Resources.java revision 08c7116ab9cd04ad6dd3c04aa1017237e7f409ac
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 com.android.internal.util.XmlUtils; 20 21import org.xmlpull.v1.XmlPullParser; 22import org.xmlpull.v1.XmlPullParserException; 23 24import android.animation.Animator; 25import android.animation.StateListAnimator; 26import android.annotation.AnimRes; 27import android.annotation.AnyRes; 28import android.annotation.ArrayRes; 29import android.annotation.BoolRes; 30import android.annotation.ColorRes; 31import android.annotation.DimenRes; 32import android.annotation.DrawableRes; 33import android.annotation.FractionRes; 34import android.annotation.IntegerRes; 35import android.annotation.LayoutRes; 36import android.annotation.NonNull; 37import android.annotation.Nullable; 38import android.annotation.PluralsRes; 39import android.annotation.RawRes; 40import android.annotation.StringRes; 41import android.annotation.XmlRes; 42import android.content.pm.ActivityInfo; 43import android.content.res.ColorStateList.ColorStateListFactory; 44import android.graphics.Movie; 45import android.graphics.drawable.ColorDrawable; 46import android.graphics.drawable.Drawable; 47import android.graphics.drawable.Drawable.ConstantState; 48import android.os.Build; 49import android.os.Bundle; 50import android.os.Trace; 51import android.util.ArrayMap; 52import android.util.AttributeSet; 53import android.util.DisplayMetrics; 54import android.util.Log; 55import android.util.LongSparseArray; 56import android.util.Pools.SynchronizedPool; 57import android.util.Slog; 58import android.util.TypedValue; 59import android.view.ViewDebug; 60 61import java.io.IOException; 62import java.io.InputStream; 63import java.lang.ref.WeakReference; 64import java.util.Locale; 65 66import libcore.icu.NativePluralRules; 67 68/** 69 * Class for accessing an application's resources. This sits on top of the 70 * asset manager of the application (accessible through {@link #getAssets}) and 71 * provides a high-level API for getting typed data from the assets. 72 * 73 * <p>The Android resource system keeps track of all non-code assets associated with an 74 * application. You can use this class to access your application's resources. You can generally 75 * acquire the {@link android.content.res.Resources} instance associated with your application 76 * with {@link android.content.Context#getResources getResources()}.</p> 77 * 78 * <p>The Android SDK tools compile your application's resources into the application binary 79 * at build time. To use a resource, you must install it correctly in the source tree (inside 80 * your project's {@code res/} directory) and build your application. As part of the build 81 * process, the SDK tools generate symbols for each resource, which you can use in your application 82 * code to access the resources.</p> 83 * 84 * <p>Using application resources makes it easy to update various characteristics of your 85 * application without modifying code, and—by providing sets of alternative 86 * resources—enables you to optimize your application for a variety of device configurations 87 * (such as for different languages and screen sizes). This is an important aspect of developing 88 * Android applications that are compatible on different types of devices.</p> 89 * 90 * <p>For more information about using resources, see the documentation about <a 91 * href="{@docRoot}guide/topics/resources/index.html">Application Resources</a>.</p> 92 */ 93public class Resources { 94 static final String TAG = "Resources"; 95 96 private static final boolean DEBUG_LOAD = false; 97 private static final boolean DEBUG_CONFIG = false; 98 private static final boolean TRACE_FOR_PRELOAD = false; 99 private static final boolean TRACE_FOR_MISS_PRELOAD = false; 100 101 private static final int LAYOUT_DIR_CONFIG = ActivityInfo.activityInfoConfigToNative( 102 ActivityInfo.CONFIG_LAYOUT_DIRECTION); 103 104 private static final int ID_OTHER = 0x01000004; 105 106 private static final Object sSync = new Object(); 107 108 // Information about preloaded resources. Note that they are not 109 // protected by a lock, because while preloading in zygote we are all 110 // single-threaded, and after that these are immutable. 111 private static final LongSparseArray<ConstantState>[] sPreloadedDrawables; 112 private static final LongSparseArray<ConstantState> sPreloadedColorDrawables 113 = new LongSparseArray<ConstantState>(); 114 private static final LongSparseArray<ColorStateListFactory> sPreloadedColorStateLists 115 = new LongSparseArray<ColorStateListFactory>(); 116 117 // Pool of TypedArrays targeted to this Resources object. 118 final SynchronizedPool<TypedArray> mTypedArrayPool = new SynchronizedPool<TypedArray>(5); 119 120 // Used by BridgeResources in layoutlib 121 static Resources mSystem = null; 122 123 private static boolean sPreloaded; 124 private static int sPreloadedDensity; 125 126 // These are protected by mAccessLock. 127 private final Object mAccessLock = new Object(); 128 private final Configuration mTmpConfig = new Configuration(); 129 private final ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> mDrawableCache = 130 new ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>>(); 131 private final ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> mColorDrawableCache = 132 new ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>>(); 133 private final ConfigurationBoundResourceCache<ColorStateList> mColorStateListCache = 134 new ConfigurationBoundResourceCache<ColorStateList>(this); 135 private final ConfigurationBoundResourceCache<Animator> mAnimatorCache = 136 new ConfigurationBoundResourceCache<Animator>(this); 137 private final ConfigurationBoundResourceCache<StateListAnimator> mStateListAnimatorCache = 138 new ConfigurationBoundResourceCache<StateListAnimator>(this); 139 140 private TypedValue mTmpValue = new TypedValue(); 141 private boolean mPreloading; 142 143 private TypedArray mCachedStyledAttributes = null; 144 145 private int mLastCachedXmlBlockIndex = -1; 146 private final int[] mCachedXmlBlockIds = { 0, 0, 0, 0 }; 147 private final XmlBlock[] mCachedXmlBlocks = new XmlBlock[4]; 148 149 final AssetManager mAssets; 150 final DisplayMetrics mMetrics = new DisplayMetrics(); 151 152 private final Configuration mConfiguration = new Configuration(); 153 private NativePluralRules mPluralRule; 154 155 private CompatibilityInfo mCompatibilityInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 156 157 static { 158 sPreloadedDrawables = new LongSparseArray[2]; 159 sPreloadedDrawables[0] = new LongSparseArray<ConstantState>(); 160 sPreloadedDrawables[1] = new LongSparseArray<ConstantState>(); 161 } 162 163 /** 164 * Returns the most appropriate default theme for the specified target SDK version. 165 * <ul> 166 * <li>Below API 11: Gingerbread 167 * <li>APIs 11 thru 14: Holo 168 * <li>APIs 14 thru XX: Device default dark 169 * <li>API XX and above: Device default light with dark action bar 170 * </ul> 171 * 172 * @param curTheme The current theme, or 0 if not specified. 173 * @param targetSdkVersion The target SDK version. 174 * @return A theme resource identifier 175 * @hide 176 */ 177 public static int selectDefaultTheme(int curTheme, int targetSdkVersion) { 178 return selectSystemTheme(curTheme, targetSdkVersion, 179 com.android.internal.R.style.Theme, 180 com.android.internal.R.style.Theme_Holo, 181 com.android.internal.R.style.Theme_DeviceDefault, 182 com.android.internal.R.style.Theme_DeviceDefault_Light_DarkActionBar); 183 } 184 185 /** @hide */ 186 public static int selectSystemTheme(int curTheme, int targetSdkVersion, int orig, int holo, 187 int dark, int deviceDefault) { 188 if (curTheme != 0) { 189 return curTheme; 190 } 191 if (targetSdkVersion < Build.VERSION_CODES.HONEYCOMB) { 192 return orig; 193 } 194 if (targetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 195 return holo; 196 } 197 if (targetSdkVersion < Build.VERSION_CODES.CUR_DEVELOPMENT) { 198 return dark; 199 } 200 return deviceDefault; 201 } 202 203 /** 204 * Used by AnimatorInflater. 205 * 206 * @hide 207 */ 208 public ConfigurationBoundResourceCache<Animator> getAnimatorCache() { 209 return mAnimatorCache; 210 } 211 212 /** 213 * Used by AnimatorInflater. 214 * 215 * @hide 216 */ 217 public ConfigurationBoundResourceCache<StateListAnimator> getStateListAnimatorCache() { 218 return mStateListAnimatorCache; 219 } 220 221 /** 222 * This exception is thrown by the resource APIs when a requested resource 223 * can not be found. 224 */ 225 public static class NotFoundException extends RuntimeException { 226 public NotFoundException() { 227 } 228 229 public NotFoundException(String name) { 230 super(name); 231 } 232 } 233 234 /** 235 * Create a new Resources object on top of an existing set of assets in an 236 * AssetManager. 237 * 238 * @param assets Previously created AssetManager. 239 * @param metrics Current display metrics to consider when 240 * selecting/computing resource values. 241 * @param config Desired device configuration to consider when 242 * selecting/computing resource values (optional). 243 */ 244 public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config) { 245 this(assets, metrics, config, CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO); 246 } 247 248 /** 249 * Creates a new Resources object with CompatibilityInfo. 250 * 251 * @param assets Previously created AssetManager. 252 * @param metrics Current display metrics to consider when 253 * selecting/computing resource values. 254 * @param config Desired device configuration to consider when 255 * selecting/computing resource values (optional). 256 * @param compatInfo this resource's compatibility info. Must not be null. 257 * @hide 258 */ 259 public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config, 260 CompatibilityInfo compatInfo) { 261 mAssets = assets; 262 mMetrics.setToDefaults(); 263 if (compatInfo != null) { 264 mCompatibilityInfo = compatInfo; 265 } 266 updateConfiguration(config, metrics); 267 assets.ensureStringBlocks(); 268 } 269 270 /** 271 * Return a global shared Resources object that provides access to only 272 * system resources (no application resources), and is not configured for 273 * the current screen (can not use dimension units, does not change based 274 * on orientation, etc). 275 */ 276 public static Resources getSystem() { 277 synchronized (sSync) { 278 Resources ret = mSystem; 279 if (ret == null) { 280 ret = new Resources(); 281 mSystem = ret; 282 } 283 284 return ret; 285 } 286 } 287 288 /** 289 * Return the string value associated with a particular resource ID. The 290 * returned object will be a String if this is a plain string; it will be 291 * some other type of CharSequence if it is styled. 292 * {@more} 293 * 294 * @param id The desired resource identifier, as generated by the aapt 295 * tool. This integer encodes the package, type, and resource 296 * entry. The value 0 is an invalid identifier. 297 * 298 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 299 * 300 * @return CharSequence The string data associated with the resource, plus 301 * possibly styled text information. 302 */ 303 public CharSequence getText(@StringRes int id) throws NotFoundException { 304 CharSequence res = mAssets.getResourceText(id); 305 if (res != null) { 306 return res; 307 } 308 throw new NotFoundException("String resource ID #0x" 309 + Integer.toHexString(id)); 310 } 311 312 /** 313 * Returns the character sequence necessary for grammatically correct pluralization 314 * of the given resource ID for the given quantity. 315 * Note that the character sequence is selected based solely on grammatical necessity, 316 * and that such rules differ between languages. Do not assume you know which string 317 * will be returned for a given quantity. See 318 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 319 * for more detail. 320 * 321 * @param id The desired resource identifier, as generated by the aapt 322 * tool. This integer encodes the package, type, and resource 323 * entry. The value 0 is an invalid identifier. 324 * @param quantity The number used to get the correct string for the current language's 325 * plural rules. 326 * 327 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 328 * 329 * @return CharSequence The string data associated with the resource, plus 330 * possibly styled text information. 