Resources.java revision 10979613899ca3963c7d64d25d5f8ef7db1dde84
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 // Cyclical cache used for recently-accessed XML files. 155 private int mLastCachedXmlBlockIndex = -1; 156 private final String[] mCachedXmlBlockFiles = new String[4]; 157 private final XmlBlock[] mCachedXmlBlocks = new XmlBlock[4]; 158 159 final AssetManager mAssets; 160 final ClassLoader mClassLoader; 161 final DisplayMetrics mMetrics = new DisplayMetrics(); 162 163 private final Configuration mConfiguration = new Configuration(); 164 private Locale mResolvedLocale = null; 165 private PluralRules mPluralRule; 166 167 private CompatibilityInfo mCompatibilityInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 168 169 static { 170 sPreloadedDrawables = new LongSparseArray[2]; 171 sPreloadedDrawables[0] = new LongSparseArray<>(); 172 sPreloadedDrawables[1] = new LongSparseArray<>(); 173 } 174 175 /** 176 * Returns the most appropriate default theme for the specified target SDK version. 177 * <ul> 178 * <li>Below API 11: Gingerbread 179 * <li>APIs 11 thru 14: Holo 180 * <li>APIs 14 thru XX: Device default dark 181 * <li>API XX and above: Device default light with dark action bar 182 * </ul> 183 * 184 * @param curTheme The current theme, or 0 if not specified. 185 * @param targetSdkVersion The target SDK version. 186 * @return A theme resource identifier 187 * @hide 188 */ 189 public static int selectDefaultTheme(int curTheme, int targetSdkVersion) { 190 return selectSystemTheme(curTheme, targetSdkVersion, 191 com.android.internal.R.style.Theme, 192 com.android.internal.R.style.Theme_Holo, 193 com.android.internal.R.style.Theme_DeviceDefault, 194 com.android.internal.R.style.Theme_DeviceDefault_Light_DarkActionBar); 195 } 196 197 /** @hide */ 198 public static int selectSystemTheme(int curTheme, int targetSdkVersion, int orig, int holo, 199 int dark, int deviceDefault) { 200 if (curTheme != 0) { 201 return curTheme; 202 } 203 if (targetSdkVersion < Build.VERSION_CODES.HONEYCOMB) { 204 return orig; 205 } 206 if (targetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 207 return holo; 208 } 209 if (targetSdkVersion < Build.VERSION_CODES.CUR_DEVELOPMENT) { 210 return dark; 211 } 212 return deviceDefault; 213 } 214 215 /** 216 * @return the inflater used to create drawable objects 217 * @hide Pending API finalization. 218 */ 219 public final DrawableInflater getDrawableInflater() { 220 if (mDrawableInflater == null) { 221 mDrawableInflater = new DrawableInflater(this, mClassLoader); 222 } 223 return mDrawableInflater; 224 } 225 226 /** 227 * Used by AnimatorInflater. 228 * 229 * @hide 230 */ 231 public ConfigurationBoundResourceCache<Animator> getAnimatorCache() { 232 return mAnimatorCache; 233 } 234 235 /** 236 * Used by AnimatorInflater. 237 * 238 * @hide 239 */ 240 public ConfigurationBoundResourceCache<StateListAnimator> getStateListAnimatorCache() { 241 return mStateListAnimatorCache; 242 } 243 244 /** 245 * This exception is thrown by the resource APIs when a requested resource 246 * can not be found. 247 */ 248 public static class NotFoundException extends RuntimeException { 249 public NotFoundException() { 250 } 251 252 public NotFoundException(String name) { 253 super(name); 254 } 255 256 public NotFoundException(String name, Exception cause) { 257 super(name, cause); 258 } 259 } 260 261 /** 262 * Create a new Resources object on top of an existing set of assets in an 263 * AssetManager. 264 * 265 * @param assets Previously created AssetManager. 266 * @param metrics Current display metrics to consider when 267 * selecting/computing resource values. 268 * @param config Desired device configuration to consider when 269 * selecting/computing resource values (optional). 270 */ 271 public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config) { 272 this(assets, metrics, config, CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO, null); 273 } 274 275 /** 276 * Creates a new Resources object with CompatibilityInfo. 277 * 278 * @param assets Previously created AssetManager. 279 * @param metrics Current display metrics to consider when 280 * selecting/computing resource values. 281 * @param config Desired device configuration to consider when 282 * selecting/computing resource values (optional). 283 * @param compatInfo this resource's compatibility info. Must not be null. 284 * @param classLoader class loader for the package used to load custom 285 * resource classes, may be {@code null} to use system 286 * class loader 287 * @hide 288 */ 289 public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config, 290 CompatibilityInfo compatInfo, @Nullable ClassLoader classLoader) { 291 mAssets = assets; 292 mClassLoader = classLoader == null ? ClassLoader.getSystemClassLoader() : classLoader; 293 mMetrics.setToDefaults(); 294 if (compatInfo != null) { 295 mCompatibilityInfo = compatInfo; 296 } 297 updateConfiguration(config, metrics); 298 assets.ensureStringBlocks(); 299 } 300 301 /** 302 * Return a global shared Resources object that provides access to only 303 * system resources (no application resources), and is not configured for 304 * the current screen (can not use dimension units, does not change based 305 * on orientation, etc). 306 */ 307 public static Resources getSystem() { 308 synchronized (sSync) { 309 Resources ret = mSystem; 310 if (ret == null) { 311 ret = new Resources(); 312 mSystem = ret; 313 } 314 315 return ret; 316 } 317 } 318 319 /** 320 * Return the Locale resulting from locale negotiation between the Resources and the 321 * Configuration objects used to construct the Resources. The locale is used for retrieving 322 * resources as well as for determining plural rules. 323 */ 324 @NonNull 325 public Locale getResolvedLocale() { 326 return mResolvedLocale; 327 } 328 329 /** 330 * Return the string value associated with a particular resource ID. The 331 * returned object will be a String if this is a plain string; it will be 332 * some other type of CharSequence if it is styled. 333 * {@more} 334 * 335 * @param id The desired resource identifier, as generated by the aapt 336 * tool. This integer encodes the package, type, and resource 337 * entry. The value 0 is an invalid identifier. 338 * 339 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 340 * 341 * @return CharSequence The string data associated with the resource, plus 342 * possibly styled text information. 343 */ 344 public CharSequence getText(@StringRes int id) throws NotFoundException { 345 CharSequence res = mAssets.getResourceText(id); 346 if (res != null) { 347 return res; 348 } 349 throw new NotFoundException("String resource ID #0x" 350 + Integer.toHexString(id)); 351 } 352 353 /** 354 * Returns the character sequence necessary for grammatically correct pluralization 355 * of the given resource ID for the given quantity. 356 * Note that the character sequence is selected based solely on grammatical necessity, 357 * and that such rules differ between languages. Do not assume you know which string 358 * will be returned for a given quantity. See 359 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 360 * for more detail. 361 * 362 * @param id The desired resource identifier, as generated by the aapt 363 * tool. This integer encodes the package, type, and resource 364 * entry. The value 0 is an invalid identifier. 365 * @param quantity The number used to get the correct string for the current language's 366 * plural rules. 367 * 368 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 369 * 370 * @return CharSequence The string data associated with the resource, plus 371 * possibly styled text information. 372 */ 373 public CharSequence getQuantityText(@PluralsRes int id, int quantity) 374 throws NotFoundException { 375 PluralRules rule = getPluralRule(); 376 CharSequence res = mAssets.getResourceBagText(id, 377 attrForQuantityCode(rule.select(quantity))); 378 if (res != null) { 379 return res; 380 } 381 res = mAssets.getResourceBagText(id, ID_OTHER); 382 if (res != null) { 383 return res; 384 } 385 throw new NotFoundException("Plural resource ID #0x" + Integer.toHexString(id) 386 + " quantity=" + quantity 387 + " item=" + rule.select(quantity)); 388 } 389 390 private PluralRules getPluralRule() { 391 synchronized (sSync) { 392 if (mPluralRule == null) { 393 mPluralRule = PluralRules.forLocale(mResolvedLocale); 394 } 395 return mPluralRule; 396 } 397 } 398 399 private static int attrForQuantityCode(String quantityCode) { 400 switch (quantityCode) { 401 case PluralRules.KEYWORD_ZERO: return 0x01000005; 402 case PluralRules.KEYWORD_ONE: return 0x01000006; 403 case PluralRules.KEYWORD_TWO: return 0x01000007; 404 case PluralRules.KEYWORD_FEW: return 0x01000008; 405 case PluralRules.KEYWORD_MANY: return 0x01000009; 406 default: return ID_OTHER; 407 } 408 } 409 410 /** 411 * Return the string value associated with a particular resource ID. It 412 * will be stripped of any styled text information. 413 * {@more} 414 * 415 * @param id The desired resource identifier, as generated by the aapt 416 * tool. This integer encodes the package, type, and resource 417 * entry. The value 0 is an invalid identifier. 418 * 419 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 420 * 421 * @return String The string data associated with the resource, 422 * stripped of styled text information. 423 */ 424 @NonNull 425 public String getString(@StringRes int id) throws NotFoundException { 426 final CharSequence res = getText(id); 427 if (res != null) { 428 return res.toString(); 429 } 430 throw new NotFoundException("String resource ID #0x" 431 + Integer.toHexString(id)); 432 } 433 434 435 /** 436 * Return the string value associated with a particular resource ID, 437 * substituting the format arguments as defined in {@link java.util.Formatter} 438 * and {@link java.lang.String#format}. It will be stripped of any styled text 439 * information. 440 * {@more} 441 * 442 * @param id The desired resource identifier, as generated by the aapt 443 * tool. This integer encodes the package, type, and resource 444 * entry. The value 0 is an invalid identifier. 445 * 446 * @param formatArgs The format arguments that will be used for substitution. 447 * 448 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 449 * 450 * @return String The string data associated with the resource, 451 * stripped of styled text information. 452 */ 453 @NonNull 454 public String getString(@StringRes int id, Object... formatArgs) throws NotFoundException { 455 final String raw = getString(id); 456 return String.format(mResolvedLocale, raw, formatArgs); 457 } 458 459 /** 460 * Formats the string necessary for grammatically correct pluralization 461 * of the given resource ID for the given quantity, using the given arguments. 462 * Note that the string is selected based solely on grammatical necessity, 463 * and that such rules differ between languages. Do not assume you know which string 464 * will be returned for a given quantity. See 465 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 466 * for more detail. 467 * 468 * <p>Substitution of format arguments works as if using 469 * {@link java.util.Formatter} and {@link java.lang.String#format}. 470 * The resulting string will be stripped of any styled text information. 471 * 472 * @param id The desired resource identifier, as generated by the aapt 473 * tool. This integer encodes the package, type, and resource 474 * entry. The value 0 is an invalid identifier. 475 * @param quantity The number used to get the correct string for the current language's 476 * plural rules. 477 * @param formatArgs The format arguments that will be used for substitution. 478 * 479 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 480 * 481 * @return String The string data associated with the resource, 482 * stripped of styled text information. 483 */ 484 public String getQuantityString(@PluralsRes int id, int quantity, Object... formatArgs) 485 throws NotFoundException { 486 String raw = getQuantityText(id, quantity).toString(); 487 return String.format(mResolvedLocale, raw, formatArgs); 488 } 489 490 /** 491 * Returns the string necessary for grammatically correct pluralization 492 * of the given resource ID for the given quantity. 