Resources.java revision c1d527926e1c82828e42bdc0c7abf50f6decc0a7
1/* 2 * Copyright (C) 2006 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.content.res; 18 19import android.annotation.AttrRes; 20import android.annotation.ColorInt; 21import android.annotation.StyleRes; 22import android.annotation.StyleableRes; 23import com.android.internal.util.XmlUtils; 24 25import org.xmlpull.v1.XmlPullParser; 26import org.xmlpull.v1.XmlPullParserException; 27 28import android.animation.Animator; 29import android.animation.StateListAnimator; 30import android.annotation.AnimRes; 31import android.annotation.AnyRes; 32import android.annotation.ArrayRes; 33import android.annotation.BoolRes; 34import android.annotation.ColorRes; 35import android.annotation.DimenRes; 36import android.annotation.DrawableRes; 37import android.annotation.FractionRes; 38import android.annotation.IntegerRes; 39import android.annotation.LayoutRes; 40import android.annotation.NonNull; 41import android.annotation.Nullable; 42import android.annotation.PluralsRes; 43import android.annotation.RawRes; 44import android.annotation.StringRes; 45import android.annotation.XmlRes; 46import android.content.pm.ActivityInfo; 47import android.graphics.Movie; 48import android.graphics.drawable.ColorDrawable; 49import android.graphics.drawable.Drawable; 50import android.graphics.drawable.Drawable.ConstantState; 51import android.os.Build; 52import android.os.Bundle; 53import android.os.Trace; 54import android.util.ArrayMap; 55import android.util.AttributeSet; 56import android.util.DisplayMetrics; 57import android.util.Log; 58import android.util.LongSparseArray; 59import android.util.Pools.SynchronizedPool; 60import android.util.Slog; 61import android.util.TypedValue; 62import android.view.ViewDebug; 63 64import java.io.IOException; 65import java.io.InputStream; 66import java.lang.ref.WeakReference; 67import java.util.Locale; 68 69import libcore.icu.NativePluralRules; 70 71/** 72 * Class for accessing an application's resources. This sits on top of the 73 * asset manager of the application (accessible through {@link #getAssets}) and 74 * provides a high-level API for getting typed data from the assets. 75 * 76 * <p>The Android resource system keeps track of all non-code assets associated with an 77 * application. You can use this class to access your application's resources. You can generally 78 * acquire the {@link android.content.res.Resources} instance associated with your application 79 * with {@link android.content.Context#getResources getResources()}.</p> 80 * 81 * <p>The Android SDK tools compile your application's resources into the application binary 82 * at build time. To use a resource, you must install it correctly in the source tree (inside 83 * your project's {@code res/} directory) and build your application. As part of the build 84 * process, the SDK tools generate symbols for each resource, which you can use in your application 85 * code to access the resources.</p> 86 * 87 * <p>Using application resources makes it easy to update various characteristics of your 88 * application without modifying code, and—by providing sets of alternative 89 * resources—enables you to optimize your application for a variety of device configurations 90 * (such as for different languages and screen sizes). This is an important aspect of developing 91 * Android applications that are compatible on different types of devices.</p> 92 * 93 * <p>For more information about using resources, see the documentation about <a 94 * href="{@docRoot}guide/topics/resources/index.html">Application Resources</a>.</p> 95 */ 96public class Resources { 97 static final String TAG = "Resources"; 98 99 private static final boolean DEBUG_LOAD = false; 100 private static final boolean DEBUG_CONFIG = false; 101 private static final boolean TRACE_FOR_PRELOAD = false; 102 private static final boolean TRACE_FOR_MISS_PRELOAD = false; 103 104 private static final int LAYOUT_DIR_CONFIG = ActivityInfo.activityInfoConfigToNative( 105 ActivityInfo.CONFIG_LAYOUT_DIRECTION); 106 107 private static final int ID_OTHER = 0x01000004; 108 109 private static final Object sSync = new Object(); 110 111 // Information about preloaded resources. Note that they are not 112 // protected by a lock, because while preloading in zygote we are all 113 // single-threaded, and after that these are immutable. 114 private static final LongSparseArray<ConstantState>[] sPreloadedDrawables; 115 private static final LongSparseArray<ConstantState> sPreloadedColorDrawables 116 = new LongSparseArray<>(); 117 private static final LongSparseArray<android.content.res.ConstantState<ColorStateList>> 118 sPreloadedColorStateLists = new LongSparseArray<>(); 119 120 private static final String CACHE_NOT_THEMED = ""; 121 private static final String CACHE_NULL_THEME = "null_theme"; 122 123 // Pool of TypedArrays targeted to this Resources object. 124 final SynchronizedPool<TypedArray> mTypedArrayPool = new SynchronizedPool<>(5); 125 126 // Used by BridgeResources in layoutlib 127 static Resources mSystem = null; 128 129 private static boolean sPreloaded; 130 private static int sPreloadedDensity; 131 132 // These are protected by mAccessLock. 133 private final Object mAccessLock = new Object(); 134 private final Configuration mTmpConfig = new Configuration(); 135 private final ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> mDrawableCache = 136 new ArrayMap<>(); 137 private final ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> mColorDrawableCache = 138 new ArrayMap<>(); 139 private final ConfigurationBoundResourceCache<ColorStateList> mColorStateListCache = 140 new ConfigurationBoundResourceCache<>(this); 141 private final ConfigurationBoundResourceCache<Animator> mAnimatorCache = 142 new ConfigurationBoundResourceCache<>(this); 143 private final ConfigurationBoundResourceCache<StateListAnimator> mStateListAnimatorCache = 144 new ConfigurationBoundResourceCache<>(this); 145 146 private TypedValue mTmpValue = new TypedValue(); 147 private boolean mPreloading; 148 149 private int mLastCachedXmlBlockIndex = -1; 150 private final int[] mCachedXmlBlockIds = { 0, 0, 0, 0 }; 151 private final XmlBlock[] mCachedXmlBlocks = new XmlBlock[4]; 152 153 final AssetManager mAssets; 154 final DisplayMetrics mMetrics = new DisplayMetrics(); 155 156 private final Configuration mConfiguration = new Configuration(); 157 private NativePluralRules mPluralRule; 158 159 private CompatibilityInfo mCompatibilityInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 160 161 static { 162 sPreloadedDrawables = new LongSparseArray[2]; 163 sPreloadedDrawables[0] = new LongSparseArray<>(); 164 sPreloadedDrawables[1] = new LongSparseArray<>(); 165 } 166 167 /** 168 * Returns the most appropriate default theme for the specified target SDK version. 169 * <ul> 170 * <li>Below API 11: Gingerbread 171 * <li>APIs 11 thru 14: Holo 172 * <li>APIs 14 thru XX: Device default dark 173 * <li>API XX and above: Device default light with dark action bar 174 * </ul> 175 * 176 * @param curTheme The current theme, or 0 if not specified. 177 * @param targetSdkVersion The target SDK version. 178 * @return A theme resource identifier 179 * @hide 180 */ 181 public static int selectDefaultTheme(int curTheme, int targetSdkVersion) { 182 return selectSystemTheme(curTheme, targetSdkVersion, 183 com.android.internal.R.style.Theme, 184 com.android.internal.R.style.Theme_Holo, 185 com.android.internal.R.style.Theme_DeviceDefault, 186 com.android.internal.R.style.Theme_DeviceDefault_Light_DarkActionBar); 187 } 188 189 /** @hide */ 190 public static int selectSystemTheme(int curTheme, int targetSdkVersion, int orig, int holo, 191 int dark, int deviceDefault) { 192 if (curTheme != 0) { 193 return curTheme; 194 } 195 if (targetSdkVersion < Build.VERSION_CODES.HONEYCOMB) { 196 return orig; 197 } 198 if (targetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 199 return holo; 200 } 201 if (targetSdkVersion < Build.VERSION_CODES.CUR_DEVELOPMENT) { 202 return dark; 203 } 204 return deviceDefault; 205 } 206 207 /** 208 * Used by AnimatorInflater. 209 * 210 * @hide 211 */ 212 public ConfigurationBoundResourceCache<Animator> getAnimatorCache() { 213 return mAnimatorCache; 214 } 215 216 /** 217 * Used by AnimatorInflater. 218 * 219 * @hide 220 */ 221 public ConfigurationBoundResourceCache<StateListAnimator> getStateListAnimatorCache() { 222 return mStateListAnimatorCache; 223 } 224 225 /** 226 * This exception is thrown by the resource APIs when a requested resource 227 * can not be found. 228 */ 229 public static class NotFoundException extends RuntimeException { 230 public NotFoundException() { 231 } 232 233 public NotFoundException(String name) { 234 super(name); 235 } 236 } 237 238 /** 239 * Create a new Resources object on top of an existing set of assets in an 240 * AssetManager. 241 * 242 * @param assets Previously created AssetManager. 243 * @param metrics Current display metrics to consider when 244 * selecting/computing resource values. 245 * @param config Desired device configuration to consider when 246 * selecting/computing resource values (optional). 247 */ 248 public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config) { 249 this(assets, metrics, config, CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO); 250 } 251 252 /** 253 * Creates a new Resources object with CompatibilityInfo. 254 * 255 * @param assets Previously created AssetManager. 256 * @param metrics Current display metrics to consider when 257 * selecting/computing resource values. 258 * @param config Desired device configuration to consider when 259 * selecting/computing resource values (optional). 260 * @param compatInfo this resource's compatibility info. Must not be null. 261 * @hide 262 */ 263 public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config, 264 CompatibilityInfo compatInfo) { 265 mAssets = assets; 266 mMetrics.setToDefaults(); 267 if (compatInfo != null) { 268 mCompatibilityInfo = compatInfo; 269 } 270 updateConfiguration(config, metrics); 271 assets.ensureStringBlocks(); 272 } 273 274 /** 275 * Return a global shared Resources object that provides access to only 276 * system resources (no application resources), and is not configured for 277 * the current screen (can not use dimension units, does not change based 278 * on orientation, etc). 279 */ 280 public static Resources getSystem() { 281 synchronized (sSync) { 282 Resources ret = mSystem; 283 if (ret == null) { 284 ret = new Resources(); 285 mSystem = ret; 286 } 287 288 return ret; 289 } 290 } 291 292 /** 293 * Return the string value associated with a particular resource ID. The 294 * returned object will be a String if this is a plain string; it will be 295 * some other type of CharSequence if it is styled. 296 * {@more} 297 * 298 * @param id The desired resource identifier, as generated by the aapt 299 * tool. This integer encodes the package, type, and resource 300 * entry. The value 0 is an invalid identifier. 301 * 302 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 303 * 304 * @return CharSequence The string data associated with the resource, plus 305 * possibly styled text information. 306 */ 307 public CharSequence getText(@StringRes int id) throws NotFoundException { 308 CharSequence res = mAssets.getResourceText(id); 309 if (res != null) { 310 return res; 311 } 312 throw new NotFoundException("String resource ID #0x" 313 + Integer.toHexString(id)); 314 } 315 316 /** 317 * Returns the character sequence necessary for grammatically correct pluralization 318 * of the given resource ID for the given quantity. 319 * Note that the character sequence is selected based solely on grammatical necessity, 320 * and that such rules differ between languages. Do not assume you know which string 321 * will be returned for a given quantity. See 322 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 323 * for more detail. 324 * 325 * @param id The desired resource identifier, as generated by the aapt 326 * tool. This integer encodes the package, type, and resource 327 * entry. The value 0 is an invalid identifier. 328 * @param quantity The number used to get the correct string for the current language's 329 * plural rules. 330 * 331 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 332 * 333 * @return CharSequence The string data associated with the resource, plus 334 * possibly styled text information. 