331 */ 332 public CharSequence getQuantityText(@PluralsRes int id, int quantity) 333 throws NotFoundException { 334 NativePluralRules rule = getPluralRule(); 335 CharSequence res = mAssets.getResourceBagText(id, 336 attrForQuantityCode(rule.quantityForInt(quantity))); 337 if (res != null) { 338 return res; 339 } 340 res = mAssets.getResourceBagText(id, ID_OTHER); 341 if (res != null) { 342 return res; 343 } 344 throw new NotFoundException("Plural resource ID #0x" + Integer.toHexString(id) 345 + " quantity=" + quantity 346 + " item=" + stringForQuantityCode(rule.quantityForInt(quantity))); 347 } 348 349 private NativePluralRules getPluralRule() { 350 synchronized (sSync) { 351 if (mPluralRule == null) { 352 mPluralRule = NativePluralRules.forLocale(mConfiguration.locale); 353 } 354 return mPluralRule; 355 } 356 } 357 358 private static int attrForQuantityCode(int quantityCode) { 359 switch (quantityCode) { 360 case NativePluralRules.ZERO: return 0x01000005; 361 case NativePluralRules.ONE: return 0x01000006; 362 case NativePluralRules.TWO: return 0x01000007; 363 case NativePluralRules.FEW: return 0x01000008; 364 case NativePluralRules.MANY: return 0x01000009; 365 default: return ID_OTHER; 366 } 367 } 368 369 private static String stringForQuantityCode(int quantityCode) { 370 switch (quantityCode) { 371 case NativePluralRules.ZERO: return "zero"; 372 case NativePluralRules.ONE: return "one"; 373 case NativePluralRules.TWO: return "two"; 374 case NativePluralRules.FEW: return "few"; 375 case NativePluralRules.MANY: return "many"; 376 default: return "other"; 377 } 378 } 379 380 /** 381 * Return the string value associated with a particular resource ID. It 382 * will be stripped of any styled text information. 383 * {@more} 384 * 385 * @param id The desired resource identifier, as generated by the aapt 386 * tool. This integer encodes the package, type, and resource 387 * entry. The value 0 is an invalid identifier. 388 * 389 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 390 * 391 * @return String The string data associated with the resource, 392 * stripped of styled text information. 393 */ 394 public String getString(@StringRes int id) throws NotFoundException { 395 CharSequence res = getText(id); 396 if (res != null) { 397 return res.toString(); 398 } 399 throw new NotFoundException("String resource ID #0x" 400 + Integer.toHexString(id)); 401 } 402 403 404 /** 405 * Return the string value associated with a particular resource ID, 406 * substituting the format arguments as defined in {@link java.util.Formatter} 407 * and {@link java.lang.String#format}. It will be stripped of any styled text 408 * information. 409 * {@more} 410 * 411 * @param id The desired resource identifier, as generated by the aapt 412 * tool. This integer encodes the package, type, and resource 413 * entry. The value 0 is an invalid identifier. 414 * 415 * @param formatArgs The format arguments that will be used for substitution. 416 * 417 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 418 * 419 * @return String The string data associated with the resource, 420 * stripped of styled text information. 421 */ 422 public String getString(@StringRes int id, Object... formatArgs) 423 throws NotFoundException { 424 String raw = getString(id); 425 return String.format(mConfiguration.locale, raw, formatArgs); 426 } 427 428 /** 429 * Formats the string necessary for grammatically correct pluralization 430 * of the given resource ID for the given quantity, using the given arguments. 431 * Note that the string is selected based solely on grammatical necessity, 432 * and that such rules differ between languages. Do not assume you know which string 433 * will be returned for a given quantity. See 434 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 435 * for more detail. 436 * 437 * <p>Substitution of format arguments works as if using 438 * {@link java.util.Formatter} and {@link java.lang.String#format}. 439 * The resulting string will be stripped of any styled text information. 440 * 441 * @param id The desired resource identifier, as generated by the aapt 442 * tool. This integer encodes the package, type, and resource 443 * entry. The value 0 is an invalid identifier. 444 * @param quantity The number used to get the correct string for the current language's 445 * plural rules. 446 * @param formatArgs The format arguments that will be used for substitution. 447 * 448 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 449 * 450 * @return String The string data associated with the resource, 451 * stripped of styled text information. 452 */ 453 public String getQuantityString(@PluralsRes int id, int quantity, Object... formatArgs) 454 throws NotFoundException { 455 String raw = getQuantityText(id, quantity).toString(); 456 return String.format(mConfiguration.locale, raw, formatArgs); 457 } 458 459 /** 460 * Returns the string necessary for grammatically correct pluralization 461 * of the given resource ID for the given quantity. 462 * Note that the string is selected based solely on grammatical necessity, 463 * and that such rules differ between languages. Do not assume you know which string 464 * will be returned for a given quantity. See 465 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 466 * for more detail. 467 * 468 * @param id The desired resource identifier, as generated by the aapt 469 * tool. This integer encodes the package, type, and resource 470 * entry. The value 0 is an invalid identifier. 471 * @param quantity The number used to get the correct string for the current language's 472 * plural rules. 473 * 474 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 475 * 476 * @return String The string data associated with the resource, 477 * stripped of styled text information. 478 */ 479 public String getQuantityString(@PluralsRes int id, int quantity) 480 throws NotFoundException { 481 return getQuantityText(id, quantity).toString(); 482 } 483 484 /** 485 * Return the string value associated with a particular resource ID. The 486 * returned object will be a String if this is a plain string; it will be 487 * some other type of CharSequence if it is styled. 488 * 489 * @param id The desired resource identifier, as generated by the aapt 490 * tool. This integer encodes the package, type, and resource 491 * entry. The value 0 is an invalid identifier. 492 * 493 * @param def The default CharSequence to return. 494 * 495 * @return CharSequence The string data associated with the resource, plus 496 * possibly styled text information, or def if id is 0 or not found. 497 */ 498 public CharSequence getText(@StringRes int id, CharSequence def) { 499 CharSequence res = id != 0 ? mAssets.getResourceText(id) : null; 500 return res != null ? res : def; 501 } 502 503 /** 504 * Return the styled text array associated with a particular resource ID. 505 * 506 * @param id The desired resource identifier, as generated by the aapt 507 * tool. This integer encodes the package, type, and resource 508 * entry. The value 0 is an invalid identifier. 509 * 510 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 511 * 512 * @return The styled text array associated with the resource. 513 */ 514 public CharSequence[] getTextArray(@ArrayRes int id) throws NotFoundException { 515 CharSequence[] res = mAssets.getResourceTextArray(id); 516 if (res != null) { 517 return res; 518 } 519 throw new NotFoundException("Text array resource ID #0x" 520 + Integer.toHexString(id)); 521 } 522 523 /** 524 * Return the string array associated with a particular resource ID. 525 * 526 * @param id The desired resource identifier, as generated by the aapt 527 * tool. This integer encodes the package, type, and resource 528 * entry. The value 0 is an invalid identifier. 529 * 530 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 531 * 532 * @return The string array associated with the resource. 533 */ 534 public String[] getStringArray(@ArrayRes int id) 535 throws NotFoundException { 536 String[] res = mAssets.getResourceStringArray(id); 537 if (res != null) { 538 return res; 539 } 540 throw new NotFoundException("String array resource ID #0x" 541 + Integer.toHexString(id)); 542 } 543 544 /** 545 * Return the int array associated with a particular resource ID. 546 * 547 * @param id The desired resource identifier, as generated by the aapt 548 * tool. This integer encodes the package, type, and resource 549 * entry. The value 0 is an invalid identifier. 550 * 551 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 552 * 553 * @return The int array associated with the resource. 554 */ 555 public int[] getIntArray(@ArrayRes int id) throws NotFoundException { 556 int[] res = mAssets.getArrayIntResource(id); 557 if (res != null) { 558 return res; 559 } 560 throw new NotFoundException("Int array resource ID #0x" 561 + Integer.toHexString(id)); 562 } 563 564 /** 565 * Return an array of heterogeneous values. 566 * 567 * @param id The desired resource identifier, as generated by the aapt 568 * tool. This integer encodes the package, type, and resource 569 * entry. The value 0 is an invalid identifier. 570 * 571 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 572 * 573 * @return Returns a TypedArray holding an array of the array values. 574 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 575 * when done with it. 576 */ 577 public TypedArray obtainTypedArray(@ArrayRes int id) 578 throws NotFoundException { 579 int len = mAssets.getArraySize(id); 580 if (len < 0) { 581 throw new NotFoundException("Array resource ID #0x" 582 + Integer.toHexString(id)); 583 } 584 585 TypedArray array = TypedArray.obtain(this, len); 586 array.mLength = mAssets.retrieveArray(id, array.mData); 587 array.mIndices[0] = 0; 588 589 return array; 590 } 591 592 /** 593 * Retrieve a dimensional for a particular resource ID. Unit 594 * conversions are based on the current {@link DisplayMetrics} associated 595 * with the resources. 596 * 597 * @param id The desired resource identifier, as generated by the aapt 598 * tool. This integer encodes the package, type, and resource 599 * entry. The value 0 is an invalid identifier. 600 * 601 * @return Resource dimension value multiplied by the appropriate 602 * metric. 603 * 604 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 605 * 606 * @see #getDimensionPixelOffset 607 * @see #getDimensionPixelSize 608 */ 609 public float getDimension(@DimenRes int id) throws NotFoundException { 610 synchronized (mAccessLock) { 611 TypedValue value = mTmpValue; 612 if (value == null) { 613 mTmpValue = value = new TypedValue(); 614 } 615 getValue(id, value, true); 616 if (value.type == TypedValue.TYPE_DIMENSION) { 617 return TypedValue.complexToDimension(value.data, mMetrics); 618 } 619 throw new NotFoundException( 620 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 621 + Integer.toHexString(value.type) + " is not valid"); 622 } 623 } 624 625 /** 626 * Retrieve a dimensional for a particular resource ID for use 627 * as an offset in raw pixels. This is the same as 628 * {@link #getDimension}, except the returned value is converted to 629 * integer pixels for you. An offset conversion involves simply 630 * truncating the base value to an integer. 631 * 632 * @param id The desired resource identifier, as generated by the aapt 633 * tool. This integer encodes the package, type, and resource 634 * entry. The value 0 is an invalid identifier. 635 * 636 * @return Resource dimension value multiplied by the appropriate 637 * metric and truncated to integer pixels. 638 * 639 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 640 * 641 * @see #getDimension 642 * @see #getDimensionPixelSize 643 */ 644 public int getDimensionPixelOffset(@DimenRes int id) throws NotFoundException { 645 synchronized (mAccessLock) { 646 TypedValue value = mTmpValue; 647 if (value == null) { 648 mTmpValue = value = new TypedValue(); 649 } 650 getValue(id, value, true); 651 if (value.type == TypedValue.TYPE_DIMENSION) { 652 return TypedValue.complexToDimensionPixelOffset( 653 value.data, mMetrics); 654 } 655 throw new NotFoundException( 656 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 657 + Integer.toHexString(value.type) + " is not valid"); 658 } 659 } 660 661 /** 662 * Retrieve a dimensional for a particular resource ID for use 663 * as a size in raw pixels. This is the same as 664 * {@link #getDimension}, except the returned value is converted to 665 * integer pixels for use as a size. A size conversion involves 666 * rounding the base value, and ensuring that a non-zero base value 667 * is at least one pixel in size. 668 * 669 * @param id The desired resource identifier, as generated by the aapt 670 * tool. This integer encodes the package, type, and resource 671 * entry. The value 0 is an invalid identifier. 672 * 673 * @return Resource dimension value multiplied by the appropriate 674 * metric and truncated to integer pixels. 675 * 676 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 677 * 678 * @see #getDimension 679 * @see #getDimensionPixelOffset 680 */ 681 public int getDimensionPixelSize(@DimenRes int id) throws NotFoundException { 682 synchronized (mAccessLock) { 683 TypedValue value = mTmpValue; 684 if (value == null) { 685 mTmpValue = value = new TypedValue(); 686 } 687 getValue(id, value, true); 688 if (value.type == TypedValue.TYPE_DIMENSION) { 689 return TypedValue.complexToDimensionPixelSize( 690 value.data, mMetrics); 691 } 692 throw new NotFoundException( 693 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 694 + Integer.toHexString(value.type) + " is not valid"); 695 } 696 } 697 698 /** 699 * Retrieve a fractional unit for a particular resource ID. 700 * 701 * @param id The desired resource identifier, as generated by the aapt 702 * tool. This integer encodes the package, type, and resource 703 * entry. The value 0 is an invalid identifier. 