Resources.java revision 834641b3908b21e7054c290e116d76e3d5e6888c
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(); 164 165 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 string value associated with a particular resource ID. The 321 * returned object will be a String if this is a plain string; it will be 322 * some other type of CharSequence if it is styled. 323 * {@more} 324 * 325 * @param id The desired resource identifier, as generated by the aapt 326 * tool. This integer encodes the package, type, and resource 327 * entry. The value 0 is an invalid identifier. 328 * 329 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 330 * 331 * @return CharSequence The string data associated with the resource, plus 332 * possibly styled text information. 333 */ 334 public CharSequence getText(@StringRes int id) throws NotFoundException { 335 CharSequence res = mAssets.getResourceText(id); 336 if (res != null) { 337 return res; 338 } 339 throw new NotFoundException("String resource ID #0x" 340 + Integer.toHexString(id)); 341 } 342 343 /** 344 * Returns the character sequence necessary for grammatically correct pluralization 345 * of the given resource ID for the given quantity. 346 * Note that the character sequence is selected based solely on grammatical necessity, 347 * and that such rules differ between languages. Do not assume you know which string 348 * will be returned for a given quantity. See 349 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 350 * for more detail. 351 * 352 * @param id The desired resource identifier, as generated by the aapt 353 * tool. This integer encodes the package, type, and resource 354 * entry. The value 0 is an invalid identifier. 355 * @param quantity The number used to get the correct string for the current language's 356 * plural rules. 357 * 358 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 359 * 360 * @return CharSequence The string data associated with the resource, plus 361 * possibly styled text information. 362 */ 363 public CharSequence getQuantityText(@PluralsRes int id, int quantity) 364 throws NotFoundException { 365 PluralRules rule = getPluralRule(); 366 CharSequence res = mAssets.getResourceBagText(id, 367 attrForQuantityCode(rule.select(quantity))); 368 if (res != null) { 369 return res; 370 } 371 res = mAssets.getResourceBagText(id, ID_OTHER); 372 if (res != null) { 373 return res; 374 } 375 throw new NotFoundException("Plural resource ID #0x" + Integer.toHexString(id) 376 + " quantity=" + quantity 377 + " item=" + rule.select(quantity)); 378 } 379 380 private PluralRules getPluralRule() { 381 synchronized (sSync) { 382 if (mPluralRule == null) { 383 mPluralRule = PluralRules.forLocale(mConfiguration.getLocales().getPrimary()); 384 } 385 return mPluralRule; 386 } 387 } 388 389 private static int attrForQuantityCode(String quantityCode) { 390 switch (quantityCode) { 391 case PluralRules.KEYWORD_ZERO: return 0x01000005; 392 case PluralRules.KEYWORD_ONE: return 0x01000006; 393 case PluralRules.KEYWORD_TWO: return 0x01000007; 394 case PluralRules.KEYWORD_FEW: return 0x01000008; 395 case PluralRules.KEYWORD_MANY: return 0x01000009; 396 default: return ID_OTHER; 397 } 398 } 399 400 /** 401 * Return the string value associated with a particular resource ID. It 402 * will be stripped of any styled text information. 403 * {@more} 404 * 405 * @param id The desired resource identifier, as generated by the aapt 406 * tool. This integer encodes the package, type, and resource 407 * entry. The value 0 is an invalid identifier. 408 * 409 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 410 * 411 * @return String The string data associated with the resource, 412 * stripped of styled text information. 413 */ 414 @NonNull 415 public String getString(@StringRes int id) throws NotFoundException { 416 final CharSequence res = getText(id); 417 if (res != null) { 418 return res.toString(); 419 } 420 throw new NotFoundException("String resource ID #0x" 421 + Integer.toHexString(id)); 422 } 423 424 425 /** 426 * Return the string value associated with a particular resource ID, 427 * substituting the format arguments as defined in {@link java.util.Formatter} 428 * and {@link java.lang.String#format}. It will be stripped of any styled text 429 * information. 430 * {@more} 431 * 432 * @param id The desired resource identifier, as generated by the aapt 433 * tool. This integer encodes the package, type, and resource 434 * entry. The value 0 is an invalid identifier. 435 * 436 * @param formatArgs The format arguments that will be used for substitution. 437 * 438 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 439 * 440 * @return String The string data associated with the resource, 441 * stripped of styled text information. 442 */ 443 @NonNull 444 public String getString(@StringRes int id, Object... formatArgs) throws NotFoundException { 445 final String raw = getString(id); 446 return String.format(mConfiguration.getLocales().getPrimary(), raw, formatArgs); 447 } 448 449 /** 450 * Formats the string necessary for grammatically correct pluralization 451 * of the given resource ID for the given quantity, using the given arguments. 452 * Note that the string is selected based solely on grammatical necessity, 453 * and that such rules differ between languages. Do not assume you know which string 454 * will be returned for a given quantity. See 455 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 456 * for more detail. 457 * 458 * <p>Substitution of format arguments works as if using 459 * {@link java.util.Formatter} and {@link java.lang.String#format}. 460 * The resulting string will be stripped of any styled text information. 461 * 462 * @param id The desired resource identifier, as generated by the aapt 463 * tool. This integer encodes the package, type, and resource 464 * entry. The value 0 is an invalid identifier. 465 * @param quantity The number used to get the correct string for the current language's 466 * plural rules. 467 * @param formatArgs The format arguments that will be used for substitution. 468 * 469 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 470 * 471 * @return String The string data associated with the resource, 472 * stripped of styled text information. 473 */ 474 public String getQuantityString(@PluralsRes int id, int quantity, Object... formatArgs) 475 throws NotFoundException { 476 String raw = getQuantityText(id, quantity).toString(); 477 return String.format(mConfiguration.getLocales().getPrimary(), raw, formatArgs); 478 } 479 480 /** 481 * Returns the string necessary for grammatically correct pluralization 482 * of the given resource ID for the given quantity. 483 * Note that the string is selected based solely on grammatical necessity, 484 * and that such rules differ between languages. Do not assume you know which string 485 * will be returned for a given quantity. See 486 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 487 * for more detail. 488 * 489 * @param id The desired resource identifier, as generated by the aapt 490 * tool. This integer encodes the package, type, and resource 491 * entry. The value 0 is an invalid identifier. 492 * @param quantity The number used to get the correct string for the current language's 493 * plural rules. 494 * 495 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 496 * 497 * @return String The string data associated with the resource, 498 * stripped of styled text information. 499 */ 500 public String getQuantityString(@PluralsRes int id, int quantity) 501 throws NotFoundException { 502 return getQuantityText(id, quantity).toString(); 503 } 504 505 /** 506 * Return the string value associated with a particular resource ID. The 507 * returned object will be a String if this is a plain string; it will be 508 * some other type of CharSequence if it is styled. 509 * 510 * @param id The desired resource identifier, as generated by the aapt 511 * tool. This integer encodes the package, type, and resource 512 * entry. The value 0 is an invalid identifier. 513 * 514 * @param def The default CharSequence to return. 515 * 516 * @return CharSequence The string data associated with the resource, plus 517 * possibly styled text information, or def if id is 0 or not found. 518 */ 519 public CharSequence getText(@StringRes int id, CharSequence def) { 520 CharSequence res = id != 0 ? mAssets.getResourceText(id) : null; 521 return res != null ? res : def; 522 } 523 524 /** 525 * Return the styled text array associated with a particular resource ID. 526 * 527 * @param id The desired resource identifier, as generated by the aapt 528 * tool. This integer encodes the package, type, and resource 529 * entry. The value 0 is an invalid identifier. 530 * 531 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 532 * 533 * @return The styled text array associated with the resource. 534 */ 535 public CharSequence[] getTextArray(@ArrayRes int id) throws NotFoundException { 536 CharSequence[] res = mAssets.getResourceTextArray(id); 537 if (res != null) { 538 return res; 539 } 540 throw new NotFoundException("Text array resource ID #0x" 541 + Integer.toHexString(id)); 542 } 543 544 /** 545 * Return the string array associated with a particular resource ID. 546 * 547 * @param id The desired resource identifier, as generated by the aapt 548 * tool. This integer encodes the package, type, and resource 549 * entry. The value 0 is an invalid identifier. 550 * 551 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 552 * 553 * @return The string array associated with the resource. 554 */ 555 public String[] getStringArray(@ArrayRes int id) 556 throws NotFoundException { 557 String[] res = mAssets.getResourceStringArray(id); 558 if (res != null) { 559 return res; 560 } 561 throw new NotFoundException("String array resource ID #0x" 562 + Integer.toHexString(id)); 563 } 564 565 /** 566 * Return the int array associated with a particular resource ID. 567 * 568 * @param id The desired resource identifier, as generated by the aapt 569 * tool. This integer encodes the package, type, and resource 570 * entry. The value 0 is an invalid identifier. 571 * 572 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 573 * 574 * @return The int array associated with the resource. 575 */ 576 public int[] getIntArray(@ArrayRes int id) throws NotFoundException { 577 int[] res = mAssets.getArrayIntResource(id); 578 if (res != null) { 579 return res; 580 } 581 throw new NotFoundException("Int array resource ID #0x" 582 + Integer.toHexString(id)); 583 } 584 585 /** 586 * Return an array of heterogeneous values. 587 * 588 * @param id The desired resource identifier, as generated by the aapt 589 * tool. This integer encodes the package, type, and resource 590 * entry. The value 0 is an invalid identifier. 591 * 592 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 593 * 594 * @return Returns a TypedArray holding an array of the array values. 595 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 596 * when done with it. 597 */ 598 public TypedArray obtainTypedArray(@ArrayRes int id) 599 throws NotFoundException { 600 int len = mAssets.getArraySize(id); 601 if (len < 0) { 602 throw new NotFoundException("Array resource ID #0x" 603 + Integer.toHexString(id)); 604 } 605 606 TypedArray array = TypedArray.obtain(this, len); 607 array.mLength = mAssets.retrieveArray(id, array.mData); 608 array.mIndices[0] = 0; 609 610 return array; 611 } 612 613 /** 614 * Retrieve a dimensional for a particular resource ID. Unit 615 * conversions are based on the current {@link DisplayMetrics} associated 616 * with the resources. 