Resources.java revision fb9236cb0c7bdad05ad01b722806edde7385b296
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.content.res; 18 19import android.animation.Animator; 20import android.animation.StateListAnimator; 21import android.annotation.AnimRes; 22import android.annotation.AnyRes; 23import android.annotation.ArrayRes; 24import android.annotation.AttrRes; 25import android.annotation.BoolRes; 26import android.annotation.ColorInt; 27import android.annotation.ColorRes; 28import android.annotation.DimenRes; 29import android.annotation.DrawableRes; 30import android.annotation.FractionRes; 31import android.annotation.IntegerRes; 32import android.annotation.LayoutRes; 33import android.annotation.NonNull; 34import android.annotation.Nullable; 35import android.annotation.PluralsRes; 36import android.annotation.RawRes; 37import android.annotation.StringRes; 38import android.annotation.StyleRes; 39import android.annotation.StyleableRes; 40import android.annotation.XmlRes; 41import android.content.pm.ActivityInfo; 42import android.graphics.Movie; 43import android.graphics.drawable.ColorDrawable; 44import android.graphics.drawable.Drawable; 45import android.graphics.drawable.Drawable.ConstantState; 46import android.graphics.drawable.DrawableInflater; 47import android.icu.text.PluralRules; 48import android.os.Build; 49import android.os.Bundle; 50import android.os.Trace; 51import android.util.AttributeSet; 52import android.util.DisplayMetrics; 53import android.util.LocaleList; 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; 60import android.view.ViewHierarchyEncoder; 61 62import com.android.internal.util.GrowingArrayUtils; 63import com.android.internal.util.XmlUtils; 64 65import org.xmlpull.v1.XmlPullParser; 66import org.xmlpull.v1.XmlPullParserException; 67 68import java.io.IOException; 69import java.io.InputStream; 70import java.util.Locale; 71 72/** 73 * Class for accessing an application's resources. This sits on top of the 74 * asset manager of the application (accessible through {@link #getAssets}) and 75 * provides a high-level API for getting typed data from the assets. 76 * 77 * <p>The Android resource system keeps track of all non-code assets associated with an 78 * application. You can use this class to access your application's resources. You can generally 79 * acquire the {@link android.content.res.Resources} instance associated with your application 80 * with {@link android.content.Context#getResources getResources()}.</p> 81 * 82 * <p>The Android SDK tools compile your application's resources into the application binary 83 * at build time. To use a resource, you must install it correctly in the source tree (inside 84 * your project's {@code res/} directory) and build your application. As part of the build 85 * process, the SDK tools generate symbols for each resource, which you can use in your application 86 * code to access the resources.</p> 87 * 88 * <p>Using application resources makes it easy to update various characteristics of your 89 * application without modifying code, and—by providing sets of alternative 90 * resources—enables you to optimize your application for a variety of device configurations 91 * (such as for different languages and screen sizes). This is an important aspect of developing 92 * Android applications that are compatible on different types of devices.</p> 93 * 94 * <p>For more information about using resources, see the documentation about <a 95 * href="{@docRoot}guide/topics/resources/index.html">Application Resources</a>.</p> 96 */ 97public class Resources { 98 static final String TAG = "Resources"; 99 100 private static final boolean DEBUG_LOAD = false; 101 private static final boolean DEBUG_CONFIG = false; 102 private static final boolean TRACE_FOR_PRELOAD = false; 103 private static final boolean TRACE_FOR_MISS_PRELOAD = false; 104 105 private static final int LAYOUT_DIR_CONFIG = ActivityInfo.activityInfoConfigToNative( 106 ActivityInfo.CONFIG_LAYOUT_DIRECTION); 107 108 private static final int ID_OTHER = 0x01000004; 109 110 private static final Object sSync = new Object(); 111 112 // Information about preloaded resources. Note that they are not 113 // protected by a lock, because while preloading in zygote we are all 114 // single-threaded, and after that these are immutable. 115 private static final LongSparseArray<ConstantState>[] sPreloadedDrawables; 116 private static final LongSparseArray<ConstantState> sPreloadedColorDrawables 117 = new LongSparseArray<>(); 118 private static final LongSparseArray<android.content.res.ConstantState<ColorStateList>> 119 sPreloadedColorStateLists = new LongSparseArray<>(); 120 121 // Pool of TypedArrays targeted to this Resources object. 122 final SynchronizedPool<TypedArray> mTypedArrayPool = new SynchronizedPool<>(5); 123 124 // Used by BridgeResources in layoutlib 125 static Resources mSystem = null; 126 127 private static boolean sPreloaded; 128 129 /** Lock object used to protect access to caches and configuration. */ 130 private final Object mAccessLock = new Object(); 131 132 // These are protected by mAccessLock. 133 private final Configuration mTmpConfig = new Configuration(); 134 private final DrawableCache mDrawableCache = new DrawableCache(this); 135 private final DrawableCache mColorDrawableCache = new DrawableCache(this); 136 private final ConfigurationBoundResourceCache<ColorStateList> mColorStateListCache = 137 new ConfigurationBoundResourceCache<>(this); 138 private final ConfigurationBoundResourceCache<Animator> mAnimatorCache = 139 new ConfigurationBoundResourceCache<>(this); 140 private final ConfigurationBoundResourceCache<StateListAnimator> mStateListAnimatorCache = 141 new ConfigurationBoundResourceCache<>(this); 142 143 /** Used to inflate drawable objects from XML. */ 144 private DrawableInflater mDrawableInflater; 145 146 /** Lock object used to protect access to {@link #mTmpValue}. */ 147 private final Object mTmpValueLock = new Object(); 148 149 /** Single-item pool used to minimize TypedValue allocations. */ 150 private TypedValue mTmpValue = new TypedValue(); 151 152 private boolean mPreloading; 153 154 private int mLastCachedXmlBlockIndex = -1; 155 private final int[] mCachedXmlBlockIds = { 0, 0, 0, 0 }; 156 private final XmlBlock[] mCachedXmlBlocks = new XmlBlock[4]; 157 158 final AssetManager mAssets; 159 final ClassLoader mClassLoader; 160 final DisplayMetrics mMetrics = new DisplayMetrics(); 161 162 private final Configuration mConfiguration = new Configuration(); 163 private Locale mResolvedLocale = null; 164 private PluralRules mPluralRule; 165 166 private CompatibilityInfo mCompatibilityInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 167 168 static { 169 sPreloadedDrawables = new LongSparseArray[2]; 170 sPreloadedDrawables[0] = new LongSparseArray<>(); 171 sPreloadedDrawables[1] = new LongSparseArray<>(); 172 } 173 174 /** 175 * Returns the most appropriate default theme for the specified target SDK version. 176 * <ul> 177 * <li>Below API 11: Gingerbread 178 * <li>APIs 11 thru 14: Holo 179 * <li>APIs 14 thru XX: Device default dark 180 * <li>API XX and above: Device default light with dark action bar 181 * </ul> 182 * 183 * @param curTheme The current theme, or 0 if not specified. 184 * @param targetSdkVersion The target SDK version. 185 * @return A theme resource identifier 186 * @hide 187 */ 188 public static int selectDefaultTheme(int curTheme, int targetSdkVersion) { 189 return selectSystemTheme(curTheme, targetSdkVersion, 190 com.android.internal.R.style.Theme, 191 com.android.internal.R.style.Theme_Holo, 192 com.android.internal.R.style.Theme_DeviceDefault, 193 com.android.internal.R.style.Theme_DeviceDefault_Light_DarkActionBar); 194 } 195 196 /** @hide */ 197 public static int selectSystemTheme(int curTheme, int targetSdkVersion, int orig, int holo, 198 int dark, int deviceDefault) { 199 if (curTheme != 0) { 200 return curTheme; 201 } 202 if (targetSdkVersion < Build.VERSION_CODES.HONEYCOMB) { 203 return orig; 204 } 205 if (targetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 206 return holo; 207 } 208 if (targetSdkVersion < Build.VERSION_CODES.CUR_DEVELOPMENT) { 209 return dark; 210 } 211 return deviceDefault; 212 } 213 214 /** 215 * @return the inflater used to create drawable objects 216 * @hide Pending API finalization. 217 */ 218 public final DrawableInflater getDrawableInflater() { 219 if (mDrawableInflater == null) { 220 mDrawableInflater = new DrawableInflater(this, mClassLoader); 221 } 222 return mDrawableInflater; 223 } 224 225 /** 226 * Used by AnimatorInflater. 227 * 228 * @hide 229 */ 230 public ConfigurationBoundResourceCache<Animator> getAnimatorCache() { 231 return mAnimatorCache; 232 } 233 234 /** 235 * Used by AnimatorInflater. 236 * 237 * @hide 238 */ 239 public ConfigurationBoundResourceCache<StateListAnimator> getStateListAnimatorCache() { 240 return mStateListAnimatorCache; 241 } 242 243 /** 244 * This exception is thrown by the resource APIs when a requested resource 245 * can not be found. 246 */ 247 public static class NotFoundException extends RuntimeException { 248 public NotFoundException() { 249 } 250 251 public NotFoundException(String name) { 252 super(name); 253 } 254 255 public NotFoundException(String name, Exception cause) { 256 super(name, cause); 257 } 258 } 259 260 /** 261 * Create a new Resources object on top of an existing set of assets in an 262 * AssetManager. 263 * 264 * @param assets Previously created AssetManager. 265 * @param metrics Current display metrics to consider when 266 * selecting/computing resource values. 267 * @param config Desired device configuration to consider when 268 * selecting/computing resource values (optional). 269 */ 270 public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config) { 271 this(assets, metrics, config, CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO, null); 272 } 273 274 /** 275 * Creates a new Resources object with CompatibilityInfo. 276 * 277 * @param assets Previously created AssetManager. 278 * @param metrics Current display metrics to consider when 279 * selecting/computing resource values. 280 * @param config Desired device configuration to consider when 281 * selecting/computing resource values (optional). 282 * @param compatInfo this resource's compatibility info. Must not be null. 283 * @param classLoader class loader for the package used to load custom 284 * resource classes, may be {@code null} to use system 285 * class loader 286 * @hide 287 */ 288 public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config, 289 CompatibilityInfo compatInfo, @Nullable ClassLoader classLoader) { 290 mAssets = assets; 291 mClassLoader = classLoader == null ? ClassLoader.getSystemClassLoader() : classLoader; 292 mMetrics.setToDefaults(); 293 if (compatInfo != null) { 294 mCompatibilityInfo = compatInfo; 295 } 296 updateConfiguration(config, metrics); 297 assets.ensureStringBlocks(); 298 } 299 300 /** 301 * Return a global shared Resources object that provides access to only 302 * system resources (no application resources), and is not configured for 303 * the current screen (can not use dimension units, does not change based 304 * on orientation, etc). 305 */ 306 public static Resources getSystem() { 307 synchronized (sSync) { 308 Resources ret = mSystem; 309 if (ret == null) { 310 ret = new Resources(); 311 mSystem = ret; 312 } 313 314 return ret; 315 } 316 } 317 318 /** 319 * Return the Locale resulting from locale negotiation between the Resources and the 320 * Configuration objects used to construct the Resources. The locale is used for retrieving 321 * resources as well as for determining plural rules. 322 */ 323 @NonNull 324 public Locale getResolvedLocale() { 325 return mResolvedLocale; 326 } 327 328 /** 329 * Return the string value associated with a particular resource ID. The 330 * returned object will be a String if this is a plain string; it will be 331 * some other type of CharSequence if it is styled. 332 * {@more} 333 * 334 * @param id The desired resource identifier, as generated by the aapt 335 * tool. This integer encodes the package, type, and resource 336 * entry. The value 0 is an invalid identifier. 337 * 338 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 339 * 340 * @return CharSequence The string data associated with the resource, plus 341 * possibly styled text information. 342 */ 343 public CharSequence getText(@StringRes int id) throws NotFoundException { 344 CharSequence res = mAssets.getResourceText(id); 345 if (res != null) { 346 return res; 347 } 348 throw new NotFoundException("String resource ID #0x" 349 + Integer.toHexString(id)); 350 } 351 352 /** 353 * Returns the character sequence necessary for grammatically correct pluralization 354 * of the given resource ID for the given quantity. 