Resources.java revision 863ba4c4bfdf1e1f701ec85c078aa80ba4d67e83
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.content.res; 18 19import android.annotation.AttrRes; 20import android.annotation.ColorInt; 21import android.annotation.StyleRes; 22import android.annotation.StyleableRes; 23import com.android.internal.util.XmlUtils; 24 25import org.xmlpull.v1.XmlPullParser; 26import org.xmlpull.v1.XmlPullParserException; 27 28import android.animation.Animator; 29import android.animation.StateListAnimator; 30import android.annotation.AnimRes; 31import android.annotation.AnyRes; 32import android.annotation.ArrayRes; 33import android.annotation.BoolRes; 34import android.annotation.ColorRes; 35import android.annotation.DimenRes; 36import android.annotation.DrawableRes; 37import android.annotation.FractionRes; 38import android.annotation.IntegerRes; 39import android.annotation.LayoutRes; 40import android.annotation.NonNull; 41import android.annotation.Nullable; 42import android.annotation.PluralsRes; 43import android.annotation.RawRes; 44import android.annotation.StringRes; 45import android.annotation.XmlRes; 46import android.content.pm.ActivityInfo; 47import android.graphics.Movie; 48import android.graphics.drawable.ColorDrawable; 49import android.graphics.drawable.Drawable; 50import android.graphics.drawable.Drawable.ConstantState; 51import android.os.Build; 52import android.os.Bundle; 53import android.os.Trace; 54import android.util.ArrayMap; 55import android.util.AttributeSet; 56import android.util.DisplayMetrics; 57import android.util.Log; 58import android.util.LongSparseArray; 59import android.util.Pools.SynchronizedPool; 60import android.util.Slog; 61import android.util.TypedValue; 62import android.view.ViewDebug; 63 64import java.io.IOException; 65import java.io.InputStream; 66import java.lang.ref.WeakReference; 67import java.util.Locale; 68 69import libcore.icu.NativePluralRules; 70 71/** 72 * Class for accessing an application's resources. This sits on top of the 73 * asset manager of the application (accessible through {@link #getAssets}) and 74 * provides a high-level API for getting typed data from the assets. 75 * 76 * <p>The Android resource system keeps track of all non-code assets associated with an 77 * application. You can use this class to access your application's resources. You can generally 78 * acquire the {@link android.content.res.Resources} instance associated with your application 79 * with {@link android.content.Context#getResources getResources()}.</p> 80 * 81 * <p>The Android SDK tools compile your application's resources into the application binary 82 * at build time. To use a resource, you must install it correctly in the source tree (inside 83 * your project's {@code res/} directory) and build your application. As part of the build 84 * process, the SDK tools generate symbols for each resource, which you can use in your application 85 * code to access the resources.</p> 86 * 87 * <p>Using application resources makes it easy to update various characteristics of your 88 * application without modifying code, and—by providing sets of alternative 89 * resources—enables you to optimize your application for a variety of device configurations 90 * (such as for different languages and screen sizes). This is an important aspect of developing 91 * Android applications that are compatible on different types of devices.</p> 92 * 93 * <p>For more information about using resources, see the documentation about <a 94 * href="{@docRoot}guide/topics/resources/index.html">Application Resources</a>.</p> 95 */ 96public class Resources { 97 static final String TAG = "Resources"; 98 99 private static final boolean DEBUG_LOAD = false; 100 private static final boolean DEBUG_CONFIG = false; 101 private static final boolean TRACE_FOR_PRELOAD = false; 102 private static final boolean TRACE_FOR_MISS_PRELOAD = false; 103 104 private static final int LAYOUT_DIR_CONFIG = ActivityInfo.activityInfoConfigToNative( 105 ActivityInfo.CONFIG_LAYOUT_DIRECTION); 106 107 private static final int ID_OTHER = 0x01000004; 108 109 private static final Object sSync = new Object(); 110 111 // Information about preloaded resources. Note that they are not 112 // protected by a lock, because while preloading in zygote we are all 113 // single-threaded, and after that these are immutable. 114 private static final LongSparseArray<ConstantState>[] sPreloadedDrawables; 115 private static final LongSparseArray<ConstantState> sPreloadedColorDrawables 116 = new LongSparseArray<>(); 117 private static final LongSparseArray<android.content.res.ConstantState<ColorStateList>> 118 sPreloadedColorStateLists = new LongSparseArray<>(); 119 120 private static final String CACHE_NOT_THEMED = ""; 121 private static final String CACHE_NULL_THEME = "null_theme"; 122 123 // Pool of TypedArrays targeted to this Resources object. 124 final SynchronizedPool<TypedArray> mTypedArrayPool = new SynchronizedPool<>(5); 125 126 // Used by BridgeResources in layoutlib 127 static Resources mSystem = null; 128 129 private static boolean sPreloaded; 130 private static int sPreloadedDensity; 131 132 // These are protected by mAccessLock. 133 private final Object mAccessLock = new Object(); 134 private final Configuration mTmpConfig = new Configuration(); 135 private final ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> mDrawableCache = 136 new ArrayMap<>(); 137 private final ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> mColorDrawableCache = 138 new ArrayMap<>(); 139 private final ConfigurationBoundResourceCache<ColorStateList> mColorStateListCache = 140 new ConfigurationBoundResourceCache<>(this); 141 private final ConfigurationBoundResourceCache<Animator> mAnimatorCache = 142 new ConfigurationBoundResourceCache<>(this); 143 private final ConfigurationBoundResourceCache<StateListAnimator> mStateListAnimatorCache = 144 new ConfigurationBoundResourceCache<>(this); 145 146 private TypedValue mTmpValue = new TypedValue(); 147 private boolean mPreloading; 148 149 private int mLastCachedXmlBlockIndex = -1; 150 private final int[] mCachedXmlBlockIds = { 0, 0, 0, 0 }; 151 private final XmlBlock[] mCachedXmlBlocks = new XmlBlock[4]; 152 153 final AssetManager mAssets; 154 final DisplayMetrics mMetrics = new DisplayMetrics(); 155 156 private final Configuration mConfiguration = new Configuration(); 157 private NativePluralRules mPluralRule; 158 159 private CompatibilityInfo mCompatibilityInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 160 161 static { 162 sPreloadedDrawables = new LongSparseArray[2]; 163 sPreloadedDrawables[0] = new LongSparseArray<>(); 164 sPreloadedDrawables[1] = new LongSparseArray<>(); 165 } 166 167 /** 168 * Returns the most appropriate default theme for the specified target SDK version. 169 * <ul> 170 * <li>Below API 11: Gingerbread 171 * <li>APIs 11 thru 14: Holo 172 * <li>APIs 14 thru XX: Device default dark 173 * <li>API XX and above: Device default light with dark action bar 174 * </ul> 175 * 176 * @param curTheme The current theme, or 0 if not specified. 177 * @param targetSdkVersion The target SDK version. 178 * @return A theme resource identifier 179 * @hide 180 */ 181 public static int selectDefaultTheme(int curTheme, int targetSdkVersion) { 182 return selectSystemTheme(curTheme, targetSdkVersion, 183 com.android.internal.R.style.Theme, 184 com.android.internal.R.style.Theme_Holo, 185 com.android.internal.R.style.Theme_DeviceDefault, 186 com.android.internal.R.style.Theme_DeviceDefault_Light_DarkActionBar); 187 } 188 189 /** @hide */ 190 public static int selectSystemTheme(int curTheme, int targetSdkVersion, int orig, int holo, 191 int dark, int deviceDefault) { 192 if (curTheme != 0) { 193 return curTheme; 194 } 195 if (targetSdkVersion < Build.VERSION_CODES.HONEYCOMB) { 196 return orig; 197 } 198 if (targetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 199 return holo; 200 } 201 if (targetSdkVersion < Build.VERSION_CODES.CUR_DEVELOPMENT) { 202 return dark; 203 } 204 return deviceDefault; 205 } 206 207 /** 208 * Used by AnimatorInflater. 209 * 210 * @hide 211 */ 212 public ConfigurationBoundResourceCache<Animator> getAnimatorCache() { 213 return mAnimatorCache; 214 } 215 216 /** 217 * Used by AnimatorInflater. 218 * 219 * @hide 220 */ 221 public ConfigurationBoundResourceCache<StateListAnimator> getStateListAnimatorCache() { 222 return mStateListAnimatorCache; 223 } 224 225 /** 226 * This exception is thrown by the resource APIs when a requested resource 227 * can not be found. 228 */ 229 public static class NotFoundException extends RuntimeException { 230 public NotFoundException() { 231 } 232 233 public NotFoundException(String name) { 234 super(name); 235 } 236 } 237 238 /** 239 * Create a new Resources object on top of an existing set of assets in an 240 * AssetManager. 241 * 242 * @param assets Previously created AssetManager. 243 * @param metrics Current display metrics to consider when 244 * selecting/computing resource values. 245 * @param config Desired device configuration to consider when 246 * selecting/computing resource values (optional). 247 */ 248 public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config) { 249 this(assets, metrics, config, CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO); 250 } 251 252 /** 253 * Creates a new Resources object with CompatibilityInfo. 254 * 255 * @param assets Previously created AssetManager. 256 * @param metrics Current display metrics to consider when 257 * selecting/computing resource values. 258 * @param config Desired device configuration to consider when 259 * selecting/computing resource values (optional). 260 * @param compatInfo this resource's compatibility info. Must not be null. 261 * @hide 262 */ 263 public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config, 264 CompatibilityInfo compatInfo) { 265 mAssets = assets; 266 mMetrics.setToDefaults(); 267 if (compatInfo != null) { 268 mCompatibilityInfo = compatInfo; 269 } 270 updateConfiguration(config, metrics); 271 assets.ensureStringBlocks(); 272 } 273 274 /** 275 * Return a global shared Resources object that provides access to only 276 * system resources (no application resources), and is not configured for 277 * the current screen (can not use dimension units, does not change based 278 * on orientation, etc). 