617 * 618 * @param id The desired resource identifier, as generated by the aapt 619 * tool. This integer encodes the package, type, and resource 620 * entry. The value 0 is an invalid identifier. 621 * 622 * @return Resource dimension value multiplied by the appropriate 623 * metric. 624 * 625 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 626 * 627 * @see #getDimensionPixelOffset 628 * @see #getDimensionPixelSize 629 */ 630 public float getDimension(@DimenRes int id) throws NotFoundException { 631 final TypedValue value = obtainTempTypedValue(id); 632 try { 633 if (value.type == TypedValue.TYPE_DIMENSION) { 634 return TypedValue.complexToDimension(value.data, mMetrics); 635 } 636 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 637 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 638 } finally { 639 releaseTempTypedValue(value); 640 } 641 } 642 643 /** 644 * Retrieve a dimensional for a particular resource ID for use 645 * as an offset in raw pixels. This is the same as 646 * {@link #getDimension}, except the returned value is converted to 647 * integer pixels for you. An offset conversion involves simply 648 * truncating the base value to an integer. 649 * 650 * @param id The desired resource identifier, as generated by the aapt 651 * tool. This integer encodes the package, type, and resource 652 * entry. The value 0 is an invalid identifier. 653 * 654 * @return Resource dimension value multiplied by the appropriate 655 * metric and truncated to integer pixels. 656 * 657 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 658 * 659 * @see #getDimension 660 * @see #getDimensionPixelSize 661 */ 662 public int getDimensionPixelOffset(@DimenRes int id) throws NotFoundException { 663 final TypedValue value = obtainTempTypedValue(id); 664 try { 665 if (value.type == TypedValue.TYPE_DIMENSION) { 666 return TypedValue.complexToDimensionPixelOffset(value.data, mMetrics); 667 } 668 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 669 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 670 } finally { 671 releaseTempTypedValue(value); 672 } 673 } 674 675 /** 676 * Retrieve a dimensional for a particular resource ID for use 677 * as a size in raw pixels. This is the same as 678 * {@link #getDimension}, except the returned value is converted to 679 * integer pixels for use as a size. A size conversion involves 680 * rounding the base value, and ensuring that a non-zero base value 681 * is at least one pixel in size. 682 * 683 * @param id The desired resource identifier, as generated by the aapt 684 * tool. This integer encodes the package, type, and resource 685 * entry. The value 0 is an invalid identifier. 686 * 687 * @return Resource dimension value multiplied by the appropriate 688 * metric and truncated to integer pixels. 689 * 690 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 691 * 692 * @see #getDimension 693 * @see #getDimensionPixelOffset 694 */ 695 public int getDimensionPixelSize(@DimenRes int id) throws NotFoundException { 696 final TypedValue value = obtainTempTypedValue(id); 697 try { 698 if (value.type == TypedValue.TYPE_DIMENSION) { 699 return TypedValue.complexToDimensionPixelSize(value.data, mMetrics); 700 } 701 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 702 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 703 } finally { 704 releaseTempTypedValue(value); 705 } 706 } 707 708 /** 709 * Retrieve a fractional unit for a particular resource ID. 710 * 711 * @param id The desired resource identifier, as generated by the aapt 712 * tool. This integer encodes the package, type, and resource 713 * entry. The value 0 is an invalid identifier. 714 * @param base The base value of this fraction. In other words, a 715 * standard fraction is multiplied by this value. 716 * @param pbase The parent base value of this fraction. In other 717 * words, a parent fraction (nn%p) is multiplied by this 718 * value. 719 * 720 * @return Attribute fractional value multiplied by the appropriate 721 * base value. 722 * 723 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 724 */ 725 public float getFraction(@FractionRes int id, int base, int pbase) { 726 final TypedValue value = obtainTempTypedValue(id); 727 try { 728 if (value.type == TypedValue.TYPE_FRACTION) { 729 return TypedValue.complexToFraction(value.data, base, pbase); 730 } 731 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 732 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 733 } finally { 734 releaseTempTypedValue(value); 735 } 736 } 737 738 /** 739 * Return a drawable object associated with a particular resource ID. 740 * Various types of objects will be returned depending on the underlying 741 * resource -- for example, a solid color, PNG image, scalable image, etc. 742 * The Drawable API hides these implementation details. 743 * 744 * <p class="note"><strong>Note:</strong> Prior to 745 * {@link android.os.Build.VERSION_CODES#JELLY_BEAN}, this function 746 * would not correctly retrieve the final configuration density when 747 * the resource ID passed here is an alias to another Drawable resource. 748 * This means that if the density configuration of the alias resource 749 * is different than the actual resource, the density of the returned 750 * Drawable would be incorrect, resulting in bad scaling. To work 751 * around this, you can instead retrieve the Drawable through 752 * {@link TypedArray#getDrawable TypedArray.getDrawable}. Use 753 * {@link android.content.Context#obtainStyledAttributes(int[]) 754 * Context.obtainStyledAttributes} with 755 * an array containing the resource ID of interest to create the TypedArray.</p> 756 * 757 * <p class="note"><strong>Note:</strong> To obtain a themed drawable, use 758 * {@link android.content.Context#getDrawable(int) Context.getDrawable(int)} 759 * or {@link #getDrawable(int, Theme)} passing the desired theme.</p> 760 * 761 * @param id The desired resource identifier, as generated by the aapt 762 * tool. This integer encodes the package, type, and resource 763 * entry. The value 0 is an invalid identifier. 764 * @return Drawable An object that can be used to draw this resource. 765 * @throws NotFoundException Throws NotFoundException if the given ID does 766 * not exist. 767 * @see #getDrawable(int, Theme) 768 * @deprecated Use {@link #getDrawable(int, Theme)} instead. 769 */ 770 @Deprecated 771 @Nullable 772 public Drawable getDrawable(@DrawableRes int id) throws NotFoundException { 773 final Drawable d = getDrawable(id, null); 774 if (d != null && d.canApplyTheme()) { 775 Log.w(TAG, "Drawable " + getResourceName(id) + " has unresolved theme " 776 + "attributes! Consider using Resources.getDrawable(int, Theme) or " 777 + "Context.getDrawable(int).", new RuntimeException()); 778 } 779 return d; 780 } 781 782 /** 783 * Return a drawable object associated with a particular resource ID and 784 * styled for the specified theme. Various types of objects will be 785 * returned depending on the underlying resource -- for example, a solid 786 * color, PNG image, scalable image, etc. 787 * 788 * @param id The desired resource identifier, as generated by the aapt 789 * tool. This integer encodes the package, type, and resource 790 * entry. The value 0 is an invalid identifier. 791 * @param theme The theme used to style the drawable attributes, may be {@code null}. 792 * @return Drawable An object that can be used to draw this resource. 793 * @throws NotFoundException Throws NotFoundException if the given ID does 794 * not exist. 795 */ 796 @Nullable 797 public Drawable getDrawable(@DrawableRes int id, @Nullable Theme theme) 798 throws NotFoundException { 799 final TypedValue value = obtainTempTypedValue(id); 800 try { 801 return loadDrawable(value, id, theme); 802 } finally { 803 releaseTempTypedValue(value); 804 } 805 } 806 807 /** 808 * Return a drawable object associated with a particular resource ID for the 809 * given screen density in DPI. This will set the drawable's density to be 810 * the device's density multiplied by the ratio of actual drawable density 811 * to requested density. This allows the drawable to be scaled up to the 812 * correct size if needed. Various types of objects will be returned 813 * depending on the underlying resource -- for example, a solid color, PNG 814 * image, scalable image, etc. The Drawable API hides these implementation 815 * details. 816 * 817 * <p class="note"><strong>Note:</strong> To obtain a themed drawable, use 818 * {@link android.content.Context#getDrawable(int) Context.getDrawable(int)} 819 * or {@link #getDrawableForDensity(int, int, Theme)} passing the desired 820 * theme.</p> 821 * 822 * @param id The desired resource identifier, as generated by the aapt tool. 823 * This integer encodes the package, type, and resource entry. 824 * The value 0 is an invalid identifier. 825 * @param density the desired screen density indicated by the resource as 826 * found in {@link DisplayMetrics}. 827 * @return Drawable An object that can be used to draw this resource. 828 * @throws NotFoundException Throws NotFoundException if the given ID does 829 * not exist. 830 * @see #getDrawableForDensity(int, int, Theme) 831 * @deprecated Use {@link #getDrawableForDensity(int, int, Theme)} instead. 832 */ 833 @Deprecated 834 @Nullable 835 public Drawable getDrawableForDensity(@DrawableRes int id, int density) 836 throws NotFoundException { 837 return getDrawableForDensity(id, density, null); 838 } 839 840 /** 841 * Return a drawable object associated with a particular resource ID for the 842 * given screen density in DPI and styled for the specified theme. 843 * 844 * @param id The desired resource identifier, as generated by the aapt tool. 845 * This integer encodes the package, type, and resource entry. 846 * The value 0 is an invalid identifier. 847 * @param density The desired screen density indicated by the resource as 848 * found in {@link DisplayMetrics}. 849 * @param theme The theme used to style the drawable attributes, may be {@code null}. 850 * @return Drawable An object that can be used to draw this resource. 851 * @throws NotFoundException Throws NotFoundException if the given ID does 852 * not exist. 853 */ 854 @Nullable 855 public Drawable getDrawableForDensity(@DrawableRes int id, int density, @Nullable Theme theme) { 856 final TypedValue value = obtainTempTypedValue(id); 857 try { 858 getValueForDensity(id, density, value, true); 859 860 // If the drawable's XML lives in our current density qualifier, 861 // it's okay to use a scaled version from the cache. Otherwise, we 862 // need to actually load the drawable from XML. 863 final boolean useCache = value.density == mMetrics.densityDpi; 864 865 /* 866 * Pretend the requested density is actually the display density. If 867 * the drawable returned is not the requested density, then force it 868 * to be scaled later by dividing its density by the ratio of 869 * requested density to actual device density. Drawables that have 870 * undefined density or no density don't need to be handled here. 871 */ 872 if (value.density > 0 && value.density != TypedValue.DENSITY_NONE) { 873 if (value.density == density) { 874 value.density = mMetrics.densityDpi; 875 } else { 876 value.density = (value.density * mMetrics.densityDpi) / density; 877 } 878 } 879 880 return loadDrawable(value, id, theme, useCache); 881 } finally { 882 releaseTempTypedValue(value); 883 } 884 } 885 886 /** 887 * Return a movie object associated with the particular resource ID. 888 * @param id The desired resource identifier, as generated by the aapt 889 * tool. This integer encodes the package, type, and resource 890 * entry. The value 0 is an invalid identifier. 