704 * @param base The base value of this fraction. In other words, a 705 * standard fraction is multiplied by this value. 706 * @param pbase The parent base value of this fraction. In other 707 * words, a parent fraction (nn%p) is multiplied by this 708 * value. 709 * 710 * @return Attribute fractional value multiplied by the appropriate 711 * base value. 712 * 713 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 714 */ 715 public float getFraction(@FractionRes int id, int base, int pbase) { 716 synchronized (mAccessLock) { 717 TypedValue value = mTmpValue; 718 if (value == null) { 719 mTmpValue = value = new TypedValue(); 720 } 721 getValue(id, value, true); 722 if (value.type == TypedValue.TYPE_FRACTION) { 723 return TypedValue.complexToFraction(value.data, base, pbase); 724 } 725 throw new NotFoundException( 726 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 727 + Integer.toHexString(value.type) + " is not valid"); 728 } 729 } 730 731 /** 732 * Return a drawable object associated with a particular resource ID. 733 * Various types of objects will be returned depending on the underlying 734 * resource -- for example, a solid color, PNG image, scalable image, etc. 735 * The Drawable API hides these implementation details. 736 * 737 * <p class="note"><strong>Note:</strong> Prior to 738 * {@link android.os.Build.VERSION_CODES#JELLY_BEAN}, this function 739 * would not correctly retrieve the final configuration density when 740 * the resource ID passed here is an alias to another Drawable resource. 741 * This means that if the density configuration of the alias resource 742 * is different than the actual resource, the density of the returned 743 * Drawable would be incorrect, resulting in bad scaling. To work 744 * around this, you can instead retrieve the Drawable through 745 * {@link TypedArray#getDrawable TypedArray.getDrawable}. Use 746 * {@link android.content.Context#obtainStyledAttributes(int[]) 747 * Context.obtainStyledAttributes} with 748 * an array containing the resource ID of interest to create the TypedArray.</p> 749 * 750 * <p class="note"><strong>Note:</strong> To obtain a themed drawable, use 751 * {@link android.content.Context#getDrawable(int) Context.getDrawable(int)} 752 * or {@link #getDrawable(int, Theme)} passing the desired theme.</p> 753 * 754 * @param id The desired resource identifier, as generated by the aapt 755 * tool. This integer encodes the package, type, and resource 756 * entry. The value 0 is an invalid identifier. 757 * @return Drawable An object that can be used to draw this resource. 758 * @throws NotFoundException Throws NotFoundException if the given ID does 759 * not exist. 760 * @see #getDrawable(int, Theme) 761 * @deprecated Use {@link #getDrawable(int, Theme)} instead. 762 */ 763 @Deprecated 764 @Nullable 765 public Drawable getDrawable(@DrawableRes int id) throws NotFoundException { 766 final Drawable d = getDrawable(id, null); 767 if (d != null && d.canApplyTheme()) { 768 Log.w(TAG, "Drawable " + getResourceName(id) + " has unresolved theme " 769 + "attributes! Consider using Resources.getDrawable(int, Theme) or " 770 + "Context.getDrawable(int).", new RuntimeException()); 771 } 772 return d; 773 } 774 775 /** 776 * Return a drawable object associated with a particular resource ID and 777 * styled for the specified theme. Various types of objects will be 778 * returned depending on the underlying resource -- for example, a solid 779 * color, PNG image, scalable image, etc. 780 * 781 * @param id The desired resource identifier, as generated by the aapt 782 * tool. This integer encodes the package, type, and resource 783 * entry. The value 0 is an invalid identifier. 784 * @param theme The theme used to style the drawable attributes, may be {@code null}. 785 * @return Drawable An object that can be used to draw this resource. 786 * @throws NotFoundException Throws NotFoundException if the given ID does 787 * not exist. 788 */ 789 @Nullable 790 public Drawable getDrawable(@DrawableRes int id, @Nullable Theme theme) throws NotFoundException { 791 TypedValue value; 792 synchronized (mAccessLock) { 793 value = mTmpValue; 794 if (value == null) { 795 value = new TypedValue(); 796 } else { 797 mTmpValue = null; 798 } 799 getValue(id, value, true); 800 } 801 final Drawable res = loadDrawable(value, id, theme); 802 synchronized (mAccessLock) { 803 if (mTmpValue == null) { 804 mTmpValue = value; 805 } 806 } 807 return res; 808 } 809 810 /** 811 * Return a drawable object associated with a particular resource ID for the 812 * given screen density in DPI. This will set the drawable's density to be 813 * the device's density multiplied by the ratio of actual drawable density 814 * to requested density. This allows the drawable to be scaled up to the 815 * correct size if needed. Various types of objects will be returned 816 * depending on the underlying resource -- for example, a solid color, PNG 817 * image, scalable image, etc. The Drawable API hides these implementation 818 * details. 819 * 820 * <p class="note"><strong>Note:</strong> To obtain a themed drawable, use 821 * {@link android.content.Context#getDrawable(int) Context.getDrawable(int)} 822 * or {@link #getDrawableForDensity(int, int, Theme)} passing the desired 823 * theme.</p> 824 * 825 * @param id The desired resource identifier, as generated by the aapt tool. 826 * This integer encodes the package, type, and resource entry. 827 * The value 0 is an invalid identifier. 828 * @param density the desired screen density indicated by the resource as 829 * found in {@link DisplayMetrics}. 830 * @return Drawable An object that can be used to draw this resource. 831 * @throws NotFoundException Throws NotFoundException if the given ID does 832 * not exist. 833 * @see #getDrawableForDensity(int, int, Theme) 834 * @deprecated Use {@link #getDrawableForDensity(int, int, Theme)} instead. 835 */ 836 @Deprecated 837 @Nullable 838 public Drawable getDrawableForDensity(@DrawableRes int id, int density) throws NotFoundException { 839 return getDrawableForDensity(id, density, null); 840 } 841 842 /** 843 * Return a drawable object associated with a particular resource ID for the 844 * given screen density in DPI and styled for the specified theme. 845 * 846 * @param id The desired resource identifier, as generated by the aapt tool. 847 * This integer encodes the package, type, and resource entry. 848 * The value 0 is an invalid identifier. 849 * @param density The desired screen density indicated by the resource as 850 * found in {@link DisplayMetrics}. 851 * @param theme The theme used to style the drawable attributes, may be {@code null}. 852 * @return Drawable An object that can be used to draw this resource. 853 * @throws NotFoundException Throws NotFoundException if the given ID does 854 * not exist. 855 */ 856 @Nullable 857 public Drawable getDrawableForDensity(@DrawableRes int id, int density, @Nullable Theme theme) { 858 TypedValue value; 859 synchronized (mAccessLock) { 860 value = mTmpValue; 861 if (value == null) { 862 value = new TypedValue(); 863 } else { 864 mTmpValue = null; 865 } 866 getValueForDensity(id, density, value, true); 867 868 /* 869 * Pretend the requested density is actually the display density. If 870 * the drawable returned is not the requested density, then force it 871 * to be scaled later by dividing its density by the ratio of 872 * requested density to actual device density. Drawables that have 873 * undefined density or no density don't need to be handled here. 874 */ 875 if (value.density > 0 && value.density != TypedValue.DENSITY_NONE) { 876 if (value.density == density) { 877 value.density = mMetrics.densityDpi; 878 } else { 879 value.density = (value.density * mMetrics.densityDpi) / density; 880 } 881 } 882 } 883 884 final Drawable res = loadDrawable(value, id, theme); 885 synchronized (mAccessLock) { 886 if (mTmpValue == null) { 887 mTmpValue = value; 888 } 889 } 890 return res; 891 } 892 893 /** 894 * Return a movie object associated with the particular resource ID. 895 * @param id The desired resource identifier, as generated by the aapt 896 * tool. This integer encodes the package, type, and resource 897 * entry. The value 0 is an invalid identifier. 898 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 899 * 900 */ 901 public Movie getMovie(@RawRes int id) throws NotFoundException { 902 InputStream is = openRawResource(id); 903 Movie movie = Movie.decodeStream(is); 904 try { 905 is.close(); 906 } 907 catch (java.io.IOException e) { 908 // don't care, since the return value is valid 909 } 910 return movie; 911 } 912 913 /** 914 * Returns a color integer associated with a particular resource ID. If the 915 * resource holds a complex {@link ColorStateList}, then the default color 916 * from the set is returned. 917 * 918 * @param id The desired resource identifier, as generated by the aapt 919 * tool. This integer encodes the package, type, and resource 920 * entry. The value 0 is an invalid identifier. 921 * 922 * @throws NotFoundException Throws NotFoundException if the given ID does 923 * not exist. 924 * 925 * @return A single color value in the form 0xAARRGGBB. 926 * @deprecated Use {@link #getColor(int, Theme)} instead. 927 */ 928 public int getColor(@ColorRes int id) throws NotFoundException { 929 return getColor(id, null); 930 } 931 932 /** 933 * Returns a themed color integer associated with a particular resource ID. 934 * If the resource holds a complex {@link ColorStateList}, then the default 935 * color from the set is returned. 936 * 937 * @param id The desired resource identifier, as generated by the aapt 938 * tool. This integer encodes the package, type, and resource 939 * entry. The value 0 is an invalid identifier. 940 * @param theme The theme used to style the color attributes, may be 941 * {@code null}. 942 * 943 * @throws NotFoundException Throws NotFoundException if the given ID does 944 * not exist. 945 * 946 * @return A single color value in the form 0xAARRGGBB. 947 */ 948 public int getColor(@ColorRes int id, @Nullable Theme theme) throws NotFoundException { 949 TypedValue value; 950 synchronized (mAccessLock) { 951 value = mTmpValue; 952 if (value == null) { 953 value = new TypedValue(); 954 } 955 getValue(id, value, true); 956 if (value.type >= TypedValue.TYPE_FIRST_INT 957 && value.type <= TypedValue.TYPE_LAST_INT) { 958 mTmpValue = value; 959 return value.data; 960 } else if (value.type != TypedValue.TYPE_STRING) { 961 throw new NotFoundException( 962 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 963 + Integer.toHexString(value.type) + " is not valid"); 964 } 965 mTmpValue = null; 966 } 967 968 final ColorStateList csl = loadColorStateList(value, id, theme); 969 synchronized (mAccessLock) { 970 if (mTmpValue == null) { 971 mTmpValue = value; 972 } 973 } 974 975 return csl.getDefaultColor(); 976 } 977 978 /** 979 * Returns a color state list associated with a particular resource ID. The 980 * resource may contain either a single raw color value or a complex 981 * {@link ColorStateList} holding multiple possible colors. 982 * 983 * @param id The desired resource identifier of a {@link ColorStateList}, 984 * as generated by the aapt tool. This integer encodes the 985 * package, type, and resource entry. The value 0 is an invalid 986 * identifier. 987 * 988 * @throws NotFoundException Throws NotFoundException if the given ID does 989 * not exist. 990 * 991 * @return A ColorStateList object containing either a single solid color 992 * or multiple colors that can be selected based on a state. 993 * @deprecated Use {@link #getColorStateList(int, Theme)} instead. 994 */ 995 @Nullable 996 public ColorStateList getColorStateList(@ColorRes int id) throws NotFoundException { 997 final ColorStateList csl = getColorStateList(id, null); 998 if (csl != null && csl.canApplyTheme()) { 999 Log.w(TAG, "ColorStateList " + getResourceName(id) + " has " 1000 + "unresolved theme attributes! Consider using " 1001 + "Resources.getColorStateList(int, Theme) or " 1002 + "Context.getColorStateList(int).", new RuntimeException()); 1003 } 1004 return csl; 1005 } 1006 1007 /** 1008 * Returns a themed color state list associated with a particular resource 1009 * ID. The resource may contain either a single raw color value or a 1010 * complex {@link ColorStateList} holding multiple possible colors. 1011 * 1012 * @param id The desired resource identifier of a {@link ColorStateList}, 1013 * as generated by the aapt tool. This integer encodes the 1014 * package, type, and resource entry. The value 0 is an invalid 1015 * identifier. 1016 * @param theme The theme used to style the color attributes, may be 1017 * {@code null}. 