335 */ 336 public CharSequence getQuantityText(@PluralsRes int id, int quantity) 337 throws NotFoundException { 338 NativePluralRules rule = getPluralRule(); 339 CharSequence res = mAssets.getResourceBagText(id, 340 attrForQuantityCode(rule.quantityForInt(quantity))); 341 if (res != null) { 342 return res; 343 } 344 res = mAssets.getResourceBagText(id, ID_OTHER); 345 if (res != null) { 346 return res; 347 } 348 throw new NotFoundException("Plural resource ID #0x" + Integer.toHexString(id) 349 + " quantity=" + quantity 350 + " item=" + stringForQuantityCode(rule.quantityForInt(quantity))); 351 } 352 353 private NativePluralRules getPluralRule() { 354 synchronized (sSync) { 355 if (mPluralRule == null) { 356 mPluralRule = NativePluralRules.forLocale(mConfiguration.locale); 357 } 358 return mPluralRule; 359 } 360 } 361 362 private static int attrForQuantityCode(int quantityCode) { 363 switch (quantityCode) { 364 case NativePluralRules.ZERO: return 0x01000005; 365 case NativePluralRules.ONE: return 0x01000006; 366 case NativePluralRules.TWO: return 0x01000007; 367 case NativePluralRules.FEW: return 0x01000008; 368 case NativePluralRules.MANY: return 0x01000009; 369 default: return ID_OTHER; 370 } 371 } 372 373 private static String stringForQuantityCode(int quantityCode) { 374 switch (quantityCode) { 375 case NativePluralRules.ZERO: return "zero"; 376 case NativePluralRules.ONE: return "one"; 377 case NativePluralRules.TWO: return "two"; 378 case NativePluralRules.FEW: return "few"; 379 case NativePluralRules.MANY: return "many"; 380 default: return "other"; 381 } 382 } 383 384 /** 385 * Return the string value associated with a particular resource ID. It 386 * will be stripped of any styled text information. 387 * {@more} 388 * 389 * @param id The desired resource identifier, as generated by the aapt 390 * tool. This integer encodes the package, type, and resource 391 * entry. The value 0 is an invalid identifier. 392 * 393 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 394 * 395 * @return String The string data associated with the resource, 396 * stripped of styled text information. 397 */ 398 @NonNull 399 public String getString(@StringRes int id) throws NotFoundException { 400 final CharSequence res = getText(id); 401 if (res != null) { 402 return res.toString(); 403 } 404 throw new NotFoundException("String resource ID #0x" 405 + Integer.toHexString(id)); 406 } 407 408 409 /** 410 * Return the string value associated with a particular resource ID, 411 * substituting the format arguments as defined in {@link java.util.Formatter} 412 * and {@link java.lang.String#format}. It will be stripped of any styled text 413 * information. 414 * {@more} 415 * 416 * @param id The desired resource identifier, as generated by the aapt 417 * tool. This integer encodes the package, type, and resource 418 * entry. The value 0 is an invalid identifier. 419 * 420 * @param formatArgs The format arguments that will be used for substitution. 421 * 422 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 423 * 424 * @return String The string data associated with the resource, 425 * stripped of styled text information. 426 */ 427 @NonNull 428 public String getString(@StringRes int id, Object... formatArgs) throws NotFoundException { 429 final String raw = getString(id); 430 return String.format(mConfiguration.locale, raw, formatArgs); 431 } 432 433 /** 434 * Formats the string necessary for grammatically correct pluralization 435 * of the given resource ID for the given quantity, using the given arguments. 436 * Note that the string is selected based solely on grammatical necessity, 437 * and that such rules differ between languages. Do not assume you know which string 438 * will be returned for a given quantity. See 439 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 440 * for more detail. 441 * 442 * <p>Substitution of format arguments works as if using 443 * {@link java.util.Formatter} and {@link java.lang.String#format}. 444 * The resulting string will be stripped of any styled text information. 445 * 446 * @param id The desired resource identifier, as generated by the aapt 447 * tool. This integer encodes the package, type, and resource 448 * entry. The value 0 is an invalid identifier. 449 * @param quantity The number used to get the correct string for the current language's 450 * plural rules. 451 * @param formatArgs The format arguments that will be used for substitution. 452 * 453 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 454 * 455 * @return String The string data associated with the resource, 456 * stripped of styled text information. 457 */ 458 public String getQuantityString(@PluralsRes int id, int quantity, Object... formatArgs) 459 throws NotFoundException { 460 String raw = getQuantityText(id, quantity).toString(); 461 return String.format(mConfiguration.locale, raw, formatArgs); 462 } 463 464 /** 465 * Returns the string necessary for grammatically correct pluralization 466 * of the given resource ID for the given quantity. 467 * Note that the string is selected based solely on grammatical necessity, 468 * and that such rules differ between languages. Do not assume you know which string 469 * will be returned for a given quantity. See 470 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 471 * for more detail. 472 * 473 * @param id The desired resource identifier, as generated by the aapt 474 * tool. This integer encodes the package, type, and resource 475 * entry. The value 0 is an invalid identifier. 476 * @param quantity The number used to get the correct string for the current language's 477 * plural rules. 478 * 479 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 480 * 481 * @return String The string data associated with the resource, 482 * stripped of styled text information. 483 */ 484 public String getQuantityString(@PluralsRes int id, int quantity) 485 throws NotFoundException { 486 return getQuantityText(id, quantity).toString(); 487 } 488 489 /** 490 * Return the string value associated with a particular resource ID. The 491 * returned object will be a String if this is a plain string; it will be 492 * some other type of CharSequence if it is styled. 493 * 494 * @param id The desired resource identifier, as generated by the aapt 495 * tool. This integer encodes the package, type, and resource 496 * entry. The value 0 is an invalid identifier. 497 * 498 * @param def The default CharSequence to return. 499 * 500 * @return CharSequence The string data associated with the resource, plus 501 * possibly styled text information, or def if id is 0 or not found. 502 */ 503 public CharSequence getText(@StringRes int id, CharSequence def) { 504 CharSequence res = id != 0 ? mAssets.getResourceText(id) : null; 505 return res != null ? res : def; 506 } 507 508 /** 509 * Return the styled text array associated with a particular resource ID. 510 * 511 * @param id The desired resource identifier, as generated by the aapt 512 * tool. This integer encodes the package, type, and resource 513 * entry. The value 0 is an invalid identifier. 514 * 515 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 516 * 517 * @return The styled text array associated with the resource. 518 */ 519 public CharSequence[] getTextArray(@ArrayRes int id) throws NotFoundException { 520 CharSequence[] res = mAssets.getResourceTextArray(id); 521 if (res != null) { 522 return res; 523 } 524 throw new NotFoundException("Text array resource ID #0x" 525 + Integer.toHexString(id)); 526 } 527 528 /** 529 * Return the string array associated with a particular resource ID. 530 * 531 * @param id The desired resource identifier, as generated by the aapt 532 * tool. This integer encodes the package, type, and resource 533 * entry. The value 0 is an invalid identifier. 534 * 535 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 536 * 537 * @return The string array associated with the resource. 538 */ 539 public String[] getStringArray(@ArrayRes int id) 540 throws NotFoundException { 541 String[] res = mAssets.getResourceStringArray(id); 542 if (res != null) { 543 return res; 544 } 545 throw new NotFoundException("String array resource ID #0x" 546 + Integer.toHexString(id)); 547 } 548 549 /** 550 * Return the int array associated with a particular resource ID. 551 * 552 * @param id The desired resource identifier, as generated by the aapt 553 * tool. This integer encodes the package, type, and resource 554 * entry. The value 0 is an invalid identifier. 555 * 556 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 557 * 558 * @return The int array associated with the resource. 559 */ 560 public int[] getIntArray(@ArrayRes int id) throws NotFoundException { 561 int[] res = mAssets.getArrayIntResource(id); 562 if (res != null) { 563 return res; 564 } 565 throw new NotFoundException("Int array resource ID #0x" 566 + Integer.toHexString(id)); 567 } 568 569 /** 570 * Return an array of heterogeneous values. 571 * 572 * @param id The desired resource identifier, as generated by the aapt 573 * tool. This integer encodes the package, type, and resource 574 * entry. The value 0 is an invalid identifier. 575 * 576 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 577 * 578 * @return Returns a TypedArray holding an array of the array values. 579 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 580 * when done with it. 581 */ 582 public TypedArray obtainTypedArray(@ArrayRes int id) 583 throws NotFoundException { 584 int len = mAssets.getArraySize(id); 585 if (len < 0) { 586 throw new NotFoundException("Array resource ID #0x" 587 + Integer.toHexString(id)); 588 } 589 590 TypedArray array = TypedArray.obtain(this, len); 591 array.mLength = mAssets.retrieveArray(id, array.mData); 592 array.mIndices[0] = 0; 593 594 return array; 595 } 596 597 /** 598 * Retrieve a dimensional for a particular resource ID. Unit 599 * conversions are based on the current {@link DisplayMetrics} associated 600 * with the resources. 601 * 602 * @param id The desired resource identifier, as generated by the aapt 603 * tool. This integer encodes the package, type, and resource 604 * entry. The value 0 is an invalid identifier. 605 * 606 * @return Resource dimension value multiplied by the appropriate 607 * metric. 608 * 609 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 610 * 611 * @see #getDimensionPixelOffset 612 * @see #getDimensionPixelSize 613 */ 614 public float getDimension(@DimenRes int id) throws NotFoundException { 615 synchronized (mAccessLock) { 616 TypedValue value = mTmpValue; 617 if (value == null) { 618 mTmpValue = value = new TypedValue(); 619 } 620 getValue(id, value, true); 621 if (value.type == TypedValue.TYPE_DIMENSION) { 622 return TypedValue.complexToDimension(value.data, mMetrics); 623 } 624 throw new NotFoundException( 625 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 626 + Integer.toHexString(value.type) + " is not valid"); 627 } 628 } 629 630 /** 631 * Retrieve a dimensional for a particular resource ID for use 632 * as an offset in raw pixels. This is the same as 633 * {@link #getDimension}, except the returned value is converted to 634 * integer pixels for you. An offset conversion involves simply 635 * truncating the base value to an integer. 636 * 637 * @param id The desired resource identifier, as generated by the aapt 638 * tool. This integer encodes the package, type, and resource 639 * entry. The value 0 is an invalid identifier. 640 * 641 * @return Resource dimension value multiplied by the appropriate 642 * metric and truncated to integer pixels. 643 * 644 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 645 * 646 * @see #getDimension 647 * @see #getDimensionPixelSize 648 */ 649 public int getDimensionPixelOffset(@DimenRes int id) throws NotFoundException { 650 synchronized (mAccessLock) { 651 TypedValue value = mTmpValue; 652 if (value == null) { 653 mTmpValue = value = new TypedValue(); 654 } 655 getValue(id, value, true); 656 if (value.type == TypedValue.TYPE_DIMENSION) { 657 return TypedValue.complexToDimensionPixelOffset( 658 value.data, mMetrics); 659 } 660 throw new NotFoundException( 661 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 662 + Integer.toHexString(value.type) + " is not valid"); 663 } 664 } 665 666 /** 667 * Retrieve a dimensional for a particular resource ID for use 668 * as a size in raw pixels. This is the same as 669 * {@link #getDimension}, except the returned value is converted to 670 * integer pixels for use as a size. A size conversion involves 671 * rounding the base value, and ensuring that a non-zero base value 672 * is at least one pixel in size. 673 * 674 * @param id The desired resource identifier, as generated by the aapt 675 * tool. This integer encodes the package, type, and resource 676 * entry. The value 0 is an invalid identifier. 677 * 678 * @return Resource dimension value multiplied by the appropriate 679 * metric and truncated to integer pixels. 680 * 681 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 682 * 683 * @see #getDimension 684 * @see #getDimensionPixelOffset 685 */ 686 public int getDimensionPixelSize(@DimenRes int id) throws NotFoundException { 687 synchronized (mAccessLock) { 688 TypedValue value = mTmpValue; 689 if (value == null) { 690 mTmpValue = value = new TypedValue(); 691 } 692 getValue(id, value, true); 693 if (value.type == TypedValue.TYPE_DIMENSION) { 694 return TypedValue.complexToDimensionPixelSize( 695 value.data, mMetrics); 696 } 697 throw new NotFoundException( 698 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 699 + Integer.toHexString(value.type) + " is not valid"); 700 } 701 } 702 703 /** 704 * Retrieve a fractional unit for a particular resource ID. 705 * 706 * @param id The desired resource identifier, as generated by the aapt 707 * tool. This integer encodes the package, type, and resource 708 * entry. The value 0 is an invalid identifier. 