891 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 892 * 893 */ 894 public Movie getMovie(@RawRes int id) throws NotFoundException { 895 InputStream is = openRawResource(id); 896 Movie movie = Movie.decodeStream(is); 897 try { 898 is.close(); 899 } 900 catch (java.io.IOException e) { 901 // don't care, since the return value is valid 902 } 903 return movie; 904 } 905 906 /** 907 * Returns a color integer associated with a particular resource ID. If the 908 * resource holds a complex {@link ColorStateList}, then the default color 909 * from the set is returned. 910 * 911 * @param id The desired resource identifier, as generated by the aapt 912 * tool. This integer encodes the package, type, and resource 913 * entry. The value 0 is an invalid identifier. 914 * 915 * @throws NotFoundException Throws NotFoundException if the given ID does 916 * not exist. 917 * 918 * @return A single color value in the form 0xAARRGGBB. 919 * @deprecated Use {@link #getColor(int, Theme)} instead. 920 */ 921 @ColorInt 922 @Deprecated 923 public int getColor(@ColorRes int id) throws NotFoundException { 924 return getColor(id, null); 925 } 926 927 /** 928 * Returns a themed color integer associated with a particular resource ID. 929 * If the resource holds a complex {@link ColorStateList}, then the default 930 * color from the set is returned. 931 * 932 * @param id The desired resource identifier, as generated by the aapt 933 * tool. This integer encodes the package, type, and resource 934 * entry. The value 0 is an invalid identifier. 935 * @param theme The theme used to style the color attributes, may be 936 * {@code null}. 937 * 938 * @throws NotFoundException Throws NotFoundException if the given ID does 939 * not exist. 940 * 941 * @return A single color value in the form 0xAARRGGBB. 942 */ 943 @ColorInt 944 public int getColor(@ColorRes int id, @Nullable Theme theme) throws NotFoundException { 945 final TypedValue value = obtainTempTypedValue(id); 946 try { 947 if (value.type >= TypedValue.TYPE_FIRST_INT 948 && value.type <= TypedValue.TYPE_LAST_INT) { 949 return value.data; 950 } else if (value.type != TypedValue.TYPE_STRING) { 951 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 952 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 953 } 954 955 final ColorStateList csl = loadColorStateList(value, id, theme); 956 return csl.getDefaultColor(); 957 } finally { 958 releaseTempTypedValue(value); 959 } 960 } 961 962 /** 963 * Returns a color state list associated with a particular resource ID. The 964 * resource may contain either a single raw color value or a complex 965 * {@link ColorStateList} holding multiple possible colors. 966 * 967 * @param id The desired resource identifier of a {@link ColorStateList}, 968 * as generated by the aapt tool. This integer encodes the 969 * package, type, and resource entry. The value 0 is an invalid 970 * identifier. 971 * 972 * @throws NotFoundException Throws NotFoundException if the given ID does 973 * not exist. 974 * 975 * @return A ColorStateList object containing either a single solid color 976 * or multiple colors that can be selected based on a state. 977 * @deprecated Use {@link #getColorStateList(int, Theme)} instead. 978 */ 979 @Nullable 980 @Deprecated 981 public ColorStateList getColorStateList(@ColorRes int id) throws NotFoundException { 982 final ColorStateList csl = getColorStateList(id, null); 983 if (csl != null && csl.canApplyTheme()) { 984 Log.w(TAG, "ColorStateList " + getResourceName(id) + " has " 985 + "unresolved theme attributes! Consider using " 986 + "Resources.getColorStateList(int, Theme) or " 987 + "Context.getColorStateList(int).", new RuntimeException()); 988 } 989 return csl; 990 } 991 992 /** 993 * Returns a themed color state list associated with a particular resource 994 * ID. The resource may contain either a single raw color value or a 995 * complex {@link ColorStateList} holding multiple possible colors. 996 * 997 * @param id The desired resource identifier of a {@link ColorStateList}, 998 * as generated by the aapt tool. This integer encodes the 999 * package, type, and resource entry. The value 0 is an invalid 1000 * identifier. 1001 * @param theme The theme used to style the color attributes, may be 1002 * {@code null}. 1003 * 1004 * @throws NotFoundException Throws NotFoundException if the given ID does 1005 * not exist. 1006 * 1007 * @return A themed ColorStateList object containing either a single solid 1008 * color or multiple colors that can be selected based on a state. 1009 */ 1010 @Nullable 1011 public ColorStateList getColorStateList(@ColorRes int id, @Nullable Theme theme) 1012 throws NotFoundException { 1013 final TypedValue value = obtainTempTypedValue(id); 1014 try { 1015 return loadColorStateList(value, id, theme); 1016 } finally { 1017 releaseTempTypedValue(value); 1018 } 1019 } 1020 1021 /** 1022 * Return a boolean associated with a particular resource ID. This can be 1023 * used with any integral resource value, and will return true if it is 1024 * non-zero. 1025 * 1026 * @param id The desired resource identifier, as generated by the aapt 1027 * tool. This integer encodes the package, type, and resource 1028 * entry. The value 0 is an invalid identifier. 1029 * 1030 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1031 * 1032 * @return Returns the boolean value contained in the resource. 1033 */ 1034 public boolean getBoolean(@BoolRes int id) throws NotFoundException { 1035 final TypedValue value = obtainTempTypedValue(id); 1036 try { 1037 if (value.type >= TypedValue.TYPE_FIRST_INT 1038 && value.type <= TypedValue.TYPE_LAST_INT) { 1039 return value.data != 0; 1040 } 1041 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 1042 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 1043 } finally { 1044 releaseTempTypedValue(value); 1045 } 1046 } 1047 1048 /** 1049 * Return an integer associated with a particular resource ID. 1050 * 1051 * @param id The desired resource identifier, as generated by the aapt 1052 * tool. This integer encodes the package, type, and resource 1053 * entry. The value 0 is an invalid identifier. 1054 * 1055 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1056 * 1057 * @return Returns the integer value contained in the resource. 1058 */ 1059 public int getInteger(@IntegerRes int id) throws NotFoundException { 1060 final TypedValue value = obtainTempTypedValue(id); 1061 try { 1062 if (value.type >= TypedValue.TYPE_FIRST_INT 1063 && value.type <= TypedValue.TYPE_LAST_INT) { 1064 return value.data; 1065 } 1066 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 1067 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 1068 } finally { 1069 releaseTempTypedValue(value); 1070 } 1071 } 1072 1073 /** 1074 * Retrieve a floating-point value for a particular resource ID. 1075 * 1076 * @param id The desired resource identifier, as generated by the aapt 1077 * tool. This integer encodes the package, type, and resource 1078 * entry. The value 0 is an invalid identifier. 1079 * 1080 * @return Returns the floating-point value contained in the resource. 1081 * 1082 * @throws NotFoundException Throws NotFoundException if the given ID does 1083 * not exist or is not a floating-point value. 1084 * @hide Pending API council approval. 1085 */ 1086 public float getFloat(int id) { 1087 final TypedValue value = obtainTempTypedValue(id); 1088 try { 1089 if (value.type == TypedValue.TYPE_FLOAT) { 1090 return value.getFloat(); 1091 } 1092 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 1093 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 1094 } finally { 1095 releaseTempTypedValue(value); 1096 } 1097 } 1098 1099 /** 1100 * Return an XmlResourceParser through which you can read a view layout 1101 * description for the given resource ID. This parser has limited 1102 * functionality -- in particular, you can't change its input, and only 1103 * the high-level events are available. 1104 * 1105 * <p>This function is really a simple wrapper for calling 1106 * {@link #getXml} with a layout resource. 1107 * 1108 * @param id The desired resource identifier, as generated by the aapt 1109 * tool. This integer encodes the package, type, and resource 1110 * entry. The value 0 is an invalid identifier. 1111 * 1112 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1113 * 1114 * @return A new parser object through which you can read 1115 * the XML data. 1116 * 1117 * @see #getXml 1118 */ 1119 public XmlResourceParser getLayout(@LayoutRes int id) throws NotFoundException { 1120 return loadXmlResourceParser(id, "layout"); 1121 } 1122 1123 /** 1124 * Return an XmlResourceParser through which you can read an animation 1125 * description for the given resource ID. This parser has limited 1126 * functionality -- in particular, you can't change its input, and only 1127 * the high-level events are available. 1128 * 1129 * <p>This function is really a simple wrapper for calling 1130 * {@link #getXml} with an animation resource. 1131 * 1132 * @param id The desired resource identifier, as generated by the aapt 1133 * tool. This integer encodes the package, type, and resource 1134 * entry. The value 0 is an invalid identifier. 1135 * 1136 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1137 * 1138 * @return A new parser object through which you can read 1139 * the XML data. 1140 * 1141 * @see #getXml 1142 */ 1143 public XmlResourceParser getAnimation(@AnimRes int id) throws NotFoundException { 1144 return loadXmlResourceParser(id, "anim"); 1145 } 1146 1147 /** 1148 * Return an XmlResourceParser through which you can read a generic XML 1149 * resource for the given resource ID. 1150 * 1151 * <p>The XmlPullParser implementation returned here has some limited 1152 * functionality. In particular, you can't change its input, and only 1153 * high-level parsing events are available (since the document was 1154 * pre-parsed for you at build time, which involved merging text and 1155 * stripping comments). 1156 * 1157 * @param id The desired resource identifier, as generated by the aapt 1158 * tool. This integer encodes the package, type, and resource 1159 * entry. The value 0 is an invalid identifier. 1160 * 1161 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1162 * 1163 * @return A new parser object through which you can read 1164 * the XML data. 1165 * 1166 * @see android.util.AttributeSet 1167 */ 1168 public XmlResourceParser getXml(@XmlRes int id) throws NotFoundException { 1169 return loadXmlResourceParser(id, "xml"); 1170 } 1171 1172 /** 1173 * Open a data stream for reading a raw resource. This can only be used 1174 * with resources whose value is the name of an asset files -- that is, it can be 1175 * used to open drawable, sound, and raw resources; it will fail on string 1176 * and color resources. 