279 */ 280 public static Resources getSystem() { 281 synchronized (sSync) { 282 Resources ret = mSystem; 283 if (ret == null) { 284 ret = new Resources(); 285 mSystem = ret; 286 } 287 288 return ret; 289 } 290 } 291 292 /** 293 * Return the string value associated with a particular resource ID. The 294 * returned object will be a String if this is a plain string; it will be 295 * some other type of CharSequence if it is styled. 296 * {@more} 297 * 298 * @param id The desired resource identifier, as generated by the aapt 299 * tool. This integer encodes the package, type, and resource 300 * entry. The value 0 is an invalid identifier. 301 * 302 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 303 * 304 * @return CharSequence The string data associated with the resource, plus 305 * possibly styled text information. 306 */ 307 public CharSequence getText(@StringRes int id) throws NotFoundException { 308 CharSequence res = mAssets.getResourceText(id); 309 if (res != null) { 310 return res; 311 } 312 throw new NotFoundException("String resource ID #0x" 313 + Integer.toHexString(id)); 314 } 315 316 /** 317 * Returns the character sequence necessary for grammatically correct pluralization 318 * of the given resource ID for the given quantity. 319 * Note that the character sequence is selected based solely on grammatical necessity, 320 * and that such rules differ between languages. Do not assume you know which string 321 * will be returned for a given quantity. See 322 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 323 * for more detail. 324 * 325 * @param id The desired resource identifier, as generated by the aapt 326 * tool. This integer encodes the package, type, and resource 327 * entry. The value 0 is an invalid identifier. 328 * @param quantity The number used to get the correct string for the current language's 329 * plural rules. 330 * 331 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 332 * 333 * @return CharSequence The string data associated with the resource, plus 334 * possibly styled text information. 335 */ 336 public CharSequence getQuantityText(@PluralsRes int id, int quantity) 337 throws NotFoundException { 338 NativePluralRules rule = getPluralRule(); 339 CharSequence res = mAssets.getResourceBagText(id, 340 attrForQuantityCode(rule.quantityForInt(quantity))); 341 if (res != null) { 342 return res; 343 } 344 res = mAssets.getResourceBagText(id, ID_OTHER); 345 if (res != null) { 346 return res; 347 } 348 throw new NotFoundException("Plural resource ID #0x" + Integer.toHexString(id) 349 + " quantity=" + quantity 350 + " item=" + stringForQuantityCode(rule.quantityForInt(quantity))); 351 } 352 353 private NativePluralRules getPluralRule() { 354 synchronized (sSync) { 355 if (mPluralRule == null) { 356 mPluralRule = NativePluralRules.forLocale(mConfiguration.locale); 357 } 358 return mPluralRule; 359 } 360 } 361 362 private static int attrForQuantityCode(int quantityCode) { 363 switch (quantityCode) { 364 case NativePluralRules.ZERO: return 0x01000005; 365 case NativePluralRules.ONE: return 0x01000006; 366 case NativePluralRules.TWO: return 0x01000007; 367 case NativePluralRules.FEW: return 0x01000008; 368 case NativePluralRules.MANY: return 0x01000009; 369 default: return ID_OTHER; 370 } 371 } 372 373 private static String stringForQuantityCode(int quantityCode) { 374 switch (quantityCode) { 375 case NativePluralRules.ZERO: return "zero"; 376 case NativePluralRules.ONE: return "one"; 377 case NativePluralRules.TWO: return "two"; 378 case NativePluralRules.FEW: return "few"; 379 case NativePluralRules.MANY: return "many"; 380 default: return "other"; 381 } 382 } 383 384 /** 385 * Return the string value associated with a particular resource ID. It 386 * will be stripped of any styled text information. 387 * {@more} 388 * 389 * @param id The desired resource identifier, as generated by the aapt 390 * tool. This integer encodes the package, type, and resource 391 * entry. The value 0 is an invalid identifier. 392 * 393 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 394 * 395 * @return String The string data associated with the resource, 396 * stripped of styled text information. 397 */ 398 public String getString(@StringRes int id) throws NotFoundException { 399 CharSequence res = getText(id); 400 if (res != null) { 401 return res.toString(); 402 } 403 throw new NotFoundException("String resource ID #0x" 404 + Integer.toHexString(id)); 405 } 406 407 408 /** 409 * Return the string value associated with a particular resource ID, 410 * substituting the format arguments as defined in {@link java.util.Formatter} 411 * and {@link java.lang.String#format}. It will be stripped of any styled text 412 * information. 413 * {@more} 414 * 415 * @param id The desired resource identifier, as generated by the aapt 416 * tool. This integer encodes the package, type, and resource 417 * entry. The value 0 is an invalid identifier. 418 * 419 * @param formatArgs The format arguments that will be used for substitution. 420 * 421 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 422 * 423 * @return String The string data associated with the resource, 424 * stripped of styled text information. 425 */ 426 public String getString(@StringRes int id, Object... formatArgs) 427 throws NotFoundException { 428 String raw = getString(id); 429 return String.format(mConfiguration.locale, raw, formatArgs); 430 } 431 432 /** 433 * Formats the string necessary for grammatically correct pluralization 434 * of the given resource ID for the given quantity, using the given arguments. 435 * Note that the string is selected based solely on grammatical necessity, 436 * and that such rules differ between languages. Do not assume you know which string 437 * will be returned for a given quantity. See 438 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 439 * for more detail. 440 * 441 * <p>Substitution of format arguments works as if using 442 * {@link java.util.Formatter} and {@link java.lang.String#format}. 443 * The resulting string will be stripped of any styled text information. 444 * 445 * @param id The desired resource identifier, as generated by the aapt 446 * tool. This integer encodes the package, type, and resource 447 * entry. The value 0 is an invalid identifier. 448 * @param quantity The number used to get the correct string for the current language's 449 * plural rules. 450 * @param formatArgs The format arguments that will be used for substitution. 451 * 452 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 453 * 454 * @return String The string data associated with the resource, 455 * stripped of styled text information. 456 */ 457 public String getQuantityString(@PluralsRes int id, int quantity, Object... formatArgs) 458 throws NotFoundException { 459 String raw = getQuantityText(id, quantity).toString(); 460 return String.format(mConfiguration.locale, raw, formatArgs); 461 } 462 463 /** 464 * Returns the string necessary for grammatically correct pluralization 465 * of the given resource ID for the given quantity. 466 * Note that the string is selected based solely on grammatical necessity, 467 * and that such rules differ between languages. Do not assume you know which string 468 * will be returned for a given quantity. See 469 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 470 * for more detail. 471 * 472 * @param id The desired resource identifier, as generated by the aapt 473 * tool. This integer encodes the package, type, and resource 474 * entry. The value 0 is an invalid identifier. 475 * @param quantity The number used to get the correct string for the current language's 476 * plural rules. 477 * 478 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 479 * 480 * @return String The string data associated with the resource, 481 * stripped of styled text information. 482 */ 483 public String getQuantityString(@PluralsRes int id, int quantity) 484 throws NotFoundException { 485 return getQuantityText(id, quantity).toString(); 486 } 487 488 /** 489 * Return the string value associated with a particular resource ID. The 490 * returned object will be a String if this is a plain string; it will be 491 * some other type of CharSequence if it is styled. 492 * 493 * @param id The desired resource identifier, as generated by the aapt 494 * tool. This integer encodes the package, type, and resource 495 * entry. The value 0 is an invalid identifier. 496 * 497 * @param def The default CharSequence to return. 498 * 499 * @return CharSequence The string data associated with the resource, plus 500 * possibly styled text information, or def if id is 0 or not found. 501 */ 502 public CharSequence getText(@StringRes int id, CharSequence def) { 503 CharSequence res = id != 0 ? mAssets.getResourceText(id) : null; 504 return res != null ? res : def; 505 } 506 507 /** 508 * Return the styled text array associated with a particular resource ID. 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 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 515 * 516 * @return The styled text array associated with the resource. 517 */ 518 public CharSequence[] getTextArray(@ArrayRes int id) throws NotFoundException { 519 CharSequence[] res = mAssets.getResourceTextArray(id); 520 if (res != null) { 521 return res; 522 } 523 throw new NotFoundException("Text array resource ID #0x" 524 + Integer.toHexString(id)); 525 } 526 527 /** 528 * Return the string array associated with a particular resource ID. 529 * 530 * @param id The desired resource identifier, as generated by the aapt 531 * tool. This integer encodes the package, type, and resource 532 * entry. The value 0 is an invalid identifier. 533 * 534 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 535 * 536 * @return The string array associated with the resource. 537 */ 538 public String[] getStringArray(@ArrayRes int id) 539 throws NotFoundException { 540 String[] res = mAssets.getResourceStringArray(id); 541 if (res != null) { 542 return res; 543 } 544 throw new NotFoundException("String array resource ID #0x" 545 + Integer.toHexString(id)); 546 } 547 548 /** 549 * Return the int array associated with a particular resource ID. 550 * 551 * @param id The desired resource identifier, as generated by the aapt 552 * tool. This integer encodes the package, type, and resource 553 * entry. The value 0 is an invalid identifier. 554 * 555 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 556 * 557 * @return The int array associated with the resource. 