709 * @param base The base value of this fraction. In other words, a 710 * standard fraction is multiplied by this value. 711 * @param pbase The parent base value of this fraction. In other 712 * words, a parent fraction (nn%p) is multiplied by this 713 * value. 714 * 715 * @return Attribute fractional value multiplied by the appropriate 716 * base value. 717 * 718 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 719 */ 720 public float getFraction(@FractionRes int id, int base, int pbase) { 721 synchronized (mAccessLock) { 722 TypedValue value = mTmpValue; 723 if (value == null) { 724 mTmpValue = value = new TypedValue(); 725 } 726 getValue(id, value, true); 727 if (value.type == TypedValue.TYPE_FRACTION) { 728 return TypedValue.complexToFraction(value.data, base, pbase); 729 } 730 throw new NotFoundException( 731 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 732 + Integer.toHexString(value.type) + " is not valid"); 733 } 734 } 735 736 /** 737 * Return a drawable object associated with a particular resource ID. 738 * Various types of objects will be returned depending on the underlying 739 * resource -- for example, a solid color, PNG image, scalable image, etc. 740 * The Drawable API hides these implementation details. 741 * 742 * <p class="note"><strong>Note:</strong> Prior to 743 * {@link android.os.Build.VERSION_CODES#JELLY_BEAN}, this function 744 * would not correctly retrieve the final configuration density when 745 * the resource ID passed here is an alias to another Drawable resource. 746 * This means that if the density configuration of the alias resource 747 * is different than the actual resource, the density of the returned 748 * Drawable would be incorrect, resulting in bad scaling. To work 749 * around this, you can instead retrieve the Drawable through 750 * {@link TypedArray#getDrawable TypedArray.getDrawable}. Use 751 * {@link android.content.Context#obtainStyledAttributes(int[]) 752 * Context.obtainStyledAttributes} with 753 * an array containing the resource ID of interest to create the TypedArray.</p> 754 * 755 * <p class="note"><strong>Note:</strong> To obtain a themed drawable, use 756 * {@link android.content.Context#getDrawable(int) Context.getDrawable(int)} 757 * or {@link #getDrawable(int, Theme)} passing the desired theme.</p> 758 * 759 * @param id The desired resource identifier, as generated by the aapt 760 * tool. This integer encodes the package, type, and resource 761 * entry. The value 0 is an invalid identifier. 762 * @return Drawable An object that can be used to draw this resource. 763 * @throws NotFoundException Throws NotFoundException if the given ID does 764 * not exist. 765 * @see #getDrawable(int, Theme) 766 * @deprecated Use {@link #getDrawable(int, Theme)} instead. 767 */ 768 @Deprecated 769 @Nullable 770 public Drawable getDrawable(@DrawableRes int id) throws NotFoundException { 771 final Drawable d = getDrawable(id, null); 772 if (d != null && d.canApplyTheme()) { 773 Log.w(TAG, "Drawable " + getResourceName(id) + " has unresolved theme " 774 + "attributes! Consider using Resources.getDrawable(int, Theme) or " 775 + "Context.getDrawable(int).", new RuntimeException()); 776 } 777 return d; 778 } 779 780 /** 781 * Return a drawable object associated with a particular resource ID and 782 * styled for the specified theme. Various types of objects will be 783 * returned depending on the underlying resource -- for example, a solid 784 * color, PNG image, scalable image, etc. 785 * 786 * @param id The desired resource identifier, as generated by the aapt 787 * tool. This integer encodes the package, type, and resource 788 * entry. The value 0 is an invalid identifier. 789 * @param theme The theme used to style the drawable attributes, may be {@code null}. 790 * @return Drawable An object that can be used to draw this resource. 791 * @throws NotFoundException Throws NotFoundException if the given ID does 792 * not exist. 793 */ 794 @Nullable 795 public Drawable getDrawable(@DrawableRes int id, @Nullable Theme theme) throws NotFoundException { 796 TypedValue value; 797 synchronized (mAccessLock) { 798 value = mTmpValue; 799 if (value == null) { 800 value = new TypedValue(); 801 } else { 802 mTmpValue = null; 803 } 804 getValue(id, value, true); 805 } 806 final Drawable res = loadDrawable(value, id, theme); 807 synchronized (mAccessLock) { 808 if (mTmpValue == null) { 809 mTmpValue = value; 810 } 811 } 812 return res; 813 } 814 815 /** 816 * Return a drawable object associated with a particular resource ID for the 817 * given screen density in DPI. This will set the drawable's density to be 818 * the device's density multiplied by the ratio of actual drawable density 819 * to requested density. This allows the drawable to be scaled up to the 820 * correct size if needed. Various types of objects will be returned 821 * depending on the underlying resource -- for example, a solid color, PNG 822 * image, scalable image, etc. The Drawable API hides these implementation 823 * details. 824 * 825 * <p class="note"><strong>Note:</strong> To obtain a themed drawable, use 826 * {@link android.content.Context#getDrawable(int) Context.getDrawable(int)} 827 * or {@link #getDrawableForDensity(int, int, Theme)} passing the desired 828 * theme.</p> 829 * 830 * @param id The desired resource identifier, as generated by the aapt tool. 831 * This integer encodes the package, type, and resource entry. 832 * The value 0 is an invalid identifier. 833 * @param density the desired screen density indicated by the resource as 834 * found in {@link DisplayMetrics}. 835 * @return Drawable An object that can be used to draw this resource. 836 * @throws NotFoundException Throws NotFoundException if the given ID does 837 * not exist. 838 * @see #getDrawableForDensity(int, int, Theme) 839 * @deprecated Use {@link #getDrawableForDensity(int, int, Theme)} instead. 840 */ 841 @Deprecated 842 @Nullable 843 public Drawable getDrawableForDensity(@DrawableRes int id, int density) throws NotFoundException { 844 return getDrawableForDensity(id, density, null); 845 } 846 847 /** 848 * Return a drawable object associated with a particular resource ID for the 849 * given screen density in DPI and styled for the specified theme. 850 * 851 * @param id The desired resource identifier, as generated by the aapt tool. 852 * This integer encodes the package, type, and resource entry. 853 * The value 0 is an invalid identifier. 854 * @param density The desired screen density indicated by the resource as 855 * found in {@link DisplayMetrics}. 856 * @param theme The theme used to style the drawable attributes, may be {@code null}. 857 * @return Drawable An object that can be used to draw this resource. 858 * @throws NotFoundException Throws NotFoundException if the given ID does 859 * not exist. 860 */ 861 @Nullable 862 public Drawable getDrawableForDensity(@DrawableRes int id, int density, @Nullable Theme theme) { 863 TypedValue value; 864 synchronized (mAccessLock) { 865 value = mTmpValue; 866 if (value == null) { 867 value = new TypedValue(); 868 } else { 869 mTmpValue = null; 870 } 871 getValueForDensity(id, density, value, true); 872 873 /* 874 * Pretend the requested density is actually the display density. If 875 * the drawable returned is not the requested density, then force it 876 * to be scaled later by dividing its density by the ratio of 877 * requested density to actual device density. Drawables that have 878 * undefined density or no density don't need to be handled here. 879 */ 880 if (value.density > 0 && value.density != TypedValue.DENSITY_NONE) { 881 if (value.density == density) { 882 value.density = mMetrics.densityDpi; 883 } else { 884 value.density = (value.density * mMetrics.densityDpi) / density; 885 } 886 } 887 } 888 889 final Drawable res = loadDrawable(value, id, theme); 890 synchronized (mAccessLock) { 891 if (mTmpValue == null) { 892 mTmpValue = value; 893 } 894 } 895 return res; 896 } 897 898 /** 899 * Return a movie object associated with the particular resource ID. 900 * @param id The desired resource identifier, as generated by the aapt 901 * tool. This integer encodes the package, type, and resource 902 * entry. The value 0 is an invalid identifier. 903 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 904 * 905 */ 906 public Movie getMovie(@RawRes int id) throws NotFoundException { 907 InputStream is = openRawResource(id); 908 Movie movie = Movie.decodeStream(is); 909 try { 910 is.close(); 911 } 912 catch (java.io.IOException e) { 913 // don't care, since the return value is valid 914 } 915 return movie; 916 } 917 918 /** 919 * Returns a color integer associated with a particular resource ID. If the 920 * resource holds a complex {@link ColorStateList}, then the default color 921 * from the set is returned. 922 * 923 * @param id The desired resource identifier, as generated by the aapt 924 * tool. This integer encodes the package, type, and resource 925 * entry. The value 0 is an invalid identifier. 926 * 927 * @throws NotFoundException Throws NotFoundException if the given ID does 928 * not exist. 929 * 930 * @return A single color value in the form 0xAARRGGBB. 931 * @deprecated Use {@link #getColor(int, Theme)} instead. 932 */ 933 @ColorInt 934 @Deprecated 935 public int getColor(@ColorRes int id) throws NotFoundException { 936 return getColor(id, null); 937 } 938 939 /** 940 * Returns a themed color integer associated with a particular resource ID. 941 * If the resource holds a complex {@link ColorStateList}, then the default 942 * color from the set is returned. 943 * 944 * @param id The desired resource identifier, as generated by the aapt 945 * tool. This integer encodes the package, type, and resource 946 * entry. The value 0 is an invalid identifier. 947 * @param theme The theme used to style the color attributes, may be 948 * {@code null}. 949 * 950 * @throws NotFoundException Throws NotFoundException if the given ID does 951 * not exist. 952 * 953 * @return A single color value in the form 0xAARRGGBB. 954 */ 955 @ColorInt 956 public int getColor(@ColorRes int id, @Nullable Theme theme) throws NotFoundException { 957 TypedValue value; 958 synchronized (mAccessLock) { 959 value = mTmpValue; 960 if (value == null) { 961 value = new TypedValue(); 962 } 963 getValue(id, value, true); 964 if (value.type >= TypedValue.TYPE_FIRST_INT 965 && value.type <= TypedValue.TYPE_LAST_INT) { 966 mTmpValue = value; 967 return value.data; 968 } else if (value.type != TypedValue.TYPE_STRING) { 969 throw new NotFoundException( 970 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 971 + Integer.toHexString(value.type) + " is not valid"); 972 } 973 mTmpValue = null; 974 } 975 976 final ColorStateList csl = loadColorStateList(value, id, theme); 977 synchronized (mAccessLock) { 978 if (mTmpValue == null) { 979 mTmpValue = value; 980 } 981 } 982 983 return csl.getDefaultColor(); 984 } 985 986 /** 987 * Returns a color state list associated with a particular resource ID. The 988 * resource may contain either a single raw color value or a complex 989 * {@link ColorStateList} holding multiple possible colors. 990 * 991 * @param id The desired resource identifier of a {@link ColorStateList}, 992 * as generated by the aapt tool. This integer encodes the 993 * package, type, and resource entry. The value 0 is an invalid 994 * identifier. 995 * 996 * @throws NotFoundException Throws NotFoundException if the given ID does 997 * not exist. 998 * 999 * @return A ColorStateList object containing either a single solid color 1000 * or multiple colors that can be selected based on a state. 1001 * @deprecated Use {@link #getColorStateList(int, Theme)} instead. 1002 */ 1003 @Nullable 1004 @Deprecated 1005 public ColorStateList getColorStateList(@ColorRes int id) throws NotFoundException { 1006 final ColorStateList csl = getColorStateList(id, null); 1007 if (csl != null && csl.canApplyTheme()) { 1008 Log.w(TAG, "ColorStateList " + getResourceName(id) + " has " 1009 + "unresolved theme attributes! Consider using " 1010 + "Resources.getColorStateList(int, Theme) or " 1011 + "Context.getColorStateList(int).", new RuntimeException()); 1012 } 1013 return csl; 1014 } 1015 1016 /** 1017 * Returns a themed color state list associated with a particular resource 1018 * ID. The resource may contain either a single raw color value or a 1019 * complex {@link ColorStateList} holding multiple possible colors. 1020 * 1021 * @param id The desired resource identifier of a {@link ColorStateList}, 1022 * as generated by the aapt tool. This integer encodes the 1023 * package, type, and resource entry. The value 0 is an invalid 1024 * identifier. 1025 * @param theme The theme used to style the color attributes, may be 1026 * {@code null}. 1027 * 1028 * @throws NotFoundException Throws NotFoundException if the given ID does 1029 * not exist. 