1177 * 1178 * @param id The resource identifier to open, as generated by the appt 1179 * tool. 1180 * 1181 * @return InputStream Access to the resource data. 1182 * 1183 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1184 * 1185 */ 1186 public InputStream openRawResource(@RawRes int id) throws NotFoundException { 1187 final TypedValue value = obtainTempTypedValue(); 1188 try { 1189 return openRawResource(id, value); 1190 } finally { 1191 releaseTempTypedValue(value); 1192 } 1193 } 1194 1195 /** 1196 * Returns a TypedValue populated with data for the specified resource ID 1197 * that's suitable for temporary use. The obtained TypedValue should be 1198 * released using {@link #releaseTempTypedValue(TypedValue)}. 1199 * 1200 * @param id the resource ID for which data should be obtained 1201 * @return a populated typed value suitable for temporary use 1202 */ 1203 private TypedValue obtainTempTypedValue(@AnyRes int id) { 1204 final TypedValue value = obtainTempTypedValue(); 1205 getValue(id, value, true); 1206 return value; 1207 } 1208 1209 /** 1210 * Returns a TypedValue suitable for temporary use. The obtained TypedValue 1211 * should be released using {@link #releaseTempTypedValue(TypedValue)}. 1212 * 1213 * @return a typed value suitable for temporary use 1214 */ 1215 private TypedValue obtainTempTypedValue() { 1216 TypedValue tmpValue = null; 1217 synchronized (mTmpValueLock) { 1218 if (mTmpValue != null) { 1219 tmpValue = mTmpValue; 1220 mTmpValue = null; 1221 } 1222 } 1223 if (tmpValue == null) { 1224 return new TypedValue(); 1225 } 1226 return tmpValue; 1227 } 1228 1229 /** 1230 * Returns a TypedValue to the pool. After calling this method, the 1231 * specified TypedValue should no longer be accessed. 1232 * 1233 * @param value the typed value to return to the pool 1234 */ 1235 private void releaseTempTypedValue(TypedValue value) { 1236 synchronized (mTmpValueLock) { 1237 if (mTmpValue == null) { 1238 mTmpValue = value; 1239 } 1240 } 1241 } 1242 1243 /** 1244 * Open a data stream for reading a raw resource. This can only be used 1245 * with resources whose value is the name of an asset file -- that is, it can be 1246 * used to open drawable, sound, and raw resources; it will fail on string 1247 * and color resources. 1248 * 1249 * @param id The resource identifier to open, as generated by the appt tool. 1250 * @param value The TypedValue object to hold the resource information. 1251 * 1252 * @return InputStream Access to the resource data. 1253 * 1254 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1255 */ 1256 public InputStream openRawResource(@RawRes int id, TypedValue value) 1257 throws NotFoundException { 1258 getValue(id, value, true); 1259 1260 try { 1261 return mAssets.openNonAsset(value.assetCookie, value.string.toString(), 1262 AssetManager.ACCESS_STREAMING); 1263 } catch (Exception e) { 1264 NotFoundException rnf = new NotFoundException("File " + value.string.toString() + 1265 " from drawable resource ID #0x" + Integer.toHexString(id)); 1266 rnf.initCause(e); 1267 throw rnf; 1268 } 1269 } 1270 1271 /** 1272 * Open a file descriptor for reading a raw resource. This can only be used 1273 * with resources whose value is the name of an asset files -- that is, it can be 1274 * used to open drawable, sound, and raw resources; it will fail on string 1275 * and color resources. 1276 * 1277 * <p>This function only works for resources that are stored in the package 1278 * as uncompressed data, which typically includes things like mp3 files 1279 * and png images. 1280 * 1281 * @param id The resource identifier to open, as generated by the appt 1282 * tool. 1283 * 1284 * @return AssetFileDescriptor A new file descriptor you can use to read 1285 * the resource. This includes the file descriptor itself, as well as the 1286 * offset and length of data where the resource appears in the file. A 1287 * null is returned if the file exists but is compressed. 1288 * 1289 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1290 * 1291 */ 1292 public AssetFileDescriptor openRawResourceFd(@RawRes int id) 1293 throws NotFoundException { 1294 final TypedValue value = obtainTempTypedValue(id); 1295 try { 1296 return mAssets.openNonAssetFd(value.assetCookie, value.string.toString()); 1297 } catch (Exception e) { 1298 throw new NotFoundException("File " + value.string.toString() + " from drawable " 1299 + "resource ID #0x" + Integer.toHexString(id), e); 1300 } finally { 1301 releaseTempTypedValue(value); 1302 } 1303 } 1304 1305 /** 1306 * Return the raw data associated with a particular resource ID. 1307 * 1308 * @param id The desired resource identifier, as generated by the aapt 1309 * tool. This integer encodes the package, type, and resource 1310 * entry. The value 0 is an invalid identifier. 1311 * @param outValue Object in which to place the resource data. 1312 * @param resolveRefs If true, a resource that is a reference to another 1313 * resource will be followed so that you receive the 1314 * actual final resource data. If false, the TypedValue 1315 * will be filled in with the reference itself. 1316 * 1317 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1318 * 1319 */ 1320 public void getValue(@AnyRes int id, TypedValue outValue, boolean resolveRefs) 1321 throws NotFoundException { 1322 boolean found = mAssets.getResourceValue(id, 0, outValue, resolveRefs); 1323 if (found) { 1324 return; 1325 } 1326 throw new NotFoundException("Resource ID #0x" 1327 + Integer.toHexString(id)); 1328 } 1329 1330 /** 1331 * Get the raw value associated with a resource with associated density. 1332 * 1333 * @param id resource identifier 1334 * @param density density in DPI 1335 * @param resolveRefs If true, a resource that is a reference to another 1336 * resource will be followed so that you receive the actual final 1337 * resource data. If false, the TypedValue will be filled in with 1338 * the reference itself. 1339 * @throws NotFoundException Throws NotFoundException if the given ID does 1340 * not exist. 1341 * @see #getValue(String, TypedValue, boolean) 1342 */ 1343 public void getValueForDensity(@AnyRes int id, int density, TypedValue outValue, 1344 boolean resolveRefs) throws NotFoundException { 1345 boolean found = mAssets.getResourceValue(id, density, outValue, resolveRefs); 1346 if (found) { 1347 return; 1348 } 1349 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id)); 1350 } 1351 1352 /** 1353 * Return the raw data associated with a particular resource ID. 1354 * See getIdentifier() for information on how names are mapped to resource 1355 * IDs, and getString(int) for information on how string resources are 1356 * retrieved. 1357 * 1358 * <p>Note: use of this function is discouraged. It is much more 1359 * efficient to retrieve resources by identifier than by name. 1360 * 1361 * @param name The name of the desired resource. This is passed to 1362 * getIdentifier() with a default type of "string". 1363 * @param outValue Object in which to place the resource data. 1364 * @param resolveRefs If true, a resource that is a reference to another 1365 * resource will be followed so that you receive the 1366 * actual final resource data. If false, the TypedValue 1367 * will be filled in with the reference itself. 1368 * 1369 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1370 * 1371 */ 1372 public void getValue(String name, TypedValue outValue, boolean resolveRefs) 1373 throws NotFoundException { 1374 int id = getIdentifier(name, "string", null); 1375 if (id != 0) { 1376 getValue(id, outValue, resolveRefs); 1377 return; 1378 } 1379 throw new NotFoundException("String resource name " + name); 1380 } 1381 1382 /** 1383 * This class holds the current attribute values for a particular theme. 1384 * In other words, a Theme is a set of values for resource attributes; 1385 * these are used in conjunction with {@link TypedArray} 1386 * to resolve the final value for an attribute. 1387 * 1388 * <p>The Theme's attributes come into play in two ways: (1) a styled 1389 * attribute can explicit reference a value in the theme through the 1390 * "?themeAttribute" syntax; (2) if no value has been defined for a 1391 * particular styled attribute, as a last resort we will try to find that 1392 * attribute's value in the Theme. 1393 * 1394 * <p>You will normally use the {@link #obtainStyledAttributes} APIs to 1395 * retrieve XML attributes with style and theme information applied. 1396 */ 1397 public final class Theme { 1398 /** 1399 * Place new attribute values into the theme. The style resource 1400 * specified by <var>resid</var> will be retrieved from this Theme's 1401 * resources, its values placed into the Theme object. 1402 * 1403 * <p>The semantics of this function depends on the <var>force</var> 1404 * argument: If false, only values that are not already defined in 1405 * the theme will be copied from the system resource; otherwise, if 1406 * any of the style's attributes are already defined in the theme, the 1407 * current values in the theme will be overwritten. 1408 * 1409 * @param resId The resource ID of a style resource from which to 1410 * obtain attribute values. 1411 * @param force If true, values in the style resource will always be 1412 * used in the theme; otherwise, they will only be used 1413 * if not already defined in the theme. 1414 */ 1415 public void applyStyle(int resId, boolean force) { 1416 synchronized (mKey) { 1417 AssetManager.applyThemeStyle(mTheme, resId, force); 1418 1419 mThemeResId = resId; 1420 mKey.append(resId, force); 1421 } 1422 } 1423 1424 /** 1425 * Set this theme to hold the same contents as the theme 1426 * <var>other</var>. If both of these themes are from the same 1427 * Resources object, they will be identical after this function 1428 * returns. If they are from different Resources, only the resources 1429 * they have in common will be set in this theme. 1430 * 1431 * @param other The existing Theme to copy from. 1432 */ 1433 public void setTo(Theme other) { 1434 synchronized (mKey) { 1435 synchronized (other.mKey) { 1436 AssetManager.copyTheme(mTheme, other.mTheme); 1437 1438 mThemeResId = other.mThemeResId; 1439 mKey.setTo(other.getKey()); 1440 } 1441 } 1442 } 1443 1444 /** 1445 * Return a TypedArray holding the values defined by 1446 * <var>Theme</var> which are listed in <var>attrs</var>. 1447 * 1448 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1449 * with the array. 1450 * 1451 * @param attrs The desired attributes. 1452 * 1453 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1454 * 1455 * @return Returns a TypedArray holding an array of the attribute values. 1456 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1457 * when done with it. 1458 * 1459 * @see Resources#obtainAttributes 1460 * @see #obtainStyledAttributes(int, int[]) 1461 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1462 */ 1463 public TypedArray obtainStyledAttributes(@StyleableRes int[] attrs) { 1464 synchronized (mKey) { 1465 final int len = attrs.length; 1466 final TypedArray array = TypedArray.obtain(Resources.this, len); 1467 array.mTheme = this; 1468 AssetManager.applyStyle(mTheme, 0, 0, 0, attrs, array.mData, array.mIndices); 1469 return array; 1470 } 1471 } 1472 1473 /** 1474 * Return a TypedArray holding the values defined by the style 1475 * resource <var>resid</var> which are listed in <var>attrs</var>. 1476 * 1477 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1478 * with the array. 1479 * 1480 * @param resId The desired style resource. 1481 * @param attrs The desired attributes in the style. 1482 * 1483 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1484 * 1485 * @return Returns a TypedArray holding an array of the attribute values. 