355 * Note that the character sequence is selected based solely on grammatical necessity, 356 * and that such rules differ between languages. Do not assume you know which string 357 * will be returned for a given quantity. See 358 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 359 * for more detail. 360 * 361 * @param id The desired resource identifier, as generated by the aapt 362 * tool. This integer encodes the package, type, and resource 363 * entry. The value 0 is an invalid identifier. 364 * @param quantity The number used to get the correct string for the current language's 365 * plural rules. 366 * 367 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 368 * 369 * @return CharSequence The string data associated with the resource, plus 370 * possibly styled text information. 371 */ 372 public CharSequence getQuantityText(@PluralsRes int id, int quantity) 373 throws NotFoundException { 374 PluralRules rule = getPluralRule(); 375 CharSequence res = mAssets.getResourceBagText(id, 376 attrForQuantityCode(rule.select(quantity))); 377 if (res != null) { 378 return res; 379 } 380 res = mAssets.getResourceBagText(id, ID_OTHER); 381 if (res != null) { 382 return res; 383 } 384 throw new NotFoundException("Plural resource ID #0x" + Integer.toHexString(id) 385 + " quantity=" + quantity 386 + " item=" + rule.select(quantity)); 387 } 388 389 private PluralRules getPluralRule() { 390 synchronized (sSync) { 391 if (mPluralRule == null) { 392 mPluralRule = PluralRules.forLocale(mResolvedLocale); 393 } 394 return mPluralRule; 395 } 396 } 397 398 private static int attrForQuantityCode(String quantityCode) { 399 switch (quantityCode) { 400 case PluralRules.KEYWORD_ZERO: return 0x01000005; 401 case PluralRules.KEYWORD_ONE: return 0x01000006; 402 case PluralRules.KEYWORD_TWO: return 0x01000007; 403 case PluralRules.KEYWORD_FEW: return 0x01000008; 404 case PluralRules.KEYWORD_MANY: return 0x01000009; 405 default: return ID_OTHER; 406 } 407 } 408 409 /** 410 * Return the string value associated with a particular resource ID. It 411 * will be stripped of any styled text information. 412 * {@more} 413 * 414 * @param id The desired resource identifier, as generated by the aapt 415 * tool. This integer encodes the package, type, and resource 416 * entry. The value 0 is an invalid identifier. 417 * 418 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 419 * 420 * @return String The string data associated with the resource, 421 * stripped of styled text information. 422 */ 423 @NonNull 424 public String getString(@StringRes int id) throws NotFoundException { 425 final CharSequence res = getText(id); 426 if (res != null) { 427 return res.toString(); 428 } 429 throw new NotFoundException("String resource ID #0x" 430 + Integer.toHexString(id)); 431 } 432 433 434 /** 435 * Return the string value associated with a particular resource ID, 436 * substituting the format arguments as defined in {@link java.util.Formatter} 437 * and {@link java.lang.String#format}. It will be stripped of any styled text 438 * information. 439 * {@more} 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 * 445 * @param formatArgs The format arguments that will be used for substitution. 446 * 447 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 448 * 449 * @return String The string data associated with the resource, 450 * stripped of styled text information. 451 */ 452 @NonNull 453 public String getString(@StringRes int id, Object... formatArgs) throws NotFoundException { 454 final String raw = getString(id); 455 return String.format(mResolvedLocale, raw, formatArgs); 456 } 457 458 /** 459 * Formats the string necessary for grammatically correct pluralization 460 * of the given resource ID for the given quantity, using the given arguments. 461 * Note that the string is selected based solely on grammatical necessity, 462 * and that such rules differ between languages. Do not assume you know which string 463 * will be returned for a given quantity. See 464 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 465 * for more detail. 466 * 467 * <p>Substitution of format arguments works as if using 468 * {@link java.util.Formatter} and {@link java.lang.String#format}. 469 * The resulting string will be stripped of any styled text information. 470 * 471 * @param id The desired resource identifier, as generated by the aapt 472 * tool. This integer encodes the package, type, and resource 473 * entry. The value 0 is an invalid identifier. 474 * @param quantity The number used to get the correct string for the current language's 475 * plural rules. 476 * @param formatArgs The format arguments that will be used for substitution. 477 * 478 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 479 * 480 * @return String The string data associated with the resource, 481 * stripped of styled text information. 482 */ 483 public String getQuantityString(@PluralsRes int id, int quantity, Object... formatArgs) 484 throws NotFoundException { 485 String raw = getQuantityText(id, quantity).toString(); 486 return String.format(mResolvedLocale, raw, formatArgs); 487 } 488 489 /** 490 * Returns the string necessary for grammatically correct pluralization 491 * of the given resource ID for the given quantity. 492 * Note that the string is selected based solely on grammatical necessity, 493 * and that such rules differ between languages. Do not assume you know which string 494 * will be returned for a given quantity. See 495 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 496 * for more detail. 497 * 498 * @param id The desired resource identifier, as generated by the aapt 499 * tool. This integer encodes the package, type, and resource 500 * entry. The value 0 is an invalid identifier. 501 * @param quantity The number used to get the correct string for the current language's 502 * plural rules. 503 * 504 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 505 * 506 * @return String The string data associated with the resource, 507 * stripped of styled text information. 508 */ 509 public String getQuantityString(@PluralsRes int id, int quantity) 510 throws NotFoundException { 511 return getQuantityText(id, quantity).toString(); 512 } 513 514 /** 515 * Return the string value associated with a particular resource ID. The 516 * returned object will be a String if this is a plain string; it will be 517 * some other type of CharSequence if it is styled. 518 * 519 * @param id The desired resource identifier, as generated by the aapt 520 * tool. This integer encodes the package, type, and resource 521 * entry. The value 0 is an invalid identifier. 522 * 523 * @param def The default CharSequence to return. 524 * 525 * @return CharSequence The string data associated with the resource, plus 526 * possibly styled text information, or def if id is 0 or not found. 527 */ 528 public CharSequence getText(@StringRes int id, CharSequence def) { 529 CharSequence res = id != 0 ? mAssets.getResourceText(id) : null; 530 return res != null ? res : def; 531 } 532 533 /** 534 * Return the styled text array associated with a particular resource ID. 535 * 536 * @param id The desired resource identifier, as generated by the aapt 537 * tool. This integer encodes the package, type, and resource 538 * entry. The value 0 is an invalid identifier. 539 * 540 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 541 * 542 * @return The styled text array associated with the resource. 543 */ 544 public CharSequence[] getTextArray(@ArrayRes int id) throws NotFoundException { 545 CharSequence[] res = mAssets.getResourceTextArray(id); 546 if (res != null) { 547 return res; 548 } 549 throw new NotFoundException("Text array resource ID #0x" 550 + Integer.toHexString(id)); 551 } 552 553 /** 554 * Return the string array associated with a particular resource ID. 555 * 556 * @param id The desired resource identifier, as generated by the aapt 557 * tool. This integer encodes the package, type, and resource 558 * entry. The value 0 is an invalid identifier. 559 * 560 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 561 * 562 * @return The string array associated with the resource. 563 */ 564 public String[] getStringArray(@ArrayRes int id) 565 throws NotFoundException { 566 String[] res = mAssets.getResourceStringArray(id); 567 if (res != null) { 568 return res; 569 } 570 throw new NotFoundException("String array resource ID #0x" 571 + Integer.toHexString(id)); 572 } 573 574 /** 575 * Return the int array associated with a particular resource ID. 576 * 577 * @param id The desired resource identifier, as generated by the aapt 578 * tool. This integer encodes the package, type, and resource 579 * entry. The value 0 is an invalid identifier. 580 * 581 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 582 * 583 * @return The int array associated with the resource. 584 */ 585 public int[] getIntArray(@ArrayRes int id) throws NotFoundException { 586 int[] res = mAssets.getArrayIntResource(id); 587 if (res != null) { 588 return res; 589 } 590 throw new NotFoundException("Int array resource ID #0x" 591 + Integer.toHexString(id)); 592 } 593 594 /** 595 * Return an array of heterogeneous values. 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 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 602 * 603 * @return Returns a TypedArray holding an array of the array values. 604 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 605 * when done with it. 606 */ 607 public TypedArray obtainTypedArray(@ArrayRes int id) 608 throws NotFoundException { 609 int len = mAssets.getArraySize(id); 610 if (len < 0) { 611 throw new NotFoundException("Array resource ID #0x" 612 + Integer.toHexString(id)); 613 } 614 615 TypedArray array = TypedArray.obtain(this, len); 616 array.mLength = mAssets.retrieveArray(id, array.mData); 617 array.mIndices[0] = 0; 618 619 return array; 620 } 621 622 /** 623 * Retrieve a dimensional for a particular resource ID. Unit 624 * conversions are based on the current {@link DisplayMetrics} associated 625 * with the resources. 626 * 627 * @param id The desired resource identifier, as generated by the aapt 628 * tool. This integer encodes the package, type, and resource 629 * entry. The value 0 is an invalid identifier. 630 * 631 * @return Resource dimension value multiplied by the appropriate 632 * metric. 633 * 634 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 635 * 636 * @see #getDimensionPixelOffset 637 * @see #getDimensionPixelSize 638 */ 639 public float getDimension(@DimenRes int id) throws NotFoundException { 640 final TypedValue value = obtainTempTypedValue(id); 641 try { 642 if (value.type == TypedValue.TYPE_DIMENSION) { 643 return TypedValue.complexToDimension(value.data, mMetrics); 644 } 645 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 646 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 647 } finally { 648 releaseTempTypedValue(value); 649 } 650 } 651 652 /** 653 * Retrieve a dimensional for a particular resource ID for use 654 * as an offset in raw pixels. This is the same as 655 * {@link #getDimension}, except the returned value is converted to 656 * integer pixels for you. An offset conversion involves simply 657 * truncating the base value to an integer. 658 * 659 * @param id The desired resource identifier, as generated by the aapt 660 * tool. This integer encodes the package, type, and resource 661 * entry. The value 0 is an invalid identifier. 662 * 663 * @return Resource dimension value multiplied by the appropriate 664 * metric and truncated to integer pixels. 665 * 666 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 667 * 668 * @see #getDimension 669 * @see #getDimensionPixelSize 670 */ 671 public int getDimensionPixelOffset(@DimenRes int id) throws NotFoundException { 672 final TypedValue value = obtainTempTypedValue(id); 673 try { 674 if (value.type == TypedValue.TYPE_DIMENSION) { 675 return TypedValue.complexToDimensionPixelOffset(value.data, mMetrics); 676 } 677 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 678 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 679 } finally { 680 releaseTempTypedValue(value); 681 } 682 } 683 684 /** 685 * Retrieve a dimensional for a particular resource ID for use 686 * as a size in raw pixels. This is the same as 687 * {@link #getDimension}, except the returned value is converted to 688 * integer pixels for use as a size. A size conversion involves 689 * rounding the base value, and ensuring that a non-zero base value 690 * is at least one pixel in size. 691 * 692 * @param id The desired resource identifier, as generated by the aapt 693 * tool. This integer encodes the package, type, and resource 694 * entry. The value 0 is an invalid identifier. 