1030 * 1031 * @return A themed ColorStateList object containing either a single solid 1032 * color or multiple colors that can be selected based on a state. 1033 */ 1034 @Nullable 1035 public ColorStateList getColorStateList(@ColorRes int id, @Nullable Theme theme) 1036 throws NotFoundException { 1037 TypedValue value; 1038 synchronized (mAccessLock) { 1039 value = mTmpValue; 1040 if (value == null) { 1041 value = new TypedValue(); 1042 } else { 1043 mTmpValue = null; 1044 } 1045 getValue(id, value, true); 1046 } 1047 1048 final ColorStateList res = loadColorStateList(value, id, theme); 1049 synchronized (mAccessLock) { 1050 if (mTmpValue == null) { 1051 mTmpValue = value; 1052 } 1053 } 1054 1055 return res; 1056 } 1057 1058 /** 1059 * Return a boolean associated with a particular resource ID. This can be 1060 * used with any integral resource value, and will return true if it is 1061 * non-zero. 1062 * 1063 * @param id The desired resource identifier, as generated by the aapt 1064 * tool. This integer encodes the package, type, and resource 1065 * entry. The value 0 is an invalid identifier. 1066 * 1067 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1068 * 1069 * @return Returns the boolean value contained in the resource. 1070 */ 1071 public boolean getBoolean(@BoolRes int id) throws NotFoundException { 1072 synchronized (mAccessLock) { 1073 TypedValue value = mTmpValue; 1074 if (value == null) { 1075 mTmpValue = value = new TypedValue(); 1076 } 1077 getValue(id, value, true); 1078 if (value.type >= TypedValue.TYPE_FIRST_INT 1079 && value.type <= TypedValue.TYPE_LAST_INT) { 1080 return value.data != 0; 1081 } 1082 throw new NotFoundException( 1083 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 1084 + Integer.toHexString(value.type) + " is not valid"); 1085 } 1086 } 1087 1088 /** 1089 * Return an integer associated with a particular resource ID. 1090 * 1091 * @param id The desired resource identifier, as generated by the aapt 1092 * tool. This integer encodes the package, type, and resource 1093 * entry. The value 0 is an invalid identifier. 1094 * 1095 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1096 * 1097 * @return Returns the integer value contained in the resource. 1098 */ 1099 public int getInteger(@IntegerRes int id) throws NotFoundException { 1100 synchronized (mAccessLock) { 1101 TypedValue value = mTmpValue; 1102 if (value == null) { 1103 mTmpValue = value = new TypedValue(); 1104 } 1105 getValue(id, value, true); 1106 if (value.type >= TypedValue.TYPE_FIRST_INT 1107 && value.type <= TypedValue.TYPE_LAST_INT) { 1108 return value.data; 1109 } 1110 throw new NotFoundException( 1111 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 1112 + Integer.toHexString(value.type) + " is not valid"); 1113 } 1114 } 1115 1116 /** 1117 * Retrieve a floating-point value for a particular resource ID. 1118 * 1119 * @param id The desired resource identifier, as generated by the aapt 1120 * tool. This integer encodes the package, type, and resource 1121 * entry. The value 0 is an invalid identifier. 1122 * 1123 * @return Returns the floating-point value contained in the resource. 1124 * 1125 * @throws NotFoundException Throws NotFoundException if the given ID does 1126 * not exist or is not a floating-point value. 1127 * @hide Pending API council approval. 1128 */ 1129 public float getFloat(int id) { 1130 synchronized (mAccessLock) { 1131 TypedValue value = mTmpValue; 1132 if (value == null) { 1133 mTmpValue = value = new TypedValue(); 1134 } 1135 getValue(id, value, true); 1136 if (value.type == TypedValue.TYPE_FLOAT) { 1137 return value.getFloat(); 1138 } 1139 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) + " type #0x" 1140 + Integer.toHexString(value.type) + " is not valid"); 1141 } 1142 } 1143 1144 /** 1145 * Return an XmlResourceParser through which you can read a view layout 1146 * description for the given resource ID. This parser has limited 1147 * functionality -- in particular, you can't change its input, and only 1148 * the high-level events are available. 1149 * 1150 * <p>This function is really a simple wrapper for calling 1151 * {@link #getXml} with a layout resource. 1152 * 1153 * @param id The desired resource identifier, as generated by the aapt 1154 * tool. This integer encodes the package, type, and resource 1155 * entry. The value 0 is an invalid identifier. 1156 * 1157 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1158 * 1159 * @return A new parser object through which you can read 1160 * the XML data. 1161 * 1162 * @see #getXml 1163 */ 1164 public XmlResourceParser getLayout(@LayoutRes int id) throws NotFoundException { 1165 return loadXmlResourceParser(id, "layout"); 1166 } 1167 1168 /** 1169 * Return an XmlResourceParser through which you can read an animation 1170 * description for the given resource ID. This parser has limited 1171 * functionality -- in particular, you can't change its input, and only 1172 * the high-level events are available. 1173 * 1174 * <p>This function is really a simple wrapper for calling 1175 * {@link #getXml} with an animation resource. 1176 * 1177 * @param id The desired resource identifier, as generated by the aapt 1178 * tool. This integer encodes the package, type, and resource 1179 * entry. The value 0 is an invalid identifier. 1180 * 1181 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1182 * 1183 * @return A new parser object through which you can read 1184 * the XML data. 1185 * 1186 * @see #getXml 1187 */ 1188 public XmlResourceParser getAnimation(@AnimRes int id) throws NotFoundException { 1189 return loadXmlResourceParser(id, "anim"); 1190 } 1191 1192 /** 1193 * Return an XmlResourceParser through which you can read a generic XML 1194 * resource for the given resource ID. 1195 * 1196 * <p>The XmlPullParser implementation returned here has some limited 1197 * functionality. In particular, you can't change its input, and only 1198 * high-level parsing events are available (since the document was 1199 * pre-parsed for you at build time, which involved merging text and 1200 * stripping comments). 1201 * 1202 * @param id The desired resource identifier, as generated by the aapt 1203 * tool. This integer encodes the package, type, and resource 1204 * entry. The value 0 is an invalid identifier. 1205 * 1206 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1207 * 1208 * @return A new parser object through which you can read 1209 * the XML data. 1210 * 1211 * @see android.util.AttributeSet 1212 */ 1213 public XmlResourceParser getXml(@XmlRes int id) throws NotFoundException { 1214 return loadXmlResourceParser(id, "xml"); 1215 } 1216 1217 /** 1218 * Open a data stream for reading a raw resource. This can only be used 1219 * with resources whose value is the name of an asset files -- that is, it can be 1220 * used to open drawable, sound, and raw resources; it will fail on string 1221 * and color resources. 1222 * 1223 * @param id The resource identifier to open, as generated by the appt 1224 * tool. 1225 * 1226 * @return InputStream Access to the resource data. 1227 * 1228 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1229 * 1230 */ 1231 public InputStream openRawResource(@RawRes int id) throws NotFoundException { 1232 TypedValue value; 1233 synchronized (mAccessLock) { 1234 value = mTmpValue; 1235 if (value == null) { 1236 value = new TypedValue(); 1237 } else { 1238 mTmpValue = null; 1239 } 1240 } 1241 InputStream res = openRawResource(id, value); 1242 synchronized (mAccessLock) { 1243 if (mTmpValue == null) { 1244 mTmpValue = value; 1245 } 1246 } 1247 return res; 1248 } 1249 1250 /** 1251 * Open a data stream for reading a raw resource. This can only be used 1252 * with resources whose value is the name of an asset file -- that is, it can be 1253 * used to open drawable, sound, and raw resources; it will fail on string 1254 * and color resources. 1255 * 1256 * @param id The resource identifier to open, as generated by the appt tool. 1257 * @param value The TypedValue object to hold the resource information. 1258 * 1259 * @return InputStream Access to the resource data. 1260 * 1261 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1262 */ 1263 public InputStream openRawResource(@RawRes int id, TypedValue value) 1264 throws NotFoundException { 1265 getValue(id, value, true); 1266 1267 try { 1268 return mAssets.openNonAsset(value.assetCookie, value.string.toString(), 1269 AssetManager.ACCESS_STREAMING); 1270 } catch (Exception e) { 1271 NotFoundException rnf = new NotFoundException("File " + value.string.toString() + 1272 " from drawable resource ID #0x" + Integer.toHexString(id)); 1273 rnf.initCause(e); 1274 throw rnf; 1275 } 1276 } 1277 1278 /** 1279 * Open a file descriptor for reading a raw resource. This can only be used 1280 * with resources whose value is the name of an asset files -- that is, it can be 1281 * used to open drawable, sound, and raw resources; it will fail on string 1282 * and color resources. 1283 * 1284 * <p>This function only works for resources that are stored in the package 1285 * as uncompressed data, which typically includes things like mp3 files 1286 * and png images. 1287 * 1288 * @param id The resource identifier to open, as generated by the appt 1289 * tool. 1290 * 1291 * @return AssetFileDescriptor A new file descriptor you can use to read 1292 * the resource. This includes the file descriptor itself, as well as the 1293 * offset and length of data where the resource appears in the file. A 1294 * null is returned if the file exists but is compressed. 1295 * 1296 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1297 * 1298 */ 1299 public AssetFileDescriptor openRawResourceFd(@RawRes int id) 1300 throws NotFoundException { 1301 TypedValue value; 1302 synchronized (mAccessLock) { 1303 value = mTmpValue; 1304 if (value == null) { 1305 value = new TypedValue(); 1306 } else { 1307 mTmpValue = null; 1308 } 1309 getValue(id, value, true); 1310 } 1311 try { 1312 return mAssets.openNonAssetFd( 1313 value.assetCookie, value.string.toString()); 1314 } catch (Exception e) { 1315 NotFoundException rnf = new NotFoundException( 1316 "File " + value.string.toString() 1317 + " from drawable resource ID #0x" 1318 + Integer.toHexString(id)); 1319 rnf.initCause(e); 1320 throw rnf; 1321 } finally { 1322 synchronized (mAccessLock) { 1323 if (mTmpValue == null) { 1324 mTmpValue = value; 1325 } 1326 } 1327 } 1328 } 1329 1330 /** 1331 * Return the raw data associated with a particular resource ID. 1332 * 1333 * @param id The desired resource identifier, as generated by the aapt 1334 * tool. This integer encodes the package, type, and resource 1335 * entry. The value 0 is an invalid identifier. 1336 * @param outValue Object in which to place the resource data. 1337 * @param resolveRefs If true, a resource that is a reference to another 1338 * resource will be followed so that you receive the 1339 * actual final resource data. If false, the TypedValue 1340 * will be filled in with the reference itself. 1341 * 1342 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1343 * 1344 */ 1345 public void getValue(@AnyRes int id, TypedValue outValue, boolean resolveRefs) 1346 throws NotFoundException { 1347 boolean found = mAssets.getResourceValue(id, 0, outValue, resolveRefs); 1348 if (found) { 1349 return; 1350 } 1351 throw new NotFoundException("Resource ID #0x" 1352 + Integer.toHexString(id)); 1353 } 1354 1355 /** 1356 * Get the raw value associated with a resource with associated density. 1357 * 1358 * @param id resource identifier 1359 * @param density density in DPI 1360 * @param resolveRefs If true, a resource that is a reference to another 1361 * resource will be followed so that you receive the actual final 1362 * resource data. If false, the TypedValue will be filled in with 1363 * the reference itself. 1364 * @throws NotFoundException Throws NotFoundException if the given ID does 1365 * not exist. 1366 * @see #getValue(String, TypedValue, boolean) 1367 */ 1368 public void getValueForDensity(@AnyRes int id, int density, TypedValue outValue, 1369 boolean resolveRefs) throws NotFoundException { 1370 boolean found = mAssets.getResourceValue(id, density, outValue, resolveRefs); 1371 if (found) { 1372 return; 1373 } 1374 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id)); 1375 } 1376 1377 /** 1378 * Return the raw data associated with a particular resource ID. 1379 * See getIdentifier() for information on how names are mapped to resource 1380 * IDs, and getString(int) for information on how string resources are 1381 * retrieved. 1382 * 1383 * <p>Note: use of this function is discouraged. It is much more 1384 * efficient to retrieve resources by identifier than by name. 1385 * 1386 * @param name The name of the desired resource. This is passed to 1387 * getIdentifier() with a default type of "string". 