1486 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1487 * when done with it. 1488 * 1489 * @see Resources#obtainAttributes 1490 * @see #obtainStyledAttributes(int[]) 1491 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1492 */ 1493 public TypedArray obtainStyledAttributes(@StyleRes int resId, @StyleableRes int[] attrs) 1494 throws NotFoundException { 1495 synchronized (mKey) { 1496 final int len = attrs.length; 1497 final TypedArray array = TypedArray.obtain(Resources.this, len); 1498 array.mTheme = this; 1499 AssetManager.applyStyle(mTheme, 0, resId, 0, attrs, array.mData, array.mIndices); 1500 return array; 1501 } 1502 } 1503 1504 /** 1505 * Return a TypedArray holding the attribute values in 1506 * <var>set</var> 1507 * that are listed in <var>attrs</var>. In addition, if the given 1508 * AttributeSet specifies a style class (through the "style" attribute), 1509 * that style will be applied on top of the base attributes it defines. 1510 * 1511 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1512 * with the array. 1513 * 1514 * <p>When determining the final value of a particular attribute, there 1515 * are four inputs that come into play:</p> 1516 * 1517 * <ol> 1518 * <li> Any attribute values in the given AttributeSet. 1519 * <li> The style resource specified in the AttributeSet (named 1520 * "style"). 1521 * <li> The default style specified by <var>defStyleAttr</var> and 1522 * <var>defStyleRes</var> 1523 * <li> The base values in this theme. 1524 * </ol> 1525 * 1526 * <p>Each of these inputs is considered in-order, with the first listed 1527 * taking precedence over the following ones. In other words, if in the 1528 * AttributeSet you have supplied <code><Button 1529 * textColor="#ff000000"></code>, then the button's text will 1530 * <em>always</em> be black, regardless of what is specified in any of 1531 * the styles. 1532 * 1533 * @param set The base set of attribute values. May be null. 1534 * @param attrs The desired attributes to be retrieved. 1535 * @param defStyleAttr An attribute in the current theme that contains a 1536 * reference to a style resource that supplies 1537 * defaults values for the TypedArray. Can be 1538 * 0 to not look for defaults. 1539 * @param defStyleRes A resource identifier of a style resource that 1540 * supplies default values for the TypedArray, 1541 * used only if defStyleAttr is 0 or can not be found 1542 * in the theme. Can be 0 to not look for defaults. 1543 * 1544 * @return Returns a TypedArray holding an array of the attribute values. 1545 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1546 * when done with it. 1547 * 1548 * @see Resources#obtainAttributes 1549 * @see #obtainStyledAttributes(int[]) 1550 * @see #obtainStyledAttributes(int, int[]) 1551 */ 1552 public TypedArray obtainStyledAttributes(AttributeSet set, 1553 @StyleableRes int[] attrs, @AttrRes int defStyleAttr, @StyleRes int defStyleRes) { 1554 synchronized (mKey) { 1555 final int len = attrs.length; 1556 final TypedArray array = TypedArray.obtain(Resources.this, len); 1557 1558 // XXX note that for now we only work with compiled XML files. 1559 // To support generic XML files we will need to manually parse 1560 // out the attributes from the XML file (applying type information 1561 // contained in the resources and such). 1562 final XmlBlock.Parser parser = (XmlBlock.Parser) set; 1563 AssetManager.applyStyle(mTheme, defStyleAttr, defStyleRes, 1564 parser != null ? parser.mParseState : 0, 1565 attrs, array.mData, array.mIndices); 1566 array.mTheme = this; 1567 array.mXml = parser; 1568 1569 return array; 1570 } 1571 } 1572 1573 /** 1574 * Retrieve the values for a set of attributes in the Theme. The 1575 * contents of the typed array are ultimately filled in by 1576 * {@link Resources#getValue}. 1577 * 1578 * @param values The base set of attribute values, must be equal in 1579 * length to {@code attrs}. All values must be of type 1580 * {@link TypedValue#TYPE_ATTRIBUTE}. 1581 * @param attrs The desired attributes to be retrieved. 1582 * @return Returns a TypedArray holding an array of the attribute 1583 * values. Be sure to call {@link TypedArray#recycle()} 1584 * when done with it. 1585 * @hide 1586 */ 1587 @NonNull 1588 public TypedArray resolveAttributes(@NonNull int[] values, @NonNull int[] attrs) { 1589 synchronized (mKey) { 1590 final int len = attrs.length; 1591 if (values == null || len != values.length) { 1592 throw new IllegalArgumentException( 1593 "Base attribute values must the same length as attrs"); 1594 } 1595 1596 final TypedArray array = TypedArray.obtain(Resources.this, len); 1597 AssetManager.resolveAttrs(mTheme, 0, 0, values, attrs, array.mData, array.mIndices); 1598 array.mTheme = this; 1599 array.mXml = null; 1600 1601 return array; 1602 } 1603 } 1604 1605 /** 1606 * Retrieve the value of an attribute in the Theme. The contents of 1607 * <var>outValue</var> are ultimately filled in by 1608 * {@link Resources#getValue}. 1609 * 1610 * @param resid The resource identifier of the desired theme 1611 * attribute. 1612 * @param outValue Filled in with the ultimate resource value supplied 1613 * by the attribute. 1614 * @param resolveRefs If true, resource references will be walked; if 1615 * false, <var>outValue</var> may be a 1616 * TYPE_REFERENCE. In either case, it will never 1617 * be a TYPE_ATTRIBUTE. 1618 * 1619 * @return boolean Returns true if the attribute was found and 1620 * <var>outValue</var> is valid, else false. 1621 */ 1622 public boolean resolveAttribute(int resid, TypedValue outValue, boolean resolveRefs) { 1623 synchronized (mKey) { 1624 return mAssets.getThemeValue(mTheme, resid, outValue, resolveRefs); 1625 } 1626 } 1627 1628 /** 1629 * Gets all of the attribute ids associated with this {@link Theme}. For debugging only. 1630 * 1631 * @return The int array containing attribute ids associated with this {@link Theme}. 1632 * @hide 1633 */ 1634 public int[] getAllAttributes() { 1635 return mAssets.getStyleAttributes(getAppliedStyleResId()); 1636 } 1637 1638 /** 1639 * Returns the resources to which this theme belongs. 1640 * 1641 * @return Resources to which this theme belongs. 1642 */ 1643 public Resources getResources() { 1644 return Resources.this; 1645 } 1646 1647 /** 1648 * Return a drawable object associated with a particular resource ID 1649 * and styled for the Theme. 1650 * 1651 * @param id The desired resource identifier, as generated by the aapt 1652 * tool. This integer encodes the package, type, and resource 1653 * entry. The value 0 is an invalid identifier. 1654 * @return Drawable An object that can be used to draw this resource. 1655 * @throws NotFoundException Throws NotFoundException if the given ID 1656 * does not exist. 1657 */ 1658 public Drawable getDrawable(@DrawableRes int id) throws NotFoundException { 1659 return Resources.this.getDrawable(id, this); 1660 } 1661 1662 /** 1663 * Returns a bit mask of configuration changes that will impact this 1664 * theme (and thus require completely reloading it). 1665 * 1666 * @return a bit mask of configuration changes, as defined by 1667 * {@link ActivityInfo} 1668 * @see ActivityInfo 1669 */ 1670 public int getChangingConfigurations() { 1671 synchronized (mKey) { 1672 final int nativeChangingConfig = 1673 AssetManager.getThemeChangingConfigurations(mTheme); 1674 return ActivityInfo.activityInfoConfigNativeToJava(nativeChangingConfig); 1675 } 1676 } 1677 1678 /** 1679 * Print contents of this theme out to the log. For debugging only. 1680 * 1681 * @param priority The log priority to use. 1682 * @param tag The log tag to use. 1683 * @param prefix Text to prefix each line printed. 1684 */ 1685 public void dump(int priority, String tag, String prefix) { 1686 synchronized (mKey) { 1687 AssetManager.dumpTheme(mTheme, priority, tag, prefix); 1688 } 1689 } 1690 1691 @Override 1692 protected void finalize() throws Throwable { 1693 super.finalize(); 1694 mAssets.releaseTheme(mTheme); 1695 } 1696 1697 /*package*/ Theme() { 1698 mAssets = Resources.this.mAssets; 1699 mTheme = mAssets.createTheme(); 1700 } 1701 1702 /** Unique key for the series of styles applied to this theme. */ 1703 private final ThemeKey mKey = new ThemeKey(); 1704 1705 @SuppressWarnings("hiding") 1706 private final AssetManager mAssets; 1707 private final long mTheme; 1708 1709 /** Resource identifier for the theme. */ 1710 private int mThemeResId = 0; 1711 1712 // Needed by layoutlib. 1713 /*package*/ long getNativeTheme() { 1714 return mTheme; 1715 } 1716 1717 /*package*/ int getAppliedStyleResId() { 1718 return mThemeResId; 1719 } 1720 1721 /*package*/ ThemeKey getKey() { 1722 return mKey; 1723 } 1724 1725 private String getResourceNameFromHexString(String hexString) { 1726 return getResourceName(Integer.parseInt(hexString, 16)); 1727 } 1728 1729 /** 1730 * Parses {@link #mKey} and returns a String array that holds pairs of 1731 * adjacent Theme data: resource name followed by whether or not it was 1732 * forced, as specified by {@link #applyStyle(int, boolean)}. 1733 * 1734 * @hide 1735 */ 1736 @ViewDebug.ExportedProperty(category = "theme", hasAdjacentMapping = true) 1737 public String[] getTheme() { 1738 synchronized (mKey) { 1739 final int N = mKey.mCount; 1740 final String[] themes = new String[N * 2]; 1741 for (int i = 0, j = N - 1; i < themes.length; i += 2, --j) { 1742 final int resId = mKey.mResId[j]; 1743 final boolean forced = mKey.mForce[j]; 1744 try { 1745 themes[i] = getResourceName(resId); 1746 } catch (NotFoundException e) { 1747 themes[i] = Integer.toHexString(i); 1748 } 1749 themes[i + 1] = forced ? "forced" : "not forced"; 1750 } 1751 return themes; 1752 } 1753 } 1754 1755 /** @hide */ 1756 public void encode(@NonNull ViewHierarchyEncoder encoder) { 1757 encoder.beginObject(this); 1758 final String[] properties = getTheme(); 1759 for (int i = 0; i < properties.length; i += 2) { 1760 encoder.addProperty(properties[i], properties[i+1]); 1761 } 1762 encoder.endObject(); 1763 } 1764 1765 /** 1766 * Rebases the theme against the parent Resource object's current 1767 * configuration by re-applying the styles passed to 1768 * {@link #applyStyle(int, boolean)}. 1769 * 1770 * @hide 1771 */ 1772 public void rebase() { 1773 synchronized (mKey) { 1774 AssetManager.clearTheme(mTheme); 1775 1776 // Reapply the same styles in the same order. 1777 for (int i = 0; i < mKey.mCount; i++) { 1778 final int resId = mKey.mResId[i]; 1779 final boolean force = mKey.mForce[i]; 1780 AssetManager.applyThemeStyle(mTheme, resId, force); 1781 } 1782 } 1783 } 1784 } 1785 1786 static class ThemeKey implements Cloneable { 1787 int[] mResId; 1788 boolean[] mForce; 1789 int mCount; 1790 1791 private int mHashCode = 0; 1792 1793 public void append(int resId, boolean force) { 1794 if (mResId == null) { 1795 mResId = new int[4]; 1796 } 1797 1798 if (mForce == null) { 1799 mForce = new boolean[4]; 1800 } 1801 1802 mResId = GrowingArrayUtils.append(mResId, mCount, resId); 1803 mForce = GrowingArrayUtils.append(mForce, mCount, force); 1804 mCount++; 1805 1806 mHashCode = 31 * (31 * mHashCode + resId) + (force ? 