558 */ 559 public int[] getIntArray(@ArrayRes int id) throws NotFoundException { 560 int[] res = mAssets.getArrayIntResource(id); 561 if (res != null) { 562 return res; 563 } 564 throw new NotFoundException("Int array resource ID #0x" 565 + Integer.toHexString(id)); 566 } 567 568 /** 569 * Return an array of heterogeneous values. 570 * 571 * @param id The desired resource identifier, as generated by the aapt 572 * tool. This integer encodes the package, type, and resource 573 * entry. The value 0 is an invalid identifier. 574 * 575 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 576 * 577 * @return Returns a TypedArray holding an array of the array values. 578 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 579 * when done with it. 580 */ 581 public TypedArray obtainTypedArray(@ArrayRes int id) 582 throws NotFoundException { 583 int len = mAssets.getArraySize(id); 584 if (len < 0) { 585 throw new NotFoundException("Array resource ID #0x" 586 + Integer.toHexString(id)); 587 } 588 589 TypedArray array = TypedArray.obtain(this, len); 590 array.mLength = mAssets.retrieveArray(id, array.mData); 591 array.mIndices[0] = 0; 592 593 return array; 594 } 595 596 /** 597 * Retrieve a dimensional for a particular resource ID. Unit 598 * conversions are based on the current {@link DisplayMetrics} associated 599 * with the resources. 600 * 601 * @param id The desired resource identifier, as generated by the aapt 602 * tool. This integer encodes the package, type, and resource 603 * entry. The value 0 is an invalid identifier. 604 * 605 * @return Resource dimension value multiplied by the appropriate 606 * metric. 607 * 608 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 609 * 610 * @see #getDimensionPixelOffset 611 * @see #getDimensionPixelSize 612 */ 613 public float getDimension(@DimenRes int id) throws NotFoundException { 614 synchronized (mAccessLock) { 615 TypedValue value = mTmpValue; 616 if (value == null) { 617 mTmpValue = value = new TypedValue(); 618 } 619 getValue(id, value, true); 620 if (value.type == TypedValue.TYPE_DIMENSION) { 621 return TypedValue.complexToDimension(value.data, mMetrics); 622 } 623 throw new NotFoundException( 624 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 625 + Integer.toHexString(value.type) + " is not valid"); 626 } 627 } 628 629 /** 630 * Retrieve a dimensional for a particular resource ID for use 631 * as an offset in raw pixels. This is the same as 632 * {@link #getDimension}, except the returned value is converted to 633 * integer pixels for you. An offset conversion involves simply 634 * truncating the base value to an integer. 635 * 636 * @param id The desired resource identifier, as generated by the aapt 637 * tool. This integer encodes the package, type, and resource 638 * entry. The value 0 is an invalid identifier. 639 * 640 * @return Resource dimension value multiplied by the appropriate 641 * metric and truncated to integer pixels. 642 * 643 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 644 * 645 * @see #getDimension 646 * @see #getDimensionPixelSize 647 */ 648 public int getDimensionPixelOffset(@DimenRes int id) throws NotFoundException { 649 synchronized (mAccessLock) { 650 TypedValue value = mTmpValue; 651 if (value == null) { 652 mTmpValue = value = new TypedValue(); 653 } 654 getValue(id, value, true); 655 if (value.type == TypedValue.TYPE_DIMENSION) { 656 return TypedValue.complexToDimensionPixelOffset( 657 value.data, mMetrics); 658 } 659 throw new NotFoundException( 660 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 661 + Integer.toHexString(value.type) + " is not valid"); 662 } 663 } 664 665 /** 666 * Retrieve a dimensional for a particular resource ID for use 667 * as a size in raw pixels. This is the same as 668 * {@link #getDimension}, except the returned value is converted to 669 * integer pixels for use as a size. A size conversion involves 670 * rounding the base value, and ensuring that a non-zero base value 671 * is at least one pixel in size. 672 * 673 * @param id The desired resource identifier, as generated by the aapt 674 * tool. This integer encodes the package, type, and resource 675 * entry. The value 0 is an invalid identifier. 676 * 677 * @return Resource dimension value multiplied by the appropriate 678 * metric and truncated to integer pixels. 679 * 680 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 681 * 682 * @see #getDimension 683 * @see #getDimensionPixelOffset 684 */ 685 public int getDimensionPixelSize(@DimenRes int id) throws NotFoundException { 686 synchronized (mAccessLock) { 687 TypedValue value = mTmpValue; 688 if (value == null) { 689 mTmpValue = value = new TypedValue(); 690 } 691 getValue(id, value, true); 692 if (value.type == TypedValue.TYPE_DIMENSION) { 693 return TypedValue.complexToDimensionPixelSize( 694 value.data, mMetrics); 695 } 696 throw new NotFoundException( 697 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 698 + Integer.toHexString(value.type) + " is not valid"); 699 } 700 } 701 702 /** 703 * Retrieve a fractional unit for a particular resource ID. 704 * 705 * @param id The desired resource identifier, as generated by the aapt 706 * tool. This integer encodes the package, type, and resource 707 * entry. The value 0 is an invalid identifier. 708 * @param base The base value of this fraction. In other words, a 709 * standard fraction is multiplied by this value. 710 * @param pbase The parent base value of this fraction. In other 711 * words, a parent fraction (nn%p) is multiplied by this 712 * value. 713 * 714 * @return Attribute fractional value multiplied by the appropriate 715 * base value. 716 * 717 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 718 */ 719 public float getFraction(@FractionRes int id, int base, int pbase) { 720 synchronized (mAccessLock) { 721 TypedValue value = mTmpValue; 722 if (value == null) { 723 mTmpValue = value = new TypedValue(); 724 } 725 getValue(id, value, true); 726 if (value.type == TypedValue.TYPE_FRACTION) { 727 return TypedValue.complexToFraction(value.data, base, pbase); 728 } 729 throw new NotFoundException( 730 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 731 + Integer.toHexString(value.type) + " is not valid"); 732 } 733 } 734 735 /** 736 * Return a drawable object associated with a particular resource ID. 737 * Various types of objects will be returned depending on the underlying 738 * resource -- for example, a solid color, PNG image, scalable image, etc. 739 * The Drawable API hides these implementation details. 740 * 741 * <p class="note"><strong>Note:</strong> Prior to 742 * {@link android.os.Build.VERSION_CODES#JELLY_BEAN}, this function 743 * would not correctly retrieve the final configuration density when 744 * the resource ID passed here is an alias to another Drawable resource. 745 * This means that if the density configuration of the alias resource 746 * is different than the actual resource, the density of the returned 747 * Drawable would be incorrect, resulting in bad scaling. To work 748 * around this, you can instead retrieve the Drawable through 749 * {@link TypedArray#getDrawable TypedArray.getDrawable}. Use 750 * {@link android.content.Context#obtainStyledAttributes(int[]) 751 * Context.obtainStyledAttributes} with 752 * an array containing the resource ID of interest to create the TypedArray.</p> 753 * 754 * <p class="note"><strong>Note:</strong> To obtain a themed drawable, use 755 * {@link android.content.Context#getDrawable(int) Context.getDrawable(int)} 756 * or {@link #getDrawable(int, Theme)} passing the desired theme.</p> 757 * 758 * @param id The desired resource identifier, as generated by the aapt 759 * tool. This integer encodes the package, type, and resource 760 * entry. The value 0 is an invalid identifier. 761 * @return Drawable An object that can be used to draw this resource. 762 * @throws NotFoundException Throws NotFoundException if the given ID does 763 * not exist. 764 * @see #getDrawable(int, Theme) 765 * @deprecated Use {@link #getDrawable(int, Theme)} instead. 766 */ 767 @Deprecated 768 @Nullable 769 public Drawable getDrawable(@DrawableRes int id) throws NotFoundException { 770 final Drawable d = getDrawable(id, null); 771 if (d != null && d.canApplyTheme()) { 772 Log.w(TAG, "Drawable " + getResourceName(id) + " has unresolved theme " 773 + "attributes! Consider using Resources.getDrawable(int, Theme) or " 774 + "Context.getDrawable(int).", new RuntimeException()); 775 } 776 return d; 777 } 778 779 /** 780 * Return a drawable object associated with a particular resource ID and 781 * styled for the specified theme. Various types of objects will be 782 * returned depending on the underlying resource -- for example, a solid 783 * color, PNG image, scalable image, etc. 784 * 785 * @param id The desired resource identifier, as generated by the aapt 786 * tool. This integer encodes the package, type, and resource 787 * entry. The value 0 is an invalid identifier. 788 * @param theme The theme used to style the drawable attributes, may be {@code null}. 789 * @return Drawable An object that can be used to draw this resource. 790 * @throws NotFoundException Throws NotFoundException if the given ID does 791 * not exist. 792 */ 793 @Nullable 794 public Drawable getDrawable(@DrawableRes int id, @Nullable Theme theme) throws NotFoundException { 795 TypedValue value; 796 synchronized (mAccessLock) { 797 value = mTmpValue; 798 if (value == null) { 799 value = new TypedValue(); 800 } else { 801 mTmpValue = null; 802 } 803 getValue(id, value, true); 804 } 805 final Drawable res = loadDrawable(value, id, theme); 806 synchronized (mAccessLock) { 807 if (mTmpValue == null) { 808 mTmpValue = value; 809 } 810 } 811 return res; 812 } 813 814 /** 815 * Return a drawable object associated with a particular resource ID for the 816 * given screen density in DPI. This will set the drawable's density to be 817 * the device's density multiplied by the ratio of actual drawable density 818 * to requested density. This allows the drawable to be scaled up to the 819 * correct size if needed. Various types of objects will be returned 820 * depending on the underlying resource -- for example, a solid color, PNG 821 * image, scalable image, etc. The Drawable API hides these implementation 822 * details. 