1388 * @param outValue Object in which to place the resource data. 1389 * @param resolveRefs If true, a resource that is a reference to another 1390 * resource will be followed so that you receive the 1391 * actual final resource data. If false, the TypedValue 1392 * will be filled in with the reference itself. 1393 * 1394 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1395 * 1396 */ 1397 public void getValue(String name, TypedValue outValue, boolean resolveRefs) 1398 throws NotFoundException { 1399 int id = getIdentifier(name, "string", null); 1400 if (id != 0) { 1401 getValue(id, outValue, resolveRefs); 1402 return; 1403 } 1404 throw new NotFoundException("String resource name " + name); 1405 } 1406 1407 /** 1408 * This class holds the current attribute values for a particular theme. 1409 * In other words, a Theme is a set of values for resource attributes; 1410 * these are used in conjunction with {@link TypedArray} 1411 * to resolve the final value for an attribute. 1412 * 1413 * <p>The Theme's attributes come into play in two ways: (1) a styled 1414 * attribute can explicit reference a value in the theme through the 1415 * "?themeAttribute" syntax; (2) if no value has been defined for a 1416 * particular styled attribute, as a last resort we will try to find that 1417 * attribute's value in the Theme. 1418 * 1419 * <p>You will normally use the {@link #obtainStyledAttributes} APIs to 1420 * retrieve XML attributes with style and theme information applied. 1421 */ 1422 public final class Theme { 1423 /** 1424 * Place new attribute values into the theme. The style resource 1425 * specified by <var>resid</var> will be retrieved from this Theme's 1426 * resources, its values placed into the Theme object. 1427 * 1428 * <p>The semantics of this function depends on the <var>force</var> 1429 * argument: If false, only values that are not already defined in 1430 * the theme will be copied from the system resource; otherwise, if 1431 * any of the style's attributes are already defined in the theme, the 1432 * current values in the theme will be overwritten. 1433 * 1434 * @param resId The resource ID of a style resource from which to 1435 * obtain attribute values. 1436 * @param force If true, values in the style resource will always be 1437 * used in the theme; otherwise, they will only be used 1438 * if not already defined in the theme. 1439 */ 1440 public void applyStyle(int resId, boolean force) { 1441 AssetManager.applyThemeStyle(mTheme, resId, force); 1442 1443 mThemeResId = resId; 1444 mKey += Integer.toHexString(resId) + (force ? "! " : " "); 1445 } 1446 1447 /** 1448 * Set this theme to hold the same contents as the theme 1449 * <var>other</var>. If both of these themes are from the same 1450 * Resources object, they will be identical after this function 1451 * returns. If they are from different Resources, only the resources 1452 * they have in common will be set in this theme. 1453 * 1454 * @param other The existing Theme to copy from. 1455 */ 1456 public void setTo(Theme other) { 1457 AssetManager.copyTheme(mTheme, other.mTheme); 1458 1459 mThemeResId = other.mThemeResId; 1460 mKey = other.mKey; 1461 } 1462 1463 /** 1464 * Return a TypedArray holding the values defined by 1465 * <var>Theme</var> which are listed in <var>attrs</var>. 1466 * 1467 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1468 * with the array. 1469 * 1470 * @param attrs The desired attributes. 1471 * 1472 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1473 * 1474 * @return Returns a TypedArray holding an array of the attribute values. 1475 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1476 * when done with it. 1477 * 1478 * @see Resources#obtainAttributes 1479 * @see #obtainStyledAttributes(int, int[]) 1480 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1481 */ 1482 public TypedArray obtainStyledAttributes(@StyleableRes int[] attrs) { 1483 final int len = attrs.length; 1484 final TypedArray array = TypedArray.obtain(Resources.this, len); 1485 array.mTheme = this; 1486 AssetManager.applyStyle(mTheme, 0, 0, 0, attrs, array.mData, array.mIndices); 1487 return array; 1488 } 1489 1490 /** 1491 * Return a TypedArray holding the values defined by the style 1492 * resource <var>resid</var> which are listed in <var>attrs</var>. 1493 * 1494 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1495 * with the array. 1496 * 1497 * @param resid The desired style resource. 1498 * @param attrs The desired attributes in the style. 1499 * 1500 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1501 * 1502 * @return Returns a TypedArray holding an array of the attribute values. 1503 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1504 * when done with it. 1505 * 1506 * @see Resources#obtainAttributes 1507 * @see #obtainStyledAttributes(int[]) 1508 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1509 */ 1510 public TypedArray obtainStyledAttributes(@StyleRes int resid, @StyleableRes int[] attrs) 1511 throws NotFoundException { 1512 final int len = attrs.length; 1513 final TypedArray array = TypedArray.obtain(Resources.this, len); 1514 array.mTheme = this; 1515 if (false) { 1516 int[] data = array.mData; 1517 1518 System.out.println("**********************************************************"); 1519 System.out.println("**********************************************************"); 1520 System.out.println("**********************************************************"); 1521 System.out.println("Attributes:"); 1522 String s = " Attrs:"; 1523 int i; 1524 for (i=0; i<attrs.length; i++) { 1525 s = s + " 0x" + Integer.toHexString(attrs[i]); 1526 } 1527 System.out.println(s); 1528 s = " Found:"; 1529 TypedValue value = new TypedValue(); 1530 for (i=0; i<attrs.length; i++) { 1531 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1532 value.type = data[d+AssetManager.STYLE_TYPE]; 1533 value.data = data[d+AssetManager.STYLE_DATA]; 1534 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1535 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1536 s = s + " 0x" + Integer.toHexString(attrs[i]) 1537 + "=" + value; 1538 } 1539 System.out.println(s); 1540 } 1541 AssetManager.applyStyle(mTheme, 0, resid, 0, attrs, array.mData, array.mIndices); 1542 return array; 1543 } 1544 1545 /** 1546 * Return a TypedArray holding the attribute values in 1547 * <var>set</var> 1548 * that are listed in <var>attrs</var>. In addition, if the given 1549 * AttributeSet specifies a style class (through the "style" attribute), 1550 * that style will be applied on top of the base attributes it defines. 1551 * 1552 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1553 * with the array. 1554 * 1555 * <p>When determining the final value of a particular attribute, there 1556 * are four inputs that come into play:</p> 1557 * 1558 * <ol> 1559 * <li> Any attribute values in the given AttributeSet. 1560 * <li> The style resource specified in the AttributeSet (named 1561 * "style"). 1562 * <li> The default style specified by <var>defStyleAttr</var> and 1563 * <var>defStyleRes</var> 1564 * <li> The base values in this theme. 1565 * </ol> 1566 * 1567 * <p>Each of these inputs is considered in-order, with the first listed 1568 * taking precedence over the following ones. In other words, if in the 1569 * AttributeSet you have supplied <code><Button 1570 * textColor="#ff000000"></code>, then the button's text will 1571 * <em>always</em> be black, regardless of what is specified in any of 1572 * the styles. 1573 * 1574 * @param set The base set of attribute values. May be null. 1575 * @param attrs The desired attributes to be retrieved. 1576 * @param defStyleAttr An attribute in the current theme that contains a 1577 * reference to a style resource that supplies 1578 * defaults values for the TypedArray. Can be 1579 * 0 to not look for defaults. 1580 * @param defStyleRes A resource identifier of a style resource that 1581 * supplies default values for the TypedArray, 1582 * used only if defStyleAttr is 0 or can not be found 1583 * in the theme. Can be 0 to not look for defaults. 1584 * 1585 * @return Returns a TypedArray holding an array of the attribute values. 1586 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1587 * when done with it. 1588 * 1589 * @see Resources#obtainAttributes 1590 * @see #obtainStyledAttributes(int[]) 1591 * @see #obtainStyledAttributes(int, int[]) 1592 */ 1593 public TypedArray obtainStyledAttributes(AttributeSet set, 1594 @StyleableRes int[] attrs, @AttrRes int defStyleAttr, @StyleRes int defStyleRes) { 1595 final int len = attrs.length; 1596 final TypedArray array = TypedArray.obtain(Resources.this, len); 1597 1598 // XXX note that for now we only work with compiled XML files. 1599 // To support generic XML files we will need to manually parse 1600 // out the attributes from the XML file (applying type information 1601 // contained in the resources and such). 1602 final XmlBlock.Parser parser = (XmlBlock.Parser)set; 1603 AssetManager.applyStyle(mTheme, defStyleAttr, defStyleRes, 1604 parser != null ? parser.mParseState : 0, attrs, array.mData, array.mIndices); 1605 1606 array.mTheme = this; 1607 array.mXml = parser; 1608 1609 if (false) { 1610 int[] data = array.mData; 1611 1612 System.out.println("Attributes:"); 1613 String s = " Attrs:"; 1614 int i; 1615 for (i=0; i<set.getAttributeCount(); i++) { 1616 s = s + " " + set.getAttributeName(i); 1617 int id = set.getAttributeNameResource(i); 1618 if (id != 0) { 1619 s = s + "(0x" + Integer.toHexString(id) + ")"; 1620 } 1621 s = s + "=" + set.getAttributeValue(i); 1622 } 1623 System.out.println(s); 1624 s = " Found:"; 1625 TypedValue value = new TypedValue(); 1626 for (i=0; i<attrs.length; i++) { 1627 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1628 value.type = data[d+AssetManager.STYLE_TYPE]; 1629 value.data = data[d+AssetManager.STYLE_DATA]; 1630 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1631 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1632 s = s + " 0x" + Integer.toHexString(attrs[i]) 1633 + "=" + value; 1634 } 1635 System.out.println(s); 1636 } 1637 1638 return array; 1639 } 1640 1641 /** 1642 * Retrieve the values for a set of attributes in the Theme. The 1643 * contents of the typed array are ultimately filled in by 1644 * {@link Resources#getValue}. 1645 * 1646 * @param values The base set of attribute values, must be equal in 1647 * length to {@code attrs}. All values must be of type 1648 * {@link TypedValue#TYPE_ATTRIBUTE}. 1649 * @param attrs The desired attributes to be retrieved. 1650 * @return Returns a TypedArray holding an array of the attribute 1651 * values. Be sure to call {@link TypedArray#recycle()} 1652 * when done with it. 1653 * @hide 1654 */ 1655 @NonNull 1656 public TypedArray resolveAttributes(@NonNull int[] values, @NonNull int[] attrs) { 1657 final int len = attrs.length; 1658 if (values == null || len != values.length) { 1659 throw new IllegalArgumentException( 1660 "Base attribute values must the same length as attrs"); 1661 } 1662 1663 final TypedArray array = TypedArray.obtain(Resources.this, len); 1664 AssetManager.resolveAttrs(mTheme, 0, 0, values, attrs, array.mData, array.mIndices); 1665 array.mTheme = this; 1666 array.mXml = null; 1667 1668 return array; 1669 } 1670 1671 /** 1672 * Retrieve the value of an attribute in the Theme. The contents of 1673 * <var>outValue</var> are ultimately filled in by 1674 * {@link Resources#getValue}. 1675 * 1676 * @param resid The resource identifier of the desired theme 1677 * attribute. 1678 * @param outValue Filled in with the ultimate resource value supplied 1679 * by the attribute. 1680 * @param resolveRefs If true, resource references will be walked; if 1681 * false, <var>outValue</var> may be a 1682 * TYPE_REFERENCE. In either case, it will never 1683 * be a TYPE_ATTRIBUTE. 1684 * 1685 * @return boolean Returns true if the attribute was found and 1686 * <var>outValue</var> is valid, else false. 1687 */ 1688 public boolean resolveAttribute(int resid, TypedValue outValue, boolean resolveRefs) { 1689 boolean got = mAssets.getThemeValue(mTheme, resid, outValue, resolveRefs); 1690 if (false) { 1691 System.out.println( 1692 "resolveAttribute #" + Integer.toHexString(resid) 1693 + " got=" + got + ", type=0x" + Integer.toHexString(outValue.type) 1694 + ", data=0x" + Integer.toHexString(outValue.data)); 1695 } 1696 return got; 1697 } 1698 1699 /** 1700 * Gets all of the attribute ids associated with this {@link Theme}. For debugging only. 1701 * 1702 * @return The int array containing attribute ids associated with this {@link Theme}. 1703 * @hide 1704 */ 1705 public int[] getAllAttributes() { 1706 return mAssets.getStyleAttributes(getAppliedStyleResId()); 1707 } 1708 1709 /** 1710 * Returns the resources to which this theme belongs. 1711 * 1712 * @return Resources to which this theme belongs. 1713 */ 1714 public Resources getResources() { 1715 return Resources.this; 1716 } 1717 1718 /** 1719 * Return a drawable object associated with a particular resource ID 1720 * and styled for the Theme. 1721 * 1722 * @param id The desired resource identifier, as generated by the aapt 1723 * tool. This integer encodes the package, type, and resource 1724 * entry. The value 0 is an invalid identifier. 