1 : 0); 1807 } 1808 1809 /** 1810 * Sets up this key as a deep copy of another key. 1811 * 1812 * @param other the key to deep copy into this key 1813 */ 1814 public void setTo(ThemeKey other) { 1815 mResId = other.mResId == null ? null : other.mResId.clone(); 1816 mForce = other.mForce == null ? null : other.mForce.clone(); 1817 mCount = other.mCount; 1818 } 1819 1820 @Override 1821 public int hashCode() { 1822 return mHashCode; 1823 } 1824 1825 @Override 1826 public boolean equals(Object o) { 1827 if (this == o) { 1828 return true; 1829 } 1830 1831 if (o == null || getClass() != o.getClass() || hashCode() != o.hashCode()) { 1832 return false; 1833 } 1834 1835 final ThemeKey t = (ThemeKey) o; 1836 if (mCount != t.mCount) { 1837 return false; 1838 } 1839 1840 final int N = mCount; 1841 for (int i = 0; i < N; i++) { 1842 if (mResId[i] != t.mResId[i] || mForce[i] != t.mForce[i]) { 1843 return false; 1844 } 1845 } 1846 1847 return true; 1848 } 1849 1850 /** 1851 * @return a shallow copy of this key 1852 */ 1853 @Override 1854 public ThemeKey clone() { 1855 final ThemeKey other = new ThemeKey(); 1856 other.mResId = mResId; 1857 other.mForce = mForce; 1858 other.mCount = mCount; 1859 other.mHashCode = mHashCode; 1860 return other; 1861 } 1862 } 1863 1864 /** 1865 * Generate a new Theme object for this set of Resources. It initially 1866 * starts out empty. 1867 * 1868 * @return Theme The newly created Theme container. 1869 */ 1870 public final Theme newTheme() { 1871 return new Theme(); 1872 } 1873 1874 /** 1875 * Retrieve a set of basic attribute values from an AttributeSet, not 1876 * performing styling of them using a theme and/or style resources. 1877 * 1878 * @param set The current attribute values to retrieve. 1879 * @param attrs The specific attributes to be retrieved. 1880 * @return Returns a TypedArray holding an array of the attribute values. 1881 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1882 * when done with it. 1883 * 1884 * @see Theme#obtainStyledAttributes(AttributeSet, int[], int, int) 1885 */ 1886 public TypedArray obtainAttributes(AttributeSet set, int[] attrs) { 1887 int len = attrs.length; 1888 TypedArray array = TypedArray.obtain(this, len); 1889 1890 // XXX note that for now we only work with compiled XML files. 1891 // To support generic XML files we will need to manually parse 1892 // out the attributes from the XML file (applying type information 1893 // contained in the resources and such). 1894 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1895 mAssets.retrieveAttributes(parser.mParseState, attrs, 1896 array.mData, array.mIndices); 1897 1898 array.mXml = parser; 1899 1900 return array; 1901 } 1902 1903 /** 1904 * Store the newly updated configuration. 1905 */ 1906 public void updateConfiguration(Configuration config, 1907 DisplayMetrics metrics) { 1908 updateConfiguration(config, metrics, null); 1909 } 1910 1911 /** 1912 * @hide 1913 */ 1914 public void updateConfiguration(Configuration config, 1915 DisplayMetrics metrics, CompatibilityInfo compat) { 1916 synchronized (mAccessLock) { 1917 if (false) { 1918 Slog.i(TAG, "**** Updating config of " + this + ": old config is " 1919 + mConfiguration + " old compat is " + mCompatibilityInfo); 1920 Slog.i(TAG, "**** Updating config of " + this + ": new config is " 1921 + config + " new compat is " + compat); 1922 } 1923 if (compat != null) { 1924 mCompatibilityInfo = compat; 1925 } 1926 if (metrics != null) { 1927 mMetrics.setTo(metrics); 1928 } 1929 // NOTE: We should re-arrange this code to create a Display 1930 // with the CompatibilityInfo that is used everywhere we deal 1931 // with the display in relation to this app, rather than 1932 // doing the conversion here. This impl should be okay because 1933 // we make sure to return a compatible display in the places 1934 // where there are public APIs to retrieve the display... but 1935 // it would be cleaner and more maintainble to just be 1936 // consistently dealing with a compatible display everywhere in 1937 // the framework. 1938 mCompatibilityInfo.applyToDisplayMetrics(mMetrics); 1939 1940 final int configChanges = calcConfigChanges(config); 1941 1942 LocaleList locales = mConfiguration.getLocales(); 1943 if (locales.isEmpty()) { 1944 locales = LocaleList.getAdjustedDefault(); 1945 mConfiguration.setLocales(locales); 1946 } 1947 if (mConfiguration.densityDpi != Configuration.DENSITY_DPI_UNDEFINED) { 1948 mMetrics.densityDpi = mConfiguration.densityDpi; 1949 mMetrics.density = mConfiguration.densityDpi * DisplayMetrics.DENSITY_DEFAULT_SCALE; 1950 } 1951 mMetrics.scaledDensity = mMetrics.density * mConfiguration.fontScale; 1952 1953 final int width, height; 1954 if (mMetrics.widthPixels >= mMetrics.heightPixels) { 1955 width = mMetrics.widthPixels; 1956 height = mMetrics.heightPixels; 1957 } else { 1958 //noinspection SuspiciousNameCombination 1959 width = mMetrics.heightPixels; 1960 //noinspection SuspiciousNameCombination 1961 height = mMetrics.widthPixels; 1962 } 1963 1964 final int keyboardHidden; 1965 if (mConfiguration.keyboardHidden == Configuration.KEYBOARDHIDDEN_NO 1966 && mConfiguration.hardKeyboardHidden == Configuration.HARDKEYBOARDHIDDEN_YES) { 1967 keyboardHidden = Configuration.KEYBOARDHIDDEN_SOFT; 1968 } else { 1969 keyboardHidden = mConfiguration.keyboardHidden; 1970 } 1971 1972 mAssets.setConfiguration(mConfiguration.mcc, mConfiguration.mnc, 1973 adjustLanguageTag(locales.getPrimary().toLanguageTag()), 1974 mConfiguration.orientation, 1975 mConfiguration.touchscreen, 1976 mConfiguration.densityDpi, mConfiguration.keyboard, 1977 keyboardHidden, mConfiguration.navigation, width, height, 1978 mConfiguration.smallestScreenWidthDp, 1979 mConfiguration.screenWidthDp, mConfiguration.screenHeightDp, 1980 mConfiguration.screenLayout, mConfiguration.uiMode, 1981 Build.VERSION.RESOURCES_SDK_INT); 1982 1983 if (DEBUG_CONFIG) { 1984 Slog.i(TAG, "**** Updating config of " + this + ": final config is " 1985 + mConfiguration + " final compat is " + mCompatibilityInfo); 1986 } 1987 1988 mDrawableCache.onConfigurationChange(configChanges); 1989 mColorDrawableCache.onConfigurationChange(configChanges); 1990 mColorStateListCache.onConfigurationChange(configChanges); 1991 mAnimatorCache.onConfigurationChange(configChanges); 1992 mStateListAnimatorCache.onConfigurationChange(configChanges); 1993 1994 flushLayoutCache(); 1995 } 1996 synchronized (sSync) { 1997 if (mPluralRule != null) { 1998 mPluralRule = PluralRules.forLocale(mConfiguration.getLocales().getPrimary()); 1999 } 2000 } 2001 } 2002 2003 /** 2004 * Called by ConfigurationBoundResourceCacheTest via reflection. 2005 */ 2006 private int calcConfigChanges(Configuration config) { 2007 int configChanges = 0xfffffff; 2008 if (config != null) { 2009 mTmpConfig.setTo(config); 2010 int density = config.densityDpi; 2011 if (density == Configuration.DENSITY_DPI_UNDEFINED) { 2012 density = mMetrics.noncompatDensityDpi; 2013 } 2014 2015 mCompatibilityInfo.applyToConfiguration(density, mTmpConfig); 2016 2017 if (mTmpConfig.getLocales().isEmpty()) { 2018 mTmpConfig.setLocales(LocaleList.getDefault()); 2019 } 2020 configChanges = mConfiguration.updateFrom(mTmpConfig); 2021 configChanges = ActivityInfo.activityInfoConfigToNative(configChanges); 2022 } 2023 return configChanges; 2024 } 2025 2026 /** 2027 * {@code Locale.toLanguageTag} will transform the obsolete (and deprecated) 2028 * language codes "in", "ji" and "iw" to "id", "yi" and "he" respectively. 2029 * 2030 * All released versions of android prior to "L" used the deprecated language 2031 * tags, so we will need to support them for backwards compatibility. 2032 * 2033 * Note that this conversion needs to take place *after* the call to 2034 * {@code toLanguageTag} because that will convert all the deprecated codes to 2035 * the new ones, even if they're set manually. 2036 */ 2037 private static String adjustLanguageTag(String languageTag) { 2038 final int separator = languageTag.indexOf('-'); 2039 final String language; 2040 final String remainder; 2041 2042 if (separator == -1) { 2043 language = languageTag; 2044 remainder = ""; 2045 } else { 2046 language = languageTag.substring(0, separator); 2047 remainder = languageTag.substring(separator); 2048 } 2049 2050 return Locale.adjustLanguageCode(language) + remainder; 2051 } 2052 2053 /** 2054 * Update the system resources configuration if they have previously 2055 * been initialized. 2056 * 2057 * @hide 2058 */ 2059 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics, 2060 CompatibilityInfo compat) { 2061 if (mSystem != null) { 2062 mSystem.updateConfiguration(config, metrics, compat); 2063 //Log.i(TAG, "Updated system resources " + mSystem 2064 // + ": " + mSystem.getConfiguration()); 2065 } 2066 } 2067 2068 /** 2069 * Return the current display metrics that are in effect for this resource 2070 * object. The returned object should be treated as read-only. 2071 * 2072 * @return The resource's current display metrics. 2073 */ 2074 public DisplayMetrics getDisplayMetrics() { 2075 if (DEBUG_CONFIG) Slog.v(TAG, "Returning DisplayMetrics: " + mMetrics.widthPixels 2076 + "x" + mMetrics.heightPixels + " " + mMetrics.density); 2077 return mMetrics; 2078 } 2079 2080 /** 2081 * Return the current configuration that is in effect for this resource 2082 * object. The returned object should be treated as read-only. 2083 * 2084 * @return The resource's current configuration. 2085 */ 2086 public Configuration getConfiguration() { 2087 return mConfiguration; 2088 } 2089 2090 /** @hide */ 2091 public Configuration[] getSizeConfigurations() { 2092 return mAssets.getSizeConfigurations(); 2093 }; 2094 2095 /** 2096 * Return the compatibility mode information for the application. 2097 * The returned object should be treated as read-only. 2098 * 2099 * @return compatibility info. 2100 * @hide 2101 */ 2102 public CompatibilityInfo getCompatibilityInfo() { 2103 return mCompatibilityInfo; 2104 } 2105 2106 /** 2107 * This is just for testing. 2108 * @hide 2109 */ 2110 public void setCompatibilityInfo(CompatibilityInfo ci) { 2111 if (ci != null) { 2112 mCompatibilityInfo = ci; 2113 updateConfiguration(mConfiguration, mMetrics); 2114 } 2115 } 2116 2117 /** 2118 * Return a resource identifier for the given resource name. A fully 2119 * qualified resource name is of the form "package:type/entry". The first 2120 * two components (package and type) are optional if defType and 2121 * defPackage, respectively, are specified here. 2122 * 2123 * <p>Note: use of this function is discouraged. It is much more 2124 * efficient to retrieve resources by identifier than by name. 2125 * 2126 * @param name The name of the desired resource. 2127 * @param defType Optional default resource type to find, if "type/" is 2128 * not included in the name. Can be null to require an 2129 * explicit type. 2130 * @param defPackage Optional default package to find, if "package:" is 2131 * not included in the name. Can be null to require an 2132 * explicit package. 2133 * 2134 * @return int The associated resource identifier. Returns 0 if no such 2135 * resource was found. (0 is not a valid resource ID.) 2136 */ 2137 public int getIdentifier(String name, String defType, String defPackage) { 2138 if (name == null) { 2139 throw new NullPointerException("name is null"); 2140 } 2141 try { 2142 return Integer.parseInt(name); 2143 } catch (Exception e) { 2144 // Ignore 2145 } 2146 return mAssets.getResourceIdentifier(name, defType, defPackage); 2147 } 2148 2149 /** 2150 * Return true if given resource identifier includes a package. 2151 * 2152 * @hide 2153 */ 2154 public static boolean resourceHasPackage(@AnyRes int resid) { 2155 return (resid >>> 24) != 0; 2156 } 2157 2158 /** 2159 * Return the full name for a given resource identifier. This name is 2160 * a single string of the form "package:type/entry". 