823 * 824 * <p class="note"><strong>Note:</strong> To obtain a themed drawable, use 825 * {@link android.content.Context#getDrawable(int) Context.getDrawable(int)} 826 * or {@link #getDrawableForDensity(int, int, Theme)} passing the desired 827 * theme.</p> 828 * 829 * @param id The desired resource identifier, as generated by the aapt tool. 830 * This integer encodes the package, type, and resource entry. 831 * The value 0 is an invalid identifier. 832 * @param density the desired screen density indicated by the resource as 833 * found in {@link DisplayMetrics}. 834 * @return Drawable An object that can be used to draw this resource. 835 * @throws NotFoundException Throws NotFoundException if the given ID does 836 * not exist. 837 * @see #getDrawableForDensity(int, int, Theme) 838 * @deprecated Use {@link #getDrawableForDensity(int, int, Theme)} instead. 839 */ 840 @Deprecated 841 @Nullable 842 public Drawable getDrawableForDensity(@DrawableRes int id, int density) throws NotFoundException { 843 return getDrawableForDensity(id, density, null); 844 } 845 846 /** 847 * Return a drawable object associated with a particular resource ID for the 848 * given screen density in DPI and styled for the specified theme. 849 * 850 * @param id The desired resource identifier, as generated by the aapt tool. 851 * This integer encodes the package, type, and resource entry. 852 * The value 0 is an invalid identifier. 853 * @param density The desired screen density indicated by the resource as 854 * found in {@link DisplayMetrics}. 855 * @param theme The theme used to style the drawable attributes, may be {@code null}. 856 * @return Drawable An object that can be used to draw this resource. 857 * @throws NotFoundException Throws NotFoundException if the given ID does 858 * not exist. 859 */ 860 @Nullable 861 public Drawable getDrawableForDensity(@DrawableRes int id, int density, @Nullable Theme theme) { 862 TypedValue value; 863 synchronized (mAccessLock) { 864 value = mTmpValue; 865 if (value == null) { 866 value = new TypedValue(); 867 } else { 868 mTmpValue = null; 869 } 870 getValueForDensity(id, density, value, true); 871 872 /* 873 * Pretend the requested density is actually the display density. If 874 * the drawable returned is not the requested density, then force it 875 * to be scaled later by dividing its density by the ratio of 876 * requested density to actual device density. Drawables that have 877 * undefined density or no density don't need to be handled here. 878 */ 879 if (value.density > 0 && value.density != TypedValue.DENSITY_NONE) { 880 if (value.density == density) { 881 value.density = mMetrics.densityDpi; 882 } else { 883 value.density = (value.density * mMetrics.densityDpi) / density; 884 } 885 } 886 } 887 888 final Drawable res = loadDrawable(value, id, theme); 889 synchronized (mAccessLock) { 890 if (mTmpValue == null) { 891 mTmpValue = value; 892 } 893 } 894 return res; 895 } 896 897 /** 898 * Return a movie object associated with the particular resource ID. 899 * @param id The desired resource identifier, as generated by the aapt 900 * tool. This integer encodes the package, type, and resource 901 * entry. The value 0 is an invalid identifier. 902 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 903 * 904 */ 905 public Movie getMovie(@RawRes int id) throws NotFoundException { 906 InputStream is = openRawResource(id); 907 Movie movie = Movie.decodeStream(is); 908 try { 909 is.close(); 910 } 911 catch (java.io.IOException e) { 912 // don't care, since the return value is valid 913 } 914 return movie; 915 } 916 917 /** 918 * Returns a color integer associated with a particular resource ID. If the 919 * resource holds a complex {@link ColorStateList}, then the default color 920 * from the set is returned. 921 * 922 * @param id The desired resource identifier, as generated by the aapt 923 * tool. This integer encodes the package, type, and resource 924 * entry. The value 0 is an invalid identifier. 925 * 926 * @throws NotFoundException Throws NotFoundException if the given ID does 927 * not exist. 928 * 929 * @return A single color value in the form 0xAARRGGBB. 930 * @deprecated Use {@link #getColor(int, Theme)} instead. 931 */ 932 @ColorInt 933 @Deprecated 934 public int getColor(@ColorRes int id) throws NotFoundException { 935 return getColor(id, null); 936 } 937 938 /** 939 * Returns a themed color integer associated with a particular resource ID. 940 * If the resource holds a complex {@link ColorStateList}, then the default 941 * color from the set is returned. 942 * 943 * @param id The desired resource identifier, as generated by the aapt 944 * tool. This integer encodes the package, type, and resource 945 * entry. The value 0 is an invalid identifier. 946 * @param theme The theme used to style the color attributes, may be 947 * {@code null}. 948 * 949 * @throws NotFoundException Throws NotFoundException if the given ID does 950 * not exist. 951 * 952 * @return A single color value in the form 0xAARRGGBB. 953 */ 954 @ColorInt 955 public int getColor(@ColorRes int id, @Nullable Theme theme) throws NotFoundException { 956 TypedValue value; 957 synchronized (mAccessLock) { 958 value = mTmpValue; 959 if (value == null) { 960 value = new TypedValue(); 961 } 962 getValue(id, value, true); 963 if (value.type >= TypedValue.TYPE_FIRST_INT 964 && value.type <= TypedValue.TYPE_LAST_INT) { 965 mTmpValue = value; 966 return value.data; 967 } else if (value.type != TypedValue.TYPE_STRING) { 968 throw new NotFoundException( 969 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 970 + Integer.toHexString(value.type) + " is not valid"); 971 } 972 mTmpValue = null; 973 } 974 975 final ColorStateList csl = loadColorStateList(value, id, theme); 976 synchronized (mAccessLock) { 977 if (mTmpValue == null) { 978 mTmpValue = value; 979 } 980 } 981 982 return csl.getDefaultColor(); 983 } 984 985 /** 986 * Returns a color state list associated with a particular resource ID. The 987 * resource may contain either a single raw color value or a complex 988 * {@link ColorStateList} holding multiple possible colors. 989 * 990 * @param id The desired resource identifier of a {@link ColorStateList}, 991 * as generated by the aapt tool. This integer encodes the 992 * package, type, and resource entry. The value 0 is an invalid 993 * identifier. 994 * 995 * @throws NotFoundException Throws NotFoundException if the given ID does 996 * not exist. 997 * 998 * @return A ColorStateList object containing either a single solid color 999 * or multiple colors that can be selected based on a state. 1000 * @deprecated Use {@link #getColorStateList(int, Theme)} instead. 1001 */ 1002 @Nullable 1003 @Deprecated 1004 public ColorStateList getColorStateList(@ColorRes int id) throws NotFoundException { 1005 final ColorStateList csl = getColorStateList(id, null); 1006 if (csl != null && csl.canApplyTheme()) { 1007 Log.w(TAG, "ColorStateList " + getResourceName(id) + " has " 1008 + "unresolved theme attributes! Consider using " 1009 + "Resources.getColorStateList(int, Theme) or " 1010 + "Context.getColorStateList(int).", new RuntimeException()); 1011 } 1012 return csl; 1013 } 1014 1015 /** 1016 * Returns a themed color state list associated with a particular resource 1017 * ID. The resource may contain either a single raw color value or a 1018 * complex {@link ColorStateList} holding multiple possible colors. 1019 * 1020 * @param id The desired resource identifier of a {@link ColorStateList}, 1021 * as generated by the aapt tool. This integer encodes the 1022 * package, type, and resource entry. The value 0 is an invalid 1023 * identifier. 1024 * @param theme The theme used to style the color attributes, may be 1025 * {@code null}. 1026 * 1027 * @throws NotFoundException Throws NotFoundException if the given ID does 1028 * not exist. 1029 * 1030 * @return A themed ColorStateList object containing either a single solid 1031 * color or multiple colors that can be selected based on a state. 1032 */ 1033 @Nullable 1034 public ColorStateList getColorStateList(@ColorRes int id, @Nullable Theme theme) 1035 throws NotFoundException { 1036 TypedValue value; 1037 synchronized (mAccessLock) { 1038 value = mTmpValue; 1039 if (value == null) { 1040 value = new TypedValue(); 1041 } else { 1042 mTmpValue = null; 1043 } 1044 getValue(id, value, true); 1045 } 1046 1047 final ColorStateList res = loadColorStateList(value, id, theme); 1048 synchronized (mAccessLock) { 1049 if (mTmpValue == null) { 1050 mTmpValue = value; 1051 } 1052 } 1053 1054 return res; 1055 } 1056 1057 /** 1058 * Return a boolean associated with a particular resource ID. This can be 1059 * used with any integral resource value, and will return true if it is 1060 * non-zero. 1061 * 1062 * @param id The desired resource identifier, as generated by the aapt 1063 * tool. This integer encodes the package, type, and resource 1064 * entry. The value 0 is an invalid identifier. 1065 * 1066 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1067 * 1068 * @return Returns the boolean value contained in the resource. 1069 */ 1070 public boolean getBoolean(@BoolRes int id) throws NotFoundException { 1071 synchronized (mAccessLock) { 1072 TypedValue value = mTmpValue; 1073 if (value == null) { 1074 mTmpValue = value = new TypedValue(); 1075 } 1076 getValue(id, value, true); 1077 if (value.type >= TypedValue.TYPE_FIRST_INT 1078 && value.type <= TypedValue.TYPE_LAST_INT) { 1079 return value.data != 0; 1080 } 1081 throw new NotFoundException( 1082 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 1083 + Integer.toHexString(value.type) + " is not valid"); 1084 } 1085 } 1086 1087 /** 1088 * Return an integer associated with a particular resource ID. 1089 * 1090 * @param id The desired resource identifier, as generated by the aapt 1091 * tool. This integer encodes the package, type, and resource 1092 * entry. The value 0 is an invalid identifier. 1093 * 1094 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1095 * 1096 * @return Returns the integer value contained in the resource. 