695 * 696 * @return Resource dimension value multiplied by the appropriate 697 * metric and truncated to integer pixels. 698 * 699 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 700 * 701 * @see #getDimension 702 * @see #getDimensionPixelOffset 703 */ 704 public int getDimensionPixelSize(@DimenRes int id) throws NotFoundException { 705 final TypedValue value = obtainTempTypedValue(id); 706 try { 707 if (value.type == TypedValue.TYPE_DIMENSION) { 708 return TypedValue.complexToDimensionPixelSize(value.data, mMetrics); 709 } 710 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 711 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 712 } finally { 713 releaseTempTypedValue(value); 714 } 715 } 716 717 /** 718 * Retrieve a fractional unit for a particular resource ID. 719 * 720 * @param id The desired resource identifier, as generated by the aapt 721 * tool. This integer encodes the package, type, and resource 722 * entry. The value 0 is an invalid identifier. 723 * @param base The base value of this fraction. In other words, a 724 * standard fraction is multiplied by this value. 725 * @param pbase The parent base value of this fraction. In other 726 * words, a parent fraction (nn%p) is multiplied by this 727 * value. 728 * 729 * @return Attribute fractional value multiplied by the appropriate 730 * base value. 731 * 732 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 733 */ 734 public float getFraction(@FractionRes int id, int base, int pbase) { 735 final TypedValue value = obtainTempTypedValue(id); 736 try { 737 if (value.type == TypedValue.TYPE_FRACTION) { 738 return TypedValue.complexToFraction(value.data, base, pbase); 739 } 740 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 741 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 742 } finally { 743 releaseTempTypedValue(value); 744 } 745 } 746 747 /** 748 * Return a drawable object associated with a particular resource ID. 749 * Various types of objects will be returned depending on the underlying 750 * resource -- for example, a solid color, PNG image, scalable image, etc. 751 * The Drawable API hides these implementation details. 752 * 753 * <p class="note"><strong>Note:</strong> Prior to 754 * {@link android.os.Build.VERSION_CODES#JELLY_BEAN}, this function 755 * would not correctly retrieve the final configuration density when 756 * the resource ID passed here is an alias to another Drawable resource. 757 * This means that if the density configuration of the alias resource 758 * is different than the actual resource, the density of the returned 759 * Drawable would be incorrect, resulting in bad scaling. To work 760 * around this, you can instead retrieve the Drawable through 761 * {@link TypedArray#getDrawable TypedArray.getDrawable}. Use 762 * {@link android.content.Context#obtainStyledAttributes(int[]) 763 * Context.obtainStyledAttributes} with 764 * an array containing the resource ID of interest to create the TypedArray.</p> 765 * 766 * <p class="note"><strong>Note:</strong> To obtain a themed drawable, use 767 * {@link android.content.Context#getDrawable(int) Context.getDrawable(int)} 768 * or {@link #getDrawable(int, Theme)} passing the desired theme.</p> 769 * 770 * @param id The desired resource identifier, as generated by the aapt 771 * tool. This integer encodes the package, type, and resource 772 * entry. The value 0 is an invalid identifier. 773 * @return Drawable An object that can be used to draw this resource. 774 * @throws NotFoundException Throws NotFoundException if the given ID does 775 * not exist. 776 * @see #getDrawable(int, Theme) 777 * @deprecated Use {@link #getDrawable(int, Theme)} instead. 778 */ 779 @Deprecated 780 @Nullable 781 public Drawable getDrawable(@DrawableRes int id) throws NotFoundException { 782 final Drawable d = getDrawable(id, null); 783 if (d != null && d.canApplyTheme()) { 784 Log.w(TAG, "Drawable " + getResourceName(id) + " has unresolved theme " 785 + "attributes! Consider using Resources.getDrawable(int, Theme) or " 786 + "Context.getDrawable(int).", new RuntimeException()); 787 } 788 return d; 789 } 790 791 /** 792 * Return a drawable object associated with a particular resource ID and 793 * styled for the specified theme. Various types of objects will be 794 * returned depending on the underlying resource -- for example, a solid 795 * color, PNG image, scalable image, etc. 796 * 797 * @param id The desired resource identifier, as generated by the aapt 798 * tool. This integer encodes the package, type, and resource 799 * entry. The value 0 is an invalid identifier. 800 * @param theme The theme used to style the drawable attributes, may be {@code null}. 801 * @return Drawable An object that can be used to draw this resource. 802 * @throws NotFoundException Throws NotFoundException if the given ID does 803 * not exist. 804 */ 805 @Nullable 806 public Drawable getDrawable(@DrawableRes int id, @Nullable Theme theme) 807 throws NotFoundException { 808 final TypedValue value = obtainTempTypedValue(id); 809 try { 810 return loadDrawable(value, id, theme); 811 } finally { 812 releaseTempTypedValue(value); 813 } 814 } 815 816 /** 817 * Return a drawable object associated with a particular resource ID for the 818 * given screen density in DPI. This will set the drawable's density to be 819 * the device's density multiplied by the ratio of actual drawable density 820 * to requested density. This allows the drawable to be scaled up to the 821 * correct size if needed. Various types of objects will be returned 822 * depending on the underlying resource -- for example, a solid color, PNG 823 * image, scalable image, etc. The Drawable API hides these implementation 824 * details. 825 * 826 * <p class="note"><strong>Note:</strong> To obtain a themed drawable, use 827 * {@link android.content.Context#getDrawable(int) Context.getDrawable(int)} 828 * or {@link #getDrawableForDensity(int, int, Theme)} passing the desired 829 * theme.</p> 830 * 831 * @param id The desired resource identifier, as generated by the aapt tool. 832 * This integer encodes the package, type, and resource entry. 833 * The value 0 is an invalid identifier. 834 * @param density the desired screen density indicated by the resource as 835 * found in {@link DisplayMetrics}. 836 * @return Drawable An object that can be used to draw this resource. 837 * @throws NotFoundException Throws NotFoundException if the given ID does 838 * not exist. 839 * @see #getDrawableForDensity(int, int, Theme) 840 * @deprecated Use {@link #getDrawableForDensity(int, int, Theme)} instead. 841 */ 842 @Deprecated 843 @Nullable 844 public Drawable getDrawableForDensity(@DrawableRes int id, int density) 845 throws NotFoundException { 846 return getDrawableForDensity(id, density, null); 847 } 848 849 /** 850 * Return a drawable object associated with a particular resource ID for the 851 * given screen density in DPI and styled for the specified theme. 852 * 853 * @param id The desired resource identifier, as generated by the aapt tool. 854 * This integer encodes the package, type, and resource entry. 855 * The value 0 is an invalid identifier. 856 * @param density The desired screen density indicated by the resource as 857 * found in {@link DisplayMetrics}. 858 * @param theme The theme used to style the drawable attributes, may be {@code null}. 859 * @return Drawable An object that can be used to draw this resource. 860 * @throws NotFoundException Throws NotFoundException if the given ID does 861 * not exist. 862 */ 863 @Nullable 864 public Drawable getDrawableForDensity(@DrawableRes int id, int density, @Nullable Theme theme) { 865 final TypedValue value = obtainTempTypedValue(id); 866 try { 867 getValueForDensity(id, density, value, true); 868 869 /* 870 * Pretend the requested density is actually the display density. If 871 * the drawable returned is not the requested density, then force it 872 * to be scaled later by dividing its density by the ratio of 873 * requested density to actual device density. Drawables that have 874 * undefined density or no density don't need to be handled here. 875 */ 876 if (value.density > 0 && value.density != TypedValue.DENSITY_NONE) { 877 if (value.density == density) { 878 value.density = mMetrics.densityDpi; 879 } else { 880 value.density = (value.density * mMetrics.densityDpi) / density; 881 } 882 } 883 884 return loadDrawable(value, id, theme); 885 } finally { 886 releaseTempTypedValue(value); 887 } 888 } 889 890 /** 891 * Return a movie object associated with the particular resource ID. 892 * @param id The desired resource identifier, as generated by the aapt 893 * tool. This integer encodes the package, type, and resource 894 * entry. The value 0 is an invalid identifier. 895 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 896 * 897 */ 898 public Movie getMovie(@RawRes int id) throws NotFoundException { 899 InputStream is = openRawResource(id); 900 Movie movie = Movie.decodeStream(is); 901 try { 902 is.close(); 903 } 904 catch (java.io.IOException e) { 905 // don't care, since the return value is valid 906 } 907 return movie; 908 } 909 910 /** 911 * Returns a color integer associated with a particular resource ID. If the 912 * resource holds a complex {@link ColorStateList}, then the default color 913 * from the set is returned. 914 * 915 * @param id The desired resource identifier, as generated by the aapt 916 * tool. This integer encodes the package, type, and resource 917 * entry. The value 0 is an invalid identifier. 918 * 919 * @throws NotFoundException Throws NotFoundException if the given ID does 920 * not exist. 921 * 922 * @return A single color value in the form 0xAARRGGBB. 923 * @deprecated Use {@link #getColor(int, Theme)} instead. 924 */ 925 @ColorInt 926 @Deprecated 927 public int getColor(@ColorRes int id) throws NotFoundException { 928 return getColor(id, null); 929 } 930 931 /** 932 * Returns a themed color integer associated with a particular resource ID. 933 * If the resource holds a complex {@link ColorStateList}, then the default 934 * color from the set is returned. 935 * 936 * @param id The desired resource identifier, as generated by the aapt 937 * tool. This integer encodes the package, type, and resource 938 * entry. The value 0 is an invalid identifier. 939 * @param theme The theme used to style the color attributes, may be 940 * {@code null}. 941 * 942 * @throws NotFoundException Throws NotFoundException if the given ID does 943 * not exist. 944 * 945 * @return A single color value in the form 0xAARRGGBB. 946 */ 947 @ColorInt 948 public int getColor(@ColorRes int id, @Nullable Theme theme) throws NotFoundException { 949 final TypedValue value = obtainTempTypedValue(id); 950 try { 951 if (value.type >= TypedValue.TYPE_FIRST_INT 952 && value.type <= TypedValue.TYPE_LAST_INT) { 953 return value.data; 954 } else if (value.type != TypedValue.TYPE_STRING) { 955 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 956 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 957 } 958 959 final ColorStateList csl = loadColorStateList(value, id, theme); 960 return csl.getDefaultColor(); 961 } finally { 962 releaseTempTypedValue(value); 963 } 964 } 965 966 /** 967 * Returns a color state list associated with a particular resource ID. The 968 * resource may contain either a single raw color value or a complex 969 * {@link ColorStateList} holding multiple possible colors. 970 * 971 * @param id The desired resource identifier of a {@link ColorStateList}, 972 * as generated by the aapt tool. This integer encodes the 973 * package, type, and resource entry. The value 0 is an invalid 974 * identifier. 975 * 976 * @throws NotFoundException Throws NotFoundException if the given ID does 977 * not exist. 978 * 979 * @return A ColorStateList object containing either a single solid color 980 * or multiple colors that can be selected based on a state. 981 * @deprecated Use {@link #getColorStateList(int, Theme)} instead. 982 */ 983 @Nullable 984 @Deprecated 985 public ColorStateList getColorStateList(@ColorRes int id) throws NotFoundException { 986 final ColorStateList csl = getColorStateList(id, null); 987 if (csl != null && csl.canApplyTheme()) { 988 Log.w(TAG, "ColorStateList " + getResourceName(id) + " has " 989 + "unresolved theme attributes! Consider using " 990 + "Resources.getColorStateList(int, Theme) or " 991 + "Context.getColorStateList(int).", new RuntimeException()); 992 } 993 return csl; 994 } 995 996 /** 997 * Returns a themed color state list associated with a particular resource 998 * ID. The resource may contain either a single raw color value or a 999 * complex {@link ColorStateList} holding multiple possible colors. 