2161 * 2162 * @param resid The resource identifier whose name is to be retrieved. 2163 * 2164 * @return A string holding the name of the resource. 2165 * 2166 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2167 * 2168 * @see #getResourcePackageName 2169 * @see #getResourceTypeName 2170 * @see #getResourceEntryName 2171 */ 2172 public String getResourceName(@AnyRes int resid) throws NotFoundException { 2173 String str = mAssets.getResourceName(resid); 2174 if (str != null) return str; 2175 throw new NotFoundException("Unable to find resource ID #0x" 2176 + Integer.toHexString(resid)); 2177 } 2178 2179 /** 2180 * Return the package name for a given resource identifier. 2181 * 2182 * @param resid The resource identifier whose package name is to be 2183 * retrieved. 2184 * 2185 * @return A string holding the package name of the resource. 2186 * 2187 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2188 * 2189 * @see #getResourceName 2190 */ 2191 public String getResourcePackageName(@AnyRes int resid) throws NotFoundException { 2192 String str = mAssets.getResourcePackageName(resid); 2193 if (str != null) return str; 2194 throw new NotFoundException("Unable to find resource ID #0x" 2195 + Integer.toHexString(resid)); 2196 } 2197 2198 /** 2199 * Return the type name for a given resource identifier. 2200 * 2201 * @param resid The resource identifier whose type name is to be 2202 * retrieved. 2203 * 2204 * @return A string holding the type name of the resource. 2205 * 2206 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2207 * 2208 * @see #getResourceName 2209 */ 2210 public String getResourceTypeName(@AnyRes int resid) throws NotFoundException { 2211 String str = mAssets.getResourceTypeName(resid); 2212 if (str != null) return str; 2213 throw new NotFoundException("Unable to find resource ID #0x" 2214 + Integer.toHexString(resid)); 2215 } 2216 2217 /** 2218 * Return the entry name for a given resource identifier. 2219 * 2220 * @param resid The resource identifier whose entry name is to be 2221 * retrieved. 2222 * 2223 * @return A string holding the entry name of the resource. 2224 * 2225 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2226 * 2227 * @see #getResourceName 2228 */ 2229 public String getResourceEntryName(@AnyRes int resid) throws NotFoundException { 2230 String str = mAssets.getResourceEntryName(resid); 2231 if (str != null) return str; 2232 throw new NotFoundException("Unable to find resource ID #0x" 2233 + Integer.toHexString(resid)); 2234 } 2235 2236 /** 2237 * Parse a series of {@link android.R.styleable#Extra <extra>} tags from 2238 * an XML file. You call this when you are at the parent tag of the 2239 * extra tags, and it will return once all of the child tags have been parsed. 2240 * This will call {@link #parseBundleExtra} for each extra tag encountered. 2241 * 2242 * @param parser The parser from which to retrieve the extras. 2243 * @param outBundle A Bundle in which to place all parsed extras. 2244 * @throws XmlPullParserException 2245 * @throws IOException 2246 */ 2247 public void parseBundleExtras(XmlResourceParser parser, Bundle outBundle) 2248 throws XmlPullParserException, IOException { 2249 int outerDepth = parser.getDepth(); 2250 int type; 2251 while ((type=parser.next()) != XmlPullParser.END_DOCUMENT 2252 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 2253 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 2254 continue; 2255 } 2256 2257 String nodeName = parser.getName(); 2258 if (nodeName.equals("extra")) { 2259 parseBundleExtra("extra", parser, outBundle); 2260 XmlUtils.skipCurrentTag(parser); 2261 2262 } else { 2263 XmlUtils.skipCurrentTag(parser); 2264 } 2265 } 2266 } 2267 2268 /** 2269 * Parse a name/value pair out of an XML tag holding that data. The 2270 * AttributeSet must be holding the data defined by 2271 * {@link android.R.styleable#Extra}. The following value types are supported: 2272 * <ul> 2273 * <li> {@link TypedValue#TYPE_STRING}: 2274 * {@link Bundle#putCharSequence Bundle.putCharSequence()} 2275 * <li> {@link TypedValue#TYPE_INT_BOOLEAN}: 2276 * {@link Bundle#putCharSequence Bundle.putBoolean()} 2277 * <li> {@link TypedValue#TYPE_FIRST_INT}-{@link TypedValue#TYPE_LAST_INT}: 2278 * {@link Bundle#putCharSequence Bundle.putBoolean()} 2279 * <li> {@link TypedValue#TYPE_FLOAT}: 2280 * {@link Bundle#putCharSequence Bundle.putFloat()} 2281 * </ul> 2282 * 2283 * @param tagName The name of the tag these attributes come from; this is 2284 * only used for reporting error messages. 2285 * @param attrs The attributes from which to retrieve the name/value pair. 2286 * @param outBundle The Bundle in which to place the parsed value. 2287 * @throws XmlPullParserException If the attributes are not valid. 2288 */ 2289 public void parseBundleExtra(String tagName, AttributeSet attrs, 2290 Bundle outBundle) throws XmlPullParserException { 2291 TypedArray sa = obtainAttributes(attrs, 2292 com.android.internal.R.styleable.Extra); 2293 2294 String name = sa.getString( 2295 com.android.internal.R.styleable.Extra_name); 2296 if (name == null) { 2297 sa.recycle(); 2298 throw new XmlPullParserException("<" + tagName 2299 + "> requires an android:name attribute at " 2300 + attrs.getPositionDescription()); 2301 } 2302 2303 TypedValue v = sa.peekValue( 2304 com.android.internal.R.styleable.Extra_value); 2305 if (v != null) { 2306 if (v.type == TypedValue.TYPE_STRING) { 2307 CharSequence cs = v.coerceToString(); 2308 outBundle.putCharSequence(name, cs); 2309 } else if (v.type == TypedValue.TYPE_INT_BOOLEAN) { 2310 outBundle.putBoolean(name, v.data != 0); 2311 } else if (v.type >= TypedValue.TYPE_FIRST_INT 2312 && v.type <= TypedValue.TYPE_LAST_INT) { 2313 outBundle.putInt(name, v.data); 2314 } else if (v.type == TypedValue.TYPE_FLOAT) { 2315 outBundle.putFloat(name, v.getFloat()); 2316 } else { 2317 sa.recycle(); 2318 throw new XmlPullParserException("<" + tagName 2319 + "> only supports string, integer, float, color, and boolean at " 2320 + attrs.getPositionDescription()); 2321 } 2322 } else { 2323 sa.recycle(); 2324 throw new XmlPullParserException("<" + tagName 2325 + "> requires an android:value or android:resource attribute at " 2326 + attrs.getPositionDescription()); 2327 } 2328 2329 sa.recycle(); 2330 } 2331 2332 /** 2333 * Retrieve underlying AssetManager storage for these resources. 2334 */ 2335 public final AssetManager getAssets() { 2336 return mAssets; 2337 } 2338 2339 /** 2340 * Call this to remove all cached loaded layout resources from the 2341 * Resources object. Only intended for use with performance testing 2342 * tools. 2343 */ 2344 public final void flushLayoutCache() { 2345 final String[] cachedXmlBlockFiles = mCachedXmlBlockFiles; 2346 final XmlBlock[] cachedXmlBlocks = mCachedXmlBlocks; 2347 synchronized (cachedXmlBlockFiles) { 2348 final int num = cachedXmlBlockFiles.length; 2349 for (int i = 0; i < num; i++) { 2350 final XmlBlock oldBlock = cachedXmlBlocks[i]; 2351 if (oldBlock != null) { 2352 oldBlock.close(); 2353 } 2354 cachedXmlBlockFiles[i] = null; 2355 cachedXmlBlocks[i] = null; 2356 } 2357 } 2358 } 2359 2360 /** 2361 * Start preloading of resource data using this Resources object. Only 2362 * for use by the zygote process for loading common system resources. 2363 * {@hide} 2364 */ 2365 public final void startPreloading() { 2366 synchronized (sSync) { 2367 if (sPreloaded) { 2368 throw new IllegalStateException("Resources already preloaded"); 2369 } 2370 sPreloaded = true; 2371 mPreloading = true; 2372 mConfiguration.densityDpi = DisplayMetrics.DENSITY_DEVICE; 2373 updateConfiguration(null, null); 2374 } 2375 } 2376 2377 /** 2378 * Called by zygote when it is done preloading resources, to change back 2379 * to normal Resources operation. 2380 */ 2381 public final void finishPreloading() { 2382 if (mPreloading) { 2383 mPreloading = false; 2384 flushLayoutCache(); 2385 } 2386 } 2387 2388 /** 2389 * @hide 2390 */ 2391 public LongSparseArray<ConstantState> getPreloadedDrawables() { 2392 return sPreloadedDrawables[0]; 2393 } 2394 2395 private boolean verifyPreloadConfig(int changingConfigurations, int allowVarying, 2396 int resourceId, String name) { 2397 // We allow preloading of resources even if they vary by font scale (which 2398 // doesn't impact resource selection) or density (which we handle specially by 2399 // simply turning off all preloading), as well as any other configs specified 2400 // by the caller. 2401 if (((changingConfigurations&~(ActivityInfo.CONFIG_FONT_SCALE | 2402 ActivityInfo.CONFIG_DENSITY)) & ~allowVarying) != 0) { 2403 String resName; 2404 try { 2405 resName = getResourceName(resourceId); 2406 } catch (NotFoundException e) { 2407 resName = "?"; 2408 } 2409 // This should never happen in production, so we should log a 2410 // warning even if we're not debugging. 2411 Log.w(TAG, "Preloaded " + name + " resource #0x" 2412 + Integer.toHexString(resourceId) 2413 + " (" + resName + ") that varies with configuration!!"); 2414 return false; 2415 } 2416 if (TRACE_FOR_PRELOAD) { 2417 String resName; 2418 try { 2419 resName = getResourceName(resourceId); 2420 } catch (NotFoundException e) { 2421 resName = "?"; 2422 } 2423 Log.w(TAG, "Preloading " + name + " resource #0x" 2424 + Integer.toHexString(resourceId) 2425 + " (" + resName + ")"); 2426 } 2427 return true; 2428 } 2429 2430 @Nullable 2431 Drawable loadDrawable(TypedValue value, int id, Theme theme) throws NotFoundException { 2432 return loadDrawable(value, id, theme, true); 2433 } 2434 2435 @Nullable 2436 Drawable loadDrawable(TypedValue value, int id, Theme theme, boolean useCache) 2437 throws NotFoundException { 2438 try { 2439 if (TRACE_FOR_PRELOAD) { 2440 // Log only framework resources 2441 if ((id >>> 24) == 0x1) { 2442 final String name = getResourceName(id); 2443 if (name != null) { 2444 Log.d("PreloadDrawable", name); 2445 } 2446 } 2447 } 2448 2449 final boolean isColorDrawable; 2450 final DrawableCache caches; 2451 final long key; 2452 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT 2453 && value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2454 isColorDrawable = true; 2455 caches = mColorDrawableCache; 2456 key = value.data; 2457 } else { 2458 isColorDrawable = false; 2459 caches = mDrawableCache; 2460 key = (((long) value.assetCookie) << 32) | value.data; 2461 } 2462 2463 // First, check whether we have a cached version of this drawable 2464 // that was inflated against the specified theme. Skip the cache if 2465 // we're currently preloading or we're not using the cache. 2466 if (!mPreloading && useCache) { 2467 final Drawable cachedDrawable = caches.getInstance(key, theme); 2468 if (cachedDrawable != null) { 2469 return cachedDrawable; 2470 } 2471 } 2472 2473 // Next, check preloaded drawables. Preloaded drawables may contain 2474 // unresolved theme attributes. 2475 final ConstantState cs; 2476 if (isColorDrawable) { 2477 cs = sPreloadedColorDrawables.get(key); 2478 } else { 2479 cs = sPreloadedDrawables[mConfiguration.getLayoutDirection()].get(key); 2480 } 2481 2482 Drawable dr; 2483 if (cs != null) { 2484 dr = cs.newDrawable(this); 2485 } else if (isColorDrawable) { 2486 dr = new ColorDrawable(value.data); 2487 } else { 2488 dr = loadDrawableForCookie(value, id, null); 2489 } 2490 2491 // Determine if the drawable has unresolved theme attributes. If it 2492 // does, we'll need to apply a theme and store it in a theme-specific 2493 // cache. 