1018 * 1019 * @throws NotFoundException Throws NotFoundException if the given ID does 1020 * not exist. 1021 * 1022 * @return A themed ColorStateList object containing either a single solid 1023 * color or multiple colors that can be selected based on a state. 1024 */ 1025 @Nullable 1026 public ColorStateList getColorStateList(@ColorRes int id, @Nullable Theme theme) 1027 throws NotFoundException { 1028 TypedValue value; 1029 synchronized (mAccessLock) { 1030 value = mTmpValue; 1031 if (value == null) { 1032 value = new TypedValue(); 1033 } else { 1034 mTmpValue = null; 1035 } 1036 getValue(id, value, true); 1037 } 1038 1039 final ColorStateList res = loadColorStateList(value, id, theme); 1040 synchronized (mAccessLock) { 1041 if (mTmpValue == null) { 1042 mTmpValue = value; 1043 } 1044 } 1045 1046 return res; 1047 } 1048 1049 1050 1051 /** 1052 * Return a boolean associated with a particular resource ID. This can be 1053 * used with any integral resource value, and will return true if it is 1054 * non-zero. 1055 * 1056 * @param id The desired resource identifier, as generated by the aapt 1057 * tool. This integer encodes the package, type, and resource 1058 * entry. The value 0 is an invalid identifier. 1059 * 1060 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1061 * 1062 * @return Returns the boolean value contained in the resource. 1063 */ 1064 public boolean getBoolean(@BoolRes int id) throws NotFoundException { 1065 synchronized (mAccessLock) { 1066 TypedValue value = mTmpValue; 1067 if (value == null) { 1068 mTmpValue = value = new TypedValue(); 1069 } 1070 getValue(id, value, true); 1071 if (value.type >= TypedValue.TYPE_FIRST_INT 1072 && value.type <= TypedValue.TYPE_LAST_INT) { 1073 return value.data != 0; 1074 } 1075 throw new NotFoundException( 1076 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 1077 + Integer.toHexString(value.type) + " is not valid"); 1078 } 1079 } 1080 1081 /** 1082 * Return an integer associated with a particular resource ID. 1083 * 1084 * @param id The desired resource identifier, as generated by the aapt 1085 * tool. This integer encodes the package, type, and resource 1086 * entry. The value 0 is an invalid identifier. 1087 * 1088 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1089 * 1090 * @return Returns the integer value contained in the resource. 1091 */ 1092 public int getInteger(@IntegerRes int id) throws NotFoundException { 1093 synchronized (mAccessLock) { 1094 TypedValue value = mTmpValue; 1095 if (value == null) { 1096 mTmpValue = value = new TypedValue(); 1097 } 1098 getValue(id, value, true); 1099 if (value.type >= TypedValue.TYPE_FIRST_INT 1100 && value.type <= TypedValue.TYPE_LAST_INT) { 1101 return value.data; 1102 } 1103 throw new NotFoundException( 1104 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 1105 + Integer.toHexString(value.type) + " is not valid"); 1106 } 1107 } 1108 1109 /** 1110 * Retrieve a floating-point value for a particular resource ID. 1111 * 1112 * @param id The desired resource identifier, as generated by the aapt 1113 * tool. This integer encodes the package, type, and resource 1114 * entry. The value 0 is an invalid identifier. 1115 * 1116 * @return Returns the floating-point value contained in the resource. 1117 * 1118 * @throws NotFoundException Throws NotFoundException if the given ID does 1119 * not exist or is not a floating-point value. 1120 * @hide Pending API council approval. 1121 */ 1122 public float getFloat(int id) { 1123 synchronized (mAccessLock) { 1124 TypedValue value = mTmpValue; 1125 if (value == null) { 1126 mTmpValue = value = new TypedValue(); 1127 } 1128 getValue(id, value, true); 1129 if (value.type == TypedValue.TYPE_FLOAT) { 1130 return value.getFloat(); 1131 } 1132 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) + " type #0x" 1133 + Integer.toHexString(value.type) + " is not valid"); 1134 } 1135 } 1136 1137 /** 1138 * Return an XmlResourceParser through which you can read a view layout 1139 * description for the given resource ID. This parser has limited 1140 * functionality -- in particular, you can't change its input, and only 1141 * the high-level events are available. 1142 * 1143 * <p>This function is really a simple wrapper for calling 1144 * {@link #getXml} with a layout resource. 1145 * 1146 * @param id The desired resource identifier, as generated by the aapt 1147 * tool. This integer encodes the package, type, and resource 1148 * entry. The value 0 is an invalid identifier. 1149 * 1150 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1151 * 1152 * @return A new parser object through which you can read 1153 * the XML data. 1154 * 1155 * @see #getXml 1156 */ 1157 public XmlResourceParser getLayout(@LayoutRes int id) throws NotFoundException { 1158 return loadXmlResourceParser(id, "layout"); 1159 } 1160 1161 /** 1162 * Return an XmlResourceParser through which you can read an animation 1163 * description for the given resource ID. This parser has limited 1164 * functionality -- in particular, you can't change its input, and only 1165 * the high-level events are available. 1166 * 1167 * <p>This function is really a simple wrapper for calling 1168 * {@link #getXml} with an animation resource. 1169 * 1170 * @param id The desired resource identifier, as generated by the aapt 1171 * tool. This integer encodes the package, type, and resource 1172 * entry. The value 0 is an invalid identifier. 1173 * 1174 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1175 * 1176 * @return A new parser object through which you can read 1177 * the XML data. 1178 * 1179 * @see #getXml 1180 */ 1181 public XmlResourceParser getAnimation(@AnimRes int id) throws NotFoundException { 1182 return loadXmlResourceParser(id, "anim"); 1183 } 1184 1185 /** 1186 * Return an XmlResourceParser through which you can read a generic XML 1187 * resource for the given resource ID. 1188 * 1189 * <p>The XmlPullParser implementation returned here has some limited 1190 * functionality. In particular, you can't change its input, and only 1191 * high-level parsing events are available (since the document was 1192 * pre-parsed for you at build time, which involved merging text and 1193 * stripping comments). 1194 * 1195 * @param id The desired resource identifier, as generated by the aapt 1196 * tool. This integer encodes the package, type, and resource 1197 * entry. The value 0 is an invalid identifier. 1198 * 1199 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1200 * 1201 * @return A new parser object through which you can read 1202 * the XML data. 1203 * 1204 * @see android.util.AttributeSet 1205 */ 1206 public XmlResourceParser getXml(@XmlRes int id) throws NotFoundException { 1207 return loadXmlResourceParser(id, "xml"); 1208 } 1209 1210 /** 1211 * Open a data stream for reading a raw resource. This can only be used 1212 * with resources whose value is the name of an asset files -- that is, it can be 1213 * used to open drawable, sound, and raw resources; it will fail on string 1214 * and color resources. 1215 * 1216 * @param id The resource identifier to open, as generated by the appt 1217 * tool. 1218 * 1219 * @return InputStream Access to the resource data. 1220 * 1221 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1222 * 1223 */ 1224 public InputStream openRawResource(@RawRes int id) throws NotFoundException { 1225 TypedValue value; 1226 synchronized (mAccessLock) { 1227 value = mTmpValue; 1228 if (value == null) { 1229 value = new TypedValue(); 1230 } else { 1231 mTmpValue = null; 1232 } 1233 } 1234 InputStream res = openRawResource(id, value); 1235 synchronized (mAccessLock) { 1236 if (mTmpValue == null) { 1237 mTmpValue = value; 1238 } 1239 } 1240 return res; 1241 } 1242 1243 /** 1244 * Open a data stream for reading a raw resource. This can only be used 1245 * with resources whose value is the name of an asset file -- that is, it can be 1246 * used to open drawable, sound, and raw resources; it will fail on string 1247 * and color resources. 1248 * 1249 * @param id The resource identifier to open, as generated by the appt tool. 1250 * @param value The TypedValue object to hold the resource information. 1251 * 1252 * @return InputStream Access to the resource data. 1253 * 1254 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1255 */ 1256 public InputStream openRawResource(@RawRes int id, TypedValue value) 1257 throws NotFoundException { 1258 getValue(id, value, true); 1259 1260 try { 1261 return mAssets.openNonAsset(value.assetCookie, value.string.toString(), 1262 AssetManager.ACCESS_STREAMING); 1263 } catch (Exception e) { 1264 NotFoundException rnf = new NotFoundException("File " + value.string.toString() + 1265 " from drawable resource ID #0x" + Integer.toHexString(id)); 1266 rnf.initCause(e); 1267 throw rnf; 1268 } 1269 } 1270 1271 /** 1272 * Open a file descriptor for reading a raw resource. This can only be used 1273 * with resources whose value is the name of an asset files -- that is, it can be 1274 * used to open drawable, sound, and raw resources; it will fail on string 1275 * and color resources. 1276 * 1277 * <p>This function only works for resources that are stored in the package 1278 * as uncompressed data, which typically includes things like mp3 files 1279 * and png images. 1280 * 1281 * @param id The resource identifier to open, as generated by the appt 1282 * tool. 1283 * 1284 * @return AssetFileDescriptor A new file descriptor you can use to read 1285 * the resource. This includes the file descriptor itself, as well as the 1286 * offset and length of data where the resource appears in the file. A 1287 * null is returned if the file exists but is compressed. 1288 * 1289 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1290 * 1291 */ 1292 public AssetFileDescriptor openRawResourceFd(@RawRes int id) 1293 throws NotFoundException { 1294 TypedValue value; 1295 synchronized (mAccessLock) { 1296 value = mTmpValue; 1297 if (value == null) { 1298 value = new TypedValue(); 1299 } else { 1300 mTmpValue = null; 1301 } 1302 getValue(id, value, true); 1303 } 1304 try { 1305 return mAssets.openNonAssetFd( 1306 value.assetCookie, value.string.toString()); 1307 } catch (Exception e) { 1308 NotFoundException rnf = new NotFoundException( 1309 "File " + value.string.toString() 1310 + " from drawable resource ID #0x" 1311 + Integer.toHexString(id)); 1312 rnf.initCause(e); 1313 throw rnf; 1314 } finally { 1315 synchronized (mAccessLock) { 1316 if (mTmpValue == null) { 1317 mTmpValue = value; 1318 } 1319 } 1320 } 1321 } 1322 1323 /** 1324 * Return the raw data associated with a particular resource ID. 1325 * 1326 * @param id The desired resource identifier, as generated by the aapt 1327 * tool. This integer encodes the package, type, and resource 1328 * entry. The value 0 is an invalid identifier. 1329 * @param outValue Object in which to place the resource data. 1330 * @param resolveRefs If true, a resource that is a reference to another 1331 * resource will be followed so that you receive the 1332 * actual final resource data. If false, the TypedValue 1333 * will be filled in with the reference itself. 1334 * 1335 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1336 * 1337 */ 1338 public void getValue(@AnyRes int id, TypedValue outValue, boolean resolveRefs) 1339 throws NotFoundException { 1340 boolean found = mAssets.getResourceValue(id, 0, outValue, resolveRefs); 1341 if (found) { 1342 return; 1343 } 1344 throw new NotFoundException("Resource ID #0x" 1345 + Integer.toHexString(id)); 1346 } 1347 1348 /** 1349 * Get the raw value associated with a resource with associated density. 1350 * 1351 * @param id resource identifier 1352 * @param density density in DPI 1353 * @param resolveRefs If true, a resource that is a reference to another 1354 * resource will be followed so that you receive the actual final 1355 * resource data. If false, the TypedValue will be filled in with 1356 * the reference itself. 1357 * @throws NotFoundException Throws NotFoundException if the given ID does 1358 * not exist. 1359 * @see #getValue(String, TypedValue, boolean) 1360 */ 1361 public void getValueForDensity(@AnyRes int id, int density, TypedValue outValue, 1362 boolean resolveRefs) throws NotFoundException { 1363 boolean found = mAssets.getResourceValue(id, density, outValue, resolveRefs); 1364 if (found) { 1365 return; 1366 } 1367 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id)); 1368 } 1369 1370 /** 1371 * Return the raw data associated with a particular resource ID. 1372 * See getIdentifier() for information on how names are mapped to resource 1373 * IDs, and getString(int) for information on how string resources are 1374 * retrieved. 1375 * 1376 * <p>Note: use of this function is discouraged. It is much more 1377 * efficient to retrieve resources by identifier than by name. 1378 * 1379 * @param name The name of the desired resource. This is passed to 1380 * getIdentifier() with a default type of "string". 