493 * Note that the string is selected based solely on grammatical necessity, 494 * and that such rules differ between languages. Do not assume you know which string 495 * will be returned for a given quantity. See 496 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 497 * for more detail. 498 * 499 * @param id The desired resource identifier, as generated by the aapt 500 * tool. This integer encodes the package, type, and resource 501 * entry. The value 0 is an invalid identifier. 502 * @param quantity The number used to get the correct string for the current language's 503 * plural rules. 504 * 505 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 506 * 507 * @return String The string data associated with the resource, 508 * stripped of styled text information. 509 */ 510 public String getQuantityString(@PluralsRes int id, int quantity) 511 throws NotFoundException { 512 return getQuantityText(id, quantity).toString(); 513 } 514 515 /** 516 * Return the string value associated with a particular resource ID. The 517 * returned object will be a String if this is a plain string; it will be 518 * some other type of CharSequence if it is styled. 519 * 520 * @param id The desired resource identifier, as generated by the aapt 521 * tool. This integer encodes the package, type, and resource 522 * entry. The value 0 is an invalid identifier. 523 * 524 * @param def The default CharSequence to return. 525 * 526 * @return CharSequence The string data associated with the resource, plus 527 * possibly styled text information, or def if id is 0 or not found. 528 */ 529 public CharSequence getText(@StringRes int id, CharSequence def) { 530 CharSequence res = id != 0 ? mAssets.getResourceText(id) : null; 531 return res != null ? res : def; 532 } 533 534 /** 535 * Return the styled text array associated with a particular resource ID. 536 * 537 * @param id The desired resource identifier, as generated by the aapt 538 * tool. This integer encodes the package, type, and resource 539 * entry. The value 0 is an invalid identifier. 540 * 541 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 542 * 543 * @return The styled text array associated with the resource. 544 */ 545 public CharSequence[] getTextArray(@ArrayRes int id) throws NotFoundException { 546 CharSequence[] res = mAssets.getResourceTextArray(id); 547 if (res != null) { 548 return res; 549 } 550 throw new NotFoundException("Text array resource ID #0x" 551 + Integer.toHexString(id)); 552 } 553 554 /** 555 * Return the string array associated with a particular resource ID. 556 * 557 * @param id The desired resource identifier, as generated by the aapt 558 * tool. This integer encodes the package, type, and resource 559 * entry. The value 0 is an invalid identifier. 560 * 561 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 562 * 563 * @return The string array associated with the resource. 564 */ 565 public String[] getStringArray(@ArrayRes int id) 566 throws NotFoundException { 567 String[] res = mAssets.getResourceStringArray(id); 568 if (res != null) { 569 return res; 570 } 571 throw new NotFoundException("String array resource ID #0x" 572 + Integer.toHexString(id)); 573 } 574 575 /** 576 * Return the int array associated with a particular resource ID. 577 * 578 * @param id The desired resource identifier, as generated by the aapt 579 * tool. This integer encodes the package, type, and resource 580 * entry. The value 0 is an invalid identifier. 581 * 582 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 583 * 584 * @return The int array associated with the resource. 585 */ 586 public int[] getIntArray(@ArrayRes int id) throws NotFoundException { 587 int[] res = mAssets.getArrayIntResource(id); 588 if (res != null) { 589 return res; 590 } 591 throw new NotFoundException("Int array resource ID #0x" 592 + Integer.toHexString(id)); 593 } 594 595 /** 596 * Return an array of heterogeneous values. 597 * 598 * @param id The desired resource identifier, as generated by the aapt 599 * tool. This integer encodes the package, type, and resource 600 * entry. The value 0 is an invalid identifier. 601 * 602 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 603 * 604 * @return Returns a TypedArray holding an array of the array values. 605 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 606 * when done with it. 607 */ 608 public TypedArray obtainTypedArray(@ArrayRes int id) 609 throws NotFoundException { 610 int len = mAssets.getArraySize(id); 611 if (len < 0) { 612 throw new NotFoundException("Array resource ID #0x" 613 + Integer.toHexString(id)); 614 } 615 616 TypedArray array = TypedArray.obtain(this, len); 617 array.mLength = mAssets.retrieveArray(id, array.mData); 618 array.mIndices[0] = 0; 619 620 return array; 621 } 622 623 /** 624 * Retrieve a dimensional for a particular resource ID. Unit 625 * conversions are based on the current {@link DisplayMetrics} associated 626 * with the resources. 627 * 628 * @param id The desired resource identifier, as generated by the aapt 629 * tool. This integer encodes the package, type, and resource 630 * entry. The value 0 is an invalid identifier. 631 * 632 * @return Resource dimension value multiplied by the appropriate 633 * metric. 634 * 635 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 636 * 637 * @see #getDimensionPixelOffset 638 * @see #getDimensionPixelSize 639 */ 640 public float getDimension(@DimenRes int id) throws NotFoundException { 641 final TypedValue value = obtainTempTypedValue(id); 642 try { 643 if (value.type == TypedValue.TYPE_DIMENSION) { 644 return TypedValue.complexToDimension(value.data, mMetrics); 645 } 646 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 647 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 648 } finally { 649 releaseTempTypedValue(value); 650 } 651 } 652 653 /** 654 * Retrieve a dimensional for a particular resource ID for use 655 * as an offset in raw pixels. This is the same as 656 * {@link #getDimension}, except the returned value is converted to 657 * integer pixels for you. An offset conversion involves simply 658 * truncating the base value to an integer. 659 * 660 * @param id The desired resource identifier, as generated by the aapt 661 * tool. This integer encodes the package, type, and resource 662 * entry. The value 0 is an invalid identifier. 663 * 664 * @return Resource dimension value multiplied by the appropriate 665 * metric and truncated to integer pixels. 666 * 667 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 668 * 669 * @see #getDimension 670 * @see #getDimensionPixelSize 671 */ 672 public int getDimensionPixelOffset(@DimenRes int id) throws NotFoundException { 673 final TypedValue value = obtainTempTypedValue(id); 674 try { 675 if (value.type == TypedValue.TYPE_DIMENSION) { 676 return TypedValue.complexToDimensionPixelOffset(value.data, mMetrics); 677 } 678 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 679 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 680 } finally { 681 releaseTempTypedValue(value); 682 } 683 } 684 685 /** 686 * Retrieve a dimensional for a particular resource ID for use 687 * as a size in raw pixels. This is the same as 688 * {@link #getDimension}, except the returned value is converted to 689 * integer pixels for use as a size. A size conversion involves 690 * rounding the base value, and ensuring that a non-zero base value 691 * is at least one pixel in size. 692 * 693 * @param id The desired resource identifier, as generated by the aapt 694 * tool. This integer encodes the package, type, and resource 695 * entry. The value 0 is an invalid identifier. 696 * 697 * @return Resource dimension value multiplied by the appropriate 698 * metric and truncated to integer pixels. 699 * 700 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 701 * 702 * @see #getDimension 703 * @see #getDimensionPixelOffset 704 */ 705 public int getDimensionPixelSize(@DimenRes int id) throws NotFoundException { 706 final TypedValue value = obtainTempTypedValue(id); 707 try { 708 if (value.type == TypedValue.TYPE_DIMENSION) { 709 return TypedValue.complexToDimensionPixelSize(value.data, mMetrics); 710 } 711 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 712 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 713 } finally { 714 releaseTempTypedValue(value); 715 } 716 } 717 718 /** 719 * Retrieve a fractional unit for a particular resource ID. 720 * 721 * @param id The desired resource identifier, as generated by the aapt 722 * tool. This integer encodes the package, type, and resource 723 * entry. The value 0 is an invalid identifier. 724 * @param base The base value of this fraction. In other words, a 725 * standard fraction is multiplied by this value. 726 * @param pbase The parent base value of this fraction. In other 727 * words, a parent fraction (nn%p) is multiplied by this 728 * value. 729 * 730 * @return Attribute fractional value multiplied by the appropriate 731 * base value. 732 * 733 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 734 */ 735 public float getFraction(@FractionRes int id, int base, int pbase) { 736 final TypedValue value = obtainTempTypedValue(id); 737 try { 738 if (value.type == TypedValue.TYPE_FRACTION) { 739 return TypedValue.complexToFraction(value.data, base, pbase); 740 } 741 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 742 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 743 } finally { 744 releaseTempTypedValue(value); 745 } 746 } 747 748 /** 749 * Return a drawable object associated with a particular resource ID. 750 * Various types of objects will be returned depending on the underlying 751 * resource -- for example, a solid color, PNG image, scalable image, etc. 752 * The Drawable API hides these implementation details. 753 * 754 * <p class="note"><strong>Note:</strong> Prior to 755 * {@link android.os.Build.VERSION_CODES#JELLY_BEAN}, this function 756 * would not correctly retrieve the final configuration density when 757 * the resource ID passed here is an alias to another Drawable resource. 758 * This means that if the density configuration of the alias resource 759 * is different than the actual resource, the density of the returned 760 * Drawable would be incorrect, resulting in bad scaling. To work 761 * around this, you can instead retrieve the Drawable through 762 * {@link TypedArray#getDrawable TypedArray.getDrawable}. Use 763 * {@link android.content.Context#obtainStyledAttributes(int[]) 764 * Context.obtainStyledAttributes} with 765 * an array containing the resource ID of interest to create the TypedArray.</p> 766 * 767 * <p class="note"><strong>Note:</strong> To obtain a themed drawable, use 768 * {@link android.content.Context#getDrawable(int) Context.getDrawable(int)} 769 * or {@link #getDrawable(int, Theme)} passing the desired theme.</p> 770 * 771 * @param id The desired resource identifier, as generated by the aapt 772 * tool. This integer encodes the package, type, and resource 773 * entry. The value 0 is an invalid identifier. 774 * @return Drawable An object that can be used to draw this resource. 775 * @throws NotFoundException Throws NotFoundException if the given ID does 776 * not exist. 777 * @see #getDrawable(int, Theme) 778 * @deprecated Use {@link #getDrawable(int, Theme)} instead. 779 */ 780 @Deprecated 781 @Nullable 782 public Drawable getDrawable(@DrawableRes int id) throws NotFoundException { 783 final Drawable d = getDrawable(id, null); 784 if (d != null && d.canApplyTheme()) { 785 Log.w(TAG, "Drawable " + getResourceName(id) + " has unresolved theme " 786 + "attributes! Consider using Resources.getDrawable(int, Theme) or " 787 + "Context.getDrawable(int).", new RuntimeException()); 788 } 789 return d; 790 } 791 792 /** 793 * Return a drawable object associated with a particular resource ID and 794 * styled for the specified theme. Various types of objects will be 795 * returned depending on the underlying resource -- for example, a solid 796 * color, PNG image, scalable image, etc. 797 * 798 * @param id The desired resource identifier, as generated by the aapt 799 * tool. This integer encodes the package, type, and resource 800 * entry. The value 0 is an invalid identifier. 