2494 final boolean canApplyTheme = dr != null && dr.canApplyTheme(); 2495 if (canApplyTheme && theme != null) { 2496 dr = dr.mutate(); 2497 dr.applyTheme(theme); 2498 dr.clearMutated(); 2499 } 2500 2501 // If we were able to obtain a drawable, store it in the appropriate 2502 // cache: preload, not themed, null theme, or theme-specific. Don't 2503 // pollute the cache with drawables loaded from a foreign density. 2504 if (dr != null && useCache) { 2505 dr.setChangingConfigurations(value.changingConfigurations); 2506 cacheDrawable(value, isColorDrawable, caches, theme, canApplyTheme, key, dr); 2507 } 2508 2509 return dr; 2510 } catch (Exception e) { 2511 String name; 2512 try { 2513 name = getResourceName(id); 2514 } catch (NotFoundException e2) { 2515 name = "(missing name)"; 2516 } 2517 2518 // The target drawable might fail to load for any number of 2519 // reasons, but we always want to include the resource name. 2520 // Since the client already expects this method to throw a 2521 // NotFoundException, just throw one of those. 2522 final NotFoundException nfe = new NotFoundException("Drawable " + name 2523 + " with resource ID #0x" + Integer.toHexString(id), e); 2524 nfe.setStackTrace(new StackTraceElement[0]); 2525 throw nfe; 2526 } 2527 } 2528 2529 private void cacheDrawable(TypedValue value, boolean isColorDrawable, DrawableCache caches, 2530 Theme theme, boolean usesTheme, long key, Drawable dr) { 2531 final ConstantState cs = dr.getConstantState(); 2532 if (cs == null) { 2533 return; 2534 } 2535 2536 if (mPreloading) { 2537 final int changingConfigs = cs.getChangingConfigurations(); 2538 if (isColorDrawable) { 2539 if (verifyPreloadConfig(changingConfigs, 0, value.resourceId, "drawable")) { 2540 sPreloadedColorDrawables.put(key, cs); 2541 } 2542 } else { 2543 if (verifyPreloadConfig( 2544 changingConfigs, LAYOUT_DIR_CONFIG, value.resourceId, "drawable")) { 2545 if ((changingConfigs & LAYOUT_DIR_CONFIG) == 0) { 2546 // If this resource does not vary based on layout direction, 2547 // we can put it in all of the preload maps. 2548 sPreloadedDrawables[0].put(key, cs); 2549 sPreloadedDrawables[1].put(key, cs); 2550 } else { 2551 // Otherwise, only in the layout dir we loaded it for. 2552 sPreloadedDrawables[mConfiguration.getLayoutDirection()].put(key, cs); 2553 } 2554 } 2555 } 2556 } else { 2557 synchronized (mAccessLock) { 2558 caches.put(key, theme, cs, usesTheme); 2559 } 2560 } 2561 } 2562 2563 /** 2564 * Loads a drawable from XML or resources stream. 2565 */ 2566 private Drawable loadDrawableForCookie(TypedValue value, int id, Theme theme) { 2567 if (value.string == null) { 2568 throw new NotFoundException("Resource \"" + getResourceName(id) + "\" (" 2569 + Integer.toHexString(id) + ") is not a Drawable (color or path): " + value); 2570 } 2571 2572 final String file = value.string.toString(); 2573 2574 if (TRACE_FOR_MISS_PRELOAD) { 2575 // Log only framework resources 2576 if ((id >>> 24) == 0x1) { 2577 final String name = getResourceName(id); 2578 if (name != null) { 2579 Log.d(TAG, "Loading framework drawable #" + Integer.toHexString(id) 2580 + ": " + name + " at " + file); 2581 } 2582 } 2583 } 2584 2585 if (DEBUG_LOAD) { 2586 Log.v(TAG, "Loading drawable for cookie " + value.assetCookie + ": " + file); 2587 } 2588 2589 final Drawable dr; 2590 2591 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 2592 try { 2593 if (file.endsWith(".xml")) { 2594 final XmlResourceParser rp = loadXmlResourceParser( 2595 file, id, value.assetCookie, "drawable"); 2596 dr = Drawable.createFromXml(this, rp, theme); 2597 rp.close(); 2598 } else { 2599 final InputStream is = mAssets.openNonAsset( 2600 value.assetCookie, file, AssetManager.ACCESS_STREAMING); 2601 dr = Drawable.createFromResourceStream(this, value, is, file, null); 2602 is.close(); 2603 } 2604 } catch (Exception e) { 2605 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2606 final NotFoundException rnf = new NotFoundException( 2607 "File " + file + " from drawable resource ID #0x" + Integer.toHexString(id)); 2608 rnf.initCause(e); 2609 throw rnf; 2610 } 2611 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2612 2613 return dr; 2614 } 2615 2616 @Nullable 2617 ColorStateList loadColorStateList(TypedValue value, int id, Theme theme) 2618 throws NotFoundException { 2619 if (TRACE_FOR_PRELOAD) { 2620 // Log only framework resources 2621 if ((id >>> 24) == 0x1) { 2622 final String name = getResourceName(id); 2623 if (name != null) android.util.Log.d("PreloadColorStateList", name); 2624 } 2625 } 2626 2627 final long key = (((long) value.assetCookie) << 32) | value.data; 2628 2629 ColorStateList csl; 2630 2631 // Handle inline color definitions. 2632 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT 2633 && value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2634 final android.content.res.ConstantState<ColorStateList> factory = 2635 sPreloadedColorStateLists.get(key); 2636 if (factory != null) { 2637 return factory.newInstance(); 2638 } 2639 2640 csl = ColorStateList.valueOf(value.data); 2641 2642 if (mPreloading) { 2643 if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId, 2644 "color")) { 2645 sPreloadedColorStateLists.put(key, csl.getConstantState()); 2646 } 2647 } 2648 2649 return csl; 2650 } 2651 2652 final ConfigurationBoundResourceCache<ColorStateList> cache = mColorStateListCache; 2653 csl = cache.getInstance(key, theme); 2654 if (csl != null) { 2655 return csl; 2656 } 2657 2658 final android.content.res.ConstantState<ColorStateList> factory = 2659 sPreloadedColorStateLists.get(key); 2660 if (factory != null) { 2661 csl = factory.newInstance(this, theme); 2662 } 2663 2664 if (csl == null) { 2665 csl = loadColorStateListForCookie(value, id, theme); 2666 } 2667 2668 if (csl != null) { 2669 if (mPreloading) { 2670 if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId, 2671 "color")) { 2672 sPreloadedColorStateLists.put(key, csl.getConstantState()); 2673 } 2674 } else { 2675 cache.put(key, theme, csl.getConstantState()); 2676 } 2677 } 2678 2679 return csl; 2680 } 2681 2682 private ColorStateList loadColorStateListForCookie(TypedValue value, int id, Theme theme) { 2683 if (value.string == null) { 2684 throw new UnsupportedOperationException( 2685 "Can't convert to color state list: type=0x" + value.type); 2686 } 2687 2688 final String file = value.string.toString(); 2689 2690 if (TRACE_FOR_MISS_PRELOAD) { 2691 // Log only framework resources 2692 if ((id >>> 24) == 0x1) { 2693 final String name = getResourceName(id); 2694 if (name != null) { 2695 Log.d(TAG, "Loading framework color state list #" + Integer.toHexString(id) 2696 + ": " + name + " at " + file); 2697 } 2698 } 2699 } 2700 2701 if (DEBUG_LOAD) { 2702 Log.v(TAG, "Loading color state list for cookie " + value.assetCookie + ": " + file); 2703 } 2704 2705 final ColorStateList csl; 2706 2707 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 2708 if (file.endsWith(".xml")) { 2709 try { 2710 final XmlResourceParser rp = loadXmlResourceParser( 2711 file, id, value.assetCookie, "colorstatelist"); 2712 csl = ColorStateList.createFromXml(this, rp, theme); 2713 rp.close(); 2714 } catch (Exception e) { 2715 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2716 final NotFoundException rnf = new NotFoundException( 2717 "File " + file + " from color state list resource ID #0x" 2718 + Integer.toHexString(id)); 2719 rnf.initCause(e); 2720 throw rnf; 2721 } 2722 } else { 2723 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2724 throw new NotFoundException( 2725 "File " + file + " from drawable resource ID #0x" 2726 + Integer.toHexString(id) + ": .xml extension required"); 2727 } 2728 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2729 2730 return csl; 2731 } 2732 2733 /** 2734 * Loads an XML parser for the specified file. 2735 * 2736 * @param id the resource identifier for the file 2737 * @param type the type of resource (used for logging) 2738 * @return a parser for the specified XML file 2739 * @throws NotFoundException if the file could not be loaded 2740 */ 2741 @NonNull 2742 XmlResourceParser loadXmlResourceParser(@AnyRes int id, @NonNull String type) 2743 throws NotFoundException { 2744 final TypedValue value = obtainTempTypedValue(id); 2745 try { 2746 if (value.type == TypedValue.TYPE_STRING) { 2747 return loadXmlResourceParser(value.string.toString(), id, 2748 value.assetCookie, type); 2749 } 2750 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) 2751 + " type #0x" + Integer.toHexString(value.type) + " is not valid"); 2752 } finally { 2753 releaseTempTypedValue(value); 2754 } 2755 } 2756 2757 /** 2758 * Loads an XML parser for the specified file. 2759 * 2760 * @param file the path for the XML file to parse 2761 * @param id the resource identifier for the file 2762 * @param assetCookie the asset cookie for the file 2763 * @param type the type of resource (used for logging) 2764 * @return a parser for the specified XML file 2765 * @throws NotFoundException if the file could not be loaded 2766 */ 2767 @NonNull 2768 XmlResourceParser loadXmlResourceParser(@NonNull String file, @AnyRes int id, 2769 int assetCookie, @NonNull String type) throws NotFoundException { 2770 if (id != 0) { 2771 try { 2772 final String[] cachedXmlBlockFiles = mCachedXmlBlockFiles; 2773 final XmlBlock[] cachedXmlBlocks = mCachedXmlBlocks; 2774 synchronized (cachedXmlBlockFiles) { 2775 // First see if this block is in our cache. 2776 final int num = cachedXmlBlockFiles.length; 2777 for (int i = 0; i < num; i++) { 2778 if (cachedXmlBlockFiles[i] != null 2779 && cachedXmlBlockFiles[i].equals(file)) { 2780 return cachedXmlBlocks[i].newParser(); 2781 } 2782 } 2783 2784 // Not in the cache, create a new block and put it at 2785 // the next slot in the cache. 2786 final XmlBlock block = mAssets.openXmlBlockAsset(assetCookie, file); 2787 if (block != null) { 2788 final int pos = (mLastCachedXmlBlockIndex + 1) % num; 2789 mLastCachedXmlBlockIndex = pos; 2790 final XmlBlock oldBlock = cachedXmlBlocks[pos]; 2791 if (oldBlock != null) { 2792 oldBlock.close(); 2793 } 2794 cachedXmlBlockFiles[pos] = file; 2795 cachedXmlBlocks[pos] = block; 2796 return block.newParser(); 2797 } 2798 } 2799 } catch (Exception e) { 2800 final NotFoundException rnf = new NotFoundException("File " + file 2801 + " from xml type " + type + " resource ID #0x" + Integer.toHexString(id)); 2802 rnf.initCause(e); 2803 throw rnf; 2804 } 2805 } 2806 2807 throw new NotFoundException("File " + file + " from xml type " + type + " resource ID #0x" 2808 + Integer.toHexString(id)); 2809 } 2810 2811 /** 2812 * Obtains styled attributes from the theme, if available, or unstyled 2813 * resources if the theme is null. 2814 * 2815 * @hide 2816 */ 2817 public static TypedArray obtainAttributes( 2818 Resources res, Theme theme, AttributeSet set, int[] attrs) { 2819 if (theme == null) { 2820 return res.obtainAttributes(set, attrs); 2821 } 2822 return theme.obtainStyledAttributes(set, attrs, 0, 0); 2823 } 2824 2825 private Resources() { 2826 mAssets = AssetManager.getSystem(); 2827 mClassLoader = ClassLoader.getSystemClassLoader(); 2828 // NOTE: Intentionally leaving this uninitialized (all values set 2829 // to zero), so that anyone who tries to do something that requires 2830 // metrics will get a very wrong value. 2831 mConfiguration.setToDefaults(); 2832 mMetrics.setToDefaults(); 2833 updateConfiguration(null, null); 2834 mAssets.ensureStringBlocks(); 2835 } 2836} 2837