1725 * @return Drawable An object that can be used to draw this resource. 1726 * @throws NotFoundException Throws NotFoundException if the given ID 1727 * does not exist. 1728 */ 1729 public Drawable getDrawable(@DrawableRes int id) throws NotFoundException { 1730 return Resources.this.getDrawable(id, this); 1731 } 1732 1733 /** 1734 * Returns a bit mask of configuration changes that will impact this 1735 * theme (and thus require completely reloading it). 1736 * 1737 * @return a bit mask of configuration changes, as defined by 1738 * {@link ActivityInfo} 1739 * @see ActivityInfo 1740 */ 1741 public int getChangingConfigurations() { 1742 final int nativeChangingConfig = AssetManager.getThemeChangingConfigurations(mTheme); 1743 return ActivityInfo.activityInfoConfigNativeToJava(nativeChangingConfig); 1744 } 1745 1746 /** 1747 * Print contents of this theme out to the log. For debugging only. 1748 * 1749 * @param priority The log priority to use. 1750 * @param tag The log tag to use. 1751 * @param prefix Text to prefix each line printed. 1752 */ 1753 public void dump(int priority, String tag, String prefix) { 1754 AssetManager.dumpTheme(mTheme, priority, tag, prefix); 1755 } 1756 1757 @Override 1758 protected void finalize() throws Throwable { 1759 super.finalize(); 1760 mAssets.releaseTheme(mTheme); 1761 } 1762 1763 /*package*/ Theme() { 1764 mAssets = Resources.this.mAssets; 1765 mTheme = mAssets.createTheme(); 1766 } 1767 1768 @SuppressWarnings("hiding") 1769 private final AssetManager mAssets; 1770 private final long mTheme; 1771 1772 /** Resource identifier for the theme. */ 1773 private int mThemeResId = 0; 1774 1775 /** Unique key for the series of styles applied to this theme. */ 1776 private String mKey = ""; 1777 1778 // Needed by layoutlib. 1779 /*package*/ long getNativeTheme() { 1780 return mTheme; 1781 } 1782 1783 /*package*/ int getAppliedStyleResId() { 1784 return mThemeResId; 1785 } 1786 1787 /*package*/ String getKey() { 1788 return mKey; 1789 } 1790 1791 private String getResourceNameFromHexString(String hexString) { 1792 return getResourceName(Integer.parseInt(hexString, 16)); 1793 } 1794 1795 /** 1796 * Parses {@link #mKey} and returns a String array that holds pairs of adjacent Theme data: 1797 * resource name followed by whether or not it was forced, as specified by 1798 * {@link #applyStyle(int, boolean)}. 1799 * 1800 * @hide 1801 */ 1802 @ViewDebug.ExportedProperty(category = "theme", hasAdjacentMapping = true) 1803 public String[] getTheme() { 1804 String[] themeData = mKey.split(" "); 1805 String[] themes = new String[themeData.length * 2]; 1806 String theme; 1807 boolean forced; 1808 1809 for (int i = 0, j = themeData.length - 1; i < themes.length; i += 2, --j) { 1810 theme = themeData[j]; 1811 forced = theme.endsWith("!"); 1812 themes[i] = forced ? 1813 getResourceNameFromHexString(theme.substring(0, theme.length() - 1)) : 1814 getResourceNameFromHexString(theme); 1815 themes[i + 1] = forced ? "forced" : "not forced"; 1816 } 1817 return themes; 1818 } 1819 } 1820 1821 /** 1822 * Generate a new Theme object for this set of Resources. It initially 1823 * starts out empty. 1824 * 1825 * @return Theme The newly created Theme container. 1826 */ 1827 public final Theme newTheme() { 1828 return new Theme(); 1829 } 1830 1831 /** 1832 * Retrieve a set of basic attribute values from an AttributeSet, not 1833 * performing styling of them using a theme and/or style resources. 1834 * 1835 * @param set The current attribute values to retrieve. 1836 * @param attrs The specific attributes to be retrieved. 1837 * @return Returns a TypedArray holding an array of the attribute values. 1838 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1839 * when done with it. 1840 * 1841 * @see Theme#obtainStyledAttributes(AttributeSet, int[], int, int) 1842 */ 1843 public TypedArray obtainAttributes(AttributeSet set, int[] attrs) { 1844 int len = attrs.length; 1845 TypedArray array = TypedArray.obtain(this, len); 1846 1847 // XXX note that for now we only work with compiled XML files. 1848 // To support generic XML files we will need to manually parse 1849 // out the attributes from the XML file (applying type information 1850 // contained in the resources and such). 1851 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1852 mAssets.retrieveAttributes(parser.mParseState, attrs, 1853 array.mData, array.mIndices); 1854 1855 array.mXml = parser; 1856 1857 return array; 1858 } 1859 1860 /** 1861 * Store the newly updated configuration. 1862 */ 1863 public void updateConfiguration(Configuration config, 1864 DisplayMetrics metrics) { 1865 updateConfiguration(config, metrics, null); 1866 } 1867 1868 /** 1869 * @hide 1870 */ 1871 public void updateConfiguration(Configuration config, 1872 DisplayMetrics metrics, CompatibilityInfo compat) { 1873 synchronized (mAccessLock) { 1874 if (false) { 1875 Slog.i(TAG, "**** Updating config of " + this + ": old config is " 1876 + mConfiguration + " old compat is " + mCompatibilityInfo); 1877 Slog.i(TAG, "**** Updating config of " + this + ": new config is " 1878 + config + " new compat is " + compat); 1879 } 1880 if (compat != null) { 1881 mCompatibilityInfo = compat; 1882 } 1883 if (metrics != null) { 1884 mMetrics.setTo(metrics); 1885 } 1886 // NOTE: We should re-arrange this code to create a Display 1887 // with the CompatibilityInfo that is used everywhere we deal 1888 // with the display in relation to this app, rather than 1889 // doing the conversion here. This impl should be okay because 1890 // we make sure to return a compatible display in the places 1891 // where there are public APIs to retrieve the display... but 1892 // it would be cleaner and more maintainble to just be 1893 // consistently dealing with a compatible display everywhere in 1894 // the framework. 1895 mCompatibilityInfo.applyToDisplayMetrics(mMetrics); 1896 1897 final int configChanges = calcConfigChanges(config); 1898 if (mConfiguration.locale == null) { 1899 mConfiguration.locale = Locale.getDefault(); 1900 mConfiguration.setLayoutDirection(mConfiguration.locale); 1901 } 1902 if (mConfiguration.densityDpi != Configuration.DENSITY_DPI_UNDEFINED) { 1903 mMetrics.densityDpi = mConfiguration.densityDpi; 1904 mMetrics.density = mConfiguration.densityDpi * DisplayMetrics.DENSITY_DEFAULT_SCALE; 1905 } 1906 mMetrics.scaledDensity = mMetrics.density * mConfiguration.fontScale; 1907 1908 String locale = null; 1909 if (mConfiguration.locale != null) { 1910 locale = adjustLanguageTag(mConfiguration.locale.toLanguageTag()); 1911 } 1912 1913 final int width, height; 1914 if (mMetrics.widthPixels >= mMetrics.heightPixels) { 1915 width = mMetrics.widthPixels; 1916 height = mMetrics.heightPixels; 1917 } else { 1918 //noinspection SuspiciousNameCombination 1919 width = mMetrics.heightPixels; 1920 //noinspection SuspiciousNameCombination 1921 height = mMetrics.widthPixels; 1922 } 1923 1924 final int keyboardHidden; 1925 if (mConfiguration.keyboardHidden == Configuration.KEYBOARDHIDDEN_NO 1926 && mConfiguration.hardKeyboardHidden == Configuration.HARDKEYBOARDHIDDEN_YES) { 1927 keyboardHidden = Configuration.KEYBOARDHIDDEN_SOFT; 1928 } else { 1929 keyboardHidden = mConfiguration.keyboardHidden; 1930 } 1931 1932 mAssets.setConfiguration(mConfiguration.mcc, mConfiguration.mnc, 1933 locale, mConfiguration.orientation, 1934 mConfiguration.touchscreen, 1935 mConfiguration.densityDpi, mConfiguration.keyboard, 1936 keyboardHidden, mConfiguration.navigation, width, height, 1937 mConfiguration.smallestScreenWidthDp, 1938 mConfiguration.screenWidthDp, mConfiguration.screenHeightDp, 1939 mConfiguration.screenLayout, mConfiguration.uiMode, 1940 Build.VERSION.RESOURCES_SDK_INT); 1941 1942 if (DEBUG_CONFIG) { 1943 Slog.i(TAG, "**** Updating config of " + this + ": final config is " + mConfiguration 1944 + " final compat is " + mCompatibilityInfo); 1945 } 1946 1947 clearDrawableCachesLocked(mDrawableCache, configChanges); 1948 clearDrawableCachesLocked(mColorDrawableCache, configChanges); 1949 mColorStateListCache.onConfigurationChange(configChanges); 1950 mAnimatorCache.onConfigurationChange(configChanges); 1951 mStateListAnimatorCache.onConfigurationChange(configChanges); 1952 1953 flushLayoutCache(); 1954 } 1955 synchronized (sSync) { 1956 if (mPluralRule != null) { 1957 mPluralRule = NativePluralRules.forLocale(config.locale); 1958 } 1959 } 1960 } 1961 1962 /** 1963 * Called by ConfigurationBoundResourceCacheTest via reflection. 1964 */ 1965 private int calcConfigChanges(Configuration config) { 1966 int configChanges = 0xfffffff; 1967 if (config != null) { 1968 mTmpConfig.setTo(config); 1969 int density = config.densityDpi; 1970 if (density == Configuration.DENSITY_DPI_UNDEFINED) { 1971 density = mMetrics.noncompatDensityDpi; 1972 } 1973 1974 mCompatibilityInfo.applyToConfiguration(density, mTmpConfig); 1975 1976 if (mTmpConfig.locale == null) { 1977 mTmpConfig.locale = Locale.getDefault(); 1978 mTmpConfig.setLayoutDirection(mTmpConfig.locale); 1979 } 1980 configChanges = mConfiguration.updateFrom(mTmpConfig); 1981 configChanges = ActivityInfo.activityInfoConfigToNative(configChanges); 1982 } 1983 return configChanges; 1984 } 1985 1986 private void clearDrawableCachesLocked( 1987 ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches, 1988 int configChanges) { 1989 final int N = caches.size(); 1990 for (int i = 0; i < N; i++) { 1991 clearDrawableCacheLocked(caches.valueAt(i), configChanges); 1992 } 1993 } 1994 1995 private void clearDrawableCacheLocked( 1996 LongSparseArray<WeakReference<ConstantState>> cache, int configChanges) { 1997 if (DEBUG_CONFIG) { 1998 Log.d(TAG, "Cleaning up drawables config changes: 0x" 1999 + Integer.toHexString(configChanges)); 2000 } 2001 final int N = cache.size(); 2002 for (int i = 0; i < N; i++) { 2003 final WeakReference<ConstantState> ref = cache.valueAt(i); 2004 if (ref != null) { 2005 final ConstantState cs = ref.get(); 2006 if (cs != null) { 2007 if (Configuration.needNewResources( 2008 configChanges, cs.getChangingConfigurations())) { 2009 if (DEBUG_CONFIG) { 2010 Log.d(TAG, "FLUSHING #0x" 2011 + Long.toHexString(cache.keyAt(i)) 2012 + " / " + cs + " with changes: 0x" 2013 + Integer.toHexString(cs.getChangingConfigurations())); 2014 } 2015 cache.setValueAt(i, null); 2016 } else if (DEBUG_CONFIG) { 2017 Log.d(TAG, "(Keeping #0x" 2018 + Long.toHexString(cache.keyAt(i)) 2019 + " / " + cs + " with changes: 0x" 2020 + Integer.toHexString(cs.getChangingConfigurations()) 2021 + ")"); 2022 } 2023 } 2024 } 2025 } 2026 } 2027 2028 /** 2029 * {@code Locale.toLanguageTag} will transform the obsolete (and deprecated) 2030 * language codes "in", "ji" and "iw" to "id", "yi" and "he" respectively. 2031 * 2032 * All released versions of android prior to "L" used the deprecated language 2033 * tags, so we will need to support them for backwards compatibility. 2034 * 2035 * Note that this conversion needs to take place *after* the call to 2036 * {@code toLanguageTag} because that will convert all the deprecated codes to 2037 * the new ones, even if they're set manually. 2038 */ 2039 private static String adjustLanguageTag(String languageTag) { 2040 final int separator = languageTag.indexOf('-'); 2041 final String language; 2042 final String remainder; 2043 2044 if (separator == -1) { 2045 language = languageTag; 2046 remainder = ""; 2047 } else { 2048 language = languageTag.substring(0, separator); 2049 remainder = languageTag.substring(separator); 2050 } 2051 2052 return Locale.adjustLanguageCode(language) + remainder; 2053 } 2054 2055 /** 2056 * Update the system resources configuration if they have previously 2057 * been initialized. 2058 * 2059 * @hide 2060 */ 2061 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics, 2062 CompatibilityInfo compat) { 2063 if (mSystem != null) { 2064 mSystem.updateConfiguration(config, metrics, compat); 2065 //Log.i(TAG, "Updated system resources " + mSystem 2066 // + ": " + mSystem.getConfiguration()); 2067 } 2068 } 2069 2070 /** 2071 * Return the current display metrics that are in effect for this resource 2072 * object. The returned object should be treated as read-only. 2073 * 2074 * @return The resource's current display metrics. 2075 */ 2076 public DisplayMetrics getDisplayMetrics() { 2077 if (DEBUG_CONFIG) Slog.v(TAG, "Returning DisplayMetrics: " + mMetrics.widthPixels 2078 + "x" + mMetrics.heightPixels + " " + mMetrics.density); 2079 return mMetrics; 2080 } 2081 2082 /** 2083 * Return the current configuration that is in effect for this resource 2084 * object. The returned object should be treated as read-only. 2085 * 2086 * @return The resource's current configuration. 2087 */ 2088 public Configuration getConfiguration() { 2089 return mConfiguration; 2090 } 2091 2092 /** 2093 * Return the compatibility mode information for the application. 2094 * The returned object should be treated as read-only. 2095 * 2096 * @return compatibility info. 2097 * @hide 2098 */ 2099 public CompatibilityInfo getCompatibilityInfo() { 2100 return mCompatibilityInfo; 2101 } 2102 2103 /** 2104 * This is just for testing. 