1097 */ 1098 public int getInteger(@IntegerRes int id) throws NotFoundException { 1099 synchronized (mAccessLock) { 1100 TypedValue value = mTmpValue; 1101 if (value == null) { 1102 mTmpValue = value = new TypedValue(); 1103 } 1104 getValue(id, value, true); 1105 if (value.type >= TypedValue.TYPE_FIRST_INT 1106 && value.type <= TypedValue.TYPE_LAST_INT) { 1107 return value.data; 1108 } 1109 throw new NotFoundException( 1110 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 1111 + Integer.toHexString(value.type) + " is not valid"); 1112 } 1113 } 1114 1115 /** 1116 * Retrieve a floating-point value for a particular resource ID. 1117 * 1118 * @param id The desired resource identifier, as generated by the aapt 1119 * tool. This integer encodes the package, type, and resource 1120 * entry. The value 0 is an invalid identifier. 1121 * 1122 * @return Returns the floating-point value contained in the resource. 1123 * 1124 * @throws NotFoundException Throws NotFoundException if the given ID does 1125 * not exist or is not a floating-point value. 1126 * @hide Pending API council approval. 1127 */ 1128 public float getFloat(int id) { 1129 synchronized (mAccessLock) { 1130 TypedValue value = mTmpValue; 1131 if (value == null) { 1132 mTmpValue = value = new TypedValue(); 1133 } 1134 getValue(id, value, true); 1135 if (value.type == TypedValue.TYPE_FLOAT) { 1136 return value.getFloat(); 1137 } 1138 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) + " type #0x" 1139 + Integer.toHexString(value.type) + " is not valid"); 1140 } 1141 } 1142 1143 /** 1144 * Return an XmlResourceParser through which you can read a view layout 1145 * description for the given resource ID. This parser has limited 1146 * functionality -- in particular, you can't change its input, and only 1147 * the high-level events are available. 1148 * 1149 * <p>This function is really a simple wrapper for calling 1150 * {@link #getXml} with a layout resource. 1151 * 1152 * @param id The desired resource identifier, as generated by the aapt 1153 * tool. This integer encodes the package, type, and resource 1154 * entry. The value 0 is an invalid identifier. 1155 * 1156 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1157 * 1158 * @return A new parser object through which you can read 1159 * the XML data. 1160 * 1161 * @see #getXml 1162 */ 1163 public XmlResourceParser getLayout(@LayoutRes int id) throws NotFoundException { 1164 return loadXmlResourceParser(id, "layout"); 1165 } 1166 1167 /** 1168 * Return an XmlResourceParser through which you can read an animation 1169 * description for the given resource ID. This parser has limited 1170 * functionality -- in particular, you can't change its input, and only 1171 * the high-level events are available. 1172 * 1173 * <p>This function is really a simple wrapper for calling 1174 * {@link #getXml} with an animation resource. 1175 * 1176 * @param id The desired resource identifier, as generated by the aapt 1177 * tool. This integer encodes the package, type, and resource 1178 * entry. The value 0 is an invalid identifier. 1179 * 1180 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1181 * 1182 * @return A new parser object through which you can read 1183 * the XML data. 1184 * 1185 * @see #getXml 1186 */ 1187 public XmlResourceParser getAnimation(@AnimRes int id) throws NotFoundException { 1188 return loadXmlResourceParser(id, "anim"); 1189 } 1190 1191 /** 1192 * Return an XmlResourceParser through which you can read a generic XML 1193 * resource for the given resource ID. 1194 * 1195 * <p>The XmlPullParser implementation returned here has some limited 1196 * functionality. In particular, you can't change its input, and only 1197 * high-level parsing events are available (since the document was 1198 * pre-parsed for you at build time, which involved merging text and 1199 * stripping comments). 1200 * 1201 * @param id The desired resource identifier, as generated by the aapt 1202 * tool. This integer encodes the package, type, and resource 1203 * entry. The value 0 is an invalid identifier. 1204 * 1205 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1206 * 1207 * @return A new parser object through which you can read 1208 * the XML data. 1209 * 1210 * @see android.util.AttributeSet 1211 */ 1212 public XmlResourceParser getXml(@XmlRes int id) throws NotFoundException { 1213 return loadXmlResourceParser(id, "xml"); 1214 } 1215 1216 /** 1217 * Open a data stream for reading a raw resource. This can only be used 1218 * with resources whose value is the name of an asset files -- that is, it can be 1219 * used to open drawable, sound, and raw resources; it will fail on string 1220 * and color resources. 1221 * 1222 * @param id The resource identifier to open, as generated by the appt 1223 * tool. 1224 * 1225 * @return InputStream Access to the resource data. 1226 * 1227 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1228 * 1229 */ 1230 public InputStream openRawResource(@RawRes int id) throws NotFoundException { 1231 TypedValue value; 1232 synchronized (mAccessLock) { 1233 value = mTmpValue; 1234 if (value == null) { 1235 value = new TypedValue(); 1236 } else { 1237 mTmpValue = null; 1238 } 1239 } 1240 InputStream res = openRawResource(id, value); 1241 synchronized (mAccessLock) { 1242 if (mTmpValue == null) { 1243 mTmpValue = value; 1244 } 1245 } 1246 return res; 1247 } 1248 1249 /** 1250 * Open a data stream for reading a raw resource. This can only be used 1251 * with resources whose value is the name of an asset file -- that is, it can be 1252 * used to open drawable, sound, and raw resources; it will fail on string 1253 * and color resources. 1254 * 1255 * @param id The resource identifier to open, as generated by the appt tool. 1256 * @param value The TypedValue object to hold the resource information. 1257 * 1258 * @return InputStream Access to the resource data. 1259 * 1260 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1261 */ 1262 public InputStream openRawResource(@RawRes int id, TypedValue value) 1263 throws NotFoundException { 1264 getValue(id, value, true); 1265 1266 try { 1267 return mAssets.openNonAsset(value.assetCookie, value.string.toString(), 1268 AssetManager.ACCESS_STREAMING); 1269 } catch (Exception e) { 1270 NotFoundException rnf = new NotFoundException("File " + value.string.toString() + 1271 " from drawable resource ID #0x" + Integer.toHexString(id)); 1272 rnf.initCause(e); 1273 throw rnf; 1274 } 1275 } 1276 1277 /** 1278 * Open a file descriptor for reading a raw resource. This can only be used 1279 * with resources whose value is the name of an asset files -- that is, it can be 1280 * used to open drawable, sound, and raw resources; it will fail on string 1281 * and color resources. 1282 * 1283 * <p>This function only works for resources that are stored in the package 1284 * as uncompressed data, which typically includes things like mp3 files 1285 * and png images. 1286 * 1287 * @param id The resource identifier to open, as generated by the appt 1288 * tool. 1289 * 1290 * @return AssetFileDescriptor A new file descriptor you can use to read 1291 * the resource. This includes the file descriptor itself, as well as the 1292 * offset and length of data where the resource appears in the file. A 1293 * null is returned if the file exists but is compressed. 1294 * 1295 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1296 * 1297 */ 1298 public AssetFileDescriptor openRawResourceFd(@RawRes int id) 1299 throws NotFoundException { 1300 TypedValue value; 1301 synchronized (mAccessLock) { 1302 value = mTmpValue; 1303 if (value == null) { 1304 value = new TypedValue(); 1305 } else { 1306 mTmpValue = null; 1307 } 1308 getValue(id, value, true); 1309 } 1310 try { 1311 return mAssets.openNonAssetFd( 1312 value.assetCookie, value.string.toString()); 1313 } catch (Exception e) { 1314 NotFoundException rnf = new NotFoundException( 1315 "File " + value.string.toString() 1316 + " from drawable resource ID #0x" 1317 + Integer.toHexString(id)); 1318 rnf.initCause(e); 1319 throw rnf; 1320 } finally { 1321 synchronized (mAccessLock) { 1322 if (mTmpValue == null) { 1323 mTmpValue = value; 1324 } 1325 } 1326 } 1327 } 1328 1329 /** 1330 * Return the raw data associated with a particular resource ID. 1331 * 1332 * @param id The desired resource identifier, as generated by the aapt 1333 * tool. This integer encodes the package, type, and resource 1334 * entry. The value 0 is an invalid identifier. 1335 * @param outValue Object in which to place the resource data. 1336 * @param resolveRefs If true, a resource that is a reference to another 1337 * resource will be followed so that you receive the 1338 * actual final resource data. If false, the TypedValue 1339 * will be filled in with the reference itself. 1340 * 1341 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1342 * 1343 */ 1344 public void getValue(@AnyRes int id, TypedValue outValue, boolean resolveRefs) 1345 throws NotFoundException { 1346 boolean found = mAssets.getResourceValue(id, 0, outValue, resolveRefs); 1347 if (found) { 1348 return; 1349 } 1350 throw new NotFoundException("Resource ID #0x" 1351 + Integer.toHexString(id)); 1352 } 1353 1354 /** 1355 * Get the raw value associated with a resource with associated density. 1356 * 1357 * @param id resource identifier 1358 * @param density density in DPI 1359 * @param resolveRefs If true, a resource that is a reference to another 1360 * resource will be followed so that you receive the actual final 1361 * resource data. If false, the TypedValue will be filled in with 1362 * the reference itself. 1363 * @throws NotFoundException Throws NotFoundException if the given ID does 1364 * not exist. 1365 * @see #getValue(String, TypedValue, boolean) 1366 */ 1367 public void getValueForDensity(@AnyRes int id, int density, TypedValue outValue, 1368 boolean resolveRefs) throws NotFoundException { 1369 boolean found = mAssets.getResourceValue(id, density, outValue, resolveRefs); 1370 if (found) { 1371 return; 1372 } 1373 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id)); 1374 } 1375 1376 /** 1377 * Return the raw data associated with a particular resource ID. 1378 * See getIdentifier() for information on how names are mapped to resource 1379 * IDs, and getString(int) for information on how string resources are 1380 * retrieved. 1381 * 1382 * <p>Note: use of this function is discouraged. It is much more 1383 * efficient to retrieve resources by identifier than by name. 1384 * 1385 * @param name The name of the desired resource. This is passed to 1386 * getIdentifier() with a default type of "string". 