1381 * @param outValue Object in which to place the resource data. 1382 * @param resolveRefs If true, a resource that is a reference to another 1383 * resource will be followed so that you receive the 1384 * actual final resource data. If false, the TypedValue 1385 * will be filled in with the reference itself. 1386 * 1387 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1388 * 1389 */ 1390 public void getValue(String name, TypedValue outValue, boolean resolveRefs) 1391 throws NotFoundException { 1392 int id = getIdentifier(name, "string", null); 1393 if (id != 0) { 1394 getValue(id, outValue, resolveRefs); 1395 return; 1396 } 1397 throw new NotFoundException("String resource name " + name); 1398 } 1399 1400 /** 1401 * This class holds the current attribute values for a particular theme. 1402 * In other words, a Theme is a set of values for resource attributes; 1403 * these are used in conjunction with {@link TypedArray} 1404 * to resolve the final value for an attribute. 1405 * 1406 * <p>The Theme's attributes come into play in two ways: (1) a styled 1407 * attribute can explicit reference a value in the theme through the 1408 * "?themeAttribute" syntax; (2) if no value has been defined for a 1409 * particular styled attribute, as a last resort we will try to find that 1410 * attribute's value in the Theme. 1411 * 1412 * <p>You will normally use the {@link #obtainStyledAttributes} APIs to 1413 * retrieve XML attributes with style and theme information applied. 1414 */ 1415 public final class Theme { 1416 /** 1417 * Place new attribute values into the theme. The style resource 1418 * specified by <var>resid</var> will be retrieved from this Theme's 1419 * resources, its values placed into the Theme object. 1420 * 1421 * <p>The semantics of this function depends on the <var>force</var> 1422 * argument: If false, only values that are not already defined in 1423 * the theme will be copied from the system resource; otherwise, if 1424 * any of the style's attributes are already defined in the theme, the 1425 * current values in the theme will be overwritten. 1426 * 1427 * @param resId The resource ID of a style resource from which to 1428 * obtain attribute values. 1429 * @param force If true, values in the style resource will always be 1430 * used in the theme; otherwise, they will only be used 1431 * if not already defined in the theme. 1432 */ 1433 public void applyStyle(int resId, boolean force) { 1434 AssetManager.applyThemeStyle(mTheme, resId, force); 1435 1436 mThemeResId = resId; 1437 mKey += Integer.toHexString(resId) + (force ? "! " : " "); 1438 } 1439 1440 /** 1441 * Set this theme to hold the same contents as the theme 1442 * <var>other</var>. If both of these themes are from the same 1443 * Resources object, they will be identical after this function 1444 * returns. If they are from different Resources, only the resources 1445 * they have in common will be set in this theme. 1446 * 1447 * @param other The existing Theme to copy from. 1448 */ 1449 public void setTo(Theme other) { 1450 AssetManager.copyTheme(mTheme, other.mTheme); 1451 1452 mThemeResId = other.mThemeResId; 1453 mKey = other.mKey; 1454 } 1455 1456 /** 1457 * Return a TypedArray holding the values defined by 1458 * <var>Theme</var> which are listed in <var>attrs</var>. 1459 * 1460 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1461 * with the array. 1462 * 1463 * @param attrs The desired attributes. 1464 * 1465 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1466 * 1467 * @return Returns a TypedArray holding an array of the attribute values. 1468 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1469 * when done with it. 1470 * 1471 * @see Resources#obtainAttributes 1472 * @see #obtainStyledAttributes(int, int[]) 1473 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1474 */ 1475 public TypedArray obtainStyledAttributes(int[] attrs) { 1476 final int len = attrs.length; 1477 final TypedArray array = TypedArray.obtain(Resources.this, len); 1478 array.mTheme = this; 1479 AssetManager.applyStyle(mTheme, 0, 0, 0, attrs, array.mData, array.mIndices); 1480 return array; 1481 } 1482 1483 /** 1484 * Return a TypedArray holding the values defined by the style 1485 * resource <var>resid</var> which are listed in <var>attrs</var>. 1486 * 1487 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1488 * with the array. 1489 * 1490 * @param resid The desired style resource. 1491 * @param attrs The desired attributes in the style. 1492 * 1493 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1494 * 1495 * @return Returns a TypedArray holding an array of the attribute values. 1496 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1497 * when done with it. 1498 * 1499 * @see Resources#obtainAttributes 1500 * @see #obtainStyledAttributes(int[]) 1501 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1502 */ 1503 public TypedArray obtainStyledAttributes(int resid, int[] attrs) throws NotFoundException { 1504 final int len = attrs.length; 1505 final TypedArray array = TypedArray.obtain(Resources.this, len); 1506 array.mTheme = this; 1507 if (false) { 1508 int[] data = array.mData; 1509 1510 System.out.println("**********************************************************"); 1511 System.out.println("**********************************************************"); 1512 System.out.println("**********************************************************"); 1513 System.out.println("Attributes:"); 1514 String s = " Attrs:"; 1515 int i; 1516 for (i=0; i<attrs.length; i++) { 1517 s = s + " 0x" + Integer.toHexString(attrs[i]); 1518 } 1519 System.out.println(s); 1520 s = " Found:"; 1521 TypedValue value = new TypedValue(); 1522 for (i=0; i<attrs.length; i++) { 1523 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1524 value.type = data[d+AssetManager.STYLE_TYPE]; 1525 value.data = data[d+AssetManager.STYLE_DATA]; 1526 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1527 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1528 s = s + " 0x" + Integer.toHexString(attrs[i]) 1529 + "=" + value; 1530 } 1531 System.out.println(s); 1532 } 1533 AssetManager.applyStyle(mTheme, 0, resid, 0, attrs, array.mData, array.mIndices); 1534 return array; 1535 } 1536 1537 /** 1538 * Return a TypedArray holding the attribute values in 1539 * <var>set</var> 1540 * that are listed in <var>attrs</var>. In addition, if the given 1541 * AttributeSet specifies a style class (through the "style" attribute), 1542 * that style will be applied on top of the base attributes it defines. 1543 * 1544 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1545 * with the array. 1546 * 1547 * <p>When determining the final value of a particular attribute, there 1548 * are four inputs that come into play:</p> 1549 * 1550 * <ol> 1551 * <li> Any attribute values in the given AttributeSet. 1552 * <li> The style resource specified in the AttributeSet (named 1553 * "style"). 1554 * <li> The default style specified by <var>defStyleAttr</var> and 1555 * <var>defStyleRes</var> 1556 * <li> The base values in this theme. 1557 * </ol> 1558 * 1559 * <p>Each of these inputs is considered in-order, with the first listed 1560 * taking precedence over the following ones. In other words, if in the 1561 * AttributeSet you have supplied <code><Button 1562 * textColor="#ff000000"></code>, then the button's text will 1563 * <em>always</em> be black, regardless of what is specified in any of 1564 * the styles. 1565 * 1566 * @param set The base set of attribute values. May be null. 1567 * @param attrs The desired attributes to be retrieved. 1568 * @param defStyleAttr An attribute in the current theme that contains a 1569 * reference to a style resource that supplies 1570 * defaults values for the TypedArray. Can be 1571 * 0 to not look for defaults. 1572 * @param defStyleRes A resource identifier of a style resource that 1573 * supplies default values for the TypedArray, 1574 * used only if defStyleAttr is 0 or can not be found 1575 * in the theme. Can be 0 to not look for defaults. 1576 * 1577 * @return Returns a TypedArray holding an array of the attribute values. 1578 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1579 * when done with it. 1580 * 1581 * @see Resources#obtainAttributes 1582 * @see #obtainStyledAttributes(int[]) 1583 * @see #obtainStyledAttributes(int, int[]) 1584 */ 1585 public TypedArray obtainStyledAttributes(AttributeSet set, 1586 int[] attrs, int defStyleAttr, int defStyleRes) { 1587 final int len = attrs.length; 1588 final TypedArray array = TypedArray.obtain(Resources.this, len); 1589 1590 // XXX note that for now we only work with compiled XML files. 1591 // To support generic XML files we will need to manually parse 1592 // out the attributes from the XML file (applying type information 1593 // contained in the resources and such). 1594 final XmlBlock.Parser parser = (XmlBlock.Parser)set; 1595 AssetManager.applyStyle(mTheme, defStyleAttr, defStyleRes, 1596 parser != null ? parser.mParseState : 0, attrs, array.mData, array.mIndices); 1597 1598 array.mTheme = this; 1599 array.mXml = parser; 1600 1601 if (false) { 1602 int[] data = array.mData; 1603 1604 System.out.println("Attributes:"); 1605 String s = " Attrs:"; 1606 int i; 1607 for (i=0; i<set.getAttributeCount(); i++) { 1608 s = s + " " + set.getAttributeName(i); 1609 int id = set.getAttributeNameResource(i); 1610 if (id != 0) { 1611 s = s + "(0x" + Integer.toHexString(id) + ")"; 1612 } 1613 s = s + "=" + set.getAttributeValue(i); 1614 } 1615 System.out.println(s); 1616 s = " Found:"; 1617 TypedValue value = new TypedValue(); 1618 for (i=0; i<attrs.length; i++) { 1619 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1620 value.type = data[d+AssetManager.STYLE_TYPE]; 1621 value.data = data[d+AssetManager.STYLE_DATA]; 1622 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1623 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1624 s = s + " 0x" + Integer.toHexString(attrs[i]) 1625 + "=" + value; 1626 } 1627 System.out.println(s); 1628 } 1629 1630 return array; 1631 } 1632 1633 /** 1634 * Retrieve the values for a set of attributes in the Theme. The 1635 * contents of the typed array are ultimately filled in by 1636 * {@link Resources#getValue}. 1637 * 1638 * @param values The base set of attribute values, must be equal in 1639 * length to {@code attrs}. All values must be of type 1640 * {@link TypedValue#TYPE_ATTRIBUTE}. 1641 * @param attrs The desired attributes to be retrieved. 1642 * @return Returns a TypedArray holding an array of the attribute 1643 * values. Be sure to call {@link TypedArray#recycle()} 1644 * when done with it. 1645 * @hide 1646 */ 1647 @NonNull 1648 public TypedArray resolveAttributes(@NonNull int[] values, @NonNull int[] attrs) { 1649 final int len = attrs.length; 1650 if (values == null || len != values.length) { 1651 throw new IllegalArgumentException( 1652 "Base attribute values must the same length as attrs"); 1653 } 1654 1655 final TypedArray array = TypedArray.obtain(Resources.this, len); 1656 AssetManager.resolveAttrs(mTheme, 0, 0, values, attrs, array.mData, array.mIndices); 1657 array.mTheme = this; 1658 array.mXml = null; 1659 1660 return array; 1661 } 1662 1663 /** 1664 * Retrieve the value of an attribute in the Theme. The contents of 1665 * <var>outValue</var> are ultimately filled in by 1666 * {@link Resources#getValue}. 1667 * 1668 * @param resid The resource identifier of the desired theme 1669 * attribute. 1670 * @param outValue Filled in with the ultimate resource value supplied 1671 * by the attribute. 1672 * @param resolveRefs If true, resource references will be walked; if 1673 * false, <var>outValue</var> may be a 1674 * TYPE_REFERENCE. In either case, it will never 1675 * be a TYPE_ATTRIBUTE. 1676 * 1677 * @return boolean Returns true if the attribute was found and 1678 * <var>outValue</var> is valid, else false. 1679 */ 1680 public boolean resolveAttribute(int resid, TypedValue outValue, boolean resolveRefs) { 1681 boolean got = mAssets.getThemeValue(mTheme, resid, outValue, resolveRefs); 1682 if (false) { 1683 System.out.println( 1684 "resolveAttribute #" + Integer.toHexString(resid) 1685 + " got=" + got + ", type=0x" + Integer.toHexString(outValue.type) 1686 + ", data=0x" + Integer.toHexString(outValue.data)); 1687 } 1688 return got; 1689 } 1690 1691 /** 1692 * Gets all of the attribute ids associated with this {@link Theme}. For debugging only. 1693 * 1694 * @return The int array containing attribute ids associated with this {@link Theme}. 1695 * @hide 1696 */ 1697 public int[] getAllAttributes() { 1698 return mAssets.getStyleAttributes(getAppliedStyleResId()); 1699 } 1700 1701 /** 1702 * Returns the resources to which this theme belongs. 1703 * 1704 * @return Resources to which this theme belongs. 1705 */ 1706 public Resources getResources() { 1707 return Resources.this; 1708 } 1709 1710 /** 1711 * Return a drawable object associated with a particular resource ID 1712 * and styled for the Theme. 