801 * @param theme The theme used to style the drawable attributes, may be {@code null}. 802 * @return Drawable An object that can be used to draw this resource. 803 * @throws NotFoundException Throws NotFoundException if the given ID does 804 * not exist. 805 */ 806 @Nullable 807 public Drawable getDrawable(@DrawableRes int id, @Nullable Theme theme) 808 throws NotFoundException { 809 final TypedValue value = obtainTempTypedValue(id); 810 try { 811 return loadDrawable(value, id, theme); 812 } finally { 813 releaseTempTypedValue(value); 814 } 815 } 816 817 /** 818 * Return a drawable object associated with a particular resource ID for the 819 * given screen density in DPI. This will set the drawable's density to be 820 * the device's density multiplied by the ratio of actual drawable density 821 * to requested density. This allows the drawable to be scaled up to the 822 * correct size if needed. Various types of objects will be returned 823 * depending on the underlying resource -- for example, a solid color, PNG 824 * image, scalable image, etc. The Drawable API hides these implementation 825 * details. 826 * 827 * <p class="note"><strong>Note:</strong> To obtain a themed drawable, use 828 * {@link android.content.Context#getDrawable(int) Context.getDrawable(int)} 829 * or {@link #getDrawableForDensity(int, int, Theme)} passing the desired 830 * theme.</p> 831 * 832 * @param id The desired resource identifier, as generated by the aapt tool. 833 * This integer encodes the package, type, and resource entry. 834 * The value 0 is an invalid identifier. 835 * @param density the desired screen density indicated by the resource as 836 * found in {@link DisplayMetrics}. 837 * @return Drawable An object that can be used to draw this resource. 838 * @throws NotFoundException Throws NotFoundException if the given ID does 839 * not exist. 840 * @see #getDrawableForDensity(int, int, Theme) 841 * @deprecated Use {@link #getDrawableForDensity(int, int, Theme)} instead. 842 */ 843 @Deprecated 844 @Nullable 845 public Drawable getDrawableForDensity(@DrawableRes int id, int density) 846 throws NotFoundException { 847 return getDrawableForDensity(id, density, null); 848 } 849 850 /** 851 * Return a drawable object associated with a particular resource ID for the 852 * given screen density in DPI and styled for the specified theme. 853 * 854 * @param id The desired resource identifier, as generated by the aapt tool. 855 * This integer encodes the package, type, and resource entry. 856 * The value 0 is an invalid identifier. 857 * @param density The desired screen density indicated by the resource as 858 * found in {@link DisplayMetrics}. 859 * @param theme The theme used to style the drawable attributes, may be {@code null}. 860 * @return Drawable An object that can be used to draw this resource. 861 * @throws NotFoundException Throws NotFoundException if the given ID does 862 * not exist. 863 */ 864 @Nullable 865 public Drawable getDrawableForDensity(@DrawableRes int id, int density, @Nullable Theme theme) { 866 final TypedValue value = obtainTempTypedValue(id); 867 try { 868 getValueForDensity(id, density, value, true); 869 870 /* 871 * Pretend the requested density is actually the display density. If 872 * the drawable returned is not the requested density, then force it 873 * to be scaled later by dividing its density by the ratio of 874 * requested density to actual device density. Drawables that have 875 * undefined density or no density don't need to be handled here. 876 */ 877 if (value.density > 0 && value.density != TypedValue.DENSITY_NONE) { 878 if (value.density == density) { 879 value.density = mMetrics.densityDpi; 880 } else { 881 value.density = (value.density * mMetrics.densityDpi) / density; 882 } 883 } 884 885 return loadDrawable(value, id, theme); 886 } finally { 887 releaseTempTypedValue(value); 888 } 889 } 890 891 /** 892 * Return a movie object associated with the particular resource ID. 893 * @param id The desired resource identifier, as generated by the aapt 894 * tool. This integer encodes the package, type, and resource 895 * entry. The value 0 is an invalid identifier. 896 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 897 * 898 */ 899 public Movie getMovie(@RawRes int id) throws NotFoundException { 900 InputStream is = openRawResource(id); 901 Movie movie = Movie.decodeStream(is); 902 try { 903 is.close(); 904 } 905 catch (java.io.IOException e) { 906 // don't care, since the return value is valid 907 } 908 return movie; 909 } 910 911 /** 912 * Returns a color integer associated with a particular resource ID. If the 913 * resource holds a complex {@link ColorStateList}, then the default color 914 * from the set is returned. 915 * 916 * @param id The desired resource identifier, as generated by the aapt 917 * tool. This integer encodes the package, type, and resource 918 * entry. The value 0 is an invalid identifier. 919 * 920 * @throws NotFoundException Throws NotFoundException if the given ID does 921 * not exist. 922 * 923 * @return A single color value in the form 0xAARRGGBB. 924 * @deprecated Use {@link #getColor(int, Theme)} instead. 925 */ 926 @ColorInt 927 @Deprecated 928 public int getColor(@ColorRes int id) throws NotFoundException { 929 return getColor(id, null); 930 } 931 932 /** 933 * Returns a themed color integer associated with a particular resource ID. 934 * If the resource holds a complex {@link ColorStateList}, then the default 935 * color from the set is returned. 936 * 937 * @param id The desired resource identifier, as generated by the aapt 938 * tool. This integer encodes the package, type, and resource 939 * entry. The value 0 is an invalid identifier. 940 * @param theme The theme used to style the color attributes, may be 941 * {@code null}. 942 * 943 * @throws NotFoundException Throws NotFoundException if the given ID does 944 * not exist. 945 * 946 * @return A single color value in the form 0xAARRGGBB. 947 */ 948 @ColorInt 949 public int getColor(@ColorRes int id, @Nullable Theme theme) throws NotFoundException { 950 final TypedValue value = obtainTempTypedValue(id); 951 try { 952 if (value.type >= TypedValue.TYPE_FIRST_INT 953 && value.type <= TypedValue.TYPE_LAST_INT) { 954 return value.data; 955 } else if (value.type != TypedValue.TYPE_STRING) { 956 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 957 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 958 } 959 960 final ColorStateList csl = loadColorStateList(value, id, theme); 961 return csl.getDefaultColor(); 962 } finally { 963 releaseTempTypedValue(value); 964 } 965 } 966 967 /** 968 * Returns a color state list associated with a particular resource ID. The 969 * resource may contain either a single raw color value or a complex 970 * {@link ColorStateList} holding multiple possible colors. 971 * 972 * @param id The desired resource identifier of a {@link ColorStateList}, 973 * as generated by the aapt tool. This integer encodes the 974 * package, type, and resource entry. The value 0 is an invalid 975 * identifier. 976 * 977 * @throws NotFoundException Throws NotFoundException if the given ID does 978 * not exist. 979 * 980 * @return A ColorStateList object containing either a single solid color 981 * or multiple colors that can be selected based on a state. 982 * @deprecated Use {@link #getColorStateList(int, Theme)} instead. 983 */ 984 @Nullable 985 @Deprecated 986 public ColorStateList getColorStateList(@ColorRes int id) throws NotFoundException { 987 final ColorStateList csl = getColorStateList(id, null); 988 if (csl != null && csl.canApplyTheme()) { 989 Log.w(TAG, "ColorStateList " + getResourceName(id) + " has " 990 + "unresolved theme attributes! Consider using " 991 + "Resources.getColorStateList(int, Theme) or " 992 + "Context.getColorStateList(int).", new RuntimeException()); 993 } 994 return csl; 995 } 996 997 /** 998 * Returns a themed color state list associated with a particular resource 999 * ID. The resource may contain either a single raw color value or a 1000 * complex {@link ColorStateList} holding multiple possible colors. 1001 * 1002 * @param id The desired resource identifier of a {@link ColorStateList}, 1003 * as generated by the aapt tool. This integer encodes the 1004 * package, type, and resource entry. The value 0 is an invalid 1005 * identifier. 1006 * @param theme The theme used to style the color attributes, may be 1007 * {@code null}. 1008 * 1009 * @throws NotFoundException Throws NotFoundException if the given ID does 1010 * not exist. 1011 * 1012 * @return A themed ColorStateList object containing either a single solid 1013 * color or multiple colors that can be selected based on a state. 1014 */ 1015 @Nullable 1016 public ColorStateList getColorStateList(@ColorRes int id, @Nullable Theme theme) 1017 throws NotFoundException { 1018 final TypedValue value = obtainTempTypedValue(id); 1019 try { 1020 return loadColorStateList(value, id, theme); 1021 } finally { 1022 releaseTempTypedValue(value); 1023 } 1024 } 1025 1026 /** 1027 * Return a boolean associated with a particular resource ID. This can be 1028 * used with any integral resource value, and will return true if it is 1029 * non-zero. 1030 * 1031 * @param id The desired resource identifier, as generated by the aapt 1032 * tool. This integer encodes the package, type, and resource 1033 * entry. The value 0 is an invalid identifier. 1034 * 1035 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1036 * 1037 * @return Returns the boolean value contained in the resource. 1038 */ 1039 public boolean getBoolean(@BoolRes int id) throws NotFoundException { 1040 final TypedValue value = obtainTempTypedValue(id); 1041 try { 1042 if (value.type >= TypedValue.TYPE_FIRST_INT 1043 && value.type <= TypedValue.TYPE_LAST_INT) { 1044 return value.data != 0; 1045 } 1046 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 1047 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 1048 } finally { 1049 releaseTempTypedValue(value); 1050 } 1051 } 1052 1053 /** 1054 * Return an integer associated with a particular resource ID. 1055 * 1056 * @param id The desired resource identifier, as generated by the aapt 1057 * tool. This integer encodes the package, type, and resource 1058 * entry. The value 0 is an invalid identifier. 1059 * 1060 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1061 * 1062 * @return Returns the integer value contained in the resource. 1063 */ 1064 public int getInteger(@IntegerRes int id) throws NotFoundException { 1065 final TypedValue value = obtainTempTypedValue(id); 1066 try { 1067 if (value.type >= TypedValue.TYPE_FIRST_INT 1068 && value.type <= TypedValue.TYPE_LAST_INT) { 1069 return value.data; 1070 } 1071 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 1072 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 1073 } finally { 1074 releaseTempTypedValue(value); 1075 } 1076 } 1077 1078 /** 1079 * Retrieve a floating-point value for a particular resource ID. 1080 * 1081 * @param id The desired resource identifier, as generated by the aapt 1082 * tool. This integer encodes the package, type, and resource 1083 * entry. The value 0 is an invalid identifier. 1084 * 1085 * @return Returns the floating-point value contained in the resource. 1086 * 1087 * @throws NotFoundException Throws NotFoundException if the given ID does 1088 * not exist or is not a floating-point value. 1089 * @hide Pending API council approval. 1090 */ 1091 public float getFloat(int id) { 1092 final TypedValue value = obtainTempTypedValue(id); 1093 try { 1094 if (value.type == TypedValue.TYPE_FLOAT) { 1095 return value.getFloat(); 1096 } 1097 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 1098 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 1099 } finally { 1100 releaseTempTypedValue(value); 1101 } 1102 } 1103 1104 /** 1105 * Return an XmlResourceParser through which you can read a view layout 1106 * description for the given resource ID. This parser has limited 1107 * functionality -- in particular, you can't change its input, and only 1108 * the high-level events are available. 