1000 * 1001 * @param id The desired resource identifier of a {@link ColorStateList}, 1002 * as generated by the aapt tool. This integer encodes the 1003 * package, type, and resource entry. The value 0 is an invalid 1004 * identifier. 1005 * @param theme The theme used to style the color attributes, may be 1006 * {@code null}. 1007 * 1008 * @throws NotFoundException Throws NotFoundException if the given ID does 1009 * not exist. 1010 * 1011 * @return A themed ColorStateList object containing either a single solid 1012 * color or multiple colors that can be selected based on a state. 1013 */ 1014 @Nullable 1015 public ColorStateList getColorStateList(@ColorRes int id, @Nullable Theme theme) 1016 throws NotFoundException { 1017 final TypedValue value = obtainTempTypedValue(id); 1018 try { 1019 return loadColorStateList(value, id, theme); 1020 } finally { 1021 releaseTempTypedValue(value); 1022 } 1023 } 1024 1025 /** 1026 * Return a boolean associated with a particular resource ID. This can be 1027 * used with any integral resource value, and will return true if it is 1028 * non-zero. 1029 * 1030 * @param id The desired resource identifier, as generated by the aapt 1031 * tool. This integer encodes the package, type, and resource 1032 * entry. The value 0 is an invalid identifier. 1033 * 1034 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1035 * 1036 * @return Returns the boolean value contained in the resource. 1037 */ 1038 public boolean getBoolean(@BoolRes int id) throws NotFoundException { 1039 final TypedValue value = obtainTempTypedValue(id); 1040 try { 1041 if (value.type >= TypedValue.TYPE_FIRST_INT 1042 && value.type <= TypedValue.TYPE_LAST_INT) { 1043 return value.data != 0; 1044 } 1045 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 1046 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 1047 } finally { 1048 releaseTempTypedValue(value); 1049 } 1050 } 1051 1052 /** 1053 * Return an integer associated with a particular resource ID. 1054 * 1055 * @param id The desired resource identifier, as generated by the aapt 1056 * tool. This integer encodes the package, type, and resource 1057 * entry. The value 0 is an invalid identifier. 1058 * 1059 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1060 * 1061 * @return Returns the integer value contained in the resource. 1062 */ 1063 public int getInteger(@IntegerRes int id) throws NotFoundException { 1064 final TypedValue value = obtainTempTypedValue(id); 1065 try { 1066 if (value.type >= TypedValue.TYPE_FIRST_INT 1067 && value.type <= TypedValue.TYPE_LAST_INT) { 1068 return value.data; 1069 } 1070 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 1071 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 1072 } finally { 1073 releaseTempTypedValue(value); 1074 } 1075 } 1076 1077 /** 1078 * Retrieve a floating-point value for a particular resource ID. 1079 * 1080 * @param id The desired resource identifier, as generated by the aapt 1081 * tool. This integer encodes the package, type, and resource 1082 * entry. The value 0 is an invalid identifier. 1083 * 1084 * @return Returns the floating-point value contained in the resource. 1085 * 1086 * @throws NotFoundException Throws NotFoundException if the given ID does 1087 * not exist or is not a floating-point value. 1088 * @hide Pending API council approval. 1089 */ 1090 public float getFloat(int id) { 1091 final TypedValue value = obtainTempTypedValue(id); 1092 try { 1093 if (value.type == TypedValue.TYPE_FLOAT) { 1094 return value.getFloat(); 1095 } 1096 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 1097 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 1098 } finally { 1099 releaseTempTypedValue(value); 1100 } 1101 } 1102 1103 /** 1104 * Return an XmlResourceParser through which you can read a view layout 1105 * description for the given resource ID. This parser has limited 1106 * functionality -- in particular, you can't change its input, and only 1107 * the high-level events are available. 1108 * 1109 * <p>This function is really a simple wrapper for calling 1110 * {@link #getXml} with a layout resource. 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 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1117 * 1118 * @return A new parser object through which you can read 1119 * the XML data. 1120 * 1121 * @see #getXml 1122 */ 1123 public XmlResourceParser getLayout(@LayoutRes int id) throws NotFoundException { 1124 return loadXmlResourceParser(id, "layout"); 1125 } 1126 1127 /** 1128 * Return an XmlResourceParser through which you can read an animation 1129 * description for the given resource ID. This parser has limited 1130 * functionality -- in particular, you can't change its input, and only 1131 * the high-level events are available. 1132 * 1133 * <p>This function is really a simple wrapper for calling 1134 * {@link #getXml} with an animation resource. 1135 * 1136 * @param id The desired resource identifier, as generated by the aapt 1137 * tool. This integer encodes the package, type, and resource 1138 * entry. The value 0 is an invalid identifier. 1139 * 1140 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1141 * 1142 * @return A new parser object through which you can read 1143 * the XML data. 1144 * 1145 * @see #getXml 1146 */ 1147 public XmlResourceParser getAnimation(@AnimRes int id) throws NotFoundException { 1148 return loadXmlResourceParser(id, "anim"); 1149 } 1150 1151 /** 1152 * Return an XmlResourceParser through which you can read a generic XML 1153 * resource for the given resource ID. 1154 * 1155 * <p>The XmlPullParser implementation returned here has some limited 1156 * functionality. In particular, you can't change its input, and only 1157 * high-level parsing events are available (since the document was 1158 * pre-parsed for you at build time, which involved merging text and 1159 * stripping comments). 1160 * 1161 * @param id The desired resource identifier, as generated by the aapt 1162 * tool. This integer encodes the package, type, and resource 1163 * entry. The value 0 is an invalid identifier. 1164 * 1165 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1166 * 1167 * @return A new parser object through which you can read 1168 * the XML data. 1169 * 1170 * @see android.util.AttributeSet 1171 */ 1172 public XmlResourceParser getXml(@XmlRes int id) throws NotFoundException { 1173 return loadXmlResourceParser(id, "xml"); 1174 } 1175 1176 /** 1177 * Open a data stream for reading a raw resource. This can only be used 1178 * with resources whose value is the name of an asset files -- that is, it can be 1179 * used to open drawable, sound, and raw resources; it will fail on string 1180 * and color resources. 1181 * 1182 * @param id The resource identifier to open, as generated by the appt 1183 * tool. 1184 * 1185 * @return InputStream Access to the resource data. 1186 * 1187 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1188 * 1189 */ 1190 public InputStream openRawResource(@RawRes int id) throws NotFoundException { 1191 final TypedValue value = obtainTempTypedValue(); 1192 try { 1193 return openRawResource(id, value); 1194 } finally { 1195 releaseTempTypedValue(value); 1196 } 1197 } 1198 1199 /** 1200 * Returns a TypedValue populated with data for the specified resource ID 1201 * that's suitable for temporary use. The obtained TypedValue should be 1202 * released using {@link #releaseTempTypedValue(TypedValue)}. 1203 * 1204 * @param id the resource ID for which data should be obtained 1205 * @return a populated typed value suitable for temporary use 1206 */ 1207 private TypedValue obtainTempTypedValue(@AnyRes int id) { 1208 final TypedValue value = obtainTempTypedValue(); 1209 getValue(id, value, true); 1210 return value; 1211 } 1212 1213 /** 1214 * Returns a TypedValue suitable for temporary use. The obtained TypedValue 1215 * should be released using {@link #releaseTempTypedValue(TypedValue)}. 1216 * 1217 * @return a typed value suitable for temporary use 1218 */ 1219 private TypedValue obtainTempTypedValue() { 1220 TypedValue tmpValue = null; 1221 synchronized (mTmpValueLock) { 1222 if (mTmpValue != null) { 1223 tmpValue = mTmpValue; 1224 mTmpValue = null; 1225 } 1226 } 1227 if (tmpValue == null) { 1228 return new TypedValue(); 1229 } 1230 return tmpValue; 1231 } 1232 1233 /** 1234 * Returns a TypedValue to the pool. After calling this method, the 1235 * specified TypedValue should no longer be accessed. 1236 * 1237 * @param value the typed value to return to the pool 1238 */ 1239 private void releaseTempTypedValue(TypedValue value) { 1240 synchronized (mTmpValueLock) { 1241 if (mTmpValue == null) { 1242 mTmpValue = value; 1243 } 1244 } 1245 } 1246 1247 /** 1248 * Open a data stream for reading a raw resource. This can only be used 1249 * with resources whose value is the name of an asset file -- that is, it can be 1250 * used to open drawable, sound, and raw resources; it will fail on string 1251 * and color resources. 1252 * 1253 * @param id The resource identifier to open, as generated by the appt tool. 1254 * @param value The TypedValue object to hold the resource information. 1255 * 1256 * @return InputStream Access to the resource data. 1257 * 1258 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1259 */ 1260 public InputStream openRawResource(@RawRes int id, TypedValue value) 1261 throws NotFoundException { 1262 getValue(id, value, true); 1263 1264 try { 1265 return mAssets.openNonAsset(value.assetCookie, value.string.toString(), 1266 AssetManager.ACCESS_STREAMING); 1267 } catch (Exception e) { 1268 NotFoundException rnf = new NotFoundException("File " + value.string.toString() + 1269 " from drawable resource ID #0x" + Integer.toHexString(id)); 1270 rnf.initCause(e); 1271 throw rnf; 1272 } 1273 } 1274 1275 /** 1276 * Open a file descriptor for reading a raw resource. This can only be used 1277 * with resources whose value is the name of an asset files -- that is, it can be 1278 * used to open drawable, sound, and raw resources; it will fail on string 1279 * and color resources. 1280 * 1281 * <p>This function only works for resources that are stored in the package 1282 * as uncompressed data, which typically includes things like mp3 files 1283 * and png images. 1284 * 1285 * @param id The resource identifier to open, as generated by the appt 1286 * tool. 1287 * 1288 * @return AssetFileDescriptor A new file descriptor you can use to read 1289 * the resource. This includes the file descriptor itself, as well as the 1290 * offset and length of data where the resource appears in the file. A 1291 * null is returned if the file exists but is compressed. 1292 * 1293 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1294 * 1295 */ 1296 public AssetFileDescriptor openRawResourceFd(@RawRes int id) 1297 throws NotFoundException { 1298 final TypedValue value = obtainTempTypedValue(id); 1299 try { 1300 return mAssets.openNonAssetFd(value.assetCookie, value.string.toString()); 1301 } catch (Exception e) { 1302 throw new NotFoundException("File " + value.string.toString() + " from drawable " 1303 + "resource ID #0x" + Integer.toHexString(id), e); 1304 } finally { 1305 releaseTempTypedValue(value); 1306 } 1307 } 1308 1309 /** 1310 * Return the raw data associated with a particular resource ID. 1311 * 1312 * @param id The desired resource identifier, as generated by the aapt 1313 * tool. This integer encodes the package, type, and resource 1314 * entry. The value 0 is an invalid identifier. 1315 * @param outValue Object in which to place the resource data. 1316 * @param resolveRefs If true, a resource that is a reference to another 1317 * resource will be followed so that you receive the 1318 * actual final resource data. If false, the TypedValue 1319 * will be filled in with the reference itself. 1320 * 1321 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1322 * 1323 */ 1324 public void getValue(@AnyRes int id, TypedValue outValue, boolean resolveRefs) 1325 throws NotFoundException { 1326 boolean found = mAssets.getResourceValue(id, 0, outValue, resolveRefs); 1327 if (found) { 1328 return; 1329 } 1330 throw new NotFoundException("Resource ID #0x" 1331 + Integer.toHexString(id)); 1332 } 1333 1334 /** 1335 * Get the raw value associated with a resource with associated density. 1336 * 1337 * @param id resource identifier 1338 * @param density density in DPI 1339 * @param resolveRefs If true, a resource that is a reference to another 1340 * resource will be followed so that you receive the actual final 1341 * resource data. If false, the TypedValue will be filled in with 1342 * the reference itself. 1343 * @throws NotFoundException Throws NotFoundException if the given ID does 1344 * not exist. 