1713 * 1714 * @param id The desired resource identifier, as generated by the aapt 1715 * tool. This integer encodes the package, type, and resource 1716 * entry. The value 0 is an invalid identifier. 1717 * @return Drawable An object that can be used to draw this resource. 1718 * @throws NotFoundException Throws NotFoundException if the given ID 1719 * does not exist. 1720 */ 1721 public Drawable getDrawable(@DrawableRes int id) throws NotFoundException { 1722 return Resources.this.getDrawable(id, this); 1723 } 1724 1725 /** 1726 * Print contents of this theme out to the log. For debugging only. 1727 * 1728 * @param priority The log priority to use. 1729 * @param tag The log tag to use. 1730 * @param prefix Text to prefix each line printed. 1731 */ 1732 public void dump(int priority, String tag, String prefix) { 1733 AssetManager.dumpTheme(mTheme, priority, tag, prefix); 1734 } 1735 1736 @Override 1737 protected void finalize() throws Throwable { 1738 super.finalize(); 1739 mAssets.releaseTheme(mTheme); 1740 } 1741 1742 /*package*/ Theme() { 1743 mAssets = Resources.this.mAssets; 1744 mTheme = mAssets.createTheme(); 1745 } 1746 1747 @SuppressWarnings("hiding") 1748 private final AssetManager mAssets; 1749 private final long mTheme; 1750 1751 /** Resource identifier for the theme. */ 1752 private int mThemeResId = 0; 1753 1754 /** Unique key for the series of styles applied to this theme. */ 1755 private String mKey = ""; 1756 1757 // Needed by layoutlib. 1758 /*package*/ long getNativeTheme() { 1759 return mTheme; 1760 } 1761 1762 /*package*/ int getAppliedStyleResId() { 1763 return mThemeResId; 1764 } 1765 1766 /*package*/ String getKey() { 1767 return mKey; 1768 } 1769 1770 private String getResourceNameFromHexString(String hexString) { 1771 return getResourceName(Integer.parseInt(hexString, 16)); 1772 } 1773 1774 /** 1775 * Parses {@link #mKey} and returns a String array that holds pairs of adjacent Theme data: 1776 * resource name followed by whether or not it was forced, as specified by 1777 * {@link #applyStyle(int, boolean)}. 1778 * 1779 * @hide 1780 */ 1781 @ViewDebug.ExportedProperty(category = "theme", hasAdjacentMapping = true) 1782 public String[] getTheme() { 1783 String[] themeData = mKey.split(" "); 1784 String[] themes = new String[themeData.length * 2]; 1785 String theme; 1786 boolean forced; 1787 1788 for (int i = 0, j = themeData.length - 1; i < themes.length; i += 2, --j) { 1789 theme = themeData[j]; 1790 forced = theme.endsWith("!"); 1791 themes[i] = forced ? 1792 getResourceNameFromHexString(theme.substring(0, theme.length() - 1)) : 1793 getResourceNameFromHexString(theme); 1794 themes[i + 1] = forced ? "forced" : "not forced"; 1795 } 1796 return themes; 1797 } 1798 } 1799 1800 /** 1801 * Generate a new Theme object for this set of Resources. It initially 1802 * starts out empty. 1803 * 1804 * @return Theme The newly created Theme container. 1805 */ 1806 public final Theme newTheme() { 1807 return new Theme(); 1808 } 1809 1810 /** 1811 * Retrieve a set of basic attribute values from an AttributeSet, not 1812 * performing styling of them using a theme and/or style resources. 1813 * 1814 * @param set The current attribute values to retrieve. 1815 * @param attrs The specific attributes to be retrieved. 1816 * @return Returns a TypedArray holding an array of the attribute values. 1817 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1818 * when done with it. 1819 * 1820 * @see Theme#obtainStyledAttributes(AttributeSet, int[], int, int) 1821 */ 1822 public TypedArray obtainAttributes(AttributeSet set, int[] attrs) { 1823 int len = attrs.length; 1824 TypedArray array = TypedArray.obtain(this, len); 1825 1826 // XXX note that for now we only work with compiled XML files. 1827 // To support generic XML files we will need to manually parse 1828 // out the attributes from the XML file (applying type information 1829 // contained in the resources and such). 1830 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1831 mAssets.retrieveAttributes(parser.mParseState, attrs, 1832 array.mData, array.mIndices); 1833 1834 array.mXml = parser; 1835 1836 return array; 1837 } 1838 1839 /** 1840 * Store the newly updated configuration. 1841 */ 1842 public void updateConfiguration(Configuration config, 1843 DisplayMetrics metrics) { 1844 updateConfiguration(config, metrics, null); 1845 } 1846 1847 /** 1848 * @hide 1849 */ 1850 public void updateConfiguration(Configuration config, 1851 DisplayMetrics metrics, CompatibilityInfo compat) { 1852 synchronized (mAccessLock) { 1853 if (false) { 1854 Slog.i(TAG, "**** Updating config of " + this + ": old config is " 1855 + mConfiguration + " old compat is " + mCompatibilityInfo); 1856 Slog.i(TAG, "**** Updating config of " + this + ": new config is " 1857 + config + " new compat is " + compat); 1858 } 1859 if (compat != null) { 1860 mCompatibilityInfo = compat; 1861 } 1862 if (metrics != null) { 1863 mMetrics.setTo(metrics); 1864 } 1865 // NOTE: We should re-arrange this code to create a Display 1866 // with the CompatibilityInfo that is used everywhere we deal 1867 // with the display in relation to this app, rather than 1868 // doing the conversion here. This impl should be okay because 1869 // we make sure to return a compatible display in the places 1870 // where there are public APIs to retrieve the display... but 1871 // it would be cleaner and more maintainble to just be 1872 // consistently dealing with a compatible display everywhere in 1873 // the framework. 1874 mCompatibilityInfo.applyToDisplayMetrics(mMetrics); 1875 1876 int configChanges = calcConfigChanges(config); 1877 if (mConfiguration.locale == null) { 1878 mConfiguration.locale = Locale.getDefault(); 1879 mConfiguration.setLayoutDirection(mConfiguration.locale); 1880 } 1881 if (mConfiguration.densityDpi != Configuration.DENSITY_DPI_UNDEFINED) { 1882 mMetrics.densityDpi = mConfiguration.densityDpi; 1883 mMetrics.density = mConfiguration.densityDpi * DisplayMetrics.DENSITY_DEFAULT_SCALE; 1884 } 1885 mMetrics.scaledDensity = mMetrics.density * mConfiguration.fontScale; 1886 1887 String locale = null; 1888 if (mConfiguration.locale != null) { 1889 locale = adjustLanguageTag(mConfiguration.locale.toLanguageTag()); 1890 } 1891 int width, height; 1892 if (mMetrics.widthPixels >= mMetrics.heightPixels) { 1893 width = mMetrics.widthPixels; 1894 height = mMetrics.heightPixels; 1895 } else { 1896 //noinspection SuspiciousNameCombination 1897 width = mMetrics.heightPixels; 1898 //noinspection SuspiciousNameCombination 1899 height = mMetrics.widthPixels; 1900 } 1901 int keyboardHidden = mConfiguration.keyboardHidden; 1902 if (keyboardHidden == Configuration.KEYBOARDHIDDEN_NO 1903 && mConfiguration.hardKeyboardHidden 1904 == Configuration.HARDKEYBOARDHIDDEN_YES) { 1905 keyboardHidden = Configuration.KEYBOARDHIDDEN_SOFT; 1906 } 1907 mAssets.setConfiguration(mConfiguration.mcc, mConfiguration.mnc, 1908 locale, mConfiguration.orientation, 1909 mConfiguration.touchscreen, 1910 mConfiguration.densityDpi, mConfiguration.keyboard, 1911 keyboardHidden, mConfiguration.navigation, width, height, 1912 mConfiguration.smallestScreenWidthDp, 1913 mConfiguration.screenWidthDp, mConfiguration.screenHeightDp, 1914 mConfiguration.screenLayout, mConfiguration.uiMode, 1915 Build.VERSION.RESOURCES_SDK_INT); 1916 1917 if (DEBUG_CONFIG) { 1918 Slog.i(TAG, "**** Updating config of " + this + ": final config is " + mConfiguration 1919 + " final compat is " + mCompatibilityInfo); 1920 } 1921 1922 clearDrawableCachesLocked(mDrawableCache, configChanges); 1923 clearDrawableCachesLocked(mColorDrawableCache, configChanges); 1924 mColorStateListCache.onConfigurationChange(configChanges); 1925 mAnimatorCache.onConfigurationChange(configChanges); 1926 mStateListAnimatorCache.onConfigurationChange(configChanges); 1927 1928 flushLayoutCache(); 1929 } 1930 synchronized (sSync) { 1931 if (mPluralRule != null) { 1932 mPluralRule = NativePluralRules.forLocale(config.locale); 1933 } 1934 } 1935 } 1936 1937 /** 1938 * Called by ConfigurationBoundResourceCacheTest via reflection. 1939 */ 1940 private int calcConfigChanges(Configuration config) { 1941 int configChanges = 0xfffffff; 1942 if (config != null) { 1943 mTmpConfig.setTo(config); 1944 int density = config.densityDpi; 1945 if (density == Configuration.DENSITY_DPI_UNDEFINED) { 1946 density = mMetrics.noncompatDensityDpi; 1947 } 1948 1949 mCompatibilityInfo.applyToConfiguration(density, mTmpConfig); 1950 1951 if (mTmpConfig.locale == null) { 1952 mTmpConfig.locale = Locale.getDefault(); 1953 mTmpConfig.setLayoutDirection(mTmpConfig.locale); 1954 } 1955 configChanges = mConfiguration.updateFrom(mTmpConfig); 1956 configChanges = ActivityInfo.activityInfoConfigToNative(configChanges); 1957 } 1958 return configChanges; 1959 } 1960 1961 private void clearDrawableCachesLocked( 1962 ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches, 1963 int configChanges) { 1964 final int N = caches.size(); 1965 for (int i = 0; i < N; i++) { 1966 clearDrawableCacheLocked(caches.valueAt(i), configChanges); 1967 } 1968 } 1969 1970 private void clearDrawableCacheLocked( 1971 LongSparseArray<WeakReference<ConstantState>> cache, int configChanges) { 1972 if (DEBUG_CONFIG) { 1973 Log.d(TAG, "Cleaning up drawables config changes: 0x" 1974 + Integer.toHexString(configChanges)); 1975 } 1976 final int N = cache.size(); 1977 for (int i = 0; i < N; i++) { 1978 final WeakReference<ConstantState> ref = cache.valueAt(i); 1979 if (ref != null) { 1980 final ConstantState cs = ref.get(); 1981 if (cs != null) { 1982 if (Configuration.needNewResources( 1983 configChanges, cs.getChangingConfigurations())) { 1984 if (DEBUG_CONFIG) { 1985 Log.d(TAG, "FLUSHING #0x" 1986 + Long.toHexString(cache.keyAt(i)) 1987 + " / " + cs + " with changes: 0x" 1988 + Integer.toHexString(cs.getChangingConfigurations())); 1989 } 1990 cache.setValueAt(i, null); 1991 } else if (DEBUG_CONFIG) { 1992 Log.d(TAG, "(Keeping #0x" 1993 + Long.toHexString(cache.keyAt(i)) 1994 + " / " + cs + " with changes: 0x" 1995 + Integer.toHexString(cs.getChangingConfigurations()) 1996 + ")"); 1997 } 1998 } 1999 } 2000 } 2001 } 2002 2003 /** 2004 * {@code Locale.toLanguageTag} will transform the obsolete (and deprecated) 2005 * language codes "in", "ji" and "iw" to "id", "yi" and "he" respectively. 2006 * 2007 * All released versions of android prior to "L" used the deprecated language 2008 * tags, so we will need to support them for backwards compatibility. 2009 * 2010 * Note that this conversion needs to take place *after* the call to 2011 * {@code toLanguageTag} because that will convert all the deprecated codes to 2012 * the new ones, even if they're set manually. 2013 */ 2014 private static String adjustLanguageTag(String languageTag) { 2015 final int separator = languageTag.indexOf('-'); 2016 final String language; 2017 final String remainder; 2018 2019 if (separator == -1) { 2020 language = languageTag; 2021 remainder = ""; 2022 } else { 2023 language = languageTag.substring(0, separator); 2024 remainder = languageTag.substring(separator); 2025 } 2026 2027 return Locale.adjustLanguageCode(language) + remainder; 2028 } 2029 2030 /** 2031 * Update the system resources configuration if they have previously 2032 * been initialized. 2033 * 2034 * @hide 2035 */ 2036 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics, 2037 CompatibilityInfo compat) { 2038 if (mSystem != null) { 2039 mSystem.updateConfiguration(config, metrics, compat); 2040 //Log.i(TAG, "Updated system resources " + mSystem 2041 // + ": " + mSystem.getConfiguration()); 2042 } 2043 } 2044 2045 /** 2046 * Return the current display metrics that are in effect for this resource 2047 * object. The returned object should be treated as read-only. 2048 * 2049 * @return The resource's current display metrics. 2050 */ 2051 public DisplayMetrics getDisplayMetrics() { 2052 if (DEBUG_CONFIG) Slog.v(TAG, "Returning DisplayMetrics: " + mMetrics.widthPixels 2053 + "x" + mMetrics.heightPixels + " " + mMetrics.density); 2054 return mMetrics; 2055 } 2056 2057 /** 2058 * Return the current configuration that is in effect for this resource 2059 * object. The returned object should be treated as read-only. 2060 * 2061 * @return The resource's current configuration. 2062 */ 2063 public Configuration getConfiguration() { 2064 return mConfiguration; 2065 } 2066 2067 /** 2068 * Return the compatibility mode information for the application. 2069 * The returned object should be treated as read-only. 2070 * 2071 * @return compatibility info. 2072 * @hide 2073 */ 2074 public CompatibilityInfo getCompatibilityInfo() { 2075 return mCompatibilityInfo; 2076 } 2077 2078 /** 2079 * This is just for testing. 