1109 * 1110 * <p>This function is really a simple wrapper for calling 1111 * {@link #getXml} with a layout resource. 1112 * 1113 * @param id The desired resource identifier, as generated by the aapt 1114 * tool. This integer encodes the package, type, and resource 1115 * entry. The value 0 is an invalid identifier. 1116 * 1117 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1118 * 1119 * @return A new parser object through which you can read 1120 * the XML data. 1121 * 1122 * @see #getXml 1123 */ 1124 public XmlResourceParser getLayout(@LayoutRes int id) throws NotFoundException { 1125 return loadXmlResourceParser(id, "layout"); 1126 } 1127 1128 /** 1129 * Return an XmlResourceParser through which you can read an animation 1130 * description for the given resource ID. This parser has limited 1131 * functionality -- in particular, you can't change its input, and only 1132 * the high-level events are available. 1133 * 1134 * <p>This function is really a simple wrapper for calling 1135 * {@link #getXml} with an animation resource. 1136 * 1137 * @param id The desired resource identifier, as generated by the aapt 1138 * tool. This integer encodes the package, type, and resource 1139 * entry. The value 0 is an invalid identifier. 1140 * 1141 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1142 * 1143 * @return A new parser object through which you can read 1144 * the XML data. 1145 * 1146 * @see #getXml 1147 */ 1148 public XmlResourceParser getAnimation(@AnimRes int id) throws NotFoundException { 1149 return loadXmlResourceParser(id, "anim"); 1150 } 1151 1152 /** 1153 * Return an XmlResourceParser through which you can read a generic XML 1154 * resource for the given resource ID. 1155 * 1156 * <p>The XmlPullParser implementation returned here has some limited 1157 * functionality. In particular, you can't change its input, and only 1158 * high-level parsing events are available (since the document was 1159 * pre-parsed for you at build time, which involved merging text and 1160 * stripping comments). 1161 * 1162 * @param id The desired resource identifier, as generated by the aapt 1163 * tool. This integer encodes the package, type, and resource 1164 * entry. The value 0 is an invalid identifier. 1165 * 1166 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1167 * 1168 * @return A new parser object through which you can read 1169 * the XML data. 1170 * 1171 * @see android.util.AttributeSet 1172 */ 1173 public XmlResourceParser getXml(@XmlRes int id) throws NotFoundException { 1174 return loadXmlResourceParser(id, "xml"); 1175 } 1176 1177 /** 1178 * Open a data stream for reading a raw resource. This can only be used 1179 * with resources whose value is the name of an asset files -- that is, it can be 1180 * used to open drawable, sound, and raw resources; it will fail on string 1181 * and color resources. 1182 * 1183 * @param id The resource identifier to open, as generated by the appt 1184 * tool. 1185 * 1186 * @return InputStream Access to the resource data. 1187 * 1188 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1189 * 1190 */ 1191 public InputStream openRawResource(@RawRes int id) throws NotFoundException { 1192 final TypedValue value = obtainTempTypedValue(); 1193 try { 1194 return openRawResource(id, value); 1195 } finally { 1196 releaseTempTypedValue(value); 1197 } 1198 } 1199 1200 /** 1201 * Returns a TypedValue populated with data for the specified resource ID 1202 * that's suitable for temporary use. The obtained TypedValue should be 1203 * released using {@link #releaseTempTypedValue(TypedValue)}. 1204 * 1205 * @param id the resource ID for which data should be obtained 1206 * @return a populated typed value suitable for temporary use 1207 */ 1208 private TypedValue obtainTempTypedValue(@AnyRes int id) { 1209 final TypedValue value = obtainTempTypedValue(); 1210 getValue(id, value, true); 1211 return value; 1212 } 1213 1214 /** 1215 * Returns a TypedValue suitable for temporary use. The obtained TypedValue 1216 * should be released using {@link #releaseTempTypedValue(TypedValue)}. 1217 * 1218 * @return a typed value suitable for temporary use 1219 */ 1220 private TypedValue obtainTempTypedValue() { 1221 TypedValue tmpValue = null; 1222 synchronized (mTmpValueLock) { 1223 if (mTmpValue != null) { 1224 tmpValue = mTmpValue; 1225 mTmpValue = null; 1226 } 1227 } 1228 if (tmpValue == null) { 1229 return new TypedValue(); 1230 } 1231 return tmpValue; 1232 } 1233 1234 /** 1235 * Returns a TypedValue to the pool. After calling this method, the 1236 * specified TypedValue should no longer be accessed. 1237 * 1238 * @param value the typed value to return to the pool 1239 */ 1240 private void releaseTempTypedValue(TypedValue value) { 1241 synchronized (mTmpValueLock) { 1242 if (mTmpValue == null) { 1243 mTmpValue = value; 1244 } 1245 } 1246 } 1247 1248 /** 1249 * Open a data stream for reading a raw resource. This can only be used 1250 * with resources whose value is the name of an asset file -- that is, it can be 1251 * used to open drawable, sound, and raw resources; it will fail on string 1252 * and color resources. 1253 * 1254 * @param id The resource identifier to open, as generated by the appt tool. 1255 * @param value The TypedValue object to hold the resource information. 1256 * 1257 * @return InputStream Access to the resource data. 1258 * 1259 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1260 */ 1261 public InputStream openRawResource(@RawRes int id, TypedValue value) 1262 throws NotFoundException { 1263 getValue(id, value, true); 1264 1265 try { 1266 return mAssets.openNonAsset(value.assetCookie, value.string.toString(), 1267 AssetManager.ACCESS_STREAMING); 1268 } catch (Exception e) { 1269 NotFoundException rnf = new NotFoundException("File " + value.string.toString() + 1270 " from drawable resource ID #0x" + Integer.toHexString(id)); 1271 rnf.initCause(e); 1272 throw rnf; 1273 } 1274 } 1275 1276 /** 1277 * Open a file descriptor for reading a raw resource. This can only be used 1278 * with resources whose value is the name of an asset files -- that is, it can be 1279 * used to open drawable, sound, and raw resources; it will fail on string 1280 * and color resources. 1281 * 1282 * <p>This function only works for resources that are stored in the package 1283 * as uncompressed data, which typically includes things like mp3 files 1284 * and png images. 1285 * 1286 * @param id The resource identifier to open, as generated by the appt 1287 * tool. 1288 * 1289 * @return AssetFileDescriptor A new file descriptor you can use to read 1290 * the resource. This includes the file descriptor itself, as well as the 1291 * offset and length of data where the resource appears in the file. A 1292 * null is returned if the file exists but is compressed. 1293 * 1294 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1295 * 1296 */ 1297 public AssetFileDescriptor openRawResourceFd(@RawRes int id) 1298 throws NotFoundException { 1299 final TypedValue value = obtainTempTypedValue(id); 1300 try { 1301 return mAssets.openNonAssetFd(value.assetCookie, value.string.toString()); 1302 } catch (Exception e) { 1303 throw new NotFoundException("File " + value.string.toString() + " from drawable " 1304 + "resource ID #0x" + Integer.toHexString(id), e); 1305 } finally { 1306 releaseTempTypedValue(value); 1307 } 1308 } 1309 1310 /** 1311 * Return the raw data associated with a particular resource ID. 1312 * 1313 * @param id The desired resource identifier, as generated by the aapt 1314 * tool. This integer encodes the package, type, and resource 1315 * entry. The value 0 is an invalid identifier. 1316 * @param outValue Object in which to place the resource data. 1317 * @param resolveRefs If true, a resource that is a reference to another 1318 * resource will be followed so that you receive the 1319 * actual final resource data. If false, the TypedValue 1320 * will be filled in with the reference itself. 1321 * 1322 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1323 * 1324 */ 1325 public void getValue(@AnyRes int id, TypedValue outValue, boolean resolveRefs) 1326 throws NotFoundException { 1327 boolean found = mAssets.getResourceValue(id, 0, outValue, resolveRefs); 1328 if (found) { 1329 return; 1330 } 1331 throw new NotFoundException("Resource ID #0x" 1332 + Integer.toHexString(id)); 1333 } 1334 1335 /** 1336 * Get the raw value associated with a resource with associated density. 1337 * 1338 * @param id resource identifier 1339 * @param density density in DPI 1340 * @param resolveRefs If true, a resource that is a reference to another 1341 * resource will be followed so that you receive the actual final 1342 * resource data. If false, the TypedValue will be filled in with 1343 * the reference itself. 1344 * @throws NotFoundException Throws NotFoundException if the given ID does 1345 * not exist. 1346 * @see #getValue(String, TypedValue, boolean) 1347 */ 1348 public void getValueForDensity(@AnyRes int id, int density, TypedValue outValue, 1349 boolean resolveRefs) throws NotFoundException { 1350 boolean found = mAssets.getResourceValue(id, density, outValue, resolveRefs); 1351 if (found) { 1352 return; 1353 } 1354 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id)); 1355 } 1356 1357 /** 1358 * Return the raw data associated with a particular resource ID. 1359 * See getIdentifier() for information on how names are mapped to resource 1360 * IDs, and getString(int) for information on how string resources are 1361 * retrieved. 1362 * 1363 * <p>Note: use of this function is discouraged. It is much more 1364 * efficient to retrieve resources by identifier than by name. 1365 * 1366 * @param name The name of the desired resource. This is passed to 1367 * getIdentifier() with a default type of "string". 1368 * @param outValue Object in which to place the resource data. 1369 * @param resolveRefs If true, a resource that is a reference to another 1370 * resource will be followed so that you receive the 1371 * actual final resource data. If false, the TypedValue 1372 * will be filled in with the reference itself. 1373 * 1374 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1375 * 1376 */ 1377 public void getValue(String name, TypedValue outValue, boolean resolveRefs) 1378 throws NotFoundException { 1379 int id = getIdentifier(name, "string", null); 1380 if (id != 0) { 1381 getValue(id, outValue, resolveRefs); 1382 return; 1383 } 1384 throw new NotFoundException("String resource name " + name); 1385 } 1386 1387 /** 1388 * This class holds the current attribute values for a particular theme. 1389 * In other words, a Theme is a set of values for resource attributes; 1390 * these are used in conjunction with {@link TypedArray} 1391 * to resolve the final value for an attribute. 1392 * 1393 * <p>The Theme's attributes come into play in two ways: (1) a styled 1394 * attribute can explicit reference a value in the theme through the 1395 * "?themeAttribute" syntax; (2) if no value has been defined for a 1396 * particular styled attribute, as a last resort we will try to find that 1397 * attribute's value in the Theme. 1398 * 1399 * <p>You will normally use the {@link #obtainStyledAttributes} APIs to 1400 * retrieve XML attributes with style and theme information applied. 1401 */ 1402 public final class Theme { 1403 /** 1404 * Place new attribute values into the theme. The style resource 1405 * specified by <var>resid</var> will be retrieved from this Theme's 1406 * resources, its values placed into the Theme object. 1407 * 1408 * <p>The semantics of this function depends on the <var>force</var> 1409 * argument: If false, only values that are not already defined in 1410 * the theme will be copied from the system resource; otherwise, if 1411 * any of the style's attributes are already defined in the theme, the 1412 * current values in the theme will be overwritten. 