1345 * @see #getValue(String, TypedValue, boolean) 1346 */ 1347 public void getValueForDensity(@AnyRes int id, int density, TypedValue outValue, 1348 boolean resolveRefs) throws NotFoundException { 1349 boolean found = mAssets.getResourceValue(id, density, outValue, resolveRefs); 1350 if (found) { 1351 return; 1352 } 1353 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id)); 1354 } 1355 1356 /** 1357 * Return the raw data associated with a particular resource ID. 1358 * See getIdentifier() for information on how names are mapped to resource 1359 * IDs, and getString(int) for information on how string resources are 1360 * retrieved. 1361 * 1362 * <p>Note: use of this function is discouraged. It is much more 1363 * efficient to retrieve resources by identifier than by name. 1364 * 1365 * @param name The name of the desired resource. This is passed to 1366 * getIdentifier() with a default type of "string". 1367 * @param outValue Object in which to place the resource data. 1368 * @param resolveRefs If true, a resource that is a reference to another 1369 * resource will be followed so that you receive the 1370 * actual final resource data. If false, the TypedValue 1371 * will be filled in with the reference itself. 1372 * 1373 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1374 * 1375 */ 1376 public void getValue(String name, TypedValue outValue, boolean resolveRefs) 1377 throws NotFoundException { 1378 int id = getIdentifier(name, "string", null); 1379 if (id != 0) { 1380 getValue(id, outValue, resolveRefs); 1381 return; 1382 } 1383 throw new NotFoundException("String resource name " + name); 1384 } 1385 1386 /** 1387 * This class holds the current attribute values for a particular theme. 1388 * In other words, a Theme is a set of values for resource attributes; 1389 * these are used in conjunction with {@link TypedArray} 1390 * to resolve the final value for an attribute. 1391 * 1392 * <p>The Theme's attributes come into play in two ways: (1) a styled 1393 * attribute can explicit reference a value in the theme through the 1394 * "?themeAttribute" syntax; (2) if no value has been defined for a 1395 * particular styled attribute, as a last resort we will try to find that 1396 * attribute's value in the Theme. 1397 * 1398 * <p>You will normally use the {@link #obtainStyledAttributes} APIs to 1399 * retrieve XML attributes with style and theme information applied. 1400 */ 1401 public final class Theme { 1402 /** 1403 * Place new attribute values into the theme. The style resource 1404 * specified by <var>resid</var> will be retrieved from this Theme's 1405 * resources, its values placed into the Theme object. 1406 * 1407 * <p>The semantics of this function depends on the <var>force</var> 1408 * argument: If false, only values that are not already defined in 1409 * the theme will be copied from the system resource; otherwise, if 1410 * any of the style's attributes are already defined in the theme, the 1411 * current values in the theme will be overwritten. 1412 * 1413 * @param resId The resource ID of a style resource from which to 1414 * obtain attribute values. 1415 * @param force If true, values in the style resource will always be 1416 * used in the theme; otherwise, they will only be used 1417 * if not already defined in the theme. 1418 */ 1419 public void applyStyle(int resId, boolean force) { 1420 synchronized (mKey) { 1421 AssetManager.applyThemeStyle(mTheme, resId, force); 1422 1423 mThemeResId = resId; 1424 mKey.append(resId, force); 1425 } 1426 } 1427 1428 /** 1429 * Set this theme to hold the same contents as the theme 1430 * <var>other</var>. If both of these themes are from the same 1431 * Resources object, they will be identical after this function 1432 * returns. If they are from different Resources, only the resources 1433 * they have in common will be set in this theme. 1434 * 1435 * @param other The existing Theme to copy from. 1436 */ 1437 public void setTo(Theme other) { 1438 synchronized (mKey) { 1439 synchronized (other.mKey) { 1440 AssetManager.copyTheme(mTheme, other.mTheme); 1441 1442 mThemeResId = other.mThemeResId; 1443 mKey.setTo(other.getKey()); 1444 } 1445 } 1446 } 1447 1448 /** 1449 * Return a TypedArray holding the values defined by 1450 * <var>Theme</var> which are listed in <var>attrs</var>. 1451 * 1452 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1453 * with the array. 1454 * 1455 * @param attrs The desired attributes. 1456 * 1457 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1458 * 1459 * @return Returns a TypedArray holding an array of the attribute values. 1460 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1461 * when done with it. 1462 * 1463 * @see Resources#obtainAttributes 1464 * @see #obtainStyledAttributes(int, int[]) 1465 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1466 */ 1467 public TypedArray obtainStyledAttributes(@StyleableRes int[] attrs) { 1468 synchronized (mKey) { 1469 final int len = attrs.length; 1470 final TypedArray array = TypedArray.obtain(Resources.this, len); 1471 array.mTheme = this; 1472 AssetManager.applyStyle(mTheme, 0, 0, 0, attrs, array.mData, array.mIndices); 1473 return array; 1474 } 1475 } 1476 1477 /** 1478 * Return a TypedArray holding the values defined by the style 1479 * resource <var>resid</var> which are listed in <var>attrs</var>. 1480 * 1481 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1482 * with the array. 1483 * 1484 * @param resId The desired style resource. 1485 * @param attrs The desired attributes in the style. 1486 * 1487 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1488 * 1489 * @return Returns a TypedArray holding an array of the attribute values. 1490 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1491 * when done with it. 1492 * 1493 * @see Resources#obtainAttributes 1494 * @see #obtainStyledAttributes(int[]) 1495 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1496 */ 1497 public TypedArray obtainStyledAttributes(@StyleRes int resId, @StyleableRes int[] attrs) 1498 throws NotFoundException { 1499 synchronized (mKey) { 1500 final int len = attrs.length; 1501 final TypedArray array = TypedArray.obtain(Resources.this, len); 1502 array.mTheme = this; 1503 AssetManager.applyStyle(mTheme, 0, resId, 0, attrs, array.mData, array.mIndices); 1504 return array; 1505 } 1506 } 1507 1508 /** 1509 * Return a TypedArray holding the attribute values in 1510 * <var>set</var> 1511 * that are listed in <var>attrs</var>. In addition, if the given 1512 * AttributeSet specifies a style class (through the "style" attribute), 1513 * that style will be applied on top of the base attributes it defines. 1514 * 1515 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1516 * with the array. 1517 * 1518 * <p>When determining the final value of a particular attribute, there 1519 * are four inputs that come into play:</p> 1520 * 1521 * <ol> 1522 * <li> Any attribute values in the given AttributeSet. 1523 * <li> The style resource specified in the AttributeSet (named 1524 * "style"). 1525 * <li> The default style specified by <var>defStyleAttr</var> and 1526 * <var>defStyleRes</var> 1527 * <li> The base values in this theme. 1528 * </ol> 1529 * 1530 * <p>Each of these inputs is considered in-order, with the first listed 1531 * taking precedence over the following ones. In other words, if in the 1532 * AttributeSet you have supplied <code><Button 1533 * textColor="#ff000000"></code>, then the button's text will 1534 * <em>always</em> be black, regardless of what is specified in any of 1535 * the styles. 1536 * 1537 * @param set The base set of attribute values. May be null. 1538 * @param attrs The desired attributes to be retrieved. 1539 * @param defStyleAttr An attribute in the current theme that contains a 1540 * reference to a style resource that supplies 1541 * defaults values for the TypedArray. Can be 1542 * 0 to not look for defaults. 1543 * @param defStyleRes A resource identifier of a style resource that 1544 * supplies default values for the TypedArray, 1545 * used only if defStyleAttr is 0 or can not be found 1546 * in the theme. Can be 0 to not look for defaults. 1547 * 1548 * @return Returns a TypedArray holding an array of the attribute values. 1549 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1550 * when done with it. 1551 * 1552 * @see Resources#obtainAttributes 1553 * @see #obtainStyledAttributes(int[]) 1554 * @see #obtainStyledAttributes(int, int[]) 1555 */ 1556 public TypedArray obtainStyledAttributes(AttributeSet set, 1557 @StyleableRes int[] attrs, @AttrRes int defStyleAttr, @StyleRes int defStyleRes) { 1558 synchronized (mKey) { 1559 final int len = attrs.length; 1560 final TypedArray array = TypedArray.obtain(Resources.this, len); 1561 1562 // XXX note that for now we only work with compiled XML files. 1563 // To support generic XML files we will need to manually parse 1564 // out the attributes from the XML file (applying type information 1565 // contained in the resources and such). 1566 final XmlBlock.Parser parser = (XmlBlock.Parser) set; 1567 AssetManager.applyStyle(mTheme, defStyleAttr, defStyleRes, 1568 parser != null ? parser.mParseState : 0, 1569 attrs, array.mData, array.mIndices); 1570 array.mTheme = this; 1571 array.mXml = parser; 1572 1573 return array; 1574 } 1575 } 1576 1577 /** 1578 * Retrieve the values for a set of attributes in the Theme. The 1579 * contents of the typed array are ultimately filled in by 1580 * {@link Resources#getValue}. 1581 * 1582 * @param values The base set of attribute values, must be equal in 1583 * length to {@code attrs}. All values must be of type 1584 * {@link TypedValue#TYPE_ATTRIBUTE}. 1585 * @param attrs The desired attributes to be retrieved. 1586 * @return Returns a TypedArray holding an array of the attribute 1587 * values. Be sure to call {@link TypedArray#recycle()} 1588 * when done with it. 1589 * @hide 1590 */ 1591 @NonNull 1592 public TypedArray resolveAttributes(@NonNull int[] values, @NonNull int[] attrs) { 1593 synchronized (mKey) { 1594 final int len = attrs.length; 1595 if (values == null || len != values.length) { 1596 throw new IllegalArgumentException( 1597 "Base attribute values must the same length as attrs"); 1598 } 1599 1600 final TypedArray array = TypedArray.obtain(Resources.this, len); 1601 AssetManager.resolveAttrs(mTheme, 0, 0, values, attrs, array.mData, array.mIndices); 1602 array.mTheme = this; 1603 array.mXml = null; 1604 1605 return array; 1606 } 1607 } 1608 1609 /** 1610 * Retrieve the value of an attribute in the Theme. The contents of 1611 * <var>outValue</var> are ultimately filled in by 1612 * {@link Resources#getValue}. 1613 * 1614 * @param resid The resource identifier of the desired theme 1615 * attribute. 1616 * @param outValue Filled in with the ultimate resource value supplied 1617 * by the attribute. 1618 * @param resolveRefs If true, resource references will be walked; if 1619 * false, <var>outValue</var> may be a 1620 * TYPE_REFERENCE. In either case, it will never 1621 * be a TYPE_ATTRIBUTE. 1622 * 1623 * @return boolean Returns true if the attribute was found and 1624 * <var>outValue</var> is valid, else false. 1625 */ 1626 public boolean resolveAttribute(int resid, TypedValue outValue, boolean resolveRefs) { 1627 synchronized (mKey) { 1628 return mAssets.getThemeValue(mTheme, resid, outValue, resolveRefs); 1629 } 1630 } 1631 1632 /** 1633 * Gets all of the attribute ids associated with this {@link Theme}. For debugging only. 1634 * 1635 * @return The int array containing attribute ids associated with this {@link Theme}. 1636 * @hide 1637 */ 1638 public int[] getAllAttributes() { 1639 return mAssets.getStyleAttributes(getAppliedStyleResId()); 1640 } 1641 1642 /** 1643 * Returns the resources to which this theme belongs. 1644 * 1645 * @return Resources to which this theme belongs. 1646 */ 1647 public Resources getResources() { 1648 return Resources.this; 1649 } 1650 1651 /** 1652 * Return a drawable object associated with a particular resource ID 1653 * and styled for the Theme. 1654 * 1655 * @param id The desired resource identifier, as generated by the aapt 1656 * tool. This integer encodes the package, type, and resource 1657 * entry. The value 0 is an invalid identifier. 1658 * @return Drawable An object that can be used to draw this resource. 1659 * @throws NotFoundException Throws NotFoundException if the given ID 1660 * does not exist. 1661 */ 1662 public Drawable getDrawable(@DrawableRes int id) throws NotFoundException { 1663 return Resources.this.getDrawable(id, this); 1664 } 1665 1666 /** 1667 * Returns a bit mask of configuration changes that will impact this 1668 * theme (and thus require completely reloading it). 