <ul> 517 * <li>Content Providers: The default value of {@code android:exported} is now 518 * {@code false}. See 519 * <a href="{@docRoot}guide/topics/manifest/provider-element.html#exported"> 520 * the android:exported section</a> in the provider documentation for more details.</li> 521 * <li>{@link android.view.View#getLayoutDirection() View.getLayoutDirection()} 522 * can return different values than {@link android.view.View#LAYOUT_DIRECTION_LTR} 523 * based on the locale etc. 524 * <li> {@link android.webkit.WebView#addJavascriptInterface(Object, String) 525 * WebView.addJavascriptInterface} requires explicit annotations on methods 526 * for them to be accessible from Javascript. 527 * </ul> 528 */ 529 public static final int JELLY_BEAN_MR1 = 17; 530 531 /** 532 * July 2013: Android 4.3, the revenge of the beans. 533 */ 534 public static final int JELLY_BEAN_MR2 = 18; 535 536 /** 537 * October 2013: Android 4.4, KitKat, another tasty treat. 538 * 539 * <p>Applications targeting this or a later release will get these 540 * new changes in behavior:</p> 541 * <ul> 542 * <li> The default result of 543 * {@link android.preference.PreferenceActivity#isValidFragment(String) 544 * PreferenceActivity.isValueFragment} becomes false instead of true.</li> 545 * <li> In {@link android.webkit.WebView}, apps targeting earlier versions will have 546 * JS URLs evaluated directly and any result of the evaluation will not replace 547 * the current page content. Apps targetting KITKAT or later that load a JS URL will 548 * have the result of that URL replace the content of the current page</li> 549 * <li> {@link android.app.AlarmManager#set AlarmManager.set} becomes interpreted as 550 * an inexact value, to give the system more flexibility in scheduling alarms.</li> 551 * <li> {@link android.content.Context#getSharedPreferences(String, int) 552 * Context.getSharedPreferences} no longer allows a null name.</li> 553 * <li> {@link android.widget.RelativeLayout} changes to compute wrapped content 554 * margins correctly.</li> 555 * <li> {@link android.app.ActionBar}'s window content overlay is allowed to be 556 * drawn.</li> 557 * <li>The {@link android.Manifest.permission#READ_EXTERNAL_STORAGE} 558 * permission is now always enforced.</li> 559 * <li>Access to package-specific external storage directories belonging 560 * to the calling app no longer requires the 561 * {@link android.Manifest.permission#READ_EXTERNAL_STORAGE} or 562 * {@link android.Manifest.permission#WRITE_EXTERNAL_STORAGE} 563 * permissions.</li> 564 * </ul> 565 */ 566 public static final int KITKAT = 19; 567 568 /** 569 * Android 4.4W: KitKat for watches, snacks on the run. 570 * 571 * <p>Applications targeting this or a later release will get these 572 * new changes in behavior:</p> 573 * <ul> 574 * <li>{@link android.app.AlertDialog} might not have a default background if the theme does 575 * not specify one.</li> 576 * </ul> 577 */ 578 public static final int KITKAT_WATCH = 20; 579 580 /** 581 * Temporary until we completely switch to {@link #LOLLIPOP}. 582 * @hide 583 */ 584 public static final int L = 21; 585 586 /** 587 * Lollipop. A flat one with beautiful shadows. But still tasty. 588 * 589 * <p>Applications targeting this or a later release will get these 590 * new changes in behavior:</p> 591 * <ul> 592 * <li> {@link android.content.Context#bindService Context.bindService} now 593 * requires an explicit Intent, and will throw an exception if given an implicit 594 * Intent.</li> 595 * <li> {@link android.app.Notification.Builder Notification.Builder} will 596 * not have the colors of their various notification elements adjusted to better 597 * match the new material design look.</li> 598 * <li> {@link android.os.Message} will validate that a message is not currently 599 * in use when it is recycled.</li> 600 * <li> Hardware accelerated drawing in windows will be enabled automatically 601 * in most places.</li> 602 * <li> {@link android.widget.Spinner} throws an exception if attaching an 603 * adapter with more than one item type.</li> 604 * <li> If the app is a launcher, the launcher will be available to the user 605 * even when they are using corporate profiles (which requires that the app 606 * use {@link android.content.pm.LauncherApps} to correctly populate its 607 * apps UI).</li> 608 * <li> Calling {@link android.app.Service#stopForeground Service.stopForeground} 609 * with removeNotification false will modify the still posted notification so that 610 * it is no longer forced to be ongoing.</li> 611 * <li> A {@link android.service.dreams.DreamService} must require the 612 * {@link android.Manifest.permission#BIND_DREAM_SERVICE} permission to be usable.</li> 613 * </ul> 614 */ 615 public static final int LOLLIPOP = 21; 616 617 /** 618 * Lollipop with an extra sugar coating on the outside! 619 */ 620 public static final int LOLLIPOP_MR1 = 22; 621 622 /** 623 * M comes after L. 624 */ 625 public static final int MNC = CUR_DEVELOPMENT; 626 } 627 628 /** The type of build, like "user" or "eng". */ 629 public static final String TYPE = getString("ro.build.type"); 630 631 /** Comma-separated tags describing the build, like "unsigned,debug". */ 632 public static final String TAGS = getString("ro.build.tags"); 633 634 /** A string that uniquely identifies this build. Do not attempt to parse this value. */ 635 public static final String FINGERPRINT = deriveFingerprint(); 636 637 /** 638 * Some devices split the fingerprint components between multiple 639 * partitions, so we might derive the fingerprint at runtime. 