1413 * 1414 * @param resId The resource ID of a style resource from which to 1415 * obtain attribute values. 1416 * @param force If true, values in the style resource will always be 1417 * used in the theme; otherwise, they will only be used 1418 * if not already defined in the theme. 1419 */ 1420 public void applyStyle(int resId, boolean force) { 1421 synchronized (mKey) { 1422 AssetManager.applyThemeStyle(mTheme, resId, force); 1423 1424 mThemeResId = resId; 1425 mKey.append(resId, force); 1426 } 1427 } 1428 1429 /** 1430 * Set this theme to hold the same contents as the theme 1431 * <var>other</var>. If both of these themes are from the same 1432 * Resources object, they will be identical after this function 1433 * returns. If they are from different Resources, only the resources 1434 * they have in common will be set in this theme. 1435 * 1436 * @param other The existing Theme to copy from. 1437 */ 1438 public void setTo(Theme other) { 1439 synchronized (mKey) { 1440 synchronized (other.mKey) { 1441 AssetManager.copyTheme(mTheme, other.mTheme); 1442 1443 mThemeResId = other.mThemeResId; 1444 mKey.setTo(other.getKey()); 1445 } 1446 } 1447 } 1448 1449 /** 1450 * Return a TypedArray holding the values defined by 1451 * <var>Theme</var> which are listed in <var>attrs</var>. 1452 * 1453 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1454 * with the array. 1455 * 1456 * @param attrs The desired attributes. 1457 * 1458 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1459 * 1460 * @return Returns a TypedArray holding an array of the attribute values. 1461 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1462 * when done with it. 1463 * 1464 * @see Resources#obtainAttributes 1465 * @see #obtainStyledAttributes(int, int[]) 1466 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1467 */ 1468 public TypedArray obtainStyledAttributes(@StyleableRes int[] attrs) { 1469 synchronized (mKey) { 1470 final int len = attrs.length; 1471 final TypedArray array = TypedArray.obtain(Resources.this, len); 1472 array.mTheme = this; 1473 AssetManager.applyStyle(mTheme, 0, 0, 0, attrs, array.mData, array.mIndices); 1474 return array; 1475 } 1476 } 1477 1478 /** 1479 * Return a TypedArray holding the values defined by the style 1480 * resource <var>resid</var> which are listed in <var>attrs</var>. 1481 * 1482 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1483 * with the array. 1484 * 1485 * @param resId The desired style resource. 1486 * @param attrs The desired attributes in the style. 1487 * 1488 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1489 * 1490 * @return Returns a TypedArray holding an array of the attribute values. 1491 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1492 * when done with it. 1493 * 1494 * @see Resources#obtainAttributes 1495 * @see #obtainStyledAttributes(int[]) 1496 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1497 */ 1498 public TypedArray obtainStyledAttributes(@StyleRes int resId, @StyleableRes int[] attrs) 1499 throws NotFoundException { 1500 synchronized (mKey) { 1501 final int len = attrs.length; 1502 final TypedArray array = TypedArray.obtain(Resources.this, len); 1503 array.mTheme = this; 1504 AssetManager.applyStyle(mTheme, 0, resId, 0, attrs, array.mData, array.mIndices); 1505 return array; 1506 } 1507 } 1508 1509 /** 1510 * Return a TypedArray holding the attribute values in 1511 * <var>set</var> 1512 * that are listed in <var>attrs</var>. In addition, if the given 1513 * AttributeSet specifies a style class (through the "style" attribute), 1514 * that style will be applied on top of the base attributes it defines. 1515 * 1516 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1517 * with the array. 1518 * 1519 * <p>When determining the final value of a particular attribute, there 1520 * are four inputs that come into play:</p> 1521 * 1522 * <ol> 1523 * <li> Any attribute values in the given AttributeSet. 1524 * <li> The style resource specified in the AttributeSet (named 1525 * "style"). 1526 * <li> The default style specified by <var>defStyleAttr</var> and 1527 * <var>defStyleRes</var> 1528 * <li> The base values in this theme. 1529 * </ol> 1530 * 1531 * <p>Each of these inputs is considered in-order, with the first listed 1532 * taking precedence over the following ones. In other words, if in the 1533 * AttributeSet you have supplied <code><Button 1534 * textColor="#ff000000"></code>, then the button's text will 1535 * <em>always</em> be black, regardless of what is specified in any of 1536 * the styles. 1537 * 1538 * @param set The base set of attribute values. May be null. 1539 * @param attrs The desired attributes to be retrieved. 1540 * @param defStyleAttr An attribute in the current theme that contains a 1541 * reference to a style resource that supplies 1542 * defaults values for the TypedArray. Can be 1543 * 0 to not look for defaults. 1544 * @param defStyleRes A resource identifier of a style resource that 1545 * supplies default values for the TypedArray, 1546 * used only if defStyleAttr is 0 or can not be found 1547 * in the theme. Can be 0 to not look for defaults. 1548 * 1549 * @return Returns a TypedArray holding an array of the attribute values. 1550 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1551 * when done with it. 1552 * 1553 * @see Resources#obtainAttributes 1554 * @see #obtainStyledAttributes(int[]) 1555 * @see #obtainStyledAttributes(int, int[]) 1556 */ 1557 public TypedArray obtainStyledAttributes(AttributeSet set, 1558 @StyleableRes int[] attrs, @AttrRes int defStyleAttr, @StyleRes int defStyleRes) { 1559 synchronized (mKey) { 1560 final int len = attrs.length; 1561 final TypedArray array = TypedArray.obtain(Resources.this, len); 1562 1563 // XXX note that for now we only work with compiled XML files. 1564 // To support generic XML files we will need to manually parse 1565 // out the attributes from the XML file (applying type information 1566 // contained in the resources and such). 1567 final XmlBlock.Parser parser = (XmlBlock.Parser) set; 1568 AssetManager.applyStyle(mTheme, defStyleAttr, defStyleRes, 1569 parser != null ? parser.mParseState : 0, 1570 attrs, array.mData, array.mIndices); 1571 array.mTheme = this; 1572 array.mXml = parser; 1573 1574 return array; 1575 } 1576 } 1577 1578 /** 1579 * Retrieve the values for a set of attributes in the Theme. The 1580 * contents of the typed array are ultimately filled in by 1581 * {@link Resources#getValue}. 1582 * 1583 * @param values The base set of attribute values, must be equal in 1584 * length to {@code attrs}. All values must be of type 1585 * {@link TypedValue#TYPE_ATTRIBUTE}. 1586 * @param attrs The desired attributes to be retrieved. 1587 * @return Returns a TypedArray holding an array of the attribute 1588 * values. Be sure to call {@link TypedArray#recycle()} 1589 * when done with it. 1590 * @hide 1591 */ 1592 @NonNull 1593 public TypedArray resolveAttributes(@NonNull int[] values, @NonNull int[] attrs) { 1594 synchronized (mKey) { 1595 final int len = attrs.length; 1596 if (values == null || len != values.length) { 1597 throw new IllegalArgumentException( 1598 "Base attribute values must the same length as attrs"); 1599 } 1600 1601 final TypedArray array = TypedArray.obtain(Resources.this, len); 1602 AssetManager.resolveAttrs(mTheme, 0, 0, values, attrs, array.mData, array.mIndices); 1603 array.mTheme = this; 1604 array.mXml = null; 1605 1606 return array; 1607 } 1608 } 1609 1610 /** 1611 * Retrieve the value of an attribute in the Theme. The contents of 1612 * <var>outValue</var> are ultimately filled in by 1613 * {@link Resources#getValue}. 1614 * 1615 * @param resid The resource identifier of the desired theme 1616 * attribute. 1617 * @param outValue Filled in with the ultimate resource value supplied 1618 * by the attribute. 1619 * @param resolveRefs If true, resource references will be walked; if 1620 * false, <var>outValue</var> may be a 1621 * TYPE_REFERENCE. In either case, it will never 1622 * be a TYPE_ATTRIBUTE. 1623 * 1624 * @return boolean Returns true if the attribute was found and 1625 * <var>outValue</var> is valid, else false. 1626 */ 1627 public boolean resolveAttribute(int resid, TypedValue outValue, boolean resolveRefs) { 1628 synchronized (mKey) { 1629 return mAssets.getThemeValue(mTheme, resid, outValue, resolveRefs); 1630 } 1631 } 1632 1633 /** 1634 * Gets all of the attribute ids associated with this {@link Theme}. For debugging only. 1635 * 1636 * @return The int array containing attribute ids associated with this {@link Theme}. 1637 * @hide 1638 */ 1639 public int[] getAllAttributes() { 1640 return mAssets.getStyleAttributes(getAppliedStyleResId()); 1641 } 1642 1643 /** 1644 * Returns the resources to which this theme belongs. 1645 * 1646 * @return Resources to which this theme belongs. 1647 */ 1648 public Resources getResources() { 1649 return Resources.this; 1650 } 1651 1652 /** 1653 * Return a drawable object associated with a particular resource ID 1654 * and styled for the Theme. 1655 * 1656 * @param id The desired resource identifier, as generated by the aapt 1657 * tool. This integer encodes the package, type, and resource 1658 * entry. The value 0 is an invalid identifier. 1659 * @return Drawable An object that can be used to draw this resource. 1660 * @throws NotFoundException Throws NotFoundException if the given ID 1661 * does not exist. 1662 */ 1663 public Drawable getDrawable(@DrawableRes int id) throws NotFoundException { 1664 return Resources.this.getDrawable(id, this); 1665 } 1666 1667 /** 1668 * Returns a bit mask of configuration changes that will impact this 1669 * theme (and thus require completely reloading it). 1670 * 1671 * @return a bit mask of configuration changes, as defined by 1672 * {@link ActivityInfo} 1673 * @see ActivityInfo 1674 */ 1675 public int getChangingConfigurations() { 1676 synchronized (mKey) { 1677 final int nativeChangingConfig = 1678 AssetManager.getThemeChangingConfigurations(mTheme); 1679 return ActivityInfo.activityInfoConfigNativeToJava(nativeChangingConfig); 1680 } 1681 } 1682 1683 /** 1684 * Print contents of this theme out to the log. For debugging only. 1685 * 1686 * @param priority The log priority to use. 1687 * @param tag The log tag to use. 1688 * @param prefix Text to prefix each line printed. 1689 */ 1690 public void dump(int priority, String tag, String prefix) { 1691 synchronized (mKey) { 1692 AssetManager.dumpTheme(mTheme, priority, tag, prefix); 1693 } 1694 } 1695 1696 @Override 1697 protected void finalize() throws Throwable { 1698 super.finalize(); 1699 mAssets.releaseTheme(mTheme); 1700 } 1701 1702 /*package*/ Theme() { 1703 mAssets = Resources.this.mAssets; 1704 mTheme = mAssets.createTheme(); 1705 } 1706 1707 /** Unique key for the series of styles applied to this theme. */ 1708 private final ThemeKey mKey = new ThemeKey(); 1709 1710 @SuppressWarnings("hiding") 1711 private final AssetManager mAssets; 1712 private final long mTheme; 1713 1714 /** Resource identifier for the theme. */ 1715 private int mThemeResId = 0; 1716 1717 // Needed by layoutlib. 1718 /*package*/ long getNativeTheme() { 1719 return mTheme; 1720 } 1721 1722 /*package*/ int getAppliedStyleResId() { 1723 return mThemeResId; 1724 } 1725 1726 /*package*/ ThemeKey getKey() { 1727 return mKey; 1728 } 1729 1730 private String getResourceNameFromHexString(String hexString) { 1731 return getResourceName(Integer.parseInt(hexString, 16)); 1732 } 1733 1734 /** 1735 * Parses {@link #mKey} and returns a String array that holds pairs of 1736 * adjacent Theme data: resource name followed by whether or not it was 1737 * forced, as specified by {@link #applyStyle(int, boolean)}. 