2105 * @hide 2106 */ 2107 public void setCompatibilityInfo(CompatibilityInfo ci) { 2108 if (ci != null) { 2109 mCompatibilityInfo = ci; 2110 updateConfiguration(mConfiguration, mMetrics); 2111 } 2112 } 2113 2114 /** 2115 * Return a resource identifier for the given resource name. A fully 2116 * qualified resource name is of the form "package:type/entry". The first 2117 * two components (package and type) are optional if defType and 2118 * defPackage, respectively, are specified here. 2119 * 2120 * <p>Note: use of this function is discouraged. It is much more 2121 * efficient to retrieve resources by identifier than by name. 2122 * 2123 * @param name The name of the desired resource. 2124 * @param defType Optional default resource type to find, if "type/" is 2125 * not included in the name. Can be null to require an 2126 * explicit type. 2127 * @param defPackage Optional default package to find, if "package:" is 2128 * not included in the name. Can be null to require an 2129 * explicit package. 2130 * 2131 * @return int The associated resource identifier. Returns 0 if no such 2132 * resource was found. (0 is not a valid resource ID.) 2133 */ 2134 public int getIdentifier(String name, String defType, String defPackage) { 2135 if (name == null) { 2136 throw new NullPointerException("name is null"); 2137 } 2138 try { 2139 return Integer.parseInt(name); 2140 } catch (Exception e) { 2141 // Ignore 2142 } 2143 return mAssets.getResourceIdentifier(name, defType, defPackage); 2144 } 2145 2146 /** 2147 * Return true if given resource identifier includes a package. 2148 * 2149 * @hide 2150 */ 2151 public static boolean resourceHasPackage(@AnyRes int resid) { 2152 return (resid >>> 24) != 0; 2153 } 2154 2155 /** 2156 * Return the full name for a given resource identifier. This name is 2157 * a single string of the form "package:type/entry". 2158 * 2159 * @param resid The resource identifier whose name is to be retrieved. 2160 * 2161 * @return A string holding the name of the resource. 2162 * 2163 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2164 * 2165 * @see #getResourcePackageName 2166 * @see #getResourceTypeName 2167 * @see #getResourceEntryName 2168 */ 2169 public String getResourceName(@AnyRes int resid) throws NotFoundException { 2170 String str = mAssets.getResourceName(resid); 2171 if (str != null) return str; 2172 throw new NotFoundException("Unable to find resource ID #0x" 2173 + Integer.toHexString(resid)); 2174 } 2175 2176 /** 2177 * Return the package name for a given resource identifier. 2178 * 2179 * @param resid The resource identifier whose package name is to be 2180 * retrieved. 2181 * 2182 * @return A string holding the package name of the resource. 2183 * 2184 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2185 * 2186 * @see #getResourceName 2187 */ 2188 public String getResourcePackageName(@AnyRes int resid) throws NotFoundException { 2189 String str = mAssets.getResourcePackageName(resid); 2190 if (str != null) return str; 2191 throw new NotFoundException("Unable to find resource ID #0x" 2192 + Integer.toHexString(resid)); 2193 } 2194 2195 /** 2196 * Return the type name for a given resource identifier. 2197 * 2198 * @param resid The resource identifier whose type name is to be 2199 * retrieved. 2200 * 2201 * @return A string holding the type name of the resource. 2202 * 2203 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2204 * 2205 * @see #getResourceName 2206 */ 2207 public String getResourceTypeName(@AnyRes int resid) throws NotFoundException { 2208 String str = mAssets.getResourceTypeName(resid); 2209 if (str != null) return str; 2210 throw new NotFoundException("Unable to find resource ID #0x" 2211 + Integer.toHexString(resid)); 2212 } 2213 2214 /** 2215 * Return the entry name for a given resource identifier. 2216 * 2217 * @param resid The resource identifier whose entry name is to be 2218 * retrieved. 2219 * 2220 * @return A string holding the entry name of the resource. 2221 * 2222 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2223 * 2224 * @see #getResourceName 2225 */ 2226 public String getResourceEntryName(@AnyRes int resid) throws NotFoundException { 2227 String str = mAssets.getResourceEntryName(resid); 2228 if (str != null) return str; 2229 throw new NotFoundException("Unable to find resource ID #0x" 2230 + Integer.toHexString(resid)); 2231 } 2232 2233 /** 2234 * Parse a series of {@link android.R.styleable#Extra <extra>} tags from 2235 * an XML file. You call this when you are at the parent tag of the 2236 * extra tags, and it will return once all of the child tags have been parsed. 2237 * This will call {@link #parseBundleExtra} for each extra tag encountered. 2238 * 2239 * @param parser The parser from which to retrieve the extras. 2240 * @param outBundle A Bundle in which to place all parsed extras. 2241 * @throws XmlPullParserException 2242 * @throws IOException 2243 */ 2244 public void parseBundleExtras(XmlResourceParser parser, Bundle outBundle) 2245 throws XmlPullParserException, IOException { 2246 int outerDepth = parser.getDepth(); 2247 int type; 2248 while ((type=parser.next()) != XmlPullParser.END_DOCUMENT 2249 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 2250 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 2251 continue; 2252 } 2253 2254 String nodeName = parser.getName(); 2255 if (nodeName.equals("extra")) { 2256 parseBundleExtra("extra", parser, outBundle); 2257 XmlUtils.skipCurrentTag(parser); 2258 2259 } else { 2260 XmlUtils.skipCurrentTag(parser); 2261 } 2262 } 2263 } 2264 2265 /** 2266 * Parse a name/value pair out of an XML tag holding that data. The 2267 * AttributeSet must be holding the data defined by 2268 * {@link android.R.styleable#Extra}. The following value types are supported: 2269 * <ul> 2270 * <li> {@link TypedValue#TYPE_STRING}: 2271 * {@link Bundle#putCharSequence Bundle.putCharSequence()} 2272 * <li> {@link TypedValue#TYPE_INT_BOOLEAN}: 2273 * {@link Bundle#putCharSequence Bundle.putBoolean()} 2274 * <li> {@link TypedValue#TYPE_FIRST_INT}-{@link TypedValue#TYPE_LAST_INT}: 2275 * {@link Bundle#putCharSequence Bundle.putBoolean()} 2276 * <li> {@link TypedValue#TYPE_FLOAT}: 2277 * {@link Bundle#putCharSequence Bundle.putFloat()} 2278 * </ul> 2279 * 2280 * @param tagName The name of the tag these attributes come from; this is 2281 * only used for reporting error messages. 2282 * @param attrs The attributes from which to retrieve the name/value pair. 2283 * @param outBundle The Bundle in which to place the parsed value. 2284 * @throws XmlPullParserException If the attributes are not valid. 2285 */ 2286 public void parseBundleExtra(String tagName, AttributeSet attrs, 2287 Bundle outBundle) throws XmlPullParserException { 2288 TypedArray sa = obtainAttributes(attrs, 2289 com.android.internal.R.styleable.Extra); 2290 2291 String name = sa.getString( 2292 com.android.internal.R.styleable.Extra_name); 2293 if (name == null) { 2294 sa.recycle(); 2295 throw new XmlPullParserException("<" + tagName 2296 + "> requires an android:name attribute at " 2297 + attrs.getPositionDescription()); 2298 } 2299 2300 TypedValue v = sa.peekValue( 2301 com.android.internal.R.styleable.Extra_value); 2302 if (v != null) { 2303 if (v.type == TypedValue.TYPE_STRING) { 2304 CharSequence cs = v.coerceToString(); 2305 outBundle.putCharSequence(name, cs); 2306 } else if (v.type == TypedValue.TYPE_INT_BOOLEAN) { 2307 outBundle.putBoolean(name, v.data != 0); 2308 } else if (v.type >= TypedValue.TYPE_FIRST_INT 2309 && v.type <= TypedValue.TYPE_LAST_INT) { 2310 outBundle.putInt(name, v.data); 2311 } else if (v.type == TypedValue.TYPE_FLOAT) { 2312 outBundle.putFloat(name, v.getFloat()); 2313 } else { 2314 sa.recycle(); 2315 throw new XmlPullParserException("<" + tagName 2316 + "> only supports string, integer, float, color, and boolean at " 2317 + attrs.getPositionDescription()); 2318 } 2319 } else { 2320 sa.recycle(); 2321 throw new XmlPullParserException("<" + tagName 2322 + "> requires an android:value or android:resource attribute at " 2323 + attrs.getPositionDescription()); 2324 } 2325 2326 sa.recycle(); 2327 } 2328 2329 /** 2330 * Retrieve underlying AssetManager storage for these resources. 2331 */ 2332 public final AssetManager getAssets() { 2333 return mAssets; 2334 } 2335 2336 /** 2337 * Call this to remove all cached loaded layout resources from the 2338 * Resources object. Only intended for use with performance testing 2339 * tools. 2340 */ 2341 public final void flushLayoutCache() { 2342 synchronized (mCachedXmlBlockIds) { 2343 // First see if this block is in our cache. 2344 final int num = mCachedXmlBlockIds.length; 2345 for (int i=0; i<num; i++) { 2346 mCachedXmlBlockIds[i] = -0; 2347 XmlBlock oldBlock = mCachedXmlBlocks[i]; 2348 if (oldBlock != null) { 2349 oldBlock.close(); 2350 } 2351 mCachedXmlBlocks[i] = null; 2352 } 2353 } 2354 } 2355 2356 /** 2357 * Start preloading of resource data using this Resources object. Only 2358 * for use by the zygote process for loading common system resources. 2359 * {@hide} 2360 */ 2361 public final void startPreloading() { 2362 synchronized (sSync) { 2363 if (sPreloaded) { 2364 throw new IllegalStateException("Resources already preloaded"); 2365 } 2366 sPreloaded = true; 2367 mPreloading = true; 2368 sPreloadedDensity = DisplayMetrics.DENSITY_DEVICE; 2369 mConfiguration.densityDpi = sPreloadedDensity; 2370 updateConfiguration(null, null); 2371 } 2372 } 2373 2374 /** 2375 * Called by zygote when it is done preloading resources, to change back 2376 * to normal Resources operation. 2377 */ 2378 public final void finishPreloading() { 2379 if (mPreloading) { 2380 mPreloading = false; 2381 flushLayoutCache(); 2382 } 2383 } 2384 2385 /** 2386 * @hide 2387 */ 2388 public LongSparseArray<ConstantState> getPreloadedDrawables() { 2389 return sPreloadedDrawables[0]; 2390 } 2391 2392 private boolean verifyPreloadConfig(int changingConfigurations, int allowVarying, 2393 int resourceId, String name) { 2394 // We allow preloading of resources even if they vary by font scale (which 2395 // doesn't impact resource selection) or density (which we handle specially by 2396 // simply turning off all preloading), as well as any other configs specified 2397 // by the caller. 2398 if (((changingConfigurations&~(ActivityInfo.CONFIG_FONT_SCALE | 2399 ActivityInfo.CONFIG_DENSITY)) & ~allowVarying) != 0) { 2400 String resName; 2401 try { 2402 resName = getResourceName(resourceId); 2403 } catch (NotFoundException e) { 2404 resName = "?"; 2405 } 2406 // This should never happen in production, so we should log a 2407 // warning even if we're not debugging. 2408 Log.w(TAG, "Preloaded " + name + " resource #0x" 2409 + Integer.toHexString(resourceId) 2410 + " (" + resName + ") that varies with configuration!!"); 2411 return false; 2412 } 2413 if (TRACE_FOR_PRELOAD) { 2414 String resName; 2415 try { 2416 resName = getResourceName(resourceId); 2417 } catch (NotFoundException e) { 2418 resName = "?"; 2419 } 2420 Log.w(TAG, "Preloading " + name + " resource #0x" 2421 + Integer.toHexString(resourceId) 2422 + " (" + resName + ")"); 2423 } 2424 return true; 2425 } 2426 2427 /*package*/ Drawable loadDrawable(TypedValue value, int id, Theme theme) throws NotFoundException { 2428 if (TRACE_FOR_PRELOAD) { 2429 // Log only framework resources 2430 if ((id >>> 24) == 0x1) { 2431 final String name = getResourceName(id); 2432 if (name != null) { 2433 Log.d("PreloadDrawable", name); 2434 } 2435 } 2436 } 2437 2438 final boolean isColorDrawable; 2439 final ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches; 2440 final long key; 2441 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT 2442 && value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2443 isColorDrawable = true; 2444 caches = mColorDrawableCache; 2445 key = value.data; 2446 } else { 2447 isColorDrawable = false; 2448 caches = mDrawableCache; 2449 key = (((long) value.assetCookie) << 32) | value.data; 2450 } 2451 2452 // First, check whether we have a cached version of this drawable 2453 // that was inflated against the specified theme. 2454 if (!mPreloading) { 2455 final Drawable cachedDrawable = getCachedDrawable(caches, key, theme); 2456 if (cachedDrawable != null) { 2457 return cachedDrawable; 2458 } 2459 } 2460 2461 // Next, check preloaded drawables. These may contain unresolved theme 2462 // attributes. 2463 final ConstantState cs; 2464 if (isColorDrawable) { 2465 cs = sPreloadedColorDrawables.get(key); 2466 } else { 2467 cs = sPreloadedDrawables[mConfiguration.getLayoutDirection()].get(key); 2468 } 2469 2470 Drawable dr; 2471 if (cs != null) { 2472 dr = cs.newDrawable(this); 2473 } else if (isColorDrawable) { 2474 dr = new ColorDrawable(value.data); 2475 } else { 2476 dr = loadDrawableForCookie(value, id, null); 2477 } 2478 2479 // Determine if the drawable has unresolved theme attributes. If it 2480 // does, we'll need to apply a theme and store it in a theme-specific 2481 // cache. 