1669 * 1670 * @return a bit mask of configuration changes, as defined by 1671 * {@link ActivityInfo} 1672 * @see ActivityInfo 1673 */ 1674 public int getChangingConfigurations() { 1675 synchronized (mKey) { 1676 final int nativeChangingConfig = 1677 AssetManager.getThemeChangingConfigurations(mTheme); 1678 return ActivityInfo.activityInfoConfigNativeToJava(nativeChangingConfig); 1679 } 1680 } 1681 1682 /** 1683 * Print contents of this theme out to the log. For debugging only. 1684 * 1685 * @param priority The log priority to use. 1686 * @param tag The log tag to use. 1687 * @param prefix Text to prefix each line printed. 1688 */ 1689 public void dump(int priority, String tag, String prefix) { 1690 synchronized (mKey) { 1691 AssetManager.dumpTheme(mTheme, priority, tag, prefix); 1692 } 1693 } 1694 1695 @Override 1696 protected void finalize() throws Throwable { 1697 super.finalize(); 1698 mAssets.releaseTheme(mTheme); 1699 } 1700 1701 /*package*/ Theme() { 1702 mAssets = Resources.this.mAssets; 1703 mTheme = mAssets.createTheme(); 1704 } 1705 1706 /** Unique key for the series of styles applied to this theme. */ 1707 private final ThemeKey mKey = new ThemeKey(); 1708 1709 @SuppressWarnings("hiding") 1710 private final AssetManager mAssets; 1711 private final long mTheme; 1712 1713 /** Resource identifier for the theme. */ 1714 private int mThemeResId = 0; 1715 1716 // Needed by layoutlib. 1717 /*package*/ long getNativeTheme() { 1718 return mTheme; 1719 } 1720 1721 /*package*/ int getAppliedStyleResId() { 1722 return mThemeResId; 1723 } 1724 1725 /*package*/ ThemeKey getKey() { 1726 return mKey; 1727 } 1728 1729 private String getResourceNameFromHexString(String hexString) { 1730 return getResourceName(Integer.parseInt(hexString, 16)); 1731 } 1732 1733 /** 1734 * Parses {@link #mKey} and returns a String array that holds pairs of 1735 * adjacent Theme data: resource name followed by whether or not it was 1736 * forced, as specified by {@link #applyStyle(int, boolean)}. 1737 * 1738 * @hide 1739 */ 1740 @ViewDebug.ExportedProperty(category = "theme", hasAdjacentMapping = true) 1741 public String[] getTheme() { 1742 synchronized (mKey) { 1743 final int N = mKey.mCount; 1744 final String[] themes = new String[N * 2]; 1745 for (int i = 0, j = N - 1; i < themes.length; i += 2, --j) { 1746 final int resId = mKey.mResId[j]; 1747 final boolean forced = mKey.mForce[j]; 1748 try { 1749 themes[i] = getResourceName(resId); 1750 } catch (NotFoundException e) { 1751 themes[i] = Integer.toHexString(i); 1752 } 1753 themes[i + 1] = forced ? "forced" : "not forced"; 1754 } 1755 return themes; 1756 } 1757 } 1758 1759 /** @hide */ 1760 public void encode(@NonNull ViewHierarchyEncoder encoder) { 1761 encoder.beginObject(this); 1762 final String[] properties = getTheme(); 1763 for (int i = 0; i < properties.length; i += 2) { 1764 encoder.addProperty(properties[i], properties[i+1]); 1765 } 1766 encoder.endObject(); 1767 } 1768 1769 /** 1770 * Rebases the theme against the parent Resource object's current 1771 * configuration by re-applying the styles passed to 1772 * {@link #applyStyle(int, boolean)}. 1773 * 1774 * @hide 1775 */ 1776 public void rebase() { 1777 synchronized (mKey) { 1778 AssetManager.clearTheme(mTheme); 1779 1780 // Reapply the same styles in the same order. 1781 for (int i = 0; i < mKey.mCount; i++) { 1782 final int resId = mKey.mResId[i]; 1783 final boolean force = mKey.mForce[i]; 1784 AssetManager.applyThemeStyle(mTheme, resId, force); 1785 } 1786 } 1787 } 1788 } 1789 1790 static class ThemeKey implements Cloneable { 1791 int[] mResId; 1792 boolean[] mForce; 1793 int mCount; 1794 1795 private int mHashCode = 0; 1796 1797 public void append(int resId, boolean force) { 1798 if (mResId == null) { 1799 mResId = new int[4]; 1800 } 1801 1802 if (mForce == null) { 1803 mForce = new boolean[4]; 1804 } 1805 1806 mResId = GrowingArrayUtils.append(mResId, mCount, resId); 1807 mForce = GrowingArrayUtils.append(mForce, mCount, force); 1808 mCount++; 1809 1810 mHashCode = 31 * (31 * mHashCode + resId) + (force ? 1 : 0); 1811 } 1812 1813 /** 1814 * Sets up this key as a deep copy of another key. 1815 * 1816 * @param other the key to deep copy into this key 1817 */ 1818 public void setTo(ThemeKey other) { 1819 mResId = other.mResId == null ? null : other.mResId.clone(); 1820 mForce = other.mForce == null ? null : other.mForce.clone(); 1821 mCount = other.mCount; 1822 } 1823 1824 @Override 1825 public int hashCode() { 1826 return mHashCode; 1827 } 1828 1829 @Override 1830 public boolean equals(Object o) { 1831 if (this == o) { 1832 return true; 1833 } 1834 1835 if (o == null || getClass() != o.getClass() || hashCode() != o.hashCode()) { 1836 return false; 1837 } 1838 1839 final ThemeKey t = (ThemeKey) o; 1840 if (mCount != t.mCount) { 1841 return false; 1842 } 1843 1844 final int N = mCount; 1845 for (int i = 0; i < N; i++) { 1846 if (mResId[i] != t.mResId[i] || mForce[i] != t.mForce[i]) { 1847 return false; 1848 } 1849 } 1850 1851 return true; 1852 } 1853 1854 /** 1855 * @return a shallow copy of this key 1856 */ 1857 @Override 1858 public ThemeKey clone() { 1859 final ThemeKey other = new ThemeKey(); 1860 other.mResId = mResId; 1861 other.mForce = mForce; 1862 other.mCount = mCount; 1863 other.mHashCode = mHashCode; 1864 return other; 1865 } 1866 } 1867 1868 /** 1869 * Generate a new Theme object for this set of Resources. It initially 1870 * starts out empty. 1871 * 1872 * @return Theme The newly created Theme container. 1873 */ 1874 public final Theme newTheme() { 1875 return new Theme(); 1876 } 1877 1878 /** 1879 * Retrieve a set of basic attribute values from an AttributeSet, not 1880 * performing styling of them using a theme and/or style resources. 1881 * 1882 * @param set The current attribute values to retrieve. 1883 * @param attrs The specific attributes to be retrieved. 1884 * @return Returns a TypedArray holding an array of the attribute values. 1885 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1886 * when done with it. 1887 * 1888 * @see Theme#obtainStyledAttributes(AttributeSet, int[], int, int) 1889 */ 1890 public TypedArray obtainAttributes(AttributeSet set, int[] attrs) { 1891 int len = attrs.length; 1892 TypedArray array = TypedArray.obtain(this, len); 1893 1894 // XXX note that for now we only work with compiled XML files. 1895 // To support generic XML files we will need to manually parse 1896 // out the attributes from the XML file (applying type information 1897 // contained in the resources and such). 1898 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1899 mAssets.retrieveAttributes(parser.mParseState, attrs, 1900 array.mData, array.mIndices); 1901 1902 array.mXml = parser; 1903 1904 return array; 1905 } 1906 1907 /** 1908 * Store the newly updated configuration. 1909 */ 1910 public void updateConfiguration(Configuration config, 1911 DisplayMetrics metrics) { 1912 updateConfiguration(config, metrics, null); 1913 } 1914 1915 /** 1916 * @hide 1917 */ 1918 public void updateConfiguration(Configuration config, 1919 DisplayMetrics metrics, CompatibilityInfo compat) { 1920 synchronized (mAccessLock) { 1921 if (false) { 1922 Slog.i(TAG, "**** Updating config of " + this + ": old config is " 1923 + mConfiguration + " old compat is " + mCompatibilityInfo); 1924 Slog.i(TAG, "**** Updating config of " + this + ": new config is " 1925 + config + " new compat is " + compat); 1926 } 1927 if (compat != null) { 1928 mCompatibilityInfo = compat; 1929 } 1930 if (metrics != null) { 1931 mMetrics.setTo(metrics); 1932 } 1933 // NOTE: We should re-arrange this code to create a Display 1934 // with the CompatibilityInfo that is used everywhere we deal 1935 // with the display in relation to this app, rather than 1936 // doing the conversion here. This impl should be okay because 1937 // we make sure to return a compatible display in the places 1938 // where there are public APIs to retrieve the display... but 1939 // it would be cleaner and more maintainble to just be 1940 // consistently dealing with a compatible display everywhere in 1941 // the framework. 1942 mCompatibilityInfo.applyToDisplayMetrics(mMetrics); 1943 1944 final int configChanges = calcConfigChanges(config); 1945 1946 LocaleList locales = mConfiguration.getLocales(); 1947 final boolean setLocalesToDefault = locales.isEmpty(); 1948 if (setLocalesToDefault) { 1949 locales = LocaleList.getDefault(); 1950 mConfiguration.setLocales(locales); 1951 } 1952 if (mConfiguration.densityDpi != Configuration.DENSITY_DPI_UNDEFINED) { 1953 mMetrics.densityDpi = mConfiguration.densityDpi; 1954 mMetrics.density = mConfiguration.densityDpi * DisplayMetrics.DENSITY_DEFAULT_SCALE; 1955 } 1956 mMetrics.scaledDensity = mMetrics.density * mConfiguration.fontScale; 1957 1958 final int width, height; 1959 if (mMetrics.widthPixels >= mMetrics.heightPixels) { 1960 width = mMetrics.widthPixels; 1961 height = mMetrics.heightPixels; 1962 } else { 1963 //noinspection SuspiciousNameCombination 1964 width = mMetrics.heightPixels; 1965 //noinspection SuspiciousNameCombination 1966 height = mMetrics.widthPixels; 1967 } 1968 1969 final int keyboardHidden; 1970 if (mConfiguration.keyboardHidden == Configuration.KEYBOARDHIDDEN_NO 1971 && mConfiguration.hardKeyboardHidden == Configuration.HARDKEYBOARDHIDDEN_YES) { 1972 keyboardHidden = Configuration.KEYBOARDHIDDEN_SOFT; 1973 } else { 1974 keyboardHidden = mConfiguration.keyboardHidden; 1975 } 1976 1977 if (setLocalesToDefault || mResolvedLocale == null 1978 || (configChanges & Configuration.NATIVE_CONFIG_LOCALE) != 0) { 1979 if (locales.size() == 1) { 1980 // This is an optimization to avoid the JNI call(s) when the result of 1981 // getFirstMatchWithEnglishSupported() does not depend on the supported locales. 1982 mResolvedLocale = locales.getPrimary(); 1983 } else { 1984 String[] supportedLocales = mAssets.getNonSystemLocales(); 1985 if (LocaleList.isPseudoLocalesOnly(supportedLocales)) { 1986 // We fallback to all locales (including system locales) if there was no 1987 // locale specifically supported by the assets. This is to properly support 1988 // apps that only rely on the shared system assets and don't need assets of 1989 // their own. 1990 supportedLocales = mAssets.getLocales(); 1991 } 1992 mResolvedLocale = locales.getFirstMatchWithEnglishSupported(supportedLocales); 1993 } 1994 } 1995 mAssets.setConfiguration(mConfiguration.mcc, mConfiguration.mnc, 1996 adjustLanguageTag(mResolvedLocale.toLanguageTag()), 1997 mConfiguration.orientation, 1998 mConfiguration.touchscreen, 1999 mConfiguration.densityDpi, mConfiguration.keyboard, 2000 keyboardHidden, mConfiguration.navigation, width, height, 2001 mConfiguration.smallestScreenWidthDp, 2002 mConfiguration.screenWidthDp, mConfiguration.screenHeightDp, 2003 mConfiguration.screenLayout, mConfiguration.uiMode, 2004 Build.VERSION.RESOURCES_SDK_INT); 2005 2006 if (DEBUG_CONFIG) { 2007 Slog.i(TAG, "**** Updating config of " + this + ": final config is " 2008 + mConfiguration + " final compat is " + mCompatibilityInfo); 2009 } 2010 2011 mDrawableCache.onConfigurationChange(configChanges); 2012 mColorDrawableCache.onConfigurationChange(configChanges); 2013 mColorStateListCache.onConfigurationChange(configChanges); 2014 mAnimatorCache.onConfigurationChange(configChanges); 2015 mStateListAnimatorCache.onConfigurationChange(configChanges); 2016 2017 flushLayoutCache(); 2018 } 2019 synchronized (sSync) { 2020 if (mPluralRule != null) { 2021 mPluralRule = PluralRules.forLocale(mResolvedLocale); 2022 } 2023 } 2024 } 2025 2026 /** 2027 * Called by ConfigurationBoundResourceCacheTest via reflection. 2028 */ 2029 private int calcConfigChanges(Configuration config) { 2030 int configChanges = 0xfffffff; 2031 if (config != null) { 2032 mTmpConfig.setTo(config); 2033 int density = config.densityDpi; 2034 if (density == Configuration.DENSITY_DPI_UNDEFINED) { 2035 density = mMetrics.noncompatDensityDpi; 2036 } 2037 2038 mCompatibilityInfo.applyToConfiguration(density, mTmpConfig); 2039 2040 if (mTmpConfig.getLocales().isEmpty()) { 2041 mTmpConfig.setLocales(LocaleList.getDefault()); 2042 } 2043 configChanges = mConfiguration.updateFrom(mTmpConfig); 2044 configChanges = ActivityInfo.activityInfoConfigToNative(configChanges); 2045 } 2046 return configChanges; 2047 } 2048 2049 /** 2050 * {@code Locale.toLanguageTag} will transform the obsolete (and deprecated) 2051 * language codes "in", "ji" and "iw" to "id", "yi" and "he" respectively. 2052 * 2053 * All released versions of android prior to "L" used the deprecated language 2054 * tags, so we will need to support them for backwards compatibility. 2055 * 2056 * Note that this conversion needs to take place *after* the call to 2057 * {@code toLanguageTag} because that will convert all the deprecated codes to 2058 * the new ones, even if they're set manually. 