1738 * 1739 * @hide 1740 */ 1741 @ViewDebug.ExportedProperty(category = "theme", hasAdjacentMapping = true) 1742 public String[] getTheme() { 1743 synchronized (mKey) { 1744 final int N = mKey.mCount; 1745 final String[] themes = new String[N * 2]; 1746 for (int i = 0, j = N - 1; i < themes.length; i += 2, --j) { 1747 final int resId = mKey.mResId[j]; 1748 final boolean forced = mKey.mForce[j]; 1749 try { 1750 themes[i] = getResourceName(resId); 1751 } catch (NotFoundException e) { 1752 themes[i] = Integer.toHexString(i); 1753 } 1754 themes[i + 1] = forced ? "forced" : "not forced"; 1755 } 1756 return themes; 1757 } 1758 } 1759 1760 /** @hide */ 1761 public void encode(@NonNull ViewHierarchyEncoder encoder) { 1762 encoder.beginObject(this); 1763 final String[] properties = getTheme(); 1764 for (int i = 0; i < properties.length; i += 2) { 1765 encoder.addProperty(properties[i], properties[i+1]); 1766 } 1767 encoder.endObject(); 1768 } 1769 1770 /** 1771 * Rebases the theme against the parent Resource object's current 1772 * configuration by re-applying the styles passed to 1773 * {@link #applyStyle(int, boolean)}. 1774 * 1775 * @hide 1776 */ 1777 public void rebase() { 1778 synchronized (mKey) { 1779 AssetManager.clearTheme(mTheme); 1780 1781 // Reapply the same styles in the same order. 1782 for (int i = 0; i < mKey.mCount; i++) { 1783 final int resId = mKey.mResId[i]; 1784 final boolean force = mKey.mForce[i]; 1785 AssetManager.applyThemeStyle(mTheme, resId, force); 1786 } 1787 } 1788 } 1789 } 1790 1791 static class ThemeKey implements Cloneable { 1792 int[] mResId; 1793 boolean[] mForce; 1794 int mCount; 1795 1796 private int mHashCode = 0; 1797 1798 public void append(int resId, boolean force) { 1799 if (mResId == null) { 1800 mResId = new int[4]; 1801 } 1802 1803 if (mForce == null) { 1804 mForce = new boolean[4]; 1805 } 1806 1807 mResId = GrowingArrayUtils.append(mResId, mCount, resId); 1808 mForce = GrowingArrayUtils.append(mForce, mCount, force); 1809 mCount++; 1810 1811 mHashCode = 31 * (31 * mHashCode + resId) + (force ? 1 : 0); 1812 } 1813 1814 /** 1815 * Sets up this key as a deep copy of another key. 1816 * 1817 * @param other the key to deep copy into this key 1818 */ 1819 public void setTo(ThemeKey other) { 1820 mResId = other.mResId == null ? null : other.mResId.clone(); 1821 mForce = other.mForce == null ? null : other.mForce.clone(); 1822 mCount = other.mCount; 1823 } 1824 1825 @Override 1826 public int hashCode() { 1827 return mHashCode; 1828 } 1829 1830 @Override 1831 public boolean equals(Object o) { 1832 if (this == o) { 1833 return true; 1834 } 1835 1836 if (o == null || getClass() != o.getClass() || hashCode() != o.hashCode()) { 1837 return false; 1838 } 1839 1840 final ThemeKey t = (ThemeKey) o; 1841 if (mCount != t.mCount) { 1842 return false; 1843 } 1844 1845 final int N = mCount; 1846 for (int i = 0; i < N; i++) { 1847 if (mResId[i] != t.mResId[i] || mForce[i] != t.mForce[i]) { 1848 return false; 1849 } 1850 } 1851 1852 return true; 1853 } 1854 1855 /** 1856 * @return a shallow copy of this key 1857 */ 1858 @Override 1859 public ThemeKey clone() { 1860 final ThemeKey other = new ThemeKey(); 1861 other.mResId = mResId; 1862 other.mForce = mForce; 1863 other.mCount = mCount; 1864 other.mHashCode = mHashCode; 1865 return other; 1866 } 1867 } 1868 1869 /** 1870 * Generate a new Theme object for this set of Resources. It initially 1871 * starts out empty. 1872 * 1873 * @return Theme The newly created Theme container. 1874 */ 1875 public final Theme newTheme() { 1876 return new Theme(); 1877 } 1878 1879 /** 1880 * Retrieve a set of basic attribute values from an AttributeSet, not 1881 * performing styling of them using a theme and/or style resources. 1882 * 1883 * @param set The current attribute values to retrieve. 1884 * @param attrs The specific attributes to be retrieved. 1885 * @return Returns a TypedArray holding an array of the attribute values. 1886 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1887 * when done with it. 1888 * 1889 * @see Theme#obtainStyledAttributes(AttributeSet, int[], int, int) 1890 */ 1891 public TypedArray obtainAttributes(AttributeSet set, int[] attrs) { 1892 int len = attrs.length; 1893 TypedArray array = TypedArray.obtain(this, len); 1894 1895 // XXX note that for now we only work with compiled XML files. 1896 // To support generic XML files we will need to manually parse 1897 // out the attributes from the XML file (applying type information 1898 // contained in the resources and such). 1899 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1900 mAssets.retrieveAttributes(parser.mParseState, attrs, 1901 array.mData, array.mIndices); 1902 1903 array.mXml = parser; 1904 1905 return array; 1906 } 1907 1908 /** 1909 * Store the newly updated configuration. 1910 */ 1911 public void updateConfiguration(Configuration config, 1912 DisplayMetrics metrics) { 1913 updateConfiguration(config, metrics, null); 1914 } 1915 1916 /** 1917 * @hide 1918 */ 1919 public void updateConfiguration(Configuration config, 1920 DisplayMetrics metrics, CompatibilityInfo compat) { 1921 synchronized (mAccessLock) { 1922 if (false) { 1923 Slog.i(TAG, "**** Updating config of " + this + ": old config is " 1924 + mConfiguration + " old compat is " + mCompatibilityInfo); 1925 Slog.i(TAG, "**** Updating config of " + this + ": new config is " 1926 + config + " new compat is " + compat); 1927 } 1928 if (compat != null) { 1929 mCompatibilityInfo = compat; 1930 } 1931 if (metrics != null) { 1932 mMetrics.setTo(metrics); 1933 } 1934 // NOTE: We should re-arrange this code to create a Display 1935 // with the CompatibilityInfo that is used everywhere we deal 1936 // with the display in relation to this app, rather than 1937 // doing the conversion here. This impl should be okay because 1938 // we make sure to return a compatible display in the places 1939 // where there are public APIs to retrieve the display... but 1940 // it would be cleaner and more maintainble to just be 1941 // consistently dealing with a compatible display everywhere in 1942 // the framework. 1943 mCompatibilityInfo.applyToDisplayMetrics(mMetrics); 1944 1945 final int configChanges = calcConfigChanges(config); 1946 1947 LocaleList locales = mConfiguration.getLocales(); 1948 final boolean setLocalesToDefault = locales.isEmpty(); 1949 if (setLocalesToDefault) { 1950 locales = LocaleList.getDefault(); 1951 mConfiguration.setLocales(locales); 1952 } 1953 if (mConfiguration.densityDpi != Configuration.DENSITY_DPI_UNDEFINED) { 1954 mMetrics.densityDpi = mConfiguration.densityDpi; 1955 mMetrics.density = mConfiguration.densityDpi * DisplayMetrics.DENSITY_DEFAULT_SCALE; 1956 } 1957 mMetrics.scaledDensity = mMetrics.density * mConfiguration.fontScale; 1958 1959 final int width, height; 1960 if (mMetrics.widthPixels >= mMetrics.heightPixels) { 1961 width = mMetrics.widthPixels; 1962 height = mMetrics.heightPixels; 1963 } else { 1964 //noinspection SuspiciousNameCombination 1965 width = mMetrics.heightPixels; 1966 //noinspection SuspiciousNameCombination 1967 height = mMetrics.widthPixels; 1968 } 1969 1970 final int keyboardHidden; 1971 if (mConfiguration.keyboardHidden == Configuration.KEYBOARDHIDDEN_NO 1972 && mConfiguration.hardKeyboardHidden == Configuration.HARDKEYBOARDHIDDEN_YES) { 1973 keyboardHidden = Configuration.KEYBOARDHIDDEN_SOFT; 1974 } else { 1975 keyboardHidden = mConfiguration.keyboardHidden; 1976 } 1977 1978 if (setLocalesToDefault || mResolvedLocale == null 1979 || (configChanges & Configuration.NATIVE_CONFIG_LOCALE) != 0) { 1980 mResolvedLocale = locales.getFirstMatch(mAssets.getLocales()); 1981 } 1982 mAssets.setConfiguration(mConfiguration.mcc, mConfiguration.mnc, 1983 adjustLanguageTag(mResolvedLocale.toLanguageTag()), 1984 mConfiguration.orientation, 1985 mConfiguration.touchscreen, 1986 mConfiguration.densityDpi, mConfiguration.keyboard, 1987 keyboardHidden, mConfiguration.navigation, width, height, 1988 mConfiguration.smallestScreenWidthDp, 1989 mConfiguration.screenWidthDp, mConfiguration.screenHeightDp, 1990 mConfiguration.screenLayout, mConfiguration.uiMode, 1991 Build.VERSION.RESOURCES_SDK_INT); 1992 1993 if (DEBUG_CONFIG) { 1994 Slog.i(TAG, "**** Updating config of " + this + ": final config is " 1995 + mConfiguration + " final compat is " + mCompatibilityInfo); 1996 } 1997 1998 mDrawableCache.onConfigurationChange(configChanges); 1999 mColorDrawableCache.onConfigurationChange(configChanges); 2000 mColorStateListCache.onConfigurationChange(configChanges); 2001 mAnimatorCache.onConfigurationChange(configChanges); 2002 mStateListAnimatorCache.onConfigurationChange(configChanges); 2003 2004 flushLayoutCache(); 2005 } 2006 synchronized (sSync) { 2007 if (mPluralRule != null) { 2008 mPluralRule = PluralRules.forLocale(mResolvedLocale); 2009 } 2010 } 2011 } 2012 2013 /** 2014 * Called by ConfigurationBoundResourceCacheTest via reflection. 2015 */ 2016 private int calcConfigChanges(Configuration config) { 2017 int configChanges = 0xfffffff; 2018 if (config != null) { 2019 mTmpConfig.setTo(config); 2020 int density = config.densityDpi; 2021 if (density == Configuration.DENSITY_DPI_UNDEFINED) { 2022 density = mMetrics.noncompatDensityDpi; 2023 } 2024 2025 mCompatibilityInfo.applyToConfiguration(density, mTmpConfig); 2026 2027 if (mTmpConfig.getLocales().isEmpty()) { 2028 mTmpConfig.setLocales(LocaleList.getDefault()); 2029 } 2030 configChanges = mConfiguration.updateFrom(mTmpConfig); 2031 configChanges = ActivityInfo.activityInfoConfigToNative(configChanges); 2032 } 2033 return configChanges; 2034 } 2035 2036 /** 2037 * {@code Locale.toLanguageTag} will transform the obsolete (and deprecated) 2038 * language codes "in", "ji" and "iw" to "id", "yi" and "he" respectively. 2039 * 2040 * All released versions of android prior to "L" used the deprecated language 2041 * tags, so we will need to support them for backwards compatibility. 2042 * 2043 * Note that this conversion needs to take place *after* the call to 2044 * {@code toLanguageTag} because that will convert all the deprecated codes to 2045 * the new ones, even if they're set manually. 2046 */ 2047 private static String adjustLanguageTag(String languageTag) { 2048 final int separator = languageTag.indexOf('-'); 2049 final String language; 2050 final String remainder; 2051 2052 if (separator == -1) { 2053 language = languageTag; 2054 remainder = ""; 2055 } else { 2056 language = languageTag.substring(0, separator); 2057 remainder = languageTag.substring(separator); 2058 } 2059 2060 return Locale.adjustLanguageCode(language) + remainder; 2061 } 2062 2063 /** 2064 * Update the system resources configuration if they have previously 2065 * been initialized. 2066 * 2067 * @hide 2068 */ 2069 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics, 2070 CompatibilityInfo compat) { 2071 if (mSystem != null) { 2072 mSystem.updateConfiguration(config, metrics, compat); 2073 //Log.i(TAG, "Updated system resources " + mSystem 2074 // + ": " + mSystem.getConfiguration()); 2075 } 2076 } 2077 2078 /** 2079 * Return the current display metrics that are in effect for this resource 2080 * object. The returned object should be treated as read-only. 2081 * 2082 * @return The resource's current display metrics. 2083 */ 2084 public DisplayMetrics getDisplayMetrics() { 2085 if (DEBUG_CONFIG) Slog.v(TAG, "Returning DisplayMetrics: " + mMetrics.widthPixels 2086 + "x" + mMetrics.heightPixels + " " + mMetrics.density); 2087 return mMetrics; 2088 } 2089 2090 /** 2091 * Return the current configuration that is in effect for this resource 2092 * object. The returned object should be treated as read-only. 2093 * 2094 * @return The resource's current configuration. 2095 */ 2096 public Configuration getConfiguration() { 2097 return mConfiguration; 2098 } 2099 2100 /** @hide */ 2101 public Configuration[] getSizeConfigurations() { 2102 return mAssets.getSizeConfigurations(); 2103 }; 2104 2105 /** 2106 * Return the compatibility mode information for the application. 2107 * The returned object should be treated as read-only. 2108 * 2109 * @return compatibility info. 2110 * @hide 2111 */ 2112 public CompatibilityInfo getCompatibilityInfo() { 2113 return mCompatibilityInfo; 2114 } 2115 2116 /** 2117 * This is just for testing. 