2482 final String cacheKey; 2483 if (!dr.canApplyTheme()) { 2484 cacheKey = CACHE_NOT_THEMED; 2485 } else if (theme == null) { 2486 cacheKey = CACHE_NULL_THEME; 2487 } else { 2488 cacheKey = theme.getKey(); 2489 dr = dr.mutate(); 2490 dr.applyTheme(theme); 2491 dr.clearMutated(); 2492 } 2493 2494 // If we were able to obtain a drawable, store it in the appropriate 2495 // cache: preload, not themed, null theme, or theme-specific. 2496 if (dr != null) { 2497 dr.setChangingConfigurations(value.changingConfigurations); 2498 cacheDrawable(value, isColorDrawable, caches, cacheKey, key, dr); 2499 } 2500 2501 return dr; 2502 } 2503 2504 private void cacheDrawable(TypedValue value, boolean isColorDrawable, 2505 ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches, 2506 String cacheKey, long key, Drawable dr) { 2507 final ConstantState cs = dr.getConstantState(); 2508 if (cs == null) { 2509 return; 2510 } 2511 2512 if (mPreloading) { 2513 final int changingConfigs = cs.getChangingConfigurations(); 2514 if (isColorDrawable) { 2515 if (verifyPreloadConfig(changingConfigs, 0, value.resourceId, "drawable")) { 2516 sPreloadedColorDrawables.put(key, cs); 2517 } 2518 } else { 2519 if (verifyPreloadConfig( 2520 changingConfigs, LAYOUT_DIR_CONFIG, value.resourceId, "drawable")) { 2521 if ((changingConfigs & LAYOUT_DIR_CONFIG) == 0) { 2522 // If this resource does not vary based on layout direction, 2523 // we can put it in all of the preload maps. 2524 sPreloadedDrawables[0].put(key, cs); 2525 sPreloadedDrawables[1].put(key, cs); 2526 } else { 2527 // Otherwise, only in the layout dir we loaded it for. 2528 sPreloadedDrawables[mConfiguration.getLayoutDirection()].put(key, cs); 2529 } 2530 } 2531 } 2532 } else { 2533 synchronized (mAccessLock) { 2534 LongSparseArray<WeakReference<ConstantState>> themedCache = caches.get(cacheKey); 2535 if (themedCache == null) { 2536 // Clean out the caches before we add more. This shouldn't 2537 // happen very often. 2538 pruneCaches(caches); 2539 themedCache = new LongSparseArray<>(1); 2540 caches.put(cacheKey, themedCache); 2541 } 2542 themedCache.put(key, new WeakReference<>(cs)); 2543 } 2544 } 2545 } 2546 2547 /** 2548 * Prunes empty caches from the cache map. 2549 * 2550 * @param caches The map of caches to prune. 2551 */ 2552 private void pruneCaches(ArrayMap<String, 2553 LongSparseArray<WeakReference<ConstantState>>> caches) { 2554 final int N = caches.size(); 2555 for (int i = N - 1; i >= 0; i--) { 2556 final LongSparseArray<WeakReference<ConstantState>> cache = caches.valueAt(i); 2557 if (pruneCache(cache)) { 2558 caches.removeAt(i); 2559 } 2560 } 2561 } 2562 2563 /** 2564 * Prunes obsolete weak references from a cache, returning {@code true} if 2565 * the cache is empty and should be removed. 2566 * 2567 * @param cache The cache of weak references to prune. 2568 * @return {@code true} if the cache is empty and should be removed. 2569 */ 2570 private boolean pruneCache(LongSparseArray<WeakReference<ConstantState>> cache) { 2571 final int N = cache.size(); 2572 for (int i = N - 1; i >= 0; i--) { 2573 final WeakReference entry = cache.valueAt(i); 2574 if (entry == null || entry.get() == null) { 2575 cache.removeAt(i); 2576 } 2577 } 2578 return cache.size() == 0; 2579 } 2580 2581 /** 2582 * Loads a drawable from XML or resources stream. 2583 */ 2584 private Drawable loadDrawableForCookie(TypedValue value, int id, Theme theme) { 2585 if (value.string == null) { 2586 throw new NotFoundException("Resource \"" + getResourceName(id) + "\" (" 2587 + Integer.toHexString(id) + ") is not a Drawable (color or path): " + value); 2588 } 2589 2590 final String file = value.string.toString(); 2591 2592 if (TRACE_FOR_MISS_PRELOAD) { 2593 // Log only framework resources 2594 if ((id >>> 24) == 0x1) { 2595 final String name = getResourceName(id); 2596 if (name != null) { 2597 Log.d(TAG, "Loading framework drawable #" + Integer.toHexString(id) 2598 + ": " + name + " at " + file); 2599 } 2600 } 2601 } 2602 2603 if (DEBUG_LOAD) { 2604 Log.v(TAG, "Loading drawable for cookie " + value.assetCookie + ": " + file); 2605 } 2606 2607 final Drawable dr; 2608 2609 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 2610 try { 2611 if (file.endsWith(".xml")) { 2612 final XmlResourceParser rp = loadXmlResourceParser( 2613 file, id, value.assetCookie, "drawable"); 2614 dr = Drawable.createFromXml(this, rp, theme); 2615 rp.close(); 2616 } else { 2617 final InputStream is = mAssets.openNonAsset( 2618 value.assetCookie, file, AssetManager.ACCESS_STREAMING); 2619 dr = Drawable.createFromResourceStream(this, value, is, file, null); 2620 is.close(); 2621 } 2622 } catch (Exception e) { 2623 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2624 final NotFoundException rnf = new NotFoundException( 2625 "File " + file + " from drawable resource ID #0x" + Integer.toHexString(id)); 2626 rnf.initCause(e); 2627 throw rnf; 2628 } 2629 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2630 2631 return dr; 2632 } 2633 2634 private Drawable getCachedDrawable( 2635 ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches, 2636 long key, Theme theme) { 2637 synchronized (mAccessLock) { 2638 // First search theme-agnostic cache. 2639 final Drawable unthemedDrawable = getCachedDrawableLocked( 2640 caches, key, CACHE_NOT_THEMED); 2641 if (unthemedDrawable != null) { 2642 return unthemedDrawable; 2643 } 2644 2645 // Next search theme-specific cache. 2646 final String themeKey = theme != null ? theme.getKey() : CACHE_NULL_THEME; 2647 return getCachedDrawableLocked(caches, key, themeKey); 2648 } 2649 } 2650 2651 private Drawable getCachedDrawableLocked( 2652 ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches, 2653 long key, String themeKey) { 2654 final LongSparseArray<WeakReference<ConstantState>> cache = caches.get(themeKey); 2655 if (cache != null) { 2656 final ConstantState entry = getConstantStateLocked(cache, key); 2657 if (entry != null) { 2658 return entry.newDrawable(this); 2659 } 2660 } 2661 return null; 2662 } 2663 2664 private ConstantState getConstantStateLocked( 2665 LongSparseArray<WeakReference<ConstantState>> drawableCache, long key) { 2666 final WeakReference<ConstantState> wr = drawableCache.get(key); 2667 if (wr != null) { 2668 final ConstantState entry = wr.get(); 2669 if (entry != null) { 2670 return entry; 2671 } else { 2672 // Our entry has been purged. 2673 drawableCache.delete(key); 2674 } 2675 } 2676 return null; 2677 } 2678 2679 @Nullable 2680 ColorStateList loadColorStateList(TypedValue value, int id, Theme theme) 2681 throws NotFoundException { 2682 if (TRACE_FOR_PRELOAD) { 2683 // Log only framework resources 2684 if ((id >>> 24) == 0x1) { 2685 final String name = getResourceName(id); 2686 if (name != null) android.util.Log.d("PreloadColorStateList", name); 2687 } 2688 } 2689 2690 final long key = (((long) value.assetCookie) << 32) | value.data; 2691 2692 ColorStateList csl; 2693 2694 // Handle inline color definitions. 2695 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT 2696 && value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2697 final android.content.res.ConstantState<ColorStateList> factory = 2698 sPreloadedColorStateLists.get(key); 2699 if (factory != null) { 2700 return factory.newInstance(); 2701 } 2702 2703 csl = ColorStateList.valueOf(value.data); 2704 2705 if (mPreloading) { 2706 if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId, 2707 "color")) { 2708 sPreloadedColorStateLists.put(key, csl.getConstantState()); 2709 } 2710 } 2711 2712 return csl; 2713 } 2714 2715 final ConfigurationBoundResourceCache<ColorStateList> cache = mColorStateListCache; 2716 2717 csl = cache.get(key, theme); 2718 if (csl != null) { 2719 return csl; 2720 } 2721 2722 final android.content.res.ConstantState<ColorStateList> factory = 2723 sPreloadedColorStateLists.get(key); 2724 if (factory != null) { 2725 csl = factory.newInstance(this, theme); 2726 } 2727 2728 if (csl == null) { 2729 csl = loadColorStateListForCookie(value, id, theme); 2730 } 2731 2732 if (csl != null) { 2733 if (mPreloading) { 2734 if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId, 2735 "color")) { 2736 sPreloadedColorStateLists.put(key, csl.getConstantState()); 2737 } 2738 } else { 2739 cache.put(key, theme, csl.getConstantState()); 2740 } 2741 } 2742 2743 return csl; 2744 } 2745 2746 private ColorStateList loadColorStateListForCookie(TypedValue value, int id, Theme theme) { 2747 if (value.string == null) { 2748 throw new UnsupportedOperationException( 2749 "Can't convert to color state list: type=0x" + value.type); 2750 } 2751 2752 final String file = value.string.toString(); 2753 2754 if (TRACE_FOR_MISS_PRELOAD) { 2755 // Log only framework resources 2756 if ((id >>> 24) == 0x1) { 2757 final String name = getResourceName(id); 2758 if (name != null) { 2759 Log.d(TAG, "Loading framework color state list #" + Integer.toHexString(id) 2760 + ": " + name + " at " + file); 2761 } 2762 } 2763 } 2764 2765 if (DEBUG_LOAD) { 2766 Log.v(TAG, "Loading color state list for cookie " + value.assetCookie + ": " + file); 2767 } 2768 2769 final ColorStateList csl; 2770 2771 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 2772 if (file.endsWith(".xml")) { 2773 try { 2774 final XmlResourceParser rp = loadXmlResourceParser( 2775 file, id, value.assetCookie, "colorstatelist"); 2776 csl = ColorStateList.createFromXml(this, rp, theme); 2777 rp.close(); 2778 } catch (Exception e) { 2779 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2780 final NotFoundException rnf = new NotFoundException( 2781 "File " + file + " from color state list resource ID #0x" 2782 + Integer.toHexString(id)); 2783 rnf.initCause(e); 2784 throw rnf; 2785 } 2786 } else { 2787 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2788 throw new NotFoundException( 2789 "File " + file + " from drawable resource ID #0x" 2790 + Integer.toHexString(id) + ": .xml extension required"); 2791 } 2792 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2793 2794 return csl; 2795 } 2796 2797 /*package*/ XmlResourceParser loadXmlResourceParser(int id, String type) 2798 throws NotFoundException { 2799 synchronized (mAccessLock) { 2800 TypedValue value = mTmpValue; 2801 if (value == null) { 2802 mTmpValue = value = new TypedValue(); 2803 } 2804 getValue(id, value, true); 2805 if (value.type == TypedValue.TYPE_STRING) { 2806 return loadXmlResourceParser(value.string.toString(), id, 2807 value.assetCookie, type); 2808 } 2809 throw new NotFoundException( 2810 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 2811 + Integer.toHexString(value.type) + " is not valid"); 2812 } 2813 } 2814 2815 /*package*/ XmlResourceParser loadXmlResourceParser(String file, int id, 2816 int assetCookie, String type) throws NotFoundException { 2817 if (id != 0) { 2818 try { 2819 // These may be compiled... 2820 synchronized (mCachedXmlBlockIds) { 2821 // First see if this block is in our cache. 2822 final int num = mCachedXmlBlockIds.length; 2823 for (int i=0; i<num; i++) { 2824 if (mCachedXmlBlockIds[i] == id) { 2825 //System.out.println("**** REUSING XML BLOCK! id=" 2826 // + id + ", index=" + i); 2827 return mCachedXmlBlocks[i].newParser(); 2828 } 2829 } 2830 2831 // Not in the cache, create a new block and put it at 2832 // the next slot in the cache. 2833 XmlBlock block = mAssets.openXmlBlockAsset( 2834 assetCookie, file); 2835 if (block != null) { 2836 int pos = mLastCachedXmlBlockIndex+1; 2837 if (pos >= num) pos = 0; 2838 mLastCachedXmlBlockIndex = pos; 2839 XmlBlock oldBlock = mCachedXmlBlocks[pos]; 2840 if (oldBlock != null) { 2841 oldBlock.close(); 2842 } 2843 mCachedXmlBlockIds[pos] = id; 2844 mCachedXmlBlocks[pos] = block; 2845 //System.out.println("**** CACHING NEW XML BLOCK! id=" 2846 // + id + ", index=" + pos); 2847 return block.newParser(); 2848 } 2849 } 2850 } catch (Exception e) { 2851 NotFoundException rnf = new NotFoundException( 2852 "File " + file + " from xml type " + type + " resource ID #0x" 2853 + Integer.toHexString(id)); 2854 rnf.initCause(e); 2855 throw rnf; 2856 } 2857 } 2858 2859 throw new NotFoundException( 2860 "File " + file + " from xml type " + type + " resource ID #0x" 2861 + Integer.toHexString(id)); 2862 } 2863 2864 /** 2865 * Obtains styled attributes from the theme, if available, or unstyled 2866 * resources if the theme is null. 2867 * 2868 * @hide 2869 */ 2870 public static TypedArray obtainAttributes( 2871 Resources res, Theme theme, AttributeSet set, int[] attrs) { 2872 if (theme == null) { 2873 return res.obtainAttributes(set, attrs); 2874 } 2875 return theme.obtainStyledAttributes(set, attrs, 0, 0); 2876 } 2877 2878 private Resources() { 2879 mAssets = AssetManager.getSystem(); 2880 // NOTE: Intentionally leaving this uninitialized (all values set 2881 // to zero), so that anyone who tries to do something that requires 2882 // metrics will get a very wrong value. 2883 mConfiguration.setToDefaults(); 2884 mMetrics.setToDefaults(); 2885 updateConfiguration(null, null); 2886 mAssets.ensureStringBlocks(); 2887 } 2888} 2889