640 */ 641 private static String deriveFingerprint() { 642 String finger = SystemProperties.get("ro.build.fingerprint"); 643 if (TextUtils.isEmpty(finger)) { 644 finger = getString("ro.product.brand") + '/' + 645 getString("ro.product.name") + '/' + 646 getString("ro.product.device") + ':' + 647 getString("ro.build.version.release") + '/' + 648 getString("ro.build.id") + '/' + 649 getString("ro.build.version.incremental") + ':' + 650 getString("ro.build.type") + '/' + 651 getString("ro.build.tags"); 652 } 653 return finger; 654 } 655 656 /** 657 * Ensure that raw fingerprint system property is defined. If it was derived 658 * dynamically by {@link #deriveFingerprint()} this is where we push the 659 * derived value into the property service. 660 * 661 * @hide 662 */ 663 public static void ensureFingerprintProperty() { 664 if (TextUtils.isEmpty(SystemProperties.get("ro.build.fingerprint"))) { 665 try { 666 SystemProperties.set("ro.build.fingerprint", FINGERPRINT); 667 } catch (IllegalArgumentException e) { 668 Slog.e(TAG, "Failed to set fingerprint property", e); 669 } 670 } 671 } 672 673 /** 674 * Verifies the the current flash of the device is consistent with what 675 * was expected at build time. 676 * 1) Checks that device fingerprint is defined and that it matches across 677 * various partitions. 678 * 2) Verifies radio and bootloader partitions are those expected in the build. 679 * 680 * @hide 681 */ 682 public static boolean isBuildConsistent() { 683 final String system = SystemProperties.get("ro.build.fingerprint"); 684 final String vendor = SystemProperties.get("ro.vendor.build.fingerprint"); 685 final String bootimage = SystemProperties.get("ro.bootimage.build.fingerprint"); 686 final String requiredBootloader = SystemProperties.get("ro.build.expect.bootloader"); 687 final String currentBootloader = SystemProperties.get("ro.bootloader"); 688 final String requiredRecovery = SystemProperties.get("ro.expect.recovery_id"); 689 final String currentRecovery = SystemProperties.get("ro.recovery_id"); 690 final String requiredRadio = SystemProperties.get("ro.build.expect.baseband"); 691 final String currentRadio = SystemProperties.get("gsm.version.baseband"); 692 693 if (TextUtils.isEmpty(system)) { 694 Slog.e(TAG, "Required ro.build.fingerprint is empty!"); 695 return false; 696 } 697 698 if (!TextUtils.isEmpty(vendor)) { 699 if (!Objects.equals(system, vendor)) { 700 Slog.e(TAG, "Mismatched fingerprints; system reported " + system 701 + " but vendor reported " + vendor); 702 return false; 703 } 704 } 705 706 if (!TextUtils.isEmpty(bootimage)) { 707 if (!Objects.equals(system, bootimage)) { 708 Slog.e(TAG, "Mismatched fingerprints; system reported " + system 709 + " but bootimage reported " + bootimage); 710 return false; 711 } 712 } 713 714 if (!TextUtils.isEmpty(requiredBootloader)) { 715 if (!Objects.equals(currentBootloader, requiredBootloader)) { 716 Slog.e(TAG, "Mismatched bootloader version: build requires " + requiredBootloader 717 + " but runtime reports " + currentBootloader); 718 return false; 719 } 720 } 721 722 if (!TextUtils.isEmpty(requiredRecovery)) { 723 if (!Objects.equals(currentRecovery, requiredRecovery)) { 724 Slog.e(TAG, "Mismatched recovery version: build requires " + requiredRecovery 725 + " but runtime reports " + currentRecovery); 726 return false; 727 } 728 } 729 730 /* TODO: uncomment when new bootloader lands b/20860620 731 if (!TextUtils.isEmpty(requiredRadio)) { 732 if (!Objects.equals(currentRadio, requiredRadio)) { 733 Slog.e(TAG, "Mismatched radio version: build requires " + requiredRadio 734 + " but runtime reports " + currentRadio); 735 return false; 736 } 737 } 738 */ 739 740 return true; 741 } 742 743 // The following properties only make sense for internal engineering builds. 744 public static final long TIME = getLong("ro.build.date.utc") * 1000; 745 public static final String USER = getString("ro.build.user"); 746 public static final String HOST = getString("ro.build.host"); 747 748 /** 749 * Returns true if we are running a debug build such as "user-debug" or "eng". 750 * @hide 751 */ 752 public static final boolean IS_DEBUGGABLE = 753 SystemProperties.getInt("ro.debuggable", 0) == 1; 754 755 /** 756 * Returns the version string for the radio firmware. May return 757 * null (if, for instance, the radio is not currently on). 758 */ 759 public static String getRadioVersion() { 760 return SystemProperties.get(TelephonyProperties.PROPERTY_BASEBAND_VERSION, null); 761 } 762 763 private static String getString(String property) { 764 return SystemProperties.get(property, UNKNOWN); 765 } 766 767 private static String[] getStringList(String property, String separator) { 768 String value = SystemProperties.get(property); 769 if (value.isEmpty()) { 770 return new String[0]; 771 } else { 772 return value.split(separator); 773 } 774 } 775 776 private static long getLong(String property) { 777 try { 778 return Long.parseLong(SystemProperties.get(property)); 779 } catch (NumberFormatException e) { 780 return -1; 781 } 782 } 783} 784