1387 * @param outValue Object in which to place the resource data. 1388 * @param resolveRefs If true, a resource that is a reference to another 1389 * resource will be followed so that you receive the 1390 * actual final resource data. If false, the TypedValue 1391 * will be filled in with the reference itself. 1392 * 1393 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1394 * 1395 */ 1396 public void getValue(String name, TypedValue outValue, boolean resolveRefs) 1397 throws NotFoundException { 1398 int id = getIdentifier(name, "string", null); 1399 if (id != 0) { 1400 getValue(id, outValue, resolveRefs); 1401 return; 1402 } 1403 throw new NotFoundException("String resource name " + name); 1404 } 1405 1406 /** 1407 * This class holds the current attribute values for a particular theme. 1408 * In other words, a Theme is a set of values for resource attributes; 1409 * these are used in conjunction with {@link TypedArray} 1410 * to resolve the final value for an attribute. 1411 * 1412 * <p>The Theme's attributes come into play in two ways: (1) a styled 1413 * attribute can explicit reference a value in the theme through the 1414 * "?themeAttribute" syntax; (2) if no value has been defined for a 1415 * particular styled attribute, as a last resort we will try to find that 1416 * attribute's value in the Theme. 1417 * 1418 * <p>You will normally use the {@link #obtainStyledAttributes} APIs to 1419 * retrieve XML attributes with style and theme information applied. 1420 */ 1421 public final class Theme { 1422 /** 1423 * Place new attribute values into the theme. The style resource 1424 * specified by <var>resid</var> will be retrieved from this Theme's 1425 * resources, its values placed into the Theme object. 1426 * 1427 * <p>The semantics of this function depends on the <var>force</var> 1428 * argument: If false, only values that are not already defined in 1429 * the theme will be copied from the system resource; otherwise, if 1430 * any of the style's attributes are already defined in the theme, the 1431 * current values in the theme will be overwritten. 1432 * 1433 * @param resId The resource ID of a style resource from which to 1434 * obtain attribute values. 1435 * @param force If true, values in the style resource will always be 1436 * used in the theme; otherwise, they will only be used 1437 * if not already defined in the theme. 1438 */ 1439 public void applyStyle(int resId, boolean force) { 1440 AssetManager.applyThemeStyle(mTheme, resId, force); 1441 1442 mThemeResId = resId; 1443 mKey += Integer.toHexString(resId) + (force ? "! " : " "); 1444 } 1445 1446 /** 1447 * Set this theme to hold the same contents as the theme 1448 * <var>other</var>. If both of these themes are from the same 1449 * Resources object, they will be identical after this function 1450 * returns. If they are from different Resources, only the resources 1451 * they have in common will be set in this theme. 1452 * 1453 * @param other The existing Theme to copy from. 1454 */ 1455 public void setTo(Theme other) { 1456 AssetManager.copyTheme(mTheme, other.mTheme); 1457 1458 mThemeResId = other.mThemeResId; 1459 mKey = other.mKey; 1460 } 1461 1462 /** 1463 * Return a TypedArray holding the values defined by 1464 * <var>Theme</var> which are listed in <var>attrs</var>. 1465 * 1466 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1467 * with the array. 1468 * 1469 * @param attrs The desired attributes. 1470 * 1471 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1472 * 1473 * @return Returns a TypedArray holding an array of the attribute values. 1474 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1475 * when done with it. 1476 * 1477 * @see Resources#obtainAttributes 1478 * @see #obtainStyledAttributes(int, int[]) 1479 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1480 */ 1481 public TypedArray obtainStyledAttributes(@StyleableRes int[] attrs) { 1482 final int len = attrs.length; 1483 final TypedArray array = TypedArray.obtain(Resources.this, len); 1484 array.mTheme = this; 1485 AssetManager.applyStyle(mTheme, 0, 0, 0, attrs, array.mData, array.mIndices); 1486 return array; 1487 } 1488 1489 /** 1490 * Return a TypedArray holding the values defined by the style 1491 * resource <var>resid</var> which are listed in <var>attrs</var>. 1492 * 1493 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1494 * with the array. 1495 * 1496 * @param resid The desired style resource. 1497 * @param attrs The desired attributes in the style. 1498 * 1499 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1500 * 1501 * @return Returns a TypedArray holding an array of the attribute values. 1502 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1503 * when done with it. 1504 * 1505 * @see Resources#obtainAttributes 1506 * @see #obtainStyledAttributes(int[]) 1507 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1508 */ 1509 public TypedArray obtainStyledAttributes(@StyleRes int resid, @StyleableRes int[] attrs) 1510 throws NotFoundException { 1511 final int len = attrs.length; 1512 final TypedArray array = TypedArray.obtain(Resources.this, len); 1513 array.mTheme = this; 1514 if (false) { 1515 int[] data = array.mData; 1516 1517 System.out.println("**********************************************************"); 1518 System.out.println("**********************************************************"); 1519 System.out.println("**********************************************************"); 1520 System.out.println("Attributes:"); 1521 String s = " Attrs:"; 1522 int i; 1523 for (i=0; i<attrs.length; i++) { 1524 s = s + " 0x" + Integer.toHexString(attrs[i]); 1525 } 1526 System.out.println(s); 1527 s = " Found:"; 1528 TypedValue value = new TypedValue(); 1529 for (i=0; i<attrs.length; i++) { 1530 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1531 value.type = data[d+AssetManager.STYLE_TYPE]; 1532 value.data = data[d+AssetManager.STYLE_DATA]; 1533 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1534 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1535 s = s + " 0x" + Integer.toHexString(attrs[i]) 1536 + "=" + value; 1537 } 1538 System.out.println(s); 1539 } 1540 AssetManager.applyStyle(mTheme, 0, resid, 0, attrs, array.mData, array.mIndices); 1541 return array; 1542 } 1543 1544 /** 1545 * Return a TypedArray holding the attribute values in 1546 * <var>set</var> 1547 * that are listed in <var>attrs</var>. In addition, if the given 1548 * AttributeSet specifies a style class (through the "style" attribute), 1549 * that style will be applied on top of the base attributes it defines. 1550 * 1551 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1552 * with the array. 1553 * 1554 * <p>When determining the final value of a particular attribute, there 1555 * are four inputs that come into play:</p> 1556 * 1557 * <ol> 1558 * <li> Any attribute values in the given AttributeSet. 1559 * <li> The style resource specified in the AttributeSet (named 1560 * "style"). 1561 * <li> The default style specified by <var>defStyleAttr</var> and 1562 * <var>defStyleRes</var> 1563 * <li> The base values in this theme. 1564 * </ol> 1565 * 1566 * <p>Each of these inputs is considered in-order, with the first listed 1567 * taking precedence over the following ones. In other words, if in the 1568 * AttributeSet you have supplied <code><Button 1569 * textColor="#ff000000"></code>, then the button's text will 1570 * <em>always</em> be black, regardless of what is specified in any of 1571 * the styles. 1572 * 1573 * @param set The base set of attribute values. May be null. 1574 * @param attrs The desired attributes to be retrieved. 1575 * @param defStyleAttr An attribute in the current theme that contains a 1576 * reference to a style resource that supplies 1577 * defaults values for the TypedArray. Can be 1578 * 0 to not look for defaults. 1579 * @param defStyleRes A resource identifier of a style resource that 1580 * supplies default values for the TypedArray, 1581 * used only if defStyleAttr is 0 or can not be found 1582 * in the theme. Can be 0 to not look for defaults. 1583 * 1584 * @return Returns a TypedArray holding an array of the attribute values. 1585 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1586 * when done with it. 1587 * 1588 * @see Resources#obtainAttributes 1589 * @see #obtainStyledAttributes(int[]) 1590 * @see #obtainStyledAttributes(int, int[]) 1591 */ 1592 public TypedArray obtainStyledAttributes(AttributeSet set, 1593 @StyleableRes int[] attrs, @AttrRes int defStyleAttr, @StyleRes int defStyleRes) { 1594 final int len = attrs.length; 1595 final TypedArray array = TypedArray.obtain(Resources.this, len); 1596 1597 // XXX note that for now we only work with compiled XML files. 1598 // To support generic XML files we will need to manually parse 1599 // out the attributes from the XML file (applying type information 1600 // contained in the resources and such). 1601 final XmlBlock.Parser parser = (XmlBlock.Parser)set; 1602 AssetManager.applyStyle(mTheme, defStyleAttr, defStyleRes, 1603 parser != null ? parser.mParseState : 0, attrs, array.mData, array.mIndices); 1604 1605 array.mTheme = this; 1606 array.mXml = parser; 1607 1608 if (false) { 1609 int[] data = array.mData; 1610 1611 System.out.println("Attributes:"); 1612 String s = " Attrs:"; 1613 int i; 1614 for (i=0; i<set.getAttributeCount(); i++) { 1615 s = s + " " + set.getAttributeName(i); 1616 int id = set.getAttributeNameResource(i); 1617 if (id != 0) { 1618 s = s + "(0x" + Integer.toHexString(id) + ")"; 1619 } 1620 s = s + "=" + set.getAttributeValue(i); 1621 } 1622 System.out.println(s); 1623 s = " Found:"; 1624 TypedValue value = new TypedValue(); 1625 for (i=0; i<attrs.length; i++) { 1626 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1627 value.type = data[d+AssetManager.STYLE_TYPE]; 1628 value.data = data[d+AssetManager.STYLE_DATA]; 1629 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1630 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1631 s = s + " 0x" + Integer.toHexString(attrs[i]) 1632 + "=" + value; 1633 } 1634 System.out.println(s); 1635 } 1636 1637 return array; 1638 } 1639 1640 /** 1641 * Retrieve the values for a set of attributes in the Theme. The 1642 * contents of the typed array are ultimately filled in by 1643 * {@link Resources#getValue}. 1644 * 1645 * @param values The base set of attribute values, must be equal in 1646 * length to {@code attrs}. All values must be of type 1647 * {@link TypedValue#TYPE_ATTRIBUTE}. 1648 * @param attrs The desired attributes to be retrieved. 