2059 */ 2060 private static String adjustLanguageTag(String languageTag) { 2061 final int separator = languageTag.indexOf('-'); 2062 final String language; 2063 final String remainder; 2064 2065 if (separator == -1) { 2066 language = languageTag; 2067 remainder = ""; 2068 } else { 2069 language = languageTag.substring(0, separator); 2070 remainder = languageTag.substring(separator); 2071 } 2072 2073 return Locale.adjustLanguageCode(language) + remainder; 2074 } 2075 2076 /** 2077 * Update the system resources configuration if they have previously 2078 * been initialized. 2079 * 2080 * @hide 2081 */ 2082 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics, 2083 CompatibilityInfo compat) { 2084 if (mSystem != null) { 2085 mSystem.updateConfiguration(config, metrics, compat); 2086 //Log.i(TAG, "Updated system resources " + mSystem 2087 // + ": " + mSystem.getConfiguration()); 2088 } 2089 } 2090 2091 /** 2092 * Return the current display metrics that are in effect for this resource 2093 * object. The returned object should be treated as read-only. 2094 * 2095 * @return The resource's current display metrics. 2096 */ 2097 public DisplayMetrics getDisplayMetrics() { 2098 if (DEBUG_CONFIG) Slog.v(TAG, "Returning DisplayMetrics: " + mMetrics.widthPixels 2099 + "x" + mMetrics.heightPixels + " " + mMetrics.density); 2100 return mMetrics; 2101 } 2102 2103 /** 2104 * Return the current configuration that is in effect for this resource 2105 * object. The returned object should be treated as read-only. 2106 * 2107 * @return The resource's current configuration. 2108 */ 2109 public Configuration getConfiguration() { 2110 return mConfiguration; 2111 } 2112 2113 /** @hide */ 2114 public Configuration[] getSizeConfigurations() { 2115 return mAssets.getSizeConfigurations(); 2116 }; 2117 2118 /** 2119 * Return the compatibility mode information for the application. 2120 * The returned object should be treated as read-only. 2121 * 2122 * @return compatibility info. 2123 * @hide 2124 */ 2125 public CompatibilityInfo getCompatibilityInfo() { 2126 return mCompatibilityInfo; 2127 } 2128 2129 /** 2130 * This is just for testing. 2131 * @hide 2132 */ 2133 public void setCompatibilityInfo(CompatibilityInfo ci) { 2134 if (ci != null) { 2135 mCompatibilityInfo = ci; 2136 updateConfiguration(mConfiguration, mMetrics); 2137 } 2138 } 2139 2140 /** 2141 * Return a resource identifier for the given resource name. A fully 2142 * qualified resource name is of the form "package:type/entry". The first 2143 * two components (package and type) are optional if defType and 2144 * defPackage, respectively, are specified here. 2145 * 2146 * <p>Note: use of this function is discouraged. It is much more 2147 * efficient to retrieve resources by identifier than by name. 2148 * 2149 * @param name The name of the desired resource. 2150 * @param defType Optional default resource type to find, if "type/" is 2151 * not included in the name. Can be null to require an 2152 * explicit type. 2153 * @param defPackage Optional default package to find, if "package:" is 2154 * not included in the name. Can be null to require an 2155 * explicit package. 2156 * 2157 * @return int The associated resource identifier. Returns 0 if no such 2158 * resource was found. (0 is not a valid resource ID.) 2159 */ 2160 public int getIdentifier(String name, String defType, String defPackage) { 2161 if (name == null) { 2162 throw new NullPointerException("name is null"); 2163 } 2164 try { 2165 return Integer.parseInt(name); 2166 } catch (Exception e) { 2167 // Ignore 2168 } 2169 return mAssets.getResourceIdentifier(name, defType, defPackage); 2170 } 2171 2172 /** 2173 * Return true if given resource identifier includes a package. 2174 * 2175 * @hide 2176 */ 2177 public static boolean resourceHasPackage(@AnyRes int resid) { 2178 return (resid >>> 24) != 0; 2179 } 2180 2181 /** 2182 * Return the full name for a given resource identifier. This name is 2183 * a single string of the form "package:type/entry". 2184 * 2185 * @param resid The resource identifier whose name is to be retrieved. 2186 * 2187 * @return A string holding the name of the resource. 2188 * 2189 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2190 * 2191 * @see #getResourcePackageName 2192 * @see #getResourceTypeName 2193 * @see #getResourceEntryName 2194 */ 2195 public String getResourceName(@AnyRes int resid) throws NotFoundException { 2196 String str = mAssets.getResourceName(resid); 2197 if (str != null) return str; 2198 throw new NotFoundException("Unable to find resource ID #0x" 2199 + Integer.toHexString(resid)); 2200 } 2201 2202 /** 2203 * Return the package name for a given resource identifier. 2204 * 2205 * @param resid The resource identifier whose package name is to be 2206 * retrieved. 2207 * 2208 * @return A string holding the package name of the resource. 2209 * 2210 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2211 * 2212 * @see #getResourceName 2213 */ 2214 public String getResourcePackageName(@AnyRes int resid) throws NotFoundException { 2215 String str = mAssets.getResourcePackageName(resid); 2216 if (str != null) return str; 2217 throw new NotFoundException("Unable to find resource ID #0x" 2218 + Integer.toHexString(resid)); 2219 } 2220 2221 /** 2222 * Return the type name for a given resource identifier. 2223 * 2224 * @param resid The resource identifier whose type name is to be 2225 * retrieved. 2226 * 2227 * @return A string holding the type name of the resource. 2228 * 2229 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2230 * 2231 * @see #getResourceName 2232 */ 2233 public String getResourceTypeName(@AnyRes int resid) throws NotFoundException { 2234 String str = mAssets.getResourceTypeName(resid); 2235 if (str != null) return str; 2236 throw new NotFoundException("Unable to find resource ID #0x" 2237 + Integer.toHexString(resid)); 2238 } 2239 2240 /** 2241 * Return the entry name for a given resource identifier. 2242 * 2243 * @param resid The resource identifier whose entry name is to be 2244 * retrieved. 2245 * 2246 * @return A string holding the entry name of the resource. 2247 * 2248 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2249 * 2250 * @see #getResourceName 2251 */ 2252 public String getResourceEntryName(@AnyRes int resid) throws NotFoundException { 2253 String str = mAssets.getResourceEntryName(resid); 2254 if (str != null) return str; 2255 throw new NotFoundException("Unable to find resource ID #0x" 2256 + Integer.toHexString(resid)); 2257 } 2258 2259 /** 2260 * Parse a series of {@link android.R.styleable#Extra <extra>} tags from 2261 * an XML file. You call this when you are at the parent tag of the 2262 * extra tags, and it will return once all of the child tags have been parsed. 2263 * This will call {@link #parseBundleExtra} for each extra tag encountered. 2264 * 2265 * @param parser The parser from which to retrieve the extras. 2266 * @param outBundle A Bundle in which to place all parsed extras. 2267 * @throws XmlPullParserException 2268 * @throws IOException 2269 */ 2270 public void parseBundleExtras(XmlResourceParser parser, Bundle outBundle) 2271 throws XmlPullParserException, IOException { 2272 int outerDepth = parser.getDepth(); 2273 int type; 2274 while ((type=parser.next()) != XmlPullParser.END_DOCUMENT 2275 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 2276 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 2277 continue; 2278 } 2279 2280 String nodeName = parser.getName(); 2281 if (nodeName.equals("extra")) { 2282 parseBundleExtra("extra", parser, outBundle); 2283 XmlUtils.skipCurrentTag(parser); 2284 2285 } else { 2286 XmlUtils.skipCurrentTag(parser); 2287 } 2288 } 2289 } 2290 2291 /** 2292 * Parse a name/value pair out of an XML tag holding that data. The 2293 * AttributeSet must be holding the data defined by 2294 * {@link android.R.styleable#Extra}. The following value types are supported: 2295 * <ul> 2296 * <li> {@link TypedValue#TYPE_STRING}: 2297 * {@link Bundle#putCharSequence Bundle.putCharSequence()} 2298 * <li> {@link TypedValue#TYPE_INT_BOOLEAN}: 2299 * {@link Bundle#putCharSequence Bundle.putBoolean()} 2300 * <li> {@link TypedValue#TYPE_FIRST_INT}-{@link TypedValue#TYPE_LAST_INT}: 2301 * {@link Bundle#putCharSequence Bundle.putBoolean()} 2302 * <li> {@link TypedValue#TYPE_FLOAT}: 2303 * {@link Bundle#putCharSequence Bundle.putFloat()} 2304 * </ul> 2305 * 2306 * @param tagName The name of the tag these attributes come from; this is 2307 * only used for reporting error messages. 2308 * @param attrs The attributes from which to retrieve the name/value pair. 2309 * @param outBundle The Bundle in which to place the parsed value. 2310 * @throws XmlPullParserException If the attributes are not valid. 2311 */ 2312 public void parseBundleExtra(String tagName, AttributeSet attrs, 2313 Bundle outBundle) throws XmlPullParserException { 2314 TypedArray sa = obtainAttributes(attrs, 2315 com.android.internal.R.styleable.Extra); 2316 2317 String name = sa.getString( 2318 com.android.internal.R.styleable.Extra_name); 2319 if (name == null) { 2320 sa.recycle(); 2321 throw new XmlPullParserException("<" + tagName 2322 + "> requires an android:name attribute at " 2323 + attrs.getPositionDescription()); 2324 } 2325 2326 TypedValue v = sa.peekValue( 2327 com.android.internal.R.styleable.Extra_value); 2328 if (v != null) { 2329 if (v.type == TypedValue.TYPE_STRING) { 2330 CharSequence cs = v.coerceToString(); 2331 outBundle.putCharSequence(name, cs); 2332 } else if (v.type == TypedValue.TYPE_INT_BOOLEAN) { 2333 outBundle.putBoolean(name, v.data != 0); 2334 } else if (v.type >= TypedValue.TYPE_FIRST_INT 2335 && v.type <= TypedValue.TYPE_LAST_INT) { 2336 outBundle.putInt(name, v.data); 2337 } else if (v.type == TypedValue.TYPE_FLOAT) { 2338 outBundle.putFloat(name, v.getFloat()); 2339 } else { 2340 sa.recycle(); 2341 throw new XmlPullParserException("<" + tagName 2342 + "> only supports string, integer, float, color, and boolean at " 2343 + attrs.getPositionDescription()); 2344 } 2345 } else { 2346 sa.recycle(); 2347 throw new XmlPullParserException("<" + tagName 2348 + "> requires an android:value or android:resource attribute at " 2349 + attrs.getPositionDescription()); 2350 } 2351 2352 sa.recycle(); 2353 } 2354 2355 /** 2356 * Retrieve underlying AssetManager storage for these resources. 2357 */ 2358 public final AssetManager getAssets() { 2359 return mAssets; 2360 } 2361 2362 /** 2363 * Call this to remove all cached loaded layout resources from the 2364 * Resources object. Only intended for use with performance testing 2365 * tools. 2366 */ 2367 public final void flushLayoutCache() { 2368 synchronized (mCachedXmlBlockIds) { 2369 // First see if this block is in our cache. 2370 final int num = mCachedXmlBlockIds.length; 2371 for (int i=0; i<num; i++) { 2372 mCachedXmlBlockIds[i] = -0; 2373 XmlBlock oldBlock = mCachedXmlBlocks[i]; 2374 if (oldBlock != null) { 2375 oldBlock.close(); 2376 } 2377 mCachedXmlBlocks[i] = null; 2378 } 2379 } 2380 } 2381 2382 /** 2383 * Start preloading of resource data using this Resources object. Only 2384 * for use by the zygote process for loading common system resources. 2385 * {@hide} 2386 */ 2387 public final void startPreloading() { 2388 synchronized (sSync) { 2389 if (sPreloaded) { 2390 throw new IllegalStateException("Resources already preloaded"); 2391 } 2392 sPreloaded = true; 2393 mPreloading = true; 2394 mConfiguration.densityDpi = DisplayMetrics.DENSITY_DEVICE; 2395 updateConfiguration(null, null); 2396 } 2397 } 2398 2399 /** 2400 * Called by zygote when it is done preloading resources, to change back 2401 * to normal Resources operation. 2402 */ 2403 public final void finishPreloading() { 2404 if (mPreloading) { 2405 mPreloading = false; 2406 flushLayoutCache(); 2407 } 2408 } 2409 2410 /** 2411 * @hide 2412 */ 2413 public LongSparseArray<ConstantState> getPreloadedDrawables() { 2414 return sPreloadedDrawables[0]; 2415 } 2416 2417 private boolean verifyPreloadConfig(int changingConfigurations, int allowVarying, 2418 int resourceId, String name) { 2419 // We allow preloading of resources even if they vary by font scale (which 2420 // doesn't impact resource selection) or density (which we handle specially by 2421 // simply turning off all preloading), as well as any other configs specified 2422 // by the caller. 2423 if (((changingConfigurations&~(ActivityInfo.CONFIG_FONT_SCALE | 2424 ActivityInfo.CONFIG_DENSITY)) & ~allowVarying) != 0) { 2425 String resName; 2426 try { 2427 resName = getResourceName(resourceId); 2428 } catch (NotFoundException e) { 2429 resName = "?"; 2430 } 2431 // This should never happen in production, so we should log a 2432 // warning even if we're not debugging. 