2118 * @hide 2119 */ 2120 public void setCompatibilityInfo(CompatibilityInfo ci) { 2121 if (ci != null) { 2122 mCompatibilityInfo = ci; 2123 updateConfiguration(mConfiguration, mMetrics); 2124 } 2125 } 2126 2127 /** 2128 * Return a resource identifier for the given resource name. A fully 2129 * qualified resource name is of the form "package:type/entry". The first 2130 * two components (package and type) are optional if defType and 2131 * defPackage, respectively, are specified here. 2132 * 2133 * <p>Note: use of this function is discouraged. It is much more 2134 * efficient to retrieve resources by identifier than by name. 2135 * 2136 * @param name The name of the desired resource. 2137 * @param defType Optional default resource type to find, if "type/" is 2138 * not included in the name. Can be null to require an 2139 * explicit type. 2140 * @param defPackage Optional default package to find, if "package:" is 2141 * not included in the name. Can be null to require an 2142 * explicit package. 2143 * 2144 * @return int The associated resource identifier. Returns 0 if no such 2145 * resource was found. (0 is not a valid resource ID.) 2146 */ 2147 public int getIdentifier(String name, String defType, String defPackage) { 2148 if (name == null) { 2149 throw new NullPointerException("name is null"); 2150 } 2151 try { 2152 return Integer.parseInt(name); 2153 } catch (Exception e) { 2154 // Ignore 2155 } 2156 return mAssets.getResourceIdentifier(name, defType, defPackage); 2157 } 2158 2159 /** 2160 * Return true if given resource identifier includes a package. 2161 * 2162 * @hide 2163 */ 2164 public static boolean resourceHasPackage(@AnyRes int resid) { 2165 return (resid >>> 24) != 0; 2166 } 2167 2168 /** 2169 * Return the full name for a given resource identifier. This name is 2170 * a single string of the form "package:type/entry". 2171 * 2172 * @param resid The resource identifier whose name is to be retrieved. 2173 * 2174 * @return A string holding the name of the resource. 2175 * 2176 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2177 * 2178 * @see #getResourcePackageName 2179 * @see #getResourceTypeName 2180 * @see #getResourceEntryName 2181 */ 2182 public String getResourceName(@AnyRes int resid) throws NotFoundException { 2183 String str = mAssets.getResourceName(resid); 2184 if (str != null) return str; 2185 throw new NotFoundException("Unable to find resource ID #0x" 2186 + Integer.toHexString(resid)); 2187 } 2188 2189 /** 2190 * Return the package name for a given resource identifier. 2191 * 2192 * @param resid The resource identifier whose package name is to be 2193 * retrieved. 2194 * 2195 * @return A string holding the package name of the resource. 2196 * 2197 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2198 * 2199 * @see #getResourceName 2200 */ 2201 public String getResourcePackageName(@AnyRes int resid) throws NotFoundException { 2202 String str = mAssets.getResourcePackageName(resid); 2203 if (str != null) return str; 2204 throw new NotFoundException("Unable to find resource ID #0x" 2205 + Integer.toHexString(resid)); 2206 } 2207 2208 /** 2209 * Return the type name for a given resource identifier. 2210 * 2211 * @param resid The resource identifier whose type name is to be 2212 * retrieved. 2213 * 2214 * @return A string holding the type name of the resource. 2215 * 2216 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2217 * 2218 * @see #getResourceName 2219 */ 2220 public String getResourceTypeName(@AnyRes int resid) throws NotFoundException { 2221 String str = mAssets.getResourceTypeName(resid); 2222 if (str != null) return str; 2223 throw new NotFoundException("Unable to find resource ID #0x" 2224 + Integer.toHexString(resid)); 2225 } 2226 2227 /** 2228 * Return the entry name for a given resource identifier. 2229 * 2230 * @param resid The resource identifier whose entry name is to be 2231 * retrieved. 2232 * 2233 * @return A string holding the entry name of the resource. 2234 * 2235 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2236 * 2237 * @see #getResourceName 2238 */ 2239 public String getResourceEntryName(@AnyRes int resid) throws NotFoundException { 2240 String str = mAssets.getResourceEntryName(resid); 2241 if (str != null) return str; 2242 throw new NotFoundException("Unable to find resource ID #0x" 2243 + Integer.toHexString(resid)); 2244 } 2245 2246 /** 2247 * Parse a series of {@link android.R.styleable#Extra <extra>} tags from 2248 * an XML file. You call this when you are at the parent tag of the 2249 * extra tags, and it will return once all of the child tags have been parsed. 2250 * This will call {@link #parseBundleExtra} for each extra tag encountered. 2251 * 2252 * @param parser The parser from which to retrieve the extras. 2253 * @param outBundle A Bundle in which to place all parsed extras. 2254 * @throws XmlPullParserException 2255 * @throws IOException 2256 */ 2257 public void parseBundleExtras(XmlResourceParser parser, Bundle outBundle) 2258 throws XmlPullParserException, IOException { 2259 int outerDepth = parser.getDepth(); 2260 int type; 2261 while ((type=parser.next()) != XmlPullParser.END_DOCUMENT 2262 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 2263 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 2264 continue; 2265 } 2266 2267 String nodeName = parser.getName(); 2268 if (nodeName.equals("extra")) { 2269 parseBundleExtra("extra", parser, outBundle); 2270 XmlUtils.skipCurrentTag(parser); 2271 2272 } else { 2273 XmlUtils.skipCurrentTag(parser); 2274 } 2275 } 2276 } 2277 2278 /** 2279 * Parse a name/value pair out of an XML tag holding that data. The 2280 * AttributeSet must be holding the data defined by 2281 * {@link android.R.styleable#Extra}. The following value types are supported: 2282 * <ul> 2283 * <li> {@link TypedValue#TYPE_STRING}: 2284 * {@link Bundle#putCharSequence Bundle.putCharSequence()} 2285 * <li> {@link TypedValue#TYPE_INT_BOOLEAN}: 2286 * {@link Bundle#putCharSequence Bundle.putBoolean()} 2287 * <li> {@link TypedValue#TYPE_FIRST_INT}-{@link TypedValue#TYPE_LAST_INT}: 2288 * {@link Bundle#putCharSequence Bundle.putBoolean()} 2289 * <li> {@link TypedValue#TYPE_FLOAT}: 2290 * {@link Bundle#putCharSequence Bundle.putFloat()} 2291 * </ul> 2292 * 2293 * @param tagName The name of the tag these attributes come from; this is 2294 * only used for reporting error messages. 2295 * @param attrs The attributes from which to retrieve the name/value pair. 2296 * @param outBundle The Bundle in which to place the parsed value. 2297 * @throws XmlPullParserException If the attributes are not valid. 2298 */ 2299 public void parseBundleExtra(String tagName, AttributeSet attrs, 2300 Bundle outBundle) throws XmlPullParserException { 2301 TypedArray sa = obtainAttributes(attrs, 2302 com.android.internal.R.styleable.Extra); 2303 2304 String name = sa.getString( 2305 com.android.internal.R.styleable.Extra_name); 2306 if (name == null) { 2307 sa.recycle(); 2308 throw new XmlPullParserException("<" + tagName 2309 + "> requires an android:name attribute at " 2310 + attrs.getPositionDescription()); 2311 } 2312 2313 TypedValue v = sa.peekValue( 2314 com.android.internal.R.styleable.Extra_value); 2315 if (v != null) { 2316 if (v.type == TypedValue.TYPE_STRING) { 2317 CharSequence cs = v.coerceToString(); 2318 outBundle.putCharSequence(name, cs); 2319 } else if (v.type == TypedValue.TYPE_INT_BOOLEAN) { 2320 outBundle.putBoolean(name, v.data != 0); 2321 } else if (v.type >= TypedValue.TYPE_FIRST_INT 2322 && v.type <= TypedValue.TYPE_LAST_INT) { 2323 outBundle.putInt(name, v.data); 2324 } else if (v.type == TypedValue.TYPE_FLOAT) { 2325 outBundle.putFloat(name, v.getFloat()); 2326 } else { 2327 sa.recycle(); 2328 throw new XmlPullParserException("<" + tagName 2329 + "> only supports string, integer, float, color, and boolean at " 2330 + attrs.getPositionDescription()); 2331 } 2332 } else { 2333 sa.recycle(); 2334 throw new XmlPullParserException("<" + tagName 2335 + "> requires an android:value or android:resource attribute at " 2336 + attrs.getPositionDescription()); 2337 } 2338 2339 sa.recycle(); 2340 } 2341 2342 /** 2343 * Retrieve underlying AssetManager storage for these resources. 2344 */ 2345 public final AssetManager getAssets() { 2346 return mAssets; 2347 } 2348 2349 /** 2350 * Call this to remove all cached loaded layout resources from the 2351 * Resources object. Only intended for use with performance testing 2352 * tools. 2353 */ 2354 public final void flushLayoutCache() { 2355 final String[] cachedXmlBlockFiles = mCachedXmlBlockFiles; 2356 final XmlBlock[] cachedXmlBlocks = mCachedXmlBlocks; 2357 synchronized (cachedXmlBlockFiles) { 2358 final int num = cachedXmlBlockFiles.length; 2359 for (int i = 0; i < num; i++) { 2360 final XmlBlock oldBlock = cachedXmlBlocks[i]; 2361 if (oldBlock != null) { 2362 oldBlock.close(); 2363 } 2364 cachedXmlBlockFiles[i] = null; 2365 cachedXmlBlocks[i] = null; 2366 } 2367 } 2368 } 2369 2370 /** 2371 * Start preloading of resource data using this Resources object. Only 2372 * for use by the zygote process for loading common system resources. 2373 * {@hide} 2374 */ 2375 public final void startPreloading() { 2376 synchronized (sSync) { 2377 if (sPreloaded) { 2378 throw new IllegalStateException("Resources already preloaded"); 2379 } 2380 sPreloaded = true; 2381 mPreloading = true; 2382 mConfiguration.densityDpi = DisplayMetrics.DENSITY_DEVICE; 2383 updateConfiguration(null, null); 2384 } 2385 } 2386 2387 /** 2388 * Called by zygote when it is done preloading resources, to change back 2389 * to normal Resources operation. 2390 */ 2391 public final void finishPreloading() { 2392 if (mPreloading) { 2393 mPreloading = false; 2394 flushLayoutCache(); 2395 } 2396 } 2397 2398 /** 2399 * @hide 2400 */ 2401 public LongSparseArray<ConstantState> getPreloadedDrawables() { 2402 return sPreloadedDrawables[0]; 2403 } 2404 2405 private boolean verifyPreloadConfig(int changingConfigurations, int allowVarying, 2406 int resourceId, String name) { 2407 // We allow preloading of resources even if they vary by font scale (which 2408 // doesn't impact resource selection) or density (which we handle specially by 2409 // simply turning off all preloading), as well as any other configs specified 2410 // by the caller. 2411 if (((changingConfigurations&~(ActivityInfo.CONFIG_FONT_SCALE | 2412 ActivityInfo.CONFIG_DENSITY)) & ~allowVarying) != 0) { 2413 String resName; 2414 try { 2415 resName = getResourceName(resourceId); 2416 } catch (NotFoundException e) { 2417 resName = "?"; 2418 } 2419 // This should never happen in production, so we should log a 2420 // warning even if we're not debugging. 2421 Log.w(TAG, "Preloaded " + name + " resource #0x" 2422 + Integer.toHexString(resourceId) 2423 + " (" + resName + ") that varies with configuration!!"); 2424 return false; 2425 } 2426 if (TRACE_FOR_PRELOAD) { 2427 String resName; 2428 try { 2429 resName = getResourceName(resourceId); 2430 } catch (NotFoundException e) { 2431 resName = "?"; 2432 } 2433 Log.w(TAG, "Preloading " + name + " resource #0x" 2434 + Integer.toHexString(resourceId) 2435 + " (" + resName + ")"); 2436 } 2437 return true; 2438 } 2439 2440 @Nullable 2441 Drawable loadDrawable(TypedValue value, int id, Theme theme) throws NotFoundException { 2442 try { 2443 if (TRACE_FOR_PRELOAD) { 2444 // Log only framework resources 2445 if ((id >>> 24) == 0x1) { 2446 final String name = getResourceName(id); 2447 if (name != null) { 2448 Log.d("PreloadDrawable", name); 2449 } 2450 } 2451 } 2452 2453 final boolean isColorDrawable; 2454 final DrawableCache caches; 2455 final long key; 2456 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT 2457 && value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2458 isColorDrawable = true; 2459 caches = mColorDrawableCache; 2460 key = value.data; 2461 } else { 2462 isColorDrawable = false; 2463 caches = mDrawableCache; 2464 key = (((long) value.assetCookie) << 32) | value.data; 2465 } 2466 2467 // First, check whether we have a cached version of this drawable 2468 // that was inflated against the specified theme. 