1649 * @return Returns a TypedArray holding an array of the attribute 1650 * values. Be sure to call {@link TypedArray#recycle()} 1651 * when done with it. 1652 * @hide 1653 */ 1654 @NonNull 1655 public TypedArray resolveAttributes(@NonNull int[] values, @NonNull int[] attrs) { 1656 final int len = attrs.length; 1657 if (values == null || len != values.length) { 1658 throw new IllegalArgumentException( 1659 "Base attribute values must the same length as attrs"); 1660 } 1661 1662 final TypedArray array = TypedArray.obtain(Resources.this, len); 1663 AssetManager.resolveAttrs(mTheme, 0, 0, values, attrs, array.mData, array.mIndices); 1664 array.mTheme = this; 1665 array.mXml = null; 1666 1667 return array; 1668 } 1669 1670 /** 1671 * Retrieve the value of an attribute in the Theme. The contents of 1672 * <var>outValue</var> are ultimately filled in by 1673 * {@link Resources#getValue}. 1674 * 1675 * @param resid The resource identifier of the desired theme 1676 * attribute. 1677 * @param outValue Filled in with the ultimate resource value supplied 1678 * by the attribute. 1679 * @param resolveRefs If true, resource references will be walked; if 1680 * false, <var>outValue</var> may be a 1681 * TYPE_REFERENCE. In either case, it will never 1682 * be a TYPE_ATTRIBUTE. 1683 * 1684 * @return boolean Returns true if the attribute was found and 1685 * <var>outValue</var> is valid, else false. 1686 */ 1687 public boolean resolveAttribute(int resid, TypedValue outValue, boolean resolveRefs) { 1688 boolean got = mAssets.getThemeValue(mTheme, resid, outValue, resolveRefs); 1689 if (false) { 1690 System.out.println( 1691 "resolveAttribute #" + Integer.toHexString(resid) 1692 + " got=" + got + ", type=0x" + Integer.toHexString(outValue.type) 1693 + ", data=0x" + Integer.toHexString(outValue.data)); 1694 } 1695 return got; 1696 } 1697 1698 /** 1699 * Gets all of the attribute ids associated with this {@link Theme}. For debugging only. 1700 * 1701 * @return The int array containing attribute ids associated with this {@link Theme}. 1702 * @hide 1703 */ 1704 public int[] getAllAttributes() { 1705 return mAssets.getStyleAttributes(getAppliedStyleResId()); 1706 } 1707 1708 /** 1709 * Returns the resources to which this theme belongs. 1710 * 1711 * @return Resources to which this theme belongs. 1712 */ 1713 public Resources getResources() { 1714 return Resources.this; 1715 } 1716 1717 /** 1718 * Return a drawable object associated with a particular resource ID 1719 * and styled for the Theme. 1720 * 1721 * @param id The desired resource identifier, as generated by the aapt 1722 * tool. This integer encodes the package, type, and resource 1723 * entry. The value 0 is an invalid identifier. 1724 * @return Drawable An object that can be used to draw this resource. 1725 * @throws NotFoundException Throws NotFoundException if the given ID 1726 * does not exist. 1727 */ 1728 public Drawable getDrawable(@DrawableRes int id) throws NotFoundException { 1729 return Resources.this.getDrawable(id, this); 1730 } 1731 1732 /** 1733 * Print contents of this theme out to the log. For debugging only. 1734 * 1735 * @param priority The log priority to use. 1736 * @param tag The log tag to use. 1737 * @param prefix Text to prefix each line printed. 1738 */ 1739 public void dump(int priority, String tag, String prefix) { 1740 AssetManager.dumpTheme(mTheme, priority, tag, prefix); 1741 } 1742 1743 @Override 1744 protected void finalize() throws Throwable { 1745 super.finalize(); 1746 mAssets.releaseTheme(mTheme); 1747 } 1748 1749 /*package*/ Theme() { 1750 mAssets = Resources.this.mAssets; 1751 mTheme = mAssets.createTheme(); 1752 } 1753 1754 @SuppressWarnings("hiding") 1755 private final AssetManager mAssets; 1756 private final long mTheme; 1757 1758 /** Resource identifier for the theme. */ 1759 private int mThemeResId = 0; 1760 1761 /** Unique key for the series of styles applied to this theme. */ 1762 private String mKey = ""; 1763 1764 // Needed by layoutlib. 1765 /*package*/ long getNativeTheme() { 1766 return mTheme; 1767 } 1768 1769 /*package*/ int getAppliedStyleResId() { 1770 return mThemeResId; 1771 } 1772 1773 /*package*/ String getKey() { 1774 return mKey; 1775 } 1776 1777 private String getResourceNameFromHexString(String hexString) { 1778 return getResourceName(Integer.parseInt(hexString, 16)); 1779 } 1780 1781 /** 1782 * Parses {@link #mKey} and returns a String array that holds pairs of adjacent Theme data: 1783 * resource name followed by whether or not it was forced, as specified by 1784 * {@link #applyStyle(int, boolean)}. 1785 * 1786 * @hide 1787 */ 1788 @ViewDebug.ExportedProperty(category = "theme", hasAdjacentMapping = true) 1789 public String[] getTheme() { 1790 String[] themeData = mKey.split(" "); 1791 String[] themes = new String[themeData.length * 2]; 1792 String theme; 1793 boolean forced; 1794 1795 for (int i = 0, j = themeData.length - 1; i < themes.length; i += 2, --j) { 1796 theme = themeData[j]; 1797 forced = theme.endsWith("!"); 1798 themes[i] = forced ? 1799 getResourceNameFromHexString(theme.substring(0, theme.length() - 1)) : 1800 getResourceNameFromHexString(theme); 1801 themes[i + 1] = forced ? "forced" : "not forced"; 1802 } 1803 return themes; 1804 } 1805 } 1806 1807 /** 1808 * Generate a new Theme object for this set of Resources. It initially 1809 * starts out empty. 1810 * 1811 * @return Theme The newly created Theme container. 1812 */ 1813 public final Theme newTheme() { 1814 return new Theme(); 1815 } 1816 1817 /** 1818 * Retrieve a set of basic attribute values from an AttributeSet, not 1819 * performing styling of them using a theme and/or style resources. 1820 * 1821 * @param set The current attribute values to retrieve. 1822 * @param attrs The specific attributes to be retrieved. 1823 * @return Returns a TypedArray holding an array of the attribute values. 1824 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1825 * when done with it. 1826 * 1827 * @see Theme#obtainStyledAttributes(AttributeSet, int[], int, int) 1828 */ 1829 public TypedArray obtainAttributes(AttributeSet set, int[] attrs) { 1830 int len = attrs.length; 1831 TypedArray array = TypedArray.obtain(this, len); 1832 1833 // XXX note that for now we only work with compiled XML files. 1834 // To support generic XML files we will need to manually parse 1835 // out the attributes from the XML file (applying type information 1836 // contained in the resources and such). 1837 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1838 mAssets.retrieveAttributes(parser.mParseState, attrs, 1839 array.mData, array.mIndices); 1840 1841 array.mXml = parser; 1842 1843 return array; 1844 } 1845 1846 /** 1847 * Store the newly updated configuration. 1848 */ 1849 public void updateConfiguration(Configuration config, 1850 DisplayMetrics metrics) { 1851 updateConfiguration(config, metrics, null); 1852 } 1853 1854 /** 1855 * @hide 1856 */ 1857 public void updateConfiguration(Configuration config, 1858 DisplayMetrics metrics, CompatibilityInfo compat) { 1859 synchronized (mAccessLock) { 1860 if (false) { 1861 Slog.i(TAG, "**** Updating config of " + this + ": old config is " 1862 + mConfiguration + " old compat is " + mCompatibilityInfo); 1863 Slog.i(TAG, "**** Updating config of " + this + ": new config is " 1864 + config + " new compat is " + compat); 1865 } 1866 if (compat != null) { 1867 mCompatibilityInfo = compat; 1868 } 1869 if (metrics != null) { 1870 mMetrics.setTo(metrics); 1871 } 1872 // NOTE: We should re-arrange this code to create a Display 1873 // with the CompatibilityInfo that is used everywhere we deal 1874 // with the display in relation to this app, rather than 1875 // doing the conversion here. This impl should be okay because 1876 // we make sure to return a compatible display in the places 1877 // where there are public APIs to retrieve the display... but 1878 // it would be cleaner and more maintainble to just be 1879 // consistently dealing with a compatible display everywhere in 1880 // the framework. 1881 mCompatibilityInfo.applyToDisplayMetrics(mMetrics); 1882 1883 final int configChanges = calcConfigChanges(config); 1884 if (mConfiguration.locale == null) { 1885 mConfiguration.locale = Locale.getDefault(); 1886 mConfiguration.setLayoutDirection(mConfiguration.locale); 1887 } 1888 if (mConfiguration.densityDpi != Configuration.DENSITY_DPI_UNDEFINED) { 1889 mMetrics.densityDpi = mConfiguration.densityDpi; 1890 mMetrics.density = mConfiguration.densityDpi * DisplayMetrics.DENSITY_DEFAULT_SCALE; 1891 } 1892 mMetrics.scaledDensity = mMetrics.density * mConfiguration.fontScale; 1893 1894 String locale = null; 1895 if (mConfiguration.locale != null) { 1896 locale = adjustLanguageTag(mConfiguration.locale.toLanguageTag()); 1897 } 1898 1899 final int width, height; 1900 if (mMetrics.widthPixels >= mMetrics.heightPixels) { 1901 width = mMetrics.widthPixels; 1902 height = mMetrics.heightPixels; 1903 } else { 1904 //noinspection SuspiciousNameCombination 1905 width = mMetrics.heightPixels; 1906 //noinspection SuspiciousNameCombination 1907 height = mMetrics.widthPixels; 1908 } 1909 1910 final int keyboardHidden; 1911 if (mConfiguration.keyboardHidden == Configuration.KEYBOARDHIDDEN_NO 1912 && mConfiguration.hardKeyboardHidden == Configuration.HARDKEYBOARDHIDDEN_YES) { 1913 keyboardHidden = Configuration.KEYBOARDHIDDEN_SOFT; 1914 } else { 1915 keyboardHidden = mConfiguration.keyboardHidden; 1916 } 1917 1918 mAssets.setConfiguration(mConfiguration.mcc, mConfiguration.mnc, 1919 locale, mConfiguration.orientation, 1920 mConfiguration.touchscreen, 1921 mConfiguration.densityDpi, mConfiguration.keyboard, 1922 keyboardHidden, mConfiguration.navigation, width, height, 1923 mConfiguration.smallestScreenWidthDp, 1924 mConfiguration.screenWidthDp, mConfiguration.screenHeightDp, 1925 mConfiguration.screenLayout, mConfiguration.uiMode, 1926 Build.VERSION.RESOURCES_SDK_INT); 1927 1928 if (DEBUG_CONFIG) { 1929 Slog.i(TAG, "**** Updating config of " + this + ": final config is " + mConfiguration 1930 + " final compat is " + mCompatibilityInfo); 1931 } 1932 1933 clearDrawableCachesLocked(mDrawableCache, configChanges); 1934 clearDrawableCachesLocked(mColorDrawableCache, configChanges); 1935 mColorStateListCache.onConfigurationChange(configChanges); 1936 mAnimatorCache.onConfigurationChange(configChanges); 1937 mStateListAnimatorCache.onConfigurationChange(configChanges); 1938 1939 flushLayoutCache(); 1940 } 1941 synchronized (sSync) { 1942 if (mPluralRule != null) { 1943 mPluralRule = NativePluralRules.forLocale(config.locale); 1944 } 1945 } 1946 } 1947 1948 /** 1949 * Called by ConfigurationBoundResourceCacheTest via reflection. 