2433 Log.w(TAG, "Preloaded " + name + " resource #0x" 2434 + Integer.toHexString(resourceId) 2435 + " (" + resName + ") that varies with configuration!!"); 2436 return false; 2437 } 2438 if (TRACE_FOR_PRELOAD) { 2439 String resName; 2440 try { 2441 resName = getResourceName(resourceId); 2442 } catch (NotFoundException e) { 2443 resName = "?"; 2444 } 2445 Log.w(TAG, "Preloading " + name + " resource #0x" 2446 + Integer.toHexString(resourceId) 2447 + " (" + resName + ")"); 2448 } 2449 return true; 2450 } 2451 2452 @Nullable 2453 Drawable loadDrawable(TypedValue value, int id, Theme theme) throws NotFoundException { 2454 try { 2455 if (TRACE_FOR_PRELOAD) { 2456 // Log only framework resources 2457 if ((id >>> 24) == 0x1) { 2458 final String name = getResourceName(id); 2459 if (name != null) { 2460 Log.d("PreloadDrawable", name); 2461 } 2462 } 2463 } 2464 2465 final boolean isColorDrawable; 2466 final DrawableCache caches; 2467 final long key; 2468 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT 2469 && value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2470 isColorDrawable = true; 2471 caches = mColorDrawableCache; 2472 key = value.data; 2473 } else { 2474 isColorDrawable = false; 2475 caches = mDrawableCache; 2476 key = (((long) value.assetCookie) << 32) | value.data; 2477 } 2478 2479 // First, check whether we have a cached version of this drawable 2480 // that was inflated against the specified theme. 2481 if (!mPreloading) { 2482 final Drawable cachedDrawable = caches.getInstance(key, theme); 2483 if (cachedDrawable != null) { 2484 return cachedDrawable; 2485 } 2486 } 2487 2488 // Next, check preloaded drawables. These may contain unresolved theme 2489 // attributes. 2490 final ConstantState cs; 2491 if (isColorDrawable) { 2492 cs = sPreloadedColorDrawables.get(key); 2493 } else { 2494 cs = sPreloadedDrawables[mConfiguration.getLayoutDirection()].get(key); 2495 } 2496 2497 Drawable dr; 2498 if (cs != null) { 2499 dr = cs.newDrawable(this); 2500 } else if (isColorDrawable) { 2501 dr = new ColorDrawable(value.data); 2502 } else { 2503 dr = loadDrawableForCookie(value, id, null); 2504 } 2505 2506 // Determine if the drawable has unresolved theme attributes. If it 2507 // does, we'll need to apply a theme and store it in a theme-specific 2508 // cache. 2509 final boolean canApplyTheme = dr != null && dr.canApplyTheme(); 2510 if (canApplyTheme && theme != null) { 2511 dr = dr.mutate(); 2512 dr.applyTheme(theme); 2513 dr.clearMutated(); 2514 } 2515 2516 // If we were able to obtain a drawable, store it in the appropriate 2517 // cache: preload, not themed, null theme, or theme-specific. 2518 if (dr != null) { 2519 dr.setChangingConfigurations(value.changingConfigurations); 2520 cacheDrawable(value, isColorDrawable, caches, theme, canApplyTheme, key, dr); 2521 } 2522 2523 return dr; 2524 } catch (Exception e) { 2525 String name; 2526 try { 2527 name = getResourceName(id); 2528 } catch (NotFoundException e2) { 2529 name = "(missing name)"; 2530 } 2531 2532 // The target drawable might fail to load for any number of 2533 // reasons, but we always want to include the resource name. 2534 // Since the client already expects this method to throw a 2535 // NotFoundException, just throw one of those. 2536 final NotFoundException nfe = new NotFoundException("Drawable " + name 2537 + " with resource ID #0x" + Integer.toHexString(id), e); 2538 nfe.setStackTrace(new StackTraceElement[0]); 2539 throw nfe; 2540 } 2541 } 2542 2543 private void cacheDrawable(TypedValue value, boolean isColorDrawable, DrawableCache caches, 2544 Theme theme, boolean usesTheme, long key, Drawable dr) { 2545 final ConstantState cs = dr.getConstantState(); 2546 if (cs == null) { 2547 return; 2548 } 2549 2550 if (mPreloading) { 2551 final int changingConfigs = cs.getChangingConfigurations(); 2552 if (isColorDrawable) { 2553 if (verifyPreloadConfig(changingConfigs, 0, value.resourceId, "drawable")) { 2554 sPreloadedColorDrawables.put(key, cs); 2555 } 2556 } else { 2557 if (verifyPreloadConfig( 2558 changingConfigs, LAYOUT_DIR_CONFIG, value.resourceId, "drawable")) { 2559 if ((changingConfigs & LAYOUT_DIR_CONFIG) == 0) { 2560 // If this resource does not vary based on layout direction, 2561 // we can put it in all of the preload maps. 2562 sPreloadedDrawables[0].put(key, cs); 2563 sPreloadedDrawables[1].put(key, cs); 2564 } else { 2565 // Otherwise, only in the layout dir we loaded it for. 2566 sPreloadedDrawables[mConfiguration.getLayoutDirection()].put(key, cs); 2567 } 2568 } 2569 } 2570 } else { 2571 synchronized (mAccessLock) { 2572 caches.put(key, theme, cs, usesTheme); 2573 } 2574 } 2575 } 2576 2577 /** 2578 * Loads a drawable from XML or resources stream. 2579 */ 2580 private Drawable loadDrawableForCookie(TypedValue value, int id, Theme theme) { 2581 if (value.string == null) { 2582 throw new NotFoundException("Resource \"" + getResourceName(id) + "\" (" 2583 + Integer.toHexString(id) + ") is not a Drawable (color or path): " + value); 2584 } 2585 2586 final String file = value.string.toString(); 2587 2588 if (TRACE_FOR_MISS_PRELOAD) { 2589 // Log only framework resources 2590 if ((id >>> 24) == 0x1) { 2591 final String name = getResourceName(id); 2592 if (name != null) { 2593 Log.d(TAG, "Loading framework drawable #" + Integer.toHexString(id) 2594 + ": " + name + " at " + file); 2595 } 2596 } 2597 } 2598 2599 if (DEBUG_LOAD) { 2600 Log.v(TAG, "Loading drawable for cookie " + value.assetCookie + ": " + file); 2601 } 2602 2603 final Drawable dr; 2604 2605 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 2606 try { 2607 if (file.endsWith(".xml")) { 2608 final XmlResourceParser rp = loadXmlResourceParser( 2609 file, id, value.assetCookie, "drawable"); 2610 dr = Drawable.createFromXml(this, rp, theme); 2611 rp.close(); 2612 } else { 2613 final InputStream is = mAssets.openNonAsset( 2614 value.assetCookie, file, AssetManager.ACCESS_STREAMING); 2615 dr = Drawable.createFromResourceStream(this, value, is, file, null); 2616 is.close(); 2617 } 2618 } catch (Exception e) { 2619 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2620 final NotFoundException rnf = new NotFoundException( 2621 "File " + file + " from drawable resource ID #0x" + Integer.toHexString(id)); 2622 rnf.initCause(e); 2623 throw rnf; 2624 } 2625 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2626 2627 return dr; 2628 } 2629 2630 @Nullable 2631 ColorStateList loadColorStateList(TypedValue value, int id, Theme theme) 2632 throws NotFoundException { 2633 if (TRACE_FOR_PRELOAD) { 2634 // Log only framework resources 2635 if ((id >>> 24) == 0x1) { 2636 final String name = getResourceName(id); 2637 if (name != null) android.util.Log.d("PreloadColorStateList", name); 2638 } 2639 } 2640 2641 final long key = (((long) value.assetCookie) << 32) | value.data; 2642 2643 ColorStateList csl; 2644 2645 // Handle inline color definitions. 2646 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT 2647 && value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2648 final android.content.res.ConstantState<ColorStateList> factory = 2649 sPreloadedColorStateLists.get(key); 2650 if (factory != null) { 2651 return factory.newInstance(); 2652 } 2653 2654 csl = ColorStateList.valueOf(value.data); 2655 2656 if (mPreloading) { 2657 if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId, 2658 "color")) { 2659 sPreloadedColorStateLists.put(key, csl.getConstantState()); 2660 } 2661 } 2662 2663 return csl; 2664 } 2665 2666 final ConfigurationBoundResourceCache<ColorStateList> cache = mColorStateListCache; 2667 csl = cache.getInstance(key, theme); 2668 if (csl != null) { 2669 return csl; 2670 } 2671 2672 final android.content.res.ConstantState<ColorStateList> factory = 2673 sPreloadedColorStateLists.get(key); 2674 if (factory != null) { 2675 csl = factory.newInstance(this, theme); 2676 } 2677 2678 if (csl == null) { 2679 csl = loadColorStateListForCookie(value, id, theme); 2680 } 2681 2682 if (csl != null) { 2683 if (mPreloading) { 2684 if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId, 2685 "color")) { 2686 sPreloadedColorStateLists.put(key, csl.getConstantState()); 2687 } 2688 } else { 2689 cache.put(key, theme, csl.getConstantState()); 2690 } 2691 } 2692 2693 return csl; 2694 } 2695 2696 private ColorStateList loadColorStateListForCookie(TypedValue value, int id, Theme theme) { 2697 if (value.string == null) { 2698 throw new UnsupportedOperationException( 2699 "Can't convert to color state list: type=0x" + value.type); 2700 } 2701 2702 final String file = value.string.toString(); 2703 2704 if (TRACE_FOR_MISS_PRELOAD) { 2705 // Log only framework resources 2706 if ((id >>> 24) == 0x1) { 2707 final String name = getResourceName(id); 2708 if (name != null) { 2709 Log.d(TAG, "Loading framework color state list #" + Integer.toHexString(id) 2710 + ": " + name + " at " + file); 2711 } 2712 } 2713 } 2714 2715 if (DEBUG_LOAD) { 2716 Log.v(TAG, "Loading color state list for cookie " + value.assetCookie + ": " + file); 2717 } 2718 2719 final ColorStateList csl; 2720 2721 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 2722 if (file.endsWith(".xml")) { 2723 try { 2724 final XmlResourceParser rp = loadXmlResourceParser( 2725 file, id, value.assetCookie, "colorstatelist"); 2726 csl = ColorStateList.createFromXml(this, rp, theme); 2727 rp.close(); 2728 } catch (Exception e) { 2729 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2730 final NotFoundException rnf = new NotFoundException( 2731 "File " + file + " from color state list resource ID #0x" 2732 + Integer.toHexString(id)); 2733 rnf.initCause(e); 2734 throw rnf; 2735 } 2736 } else { 2737 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2738 throw new NotFoundException( 2739 "File " + file + " from drawable resource ID #0x" 2740 + Integer.toHexString(id) + ": .xml extension required"); 2741 } 2742 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2743 2744 return csl; 2745 } 2746 2747 /*package*/ XmlResourceParser loadXmlResourceParser(int id, String type) 2748 throws NotFoundException { 2749 final TypedValue value = obtainTempTypedValue(id); 2750 try { 2751 if (value.type == TypedValue.TYPE_STRING) { 2752 return loadXmlResourceParser(value.string.toString(), id, 2753 value.assetCookie, type); 2754 } 2755 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 2756 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 2757 } finally { 2758 releaseTempTypedValue(value); 2759 } 2760 } 2761 2762 /*package*/ XmlResourceParser loadXmlResourceParser(String file, int id, 2763 int assetCookie, String type) throws NotFoundException { 2764 if (id != 0) { 2765 try { 2766 // These may be compiled... 2767 synchronized (mCachedXmlBlockIds) { 2768 // First see if this block is in our cache. 2769 final int num = mCachedXmlBlockIds.length; 2770 for (int i=0; i<num; i++) { 2771 if (mCachedXmlBlockIds[i] == id) { 2772 //System.out.println("**** REUSING XML BLOCK! id=" 2773 // + id + ", index=" + i); 2774 return mCachedXmlBlocks[i].newParser(); 2775 } 2776 } 2777 2778 // Not in the cache, create a new block and put it at 2779 // the next slot in the cache. 2780 XmlBlock block = mAssets.openXmlBlockAsset( 2781 assetCookie, file); 2782 if (block != null) { 2783 int pos = mLastCachedXmlBlockIndex+1; 2784 if (pos >= num) pos = 0; 2785 mLastCachedXmlBlockIndex = pos; 2786 XmlBlock oldBlock = mCachedXmlBlocks[pos]; 2787 if (oldBlock != null) { 2788 oldBlock.close(); 2789 } 2790 mCachedXmlBlockIds[pos] = id; 2791 mCachedXmlBlocks[pos] = block; 2792 //System.out.println("**** CACHING NEW XML BLOCK! id=" 2793 // + id + ", index=" + pos); 2794 return block.newParser(); 2795 } 2796 } 2797 } catch (Exception e) { 2798 NotFoundException rnf = new NotFoundException( 2799 "File " + file + " from xml type " + type + " resource ID #0x" 2800 + Integer.toHexString(id)); 2801 rnf.initCause(e); 2802 throw rnf; 2803 } 2804 } 2805 2806 throw new NotFoundException( 2807 "File " + file + " from xml type " + type + " resource ID #0x" 2808 + Integer.toHexString(id)); 2809 } 2810 2811 /** 2812 * Obtains styled attributes from the theme, if available, or unstyled 2813 * resources if the theme is null. 2814 * 2815 * @hide 2816 */ 2817 public static TypedArray obtainAttributes( 2818 Resources res, Theme theme, AttributeSet set, int[] attrs) { 2819 if (theme == null) { 2820 return res.obtainAttributes(set, attrs); 2821 } 2822 return theme.obtainStyledAttributes(set, attrs, 0, 0); 2823 } 2824 2825 private Resources() { 2826 mAssets = AssetManager.getSystem(); 2827 mClassLoader = ClassLoader.getSystemClassLoader(); 2828 // NOTE: Intentionally leaving this uninitialized (all values set 2829 // to zero), so that anyone who tries to do something that requires 2830 // metrics will get a very wrong value. 2831 mConfiguration.setToDefaults(); 2832 mMetrics.setToDefaults(); 2833 updateConfiguration(null, null); 2834 mAssets.ensureStringBlocks(); 2835 } 2836} 2837