2469 if (!mPreloading) { 2470 final Drawable cachedDrawable = caches.getInstance(key, theme); 2471 if (cachedDrawable != null) { 2472 return cachedDrawable; 2473 } 2474 } 2475 2476 // Next, check preloaded drawables. These may contain unresolved theme 2477 // attributes. 2478 final ConstantState cs; 2479 if (isColorDrawable) { 2480 cs = sPreloadedColorDrawables.get(key); 2481 } else { 2482 cs = sPreloadedDrawables[mConfiguration.getLayoutDirection()].get(key); 2483 } 2484 2485 Drawable dr; 2486 if (cs != null) { 2487 dr = cs.newDrawable(this); 2488 } else if (isColorDrawable) { 2489 dr = new ColorDrawable(value.data); 2490 } else { 2491 dr = loadDrawableForCookie(value, id, null); 2492 } 2493 2494 // Determine if the drawable has unresolved theme attributes. If it 2495 // does, we'll need to apply a theme and store it in a theme-specific 2496 // cache. 2497 final boolean canApplyTheme = dr != null && dr.canApplyTheme(); 2498 if (canApplyTheme && theme != null) { 2499 dr = dr.mutate(); 2500 dr.applyTheme(theme); 2501 dr.clearMutated(); 2502 } 2503 2504 // If we were able to obtain a drawable, store it in the appropriate 2505 // cache: preload, not themed, null theme, or theme-specific. 2506 if (dr != null) { 2507 dr.setChangingConfigurations(value.changingConfigurations); 2508 cacheDrawable(value, isColorDrawable, caches, theme, canApplyTheme, key, dr); 2509 } 2510 2511 return dr; 2512 } catch (Exception e) { 2513 String name; 2514 try { 2515 name = getResourceName(id); 2516 } catch (NotFoundException e2) { 2517 name = "(missing name)"; 2518 } 2519 2520 // The target drawable might fail to load for any number of 2521 // reasons, but we always want to include the resource name. 2522 // Since the client already expects this method to throw a 2523 // NotFoundException, just throw one of those. 2524 final NotFoundException nfe = new NotFoundException("Drawable " + name 2525 + " with resource ID #0x" + Integer.toHexString(id), e); 2526 nfe.setStackTrace(new StackTraceElement[0]); 2527 throw nfe; 2528 } 2529 } 2530 2531 private void cacheDrawable(TypedValue value, boolean isColorDrawable, DrawableCache caches, 2532 Theme theme, boolean usesTheme, long key, Drawable dr) { 2533 final ConstantState cs = dr.getConstantState(); 2534 if (cs == null) { 2535 return; 2536 } 2537 2538 if (mPreloading) { 2539 final int changingConfigs = cs.getChangingConfigurations(); 2540 if (isColorDrawable) { 2541 if (verifyPreloadConfig(changingConfigs, 0, value.resourceId, "drawable")) { 2542 sPreloadedColorDrawables.put(key, cs); 2543 } 2544 } else { 2545 if (verifyPreloadConfig( 2546 changingConfigs, LAYOUT_DIR_CONFIG, value.resourceId, "drawable")) { 2547 if ((changingConfigs & LAYOUT_DIR_CONFIG) == 0) { 2548 // If this resource does not vary based on layout direction, 2549 // we can put it in all of the preload maps. 2550 sPreloadedDrawables[0].put(key, cs); 2551 sPreloadedDrawables[1].put(key, cs); 2552 } else { 2553 // Otherwise, only in the layout dir we loaded it for. 2554 sPreloadedDrawables[mConfiguration.getLayoutDirection()].put(key, cs); 2555 } 2556 } 2557 } 2558 } else { 2559 synchronized (mAccessLock) { 2560 caches.put(key, theme, cs, usesTheme); 2561 } 2562 } 2563 } 2564 2565 /** 2566 * Loads a drawable from XML or resources stream. 2567 */ 2568 private Drawable loadDrawableForCookie(TypedValue value, int id, Theme theme) { 2569 if (value.string == null) { 2570 throw new NotFoundException("Resource \"" + getResourceName(id) + "\" (" 2571 + Integer.toHexString(id) + ") is not a Drawable (color or path): " + value); 2572 } 2573 2574 final String file = value.string.toString(); 2575 2576 if (TRACE_FOR_MISS_PRELOAD) { 2577 // Log only framework resources 2578 if ((id >>> 24) == 0x1) { 2579 final String name = getResourceName(id); 2580 if (name != null) { 2581 Log.d(TAG, "Loading framework drawable #" + Integer.toHexString(id) 2582 + ": " + name + " at " + file); 2583 } 2584 } 2585 } 2586 2587 if (DEBUG_LOAD) { 2588 Log.v(TAG, "Loading drawable for cookie " + value.assetCookie + ": " + file); 2589 } 2590 2591 final Drawable dr; 2592 2593 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 2594 try { 2595 if (file.endsWith(".xml")) { 2596 final XmlResourceParser rp = loadXmlResourceParser( 2597 file, id, value.assetCookie, "drawable"); 2598 dr = Drawable.createFromXml(this, rp, theme); 2599 rp.close(); 2600 } else { 2601 final InputStream is = mAssets.openNonAsset( 2602 value.assetCookie, file, AssetManager.ACCESS_STREAMING); 2603 dr = Drawable.createFromResourceStream(this, value, is, file, null); 2604 is.close(); 2605 } 2606 } catch (Exception e) { 2607 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2608 final NotFoundException rnf = new NotFoundException( 2609 "File " + file + " from drawable resource ID #0x" + Integer.toHexString(id)); 2610 rnf.initCause(e); 2611 throw rnf; 2612 } 2613 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2614 2615 return dr; 2616 } 2617 2618 @Nullable 2619 ColorStateList loadColorStateList(TypedValue value, int id, Theme theme) 2620 throws NotFoundException { 2621 if (TRACE_FOR_PRELOAD) { 2622 // Log only framework resources 2623 if ((id >>> 24) == 0x1) { 2624 final String name = getResourceName(id); 2625 if (name != null) android.util.Log.d("PreloadColorStateList", name); 2626 } 2627 } 2628 2629 final long key = (((long) value.assetCookie) << 32) | value.data; 2630 2631 ColorStateList csl; 2632 2633 // Handle inline color definitions. 2634 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT 2635 && value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2636 final android.content.res.ConstantState<ColorStateList> factory = 2637 sPreloadedColorStateLists.get(key); 2638 if (factory != null) { 2639 return factory.newInstance(); 2640 } 2641 2642 csl = ColorStateList.valueOf(value.data); 2643 2644 if (mPreloading) { 2645 if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId, 2646 "color")) { 2647 sPreloadedColorStateLists.put(key, csl.getConstantState()); 2648 } 2649 } 2650 2651 return csl; 2652 } 2653 2654 final ConfigurationBoundResourceCache<ColorStateList> cache = mColorStateListCache; 2655 csl = cache.getInstance(key, theme); 2656 if (csl != null) { 2657 return csl; 2658 } 2659 2660 final android.content.res.ConstantState<ColorStateList> factory = 2661 sPreloadedColorStateLists.get(key); 2662 if (factory != null) { 2663 csl = factory.newInstance(this, theme); 2664 } 2665 2666 if (csl == null) { 2667 csl = loadColorStateListForCookie(value, id, theme); 2668 } 2669 2670 if (csl != null) { 2671 if (mPreloading) { 2672 if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId, 2673 "color")) { 2674 sPreloadedColorStateLists.put(key, csl.getConstantState()); 2675 } 2676 } else { 2677 cache.put(key, theme, csl.getConstantState()); 2678 } 2679 } 2680 2681 return csl; 2682 } 2683 2684 private ColorStateList loadColorStateListForCookie(TypedValue value, int id, Theme theme) { 2685 if (value.string == null) { 2686 throw new UnsupportedOperationException( 2687 "Can't convert to color state list: type=0x" + value.type); 2688 } 2689 2690 final String file = value.string.toString(); 2691 2692 if (TRACE_FOR_MISS_PRELOAD) { 2693 // Log only framework resources 2694 if ((id >>> 24) == 0x1) { 2695 final String name = getResourceName(id); 2696 if (name != null) { 2697 Log.d(TAG, "Loading framework color state list #" + Integer.toHexString(id) 2698 + ": " + name + " at " + file); 2699 } 2700 } 2701 } 2702 2703 if (DEBUG_LOAD) { 2704 Log.v(TAG, "Loading color state list for cookie " + value.assetCookie + ": " + file); 2705 } 2706 2707 final ColorStateList csl; 2708 2709 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 2710 if (file.endsWith(".xml")) { 2711 try { 2712 final XmlResourceParser rp = loadXmlResourceParser( 2713 file, id, value.assetCookie, "colorstatelist"); 2714 csl = ColorStateList.createFromXml(this, rp, theme); 2715 rp.close(); 2716 } catch (Exception e) { 2717 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2718 final NotFoundException rnf = new NotFoundException( 2719 "File " + file + " from color state list resource ID #0x" 2720 + Integer.toHexString(id)); 2721 rnf.initCause(e); 2722 throw rnf; 2723 } 2724 } else { 2725 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2726 throw new NotFoundException( 2727 "File " + file + " from drawable resource ID #0x" 2728 + Integer.toHexString(id) + ": .xml extension required"); 2729 } 2730 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2731 2732 return csl; 2733 } 2734 2735 /** 2736 * Loads an XML parser for the specified file. 2737 * 2738 * @param id the resource identifier for the file 2739 * @param type the type of resource (used for logging) 2740 * @return a parser for the specified XML file 2741 * @throws NotFoundException if the file could not be loaded 2742 */ 2743 @NonNull 2744 XmlResourceParser loadXmlResourceParser(@AnyRes int id, @NonNull String type) 2745 throws NotFoundException { 2746 final TypedValue value = obtainTempTypedValue(id); 2747 try { 2748 if (value.type == TypedValue.TYPE_STRING) { 2749 return loadXmlResourceParser(value.string.toString(), id, 2750 value.assetCookie, type); 2751 } 2752 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 2753 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 2754 } finally { 2755 releaseTempTypedValue(value); 2756 } 2757 } 2758 2759 /** 2760 * Loads an XML parser for the specified file. 2761 * 2762 * @param file the path for the XML file to parse 2763 * @param id the resource identifier for the file 2764 * @param assetCookie the asset cookie for the file 2765 * @param type the type of resource (used for logging) 2766 * @return a parser for the specified XML file 2767 * @throws NotFoundException if the file could not be loaded 2768 */ 2769 @NonNull 2770 XmlResourceParser loadXmlResourceParser(@NonNull String file, @AnyRes int id, 2771 int assetCookie, @NonNull String type) throws NotFoundException { 2772 if (id != 0) { 2773 try { 2774 final String[] cachedXmlBlockFiles = mCachedXmlBlockFiles; 2775 final XmlBlock[] cachedXmlBlocks = mCachedXmlBlocks; 2776 synchronized (cachedXmlBlockFiles) { 2777 // First see if this block is in our cache. 2778 final int num = cachedXmlBlockFiles.length; 2779 for (int i = 0; i < num; i++) { 2780 if (cachedXmlBlockFiles[i] != null 2781 && cachedXmlBlockFiles[i].equals(file)) { 2782 return cachedXmlBlocks[i].newParser(); 2783 } 2784 } 2785 2786 // Not in the cache, create a new block and put it at 2787 // the next slot in the cache. 2788 final XmlBlock block = mAssets.openXmlBlockAsset(assetCookie, file); 2789 if (block != null) { 2790 final int pos = (mLastCachedXmlBlockIndex + 1) % num; 2791 mLastCachedXmlBlockIndex = pos; 2792 final XmlBlock oldBlock = cachedXmlBlocks[pos]; 2793 if (oldBlock != null) { 2794 oldBlock.close(); 2795 } 2796 cachedXmlBlockFiles[pos] = file; 2797 cachedXmlBlocks[pos] = block; 2798 return block.newParser(); 2799 } 2800 } 2801 } catch (Exception e) { 2802 final NotFoundException rnf = new NotFoundException("File " + file 2803 + " from xml type " + type + " resource ID #0x" + Integer.toHexString(id)); 2804 rnf.initCause(e); 2805 throw rnf; 2806 } 2807 } 2808 2809 throw new NotFoundException("File " + file + " from xml type " + type + " resource ID #0x" 2810 + Integer.toHexString(id)); 2811 } 2812 2813 /** 2814 * Obtains styled attributes from the theme, if available, or unstyled 2815 * resources if the theme is null. 2816 * 2817 * @hide 2818 */ 2819 public static TypedArray obtainAttributes( 2820 Resources res, Theme theme, AttributeSet set, int[] attrs) { 2821 if (theme == null) { 2822 return res.obtainAttributes(set, attrs); 2823 } 2824 return theme.obtainStyledAttributes(set, attrs, 0, 0); 2825 } 2826 2827 private Resources() { 2828 mAssets = AssetManager.getSystem(); 2829 mClassLoader = ClassLoader.getSystemClassLoader(); 2830 // NOTE: Intentionally leaving this uninitialized (all values set 2831 // to zero), so that anyone who tries to do something that requires 2832 // metrics will get a very wrong value. 2833 mConfiguration.setToDefaults(); 2834 mMetrics.setToDefaults(); 2835 updateConfiguration(null, null); 2836 mAssets.ensureStringBlocks(); 2837 } 2838} 2839