2080 * @hide 2081 */ 2082 public void setCompatibilityInfo(CompatibilityInfo ci) { 2083 if (ci != null) { 2084 mCompatibilityInfo = ci; 2085 updateConfiguration(mConfiguration, mMetrics); 2086 } 2087 } 2088 2089 /** 2090 * Return a resource identifier for the given resource name. A fully 2091 * qualified resource name is of the form "package:type/entry". The first 2092 * two components (package and type) are optional if defType and 2093 * defPackage, respectively, are specified here. 2094 * 2095 * <p>Note: use of this function is discouraged. It is much more 2096 * efficient to retrieve resources by identifier than by name. 2097 * 2098 * @param name The name of the desired resource. 2099 * @param defType Optional default resource type to find, if "type/" is 2100 * not included in the name. Can be null to require an 2101 * explicit type. 2102 * @param defPackage Optional default package to find, if "package:" is 2103 * not included in the name. Can be null to require an 2104 * explicit package. 2105 * 2106 * @return int The associated resource identifier. Returns 0 if no such 2107 * resource was found. (0 is not a valid resource ID.) 2108 */ 2109 public int getIdentifier(String name, String defType, String defPackage) { 2110 if (name == null) { 2111 throw new NullPointerException("name is null"); 2112 } 2113 try { 2114 return Integer.parseInt(name); 2115 } catch (Exception e) { 2116 // Ignore 2117 } 2118 return mAssets.getResourceIdentifier(name, defType, defPackage); 2119 } 2120 2121 /** 2122 * Return true if given resource identifier includes a package. 2123 * 2124 * @hide 2125 */ 2126 public static boolean resourceHasPackage(@AnyRes int resid) { 2127 return (resid >>> 24) != 0; 2128 } 2129 2130 /** 2131 * Return the full name for a given resource identifier. This name is 2132 * a single string of the form "package:type/entry". 2133 * 2134 * @param resid The resource identifier whose name is to be retrieved. 2135 * 2136 * @return A string holding the name of the resource. 2137 * 2138 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2139 * 2140 * @see #getResourcePackageName 2141 * @see #getResourceTypeName 2142 * @see #getResourceEntryName 2143 */ 2144 public String getResourceName(@AnyRes int resid) throws NotFoundException { 2145 String str = mAssets.getResourceName(resid); 2146 if (str != null) return str; 2147 throw new NotFoundException("Unable to find resource ID #0x" 2148 + Integer.toHexString(resid)); 2149 } 2150 2151 /** 2152 * Return the package name for a given resource identifier. 2153 * 2154 * @param resid The resource identifier whose package name is to be 2155 * retrieved. 2156 * 2157 * @return A string holding the package name of the resource. 2158 * 2159 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2160 * 2161 * @see #getResourceName 2162 */ 2163 public String getResourcePackageName(@AnyRes int resid) throws NotFoundException { 2164 String str = mAssets.getResourcePackageName(resid); 2165 if (str != null) return str; 2166 throw new NotFoundException("Unable to find resource ID #0x" 2167 + Integer.toHexString(resid)); 2168 } 2169 2170 /** 2171 * Return the type name for a given resource identifier. 2172 * 2173 * @param resid The resource identifier whose type name is to be 2174 * retrieved. 2175 * 2176 * @return A string holding the type name of the resource. 2177 * 2178 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2179 * 2180 * @see #getResourceName 2181 */ 2182 public String getResourceTypeName(@AnyRes int resid) throws NotFoundException { 2183 String str = mAssets.getResourceTypeName(resid); 2184 if (str != null) return str; 2185 throw new NotFoundException("Unable to find resource ID #0x" 2186 + Integer.toHexString(resid)); 2187 } 2188 2189 /** 2190 * Return the entry name for a given resource identifier. 2191 * 2192 * @param resid The resource identifier whose entry name is to be 2193 * retrieved. 2194 * 2195 * @return A string holding the entry name of the resource. 2196 * 2197 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2198 * 2199 * @see #getResourceName 2200 */ 2201 public String getResourceEntryName(@AnyRes int resid) throws NotFoundException { 2202 String str = mAssets.getResourceEntryName(resid); 2203 if (str != null) return str; 2204 throw new NotFoundException("Unable to find resource ID #0x" 2205 + Integer.toHexString(resid)); 2206 } 2207 2208 /** 2209 * Parse a series of {@link android.R.styleable#Extra <extra>} tags from 2210 * an XML file. You call this when you are at the parent tag of the 2211 * extra tags, and it will return once all of the child tags have been parsed. 2212 * This will call {@link #parseBundleExtra} for each extra tag encountered. 2213 * 2214 * @param parser The parser from which to retrieve the extras. 2215 * @param outBundle A Bundle in which to place all parsed extras. 2216 * @throws XmlPullParserException 2217 * @throws IOException 2218 */ 2219 public void parseBundleExtras(XmlResourceParser parser, Bundle outBundle) 2220 throws XmlPullParserException, IOException { 2221 int outerDepth = parser.getDepth(); 2222 int type; 2223 while ((type=parser.next()) != XmlPullParser.END_DOCUMENT 2224 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 2225 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 2226 continue; 2227 } 2228 2229 String nodeName = parser.getName(); 2230 if (nodeName.equals("extra")) { 2231 parseBundleExtra("extra", parser, outBundle); 2232 XmlUtils.skipCurrentTag(parser); 2233 2234 } else { 2235 XmlUtils.skipCurrentTag(parser); 2236 } 2237 } 2238 } 2239 2240 /** 2241 * Parse a name/value pair out of an XML tag holding that data. The 2242 * AttributeSet must be holding the data defined by 2243 * {@link android.R.styleable#Extra}. The following value types are supported: 2244 * <ul> 2245 * <li> {@link TypedValue#TYPE_STRING}: 2246 * {@link Bundle#putCharSequence Bundle.putCharSequence()} 2247 * <li> {@link TypedValue#TYPE_INT_BOOLEAN}: 2248 * {@link Bundle#putCharSequence Bundle.putBoolean()} 2249 * <li> {@link TypedValue#TYPE_FIRST_INT}-{@link TypedValue#TYPE_LAST_INT}: 2250 * {@link Bundle#putCharSequence Bundle.putBoolean()} 2251 * <li> {@link TypedValue#TYPE_FLOAT}: 2252 * {@link Bundle#putCharSequence Bundle.putFloat()} 2253 * </ul> 2254 * 2255 * @param tagName The name of the tag these attributes come from; this is 2256 * only used for reporting error messages. 2257 * @param attrs The attributes from which to retrieve the name/value pair. 2258 * @param outBundle The Bundle in which to place the parsed value. 2259 * @throws XmlPullParserException If the attributes are not valid. 2260 */ 2261 public void parseBundleExtra(String tagName, AttributeSet attrs, 2262 Bundle outBundle) throws XmlPullParserException { 2263 TypedArray sa = obtainAttributes(attrs, 2264 com.android.internal.R.styleable.Extra); 2265 2266 String name = sa.getString( 2267 com.android.internal.R.styleable.Extra_name); 2268 if (name == null) { 2269 sa.recycle(); 2270 throw new XmlPullParserException("<" + tagName 2271 + "> requires an android:name attribute at " 2272 + attrs.getPositionDescription()); 2273 } 2274 2275 TypedValue v = sa.peekValue( 2276 com.android.internal.R.styleable.Extra_value); 2277 if (v != null) { 2278 if (v.type == TypedValue.TYPE_STRING) { 2279 CharSequence cs = v.coerceToString(); 2280 outBundle.putCharSequence(name, cs); 2281 } else if (v.type == TypedValue.TYPE_INT_BOOLEAN) { 2282 outBundle.putBoolean(name, v.data != 0); 2283 } else if (v.type >= TypedValue.TYPE_FIRST_INT 2284 && v.type <= TypedValue.TYPE_LAST_INT) { 2285 outBundle.putInt(name, v.data); 2286 } else if (v.type == TypedValue.TYPE_FLOAT) { 2287 outBundle.putFloat(name, v.getFloat()); 2288 } else { 2289 sa.recycle(); 2290 throw new XmlPullParserException("<" + tagName 2291 + "> only supports string, integer, float, color, and boolean at " 2292 + attrs.getPositionDescription()); 2293 } 2294 } else { 2295 sa.recycle(); 2296 throw new XmlPullParserException("<" + tagName 2297 + "> requires an android:value or android:resource attribute at " 2298 + attrs.getPositionDescription()); 2299 } 2300 2301 sa.recycle(); 2302 } 2303 2304 /** 2305 * Retrieve underlying AssetManager storage for these resources. 2306 */ 2307 public final AssetManager getAssets() { 2308 return mAssets; 2309 } 2310 2311 /** 2312 * Call this to remove all cached loaded layout resources from the 2313 * Resources object. Only intended for use with performance testing 2314 * tools. 2315 */ 2316 public final void flushLayoutCache() { 2317 synchronized (mCachedXmlBlockIds) { 2318 // First see if this block is in our cache. 2319 final int num = mCachedXmlBlockIds.length; 2320 for (int i=0; i<num; i++) { 2321 mCachedXmlBlockIds[i] = -0; 2322 XmlBlock oldBlock = mCachedXmlBlocks[i]; 2323 if (oldBlock != null) { 2324 oldBlock.close(); 2325 } 2326 mCachedXmlBlocks[i] = null; 2327 } 2328 } 2329 } 2330 2331 /** 2332 * Start preloading of resource data using this Resources object. Only 2333 * for use by the zygote process for loading common system resources. 2334 * {@hide} 2335 */ 2336 public final void startPreloading() { 2337 synchronized (sSync) { 2338 if (sPreloaded) { 2339 throw new IllegalStateException("Resources already preloaded"); 2340 } 2341 sPreloaded = true; 2342 mPreloading = true; 2343 sPreloadedDensity = DisplayMetrics.DENSITY_DEVICE; 2344 mConfiguration.densityDpi = sPreloadedDensity; 2345 updateConfiguration(null, null); 2346 } 2347 } 2348 2349 /** 2350 * Called by zygote when it is done preloading resources, to change back 2351 * to normal Resources operation. 2352 */ 2353 public final void finishPreloading() { 2354 if (mPreloading) { 2355 mPreloading = false; 2356 flushLayoutCache(); 2357 } 2358 } 2359 2360 /** 2361 * @hide 2362 */ 2363 public LongSparseArray<ConstantState> getPreloadedDrawables() { 2364 return sPreloadedDrawables[0]; 2365 } 2366 2367 private boolean verifyPreloadConfig(int changingConfigurations, int allowVarying, 2368 int resourceId, String name) { 2369 // We allow preloading of resources even if they vary by font scale (which 2370 // doesn't impact resource selection) or density (which we handle specially by 2371 // simply turning off all preloading), as well as any other configs specified 2372 // by the caller. 2373 if (((changingConfigurations&~(ActivityInfo.CONFIG_FONT_SCALE | 2374 ActivityInfo.CONFIG_DENSITY)) & ~allowVarying) != 0) { 2375 String resName; 2376 try { 2377 resName = getResourceName(resourceId); 2378 } catch (NotFoundException e) { 2379 resName = "?"; 2380 } 2381 // This should never happen in production, so we should log a 2382 // warning even if we're not debugging. 2383 Log.w(TAG, "Preloaded " + name + " resource #0x" 2384 + Integer.toHexString(resourceId) 2385 + " (" + resName + ") that varies with configuration!!"); 2386 return false; 2387 } 2388 if (TRACE_FOR_PRELOAD) { 2389 String resName; 2390 try { 2391 resName = getResourceName(resourceId); 2392 } catch (NotFoundException e) { 2393 resName = "?"; 2394 } 2395 Log.w(TAG, "Preloading " + name + " resource #0x" 2396 + Integer.toHexString(resourceId) 2397 + " (" + resName + ")"); 2398 } 2399 return true; 2400 } 2401 2402 /*package*/ Drawable loadDrawable(TypedValue value, int id, Theme theme) throws NotFoundException { 2403 if (TRACE_FOR_PRELOAD) { 2404 // Log only framework resources 2405 if ((id >>> 24) == 0x1) { 2406 final String name = getResourceName(id); 2407 if (name != null) { 2408 Log.d("PreloadDrawable", name); 2409 } 2410 } 2411 } 2412 2413 final boolean isColorDrawable; 2414 final ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches; 2415 final long key; 2416 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT 2417 && value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2418 isColorDrawable = true; 2419 caches = mColorDrawableCache; 2420 key = value.data; 2421 } else { 2422 isColorDrawable = false; 2423 caches = mDrawableCache; 2424 key = (((long) value.assetCookie) << 32) | value.data; 2425 } 2426 2427 // First, check whether we have a cached version of this drawable 2428 // that was inflated against the specified theme. 2429 if (!mPreloading) { 2430 final Drawable cachedDrawable = getCachedDrawable(caches, key, theme); 2431 if (cachedDrawable != null) { 2432 return cachedDrawable; 2433 } 2434 } 2435 2436 // Next, check preloaded drawables. These are unthemed but may have 2437 // themeable attributes. 2438 final ConstantState cs; 2439 if (isColorDrawable) { 2440 cs = sPreloadedColorDrawables.get(key); 2441 } else { 2442 cs = sPreloadedDrawables[mConfiguration.getLayoutDirection()].get(key); 2443 } 2444 2445 final Drawable dr; 2446 if (cs != null) { 2447 final Drawable clonedDr = cs.newDrawable(this); 2448 if (theme != null) { 2449 dr = clonedDr.mutate(); 2450 dr.applyTheme(theme); 2451 dr.clearMutated(); 2452 } else { 2453 dr = clonedDr; 2454 } 2455 } else if (isColorDrawable) { 2456 dr = new ColorDrawable(value.data); 2457 } else { 2458 dr = loadDrawableForCookie(value, id, theme); 2459 } 2460 2461 // If we were able to obtain a drawable, store it in the appropriate 2462 // cache (either preload or themed). 2463 if (dr != null) { 2464 dr.setChangingConfigurations(value.changingConfigurations); 2465 cacheDrawable(value, theme, isColorDrawable, caches, key, dr); 2466 } 2467 2468 return dr; 2469 } 2470 2471 private void cacheDrawable(TypedValue value, Theme theme, boolean isColorDrawable, 2472 ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches, 2473 long key, Drawable dr) { 2474 final ConstantState cs = dr.getConstantState(); 2475 if (cs == null) { 2476 return; 2477 } 2478 2479 if (mPreloading) { 2480 // Preloaded drawables never have a theme, but may be themeable. 2481 final int changingConfigs = cs.getChangingConfigurations(); 2482 if (isColorDrawable) { 2483 if (verifyPreloadConfig(changingConfigs, 0, value.resourceId, "drawable")) { 2484 sPreloadedColorDrawables.put(key, cs); 2485 } 2486 } else { 2487 if (verifyPreloadConfig( 2488 changingConfigs, LAYOUT_DIR_CONFIG, value.resourceId, "drawable")) { 2489 if ((changingConfigs & LAYOUT_DIR_CONFIG) == 0) { 2490 // If this resource does not vary based on layout direction, 2491 // we can put it in all of the preload maps. 2492 sPreloadedDrawables[0].put(key, cs); 2493 sPreloadedDrawables[1].put(key, cs); 2494 } else { 2495 // Otherwise, only in the layout dir we loaded it for. 2496 sPreloadedDrawables[mConfiguration.getLayoutDirection()].put(key, cs); 2497 } 2498 } 2499 } 2500 } else { 2501 synchronized (mAccessLock) { 2502 final String themeKey = theme == null ? "" : theme.mKey; 2503 LongSparseArray<WeakReference<ConstantState>> themedCache = caches.get(themeKey); 2504 if (themedCache == null) { 2505 // Clean out the caches before we add more. This shouldn't 2506 // happen very often. 2507 pruneCaches(caches); 2508 themedCache = new LongSparseArray<WeakReference<ConstantState>>(1); 2509 caches.put(themeKey, themedCache); 2510 } 2511 themedCache.put(key, new WeakReference<ConstantState>(cs)); 2512 } 2513 } 2514 } 2515 2516 /** 2517 * Prunes empty caches from the cache map. 2518 * 2519 * @param caches The map of caches to prune. 2520 */ 2521 private void pruneCaches(ArrayMap<String, 2522 LongSparseArray<WeakReference<ConstantState>>> caches) { 2523 final int N = caches.size(); 2524 for (int i = N - 1; i >= 0; i--) { 2525 final LongSparseArray<WeakReference<ConstantState>> cache = caches.valueAt(i); 2526 if (pruneCache(cache)) { 2527 caches.removeAt(i); 2528 } 2529 } 2530 } 2531 2532 /** 2533 * Prunes obsolete weak references from a cache, returning {@code true} if 2534 * the cache is empty and should be removed. 2535 * 2536 * @param cache The cache of weak references to prune. 2537 * @return {@code true} if the cache is empty and should be removed. 2538 */ 2539 private boolean pruneCache(LongSparseArray<WeakReference<ConstantState>> cache) { 2540 final int N = cache.size(); 2541 for (int i = N - 1; i >= 0; i--) { 2542 final WeakReference entry = cache.valueAt(i); 2543 if (entry == null || entry.get() == null) { 2544 cache.removeAt(i); 2545 } 2546 } 2547 return cache.size() == 0; 2548 } 2549 2550 /** 2551 * Loads a drawable from XML or resources stream. 2552 */ 2553 private Drawable loadDrawableForCookie(TypedValue value, int id, Theme theme) { 2554 if (value.string == null) { 2555 throw new NotFoundException("Resource \"" + getResourceName(id) + "\" (" 2556 + Integer.toHexString(id) + ") is not a Drawable (color or path): " + value); 2557 } 2558 2559 final String file = value.string.toString(); 2560 2561 if (TRACE_FOR_MISS_PRELOAD) { 2562 // Log only framework resources 2563 if ((id >>> 24) == 0x1) { 2564 final String name = getResourceName(id); 2565 if (name != null) { 2566 Log.d(TAG, "Loading framework drawable #" + Integer.toHexString(id) 2567 + ": " + name + " at " + file); 2568 } 2569 } 2570 } 2571 2572 if (DEBUG_LOAD) { 2573 Log.v(TAG, "Loading drawable for cookie " + value.assetCookie + ": " + file); 2574 } 2575 2576 final Drawable dr; 2577 2578 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 2579 try { 2580 if (file.endsWith(".xml")) { 2581 final XmlResourceParser rp = loadXmlResourceParser( 2582 file, id, value.assetCookie, "drawable"); 2583 dr = Drawable.createFromXml(this, rp, theme); 2584 rp.close(); 2585 } else { 2586 final InputStream is = mAssets.openNonAsset( 2587 value.assetCookie, file, AssetManager.ACCESS_STREAMING); 2588 dr = Drawable.createFromResourceStream(this, value, is, file, null); 2589 is.close(); 2590 } 2591 } catch (Exception e) { 2592 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2593 final NotFoundException rnf = new NotFoundException( 2594 "File " + file + " from drawable resource ID #0x" + Integer.toHexString(id)); 2595 rnf.initCause(e); 2596 throw rnf; 2597 } 2598 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2599 2600 return dr; 2601 } 2602 2603 private Drawable getCachedDrawable( 2604 ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches, 2605 long key, Theme theme) { 2606 synchronized (mAccessLock) { 2607 final String themeKey = theme != null ? theme.mKey : ""; 2608 final LongSparseArray<WeakReference<ConstantState>> themedCache = caches.get(themeKey); 2609 if (themedCache != null) { 2610 final Drawable themedDrawable = getCachedDrawableLocked(themedCache, key); 2611 if (themedDrawable != null) { 2612 return themedDrawable; 2613 } 2614 } 2615 2616 // No cached drawable, we'll need to create a new one. 2617 return null; 2618 } 2619 } 2620 2621 private ConstantState getConstantStateLocked( 2622 LongSparseArray<WeakReference<ConstantState>> drawableCache, long key) { 2623 final WeakReference<ConstantState> wr = drawableCache.get(key); 2624 if (wr != null) { // we have the key 2625 final ConstantState entry = wr.get(); 2626 if (entry != null) { 2627 //Log.i(TAG, "Returning cached drawable @ #" + 2628 // Integer.toHexString(((Integer)key).intValue()) 2629 // + " in " + this + ": " + entry); 2630 return entry; 2631 } else { // our entry has been purged 2632 drawableCache.delete(key); 2633 } 2634 } 2635 return null; 2636 } 2637 2638 private Drawable getCachedDrawableLocked( 2639 LongSparseArray<WeakReference<ConstantState>> drawableCache, long key) { 2640 final ConstantState entry = getConstantStateLocked(drawableCache, key); 2641 if (entry != null) { 2642 return entry.newDrawable(this); 2643 } 2644 return null; 2645 } 2646 2647 @Nullable 2648 ColorStateList loadColorStateList(TypedValue value, int id, Theme theme) 2649 throws NotFoundException { 2650 if (TRACE_FOR_PRELOAD) { 2651 // Log only framework resources 2652 if ((id >>> 24) == 0x1) { 2653 final String name = getResourceName(id); 2654 if (name != null) android.util.Log.d("PreloadColorStateList", name); 2655 } 2656 } 2657 2658 final long key = (((long) value.assetCookie) << 32) | value.data; 2659 2660 ColorStateList csl; 2661 2662 // Handle inline color definitions. 2663 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT 2664 && value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2665 final ColorStateListFactory factory = sPreloadedColorStateLists.get(key); 2666 if (factory != null) { 2667 return factory.newInstance(); 2668 } 2669 2670 csl = ColorStateList.valueOf(value.data); 2671 2672 if (mPreloading) { 2673 if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId, 2674 "color")) { 2675 sPreloadedColorStateLists.put(key, csl.getFactory()); 2676 } 2677 } 2678 2679 return csl; 2680 } 2681 2682 final ConfigurationBoundResourceCache<ColorStateList> cache = mColorStateListCache; 2683 2684 csl = cache.get(key, theme); 2685 if (csl != null) { 2686 return csl; 2687 } 2688 2689 final ColorStateListFactory factory = sPreloadedColorStateLists.get(key); 2690 if (factory != null) { 2691 csl = factory.newInstance(this, theme); 2692 } 2693 2694 if (csl == null) { 2695 csl = loadColorStateListForCookie(value, id, theme); 2696 } 2697 2698 if (csl != null) { 2699 if (mPreloading) { 2700 if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId, 2701 "color")) { 2702 sPreloadedColorStateLists.put(key, csl.getFactory()); 2703 } 2704 } else { 2705 cache.put(key, theme, csl.getFactory()); 2706 } 2707 } 2708 2709 return csl; 2710 } 2711 2712 private ColorStateList loadColorStateListForCookie(TypedValue value, int id, Theme theme) { 2713 if (value.string == null) { 2714 throw new UnsupportedOperationException( 2715 "Can't convert to color state list: type=0x" + value.type); 2716 } 2717 2718 final String file = value.string.toString(); 2719 2720 if (TRACE_FOR_MISS_PRELOAD) { 2721 // Log only framework resources 2722 if ((id >>> 24) == 0x1) { 2723 final String name = getResourceName(id); 2724 if (name != null) { 2725 Log.d(TAG, "Loading framework color state list #" + Integer.toHexString(id) 2726 + ": " + name + " at " + file); 2727 } 2728 } 2729 } 2730 2731 if (DEBUG_LOAD) { 2732 Log.v(TAG, "Loading color state list for cookie " + value.assetCookie + ": " + file); 2733 } 2734 2735 final ColorStateList csl; 2736 2737 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 2738 if (file.endsWith(".xml")) { 2739 try { 2740 final XmlResourceParser rp = loadXmlResourceParser( 2741 file, id, value.assetCookie, "colorstatelist"); 2742 csl = ColorStateList.createFromXml(this, rp, theme); 2743 rp.close(); 2744 } catch (Exception e) { 2745 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2746 final NotFoundException rnf = new NotFoundException( 2747 "File " + file + " from color state list resource ID #0x" 2748 + Integer.toHexString(id)); 2749 rnf.initCause(e); 2750 throw rnf; 2751 } 2752 } else { 2753 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2754 throw new NotFoundException( 2755 "File " + file + " from drawable resource ID #0x" 2756 + Integer.toHexString(id) + ": .xml extension required"); 2757 } 2758 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2759 2760 return csl; 2761 } 2762 2763 /*package*/ XmlResourceParser loadXmlResourceParser(int id, String type) 2764 throws NotFoundException { 2765 synchronized (mAccessLock) { 2766 TypedValue value = mTmpValue; 2767 if (value == null) { 2768 mTmpValue = value = new TypedValue(); 2769 } 2770 getValue(id, value, true); 2771 if (value.type == TypedValue.TYPE_STRING) { 2772 return loadXmlResourceParser(value.string.toString(), id, 2773 value.assetCookie, type); 2774 } 2775 throw new NotFoundException( 2776 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 2777 + Integer.toHexString(value.type) + " is not valid"); 2778 } 2779 } 2780 2781 /*package*/ XmlResourceParser loadXmlResourceParser(String file, int id, 2782 int assetCookie, String type) throws NotFoundException { 2783 if (id != 0) { 2784 try { 2785 // These may be compiled... 2786 synchronized (mCachedXmlBlockIds) { 2787 // First see if this block is in our cache. 2788 final int num = mCachedXmlBlockIds.length; 2789 for (int i=0; i<num; i++) { 2790 if (mCachedXmlBlockIds[i] == id) { 2791 //System.out.println("**** REUSING XML BLOCK! id=" 2792 // + id + ", index=" + i); 2793 return mCachedXmlBlocks[i].newParser(); 2794 } 2795 } 2796 2797 // Not in the cache, create a new block and put it at 2798 // the next slot in the cache. 2799 XmlBlock block = mAssets.openXmlBlockAsset( 2800 assetCookie, file); 2801 if (block != null) { 2802 int pos = mLastCachedXmlBlockIndex+1; 2803 if (pos >= num) pos = 0; 2804 mLastCachedXmlBlockIndex = pos; 2805 XmlBlock oldBlock = mCachedXmlBlocks[pos]; 2806 if (oldBlock != null) { 2807 oldBlock.close(); 2808 } 2809 mCachedXmlBlockIds[pos] = id; 2810 mCachedXmlBlocks[pos] = block; 2811 //System.out.println("**** CACHING NEW XML BLOCK! id=" 2812 // + id + ", index=" + pos); 2813 return block.newParser(); 2814 } 2815 } 2816 } catch (Exception e) { 2817 NotFoundException rnf = new NotFoundException( 2818 "File " + file + " from xml type " + type + " resource ID #0x" 2819 + Integer.toHexString(id)); 2820 rnf.initCause(e); 2821 throw rnf; 2822 } 2823 } 2824 2825 throw new NotFoundException( 2826 "File " + file + " from xml type " + type + " resource ID #0x" 2827 + Integer.toHexString(id)); 2828 } 2829 2830 /*package*/ void recycleCachedStyledAttributes(TypedArray attrs) { 2831 synchronized (mAccessLock) { 2832 final TypedArray cached = mCachedStyledAttributes; 2833 if (cached == null || cached.mData.length < attrs.mData.length) { 2834 mCachedStyledAttributes = attrs; 2835 } 2836 } 2837 } 2838 2839 /** 2840 * Obtains styled attributes from the theme, if available, or unstyled 2841 * resources if the theme is null. 2842 * 2843 * @hide 2844 */ 2845 public static TypedArray obtainAttributes( 2846 Resources res, Theme theme, AttributeSet set, int[] attrs) { 2847 if (theme == null) { 2848 return res.obtainAttributes(set, attrs); 2849 } 2850 return theme.obtainStyledAttributes(set, attrs, 0, 0); 2851 } 2852 2853 private Resources() { 2854 mAssets = AssetManager.getSystem(); 2855 // NOTE: Intentionally leaving this uninitialized (all values set 2856 // to zero), so that anyone who tries to do something that requires 2857 // metrics will get a very wrong value. 2858 mConfiguration.setToDefaults(); 2859 mMetrics.setToDefaults(); 2860 updateConfiguration(null, null); 2861 mAssets.ensureStringBlocks(); 2862 } 2863} 2864