1950 */ 1951 private int calcConfigChanges(Configuration config) { 1952 int configChanges = 0xfffffff; 1953 if (config != null) { 1954 mTmpConfig.setTo(config); 1955 int density = config.densityDpi; 1956 if (density == Configuration.DENSITY_DPI_UNDEFINED) { 1957 density = mMetrics.noncompatDensityDpi; 1958 } 1959 1960 mCompatibilityInfo.applyToConfiguration(density, mTmpConfig); 1961 1962 if (mTmpConfig.locale == null) { 1963 mTmpConfig.locale = Locale.getDefault(); 1964 mTmpConfig.setLayoutDirection(mTmpConfig.locale); 1965 } 1966 configChanges = mConfiguration.updateFrom(mTmpConfig); 1967 configChanges = ActivityInfo.activityInfoConfigToNative(configChanges); 1968 } 1969 return configChanges; 1970 } 1971 1972 private void clearDrawableCachesLocked( 1973 ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches, 1974 int configChanges) { 1975 final int N = caches.size(); 1976 for (int i = 0; i < N; i++) { 1977 clearDrawableCacheLocked(caches.valueAt(i), configChanges); 1978 } 1979 } 1980 1981 private void clearDrawableCacheLocked( 1982 LongSparseArray<WeakReference<ConstantState>> cache, int configChanges) { 1983 if (DEBUG_CONFIG) { 1984 Log.d(TAG, "Cleaning up drawables config changes: 0x" 1985 + Integer.toHexString(configChanges)); 1986 } 1987 final int N = cache.size(); 1988 for (int i = 0; i < N; i++) { 1989 final WeakReference<ConstantState> ref = cache.valueAt(i); 1990 if (ref != null) { 1991 final ConstantState cs = ref.get(); 1992 if (cs != null) { 1993 if (Configuration.needNewResources( 1994 configChanges, cs.getChangingConfigurations())) { 1995 if (DEBUG_CONFIG) { 1996 Log.d(TAG, "FLUSHING #0x" 1997 + Long.toHexString(cache.keyAt(i)) 1998 + " / " + cs + " with changes: 0x" 1999 + Integer.toHexString(cs.getChangingConfigurations())); 2000 } 2001 cache.setValueAt(i, null); 2002 } else if (DEBUG_CONFIG) { 2003 Log.d(TAG, "(Keeping #0x" 2004 + Long.toHexString(cache.keyAt(i)) 2005 + " / " + cs + " with changes: 0x" 2006 + Integer.toHexString(cs.getChangingConfigurations()) 2007 + ")"); 2008 } 2009 } 2010 } 2011 } 2012 } 2013 2014 /** 2015 * {@code Locale.toLanguageTag} will transform the obsolete (and deprecated) 2016 * language codes "in", "ji" and "iw" to "id", "yi" and "he" respectively. 2017 * 2018 * All released versions of android prior to "L" used the deprecated language 2019 * tags, so we will need to support them for backwards compatibility. 2020 * 2021 * Note that this conversion needs to take place *after* the call to 2022 * {@code toLanguageTag} because that will convert all the deprecated codes to 2023 * the new ones, even if they're set manually. 2024 */ 2025 private static String adjustLanguageTag(String languageTag) { 2026 final int separator = languageTag.indexOf('-'); 2027 final String language; 2028 final String remainder; 2029 2030 if (separator == -1) { 2031 language = languageTag; 2032 remainder = ""; 2033 } else { 2034 language = languageTag.substring(0, separator); 2035 remainder = languageTag.substring(separator); 2036 } 2037 2038 return Locale.adjustLanguageCode(language) + remainder; 2039 } 2040 2041 /** 2042 * Update the system resources configuration if they have previously 2043 * been initialized. 2044 * 2045 * @hide 2046 */ 2047 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics, 2048 CompatibilityInfo compat) { 2049 if (mSystem != null) { 2050 mSystem.updateConfiguration(config, metrics, compat); 2051 //Log.i(TAG, "Updated system resources " + mSystem 2052 // + ": " + mSystem.getConfiguration()); 2053 } 2054 } 2055 2056 /** 2057 * Return the current display metrics that are in effect for this resource 2058 * object. The returned object should be treated as read-only. 2059 * 2060 * @return The resource's current display metrics. 2061 */ 2062 public DisplayMetrics getDisplayMetrics() { 2063 if (DEBUG_CONFIG) Slog.v(TAG, "Returning DisplayMetrics: " + mMetrics.widthPixels 2064 + "x" + mMetrics.heightPixels + " " + mMetrics.density); 2065 return mMetrics; 2066 } 2067 2068 /** 2069 * Return the current configuration that is in effect for this resource 2070 * object. The returned object should be treated as read-only. 2071 * 2072 * @return The resource's current configuration. 2073 */ 2074 public Configuration getConfiguration() { 2075 return mConfiguration; 2076 } 2077 2078 /** 2079 * Return the compatibility mode information for the application. 2080 * The returned object should be treated as read-only. 2081 * 2082 * @return compatibility info. 2083 * @hide 2084 */ 2085 public CompatibilityInfo getCompatibilityInfo() { 2086 return mCompatibilityInfo; 2087 } 2088 2089 /** 2090 * This is just for testing. 2091 * @hide 2092 */ 2093 public void setCompatibilityInfo(CompatibilityInfo ci) { 2094 if (ci != null) { 2095 mCompatibilityInfo = ci; 2096 updateConfiguration(mConfiguration, mMetrics); 2097 } 2098 } 2099 2100 /** 2101 * Return a resource identifier for the given resource name. A fully 2102 * qualified resource name is of the form "package:type/entry". The first 2103 * two components (package and type) are optional if defType and 2104 * defPackage, respectively, are specified here. 2105 * 2106 * <p>Note: use of this function is discouraged. It is much more 2107 * efficient to retrieve resources by identifier than by name. 2108 * 2109 * @param name The name of the desired resource. 2110 * @param defType Optional default resource type to find, if "type/" is 2111 * not included in the name. Can be null to require an 2112 * explicit type. 2113 * @param defPackage Optional default package to find, if "package:" is 2114 * not included in the name. Can be null to require an 2115 * explicit package. 2116 * 2117 * @return int The associated resource identifier. Returns 0 if no such 2118 * resource was found. (0 is not a valid resource ID.) 2119 */ 2120 public int getIdentifier(String name, String defType, String defPackage) { 2121 if (name == null) { 2122 throw new NullPointerException("name is null"); 2123 } 2124 try { 2125 return Integer.parseInt(name); 2126 } catch (Exception e) { 2127 // Ignore 2128 } 2129 return mAssets.getResourceIdentifier(name, defType, defPackage); 2130 } 2131 2132 /** 2133 * Return true if given resource identifier includes a package. 2134 * 2135 * @hide 2136 */ 2137 public static boolean resourceHasPackage(@AnyRes int resid) { 2138 return (resid >>> 24) != 0; 2139 } 2140 2141 /** 2142 * Return the full name for a given resource identifier. This name is 2143 * a single string of the form "package:type/entry". 2144 * 2145 * @param resid The resource identifier whose name is to be retrieved. 2146 * 2147 * @return A string holding the name of the resource. 2148 * 2149 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2150 * 2151 * @see #getResourcePackageName 2152 * @see #getResourceTypeName 2153 * @see #getResourceEntryName 2154 */ 2155 public String getResourceName(@AnyRes int resid) throws NotFoundException { 2156 String str = mAssets.getResourceName(resid); 2157 if (str != null) return str; 2158 throw new NotFoundException("Unable to find resource ID #0x" 2159 + Integer.toHexString(resid)); 2160 } 2161 2162 /** 2163 * Return the package name for a given resource identifier. 2164 * 2165 * @param resid The resource identifier whose package name is to be 2166 * retrieved. 2167 * 2168 * @return A string holding the package name of the resource. 2169 * 2170 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2171 * 2172 * @see #getResourceName 2173 */ 2174 public String getResourcePackageName(@AnyRes int resid) throws NotFoundException { 2175 String str = mAssets.getResourcePackageName(resid); 2176 if (str != null) return str; 2177 throw new NotFoundException("Unable to find resource ID #0x" 2178 + Integer.toHexString(resid)); 2179 } 2180 2181 /** 2182 * Return the type name for a given resource identifier. 2183 * 2184 * @param resid The resource identifier whose type name is to be 2185 * retrieved. 2186 * 2187 * @return A string holding the type name of the resource. 2188 * 2189 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2190 * 2191 * @see #getResourceName 2192 */ 2193 public String getResourceTypeName(@AnyRes int resid) throws NotFoundException { 2194 String str = mAssets.getResourceTypeName(resid); 2195 if (str != null) return str; 2196 throw new NotFoundException("Unable to find resource ID #0x" 2197 + Integer.toHexString(resid)); 2198 } 2199 2200 /** 2201 * Return the entry name for a given resource identifier. 2202 * 2203 * @param resid The resource identifier whose entry name is to be 2204 * retrieved. 2205 * 2206 * @return A string holding the entry name of the resource. 2207 * 2208 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2209 * 2210 * @see #getResourceName 2211 */ 2212 public String getResourceEntryName(@AnyRes int resid) throws NotFoundException { 2213 String str = mAssets.getResourceEntryName(resid); 2214 if (str != null) return str; 2215 throw new NotFoundException("Unable to find resource ID #0x" 2216 + Integer.toHexString(resid)); 2217 } 2218 2219 /** 2220 * Parse a series of {@link android.R.styleable#Extra <extra>} tags from 2221 * an XML file. You call this when you are at the parent tag of the 2222 * extra tags, and it will return once all of the child tags have been parsed. 2223 * This will call {@link #parseBundleExtra} for each extra tag encountered. 2224 * 2225 * @param parser The parser from which to retrieve the extras. 2226 * @param outBundle A Bundle in which to place all parsed extras. 2227 * @throws XmlPullParserException 2228 * @throws IOException 2229 */ 2230 public void parseBundleExtras(XmlResourceParser parser, Bundle outBundle) 2231 throws XmlPullParserException, IOException { 2232 int outerDepth = parser.getDepth(); 2233 int type; 2234 while ((type=parser.next()) != XmlPullParser.END_DOCUMENT 2235 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 2236 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 2237 continue; 2238 } 2239 2240 String nodeName = parser.getName(); 2241 if (nodeName.equals("extra")) { 2242 parseBundleExtra("extra", parser, outBundle); 2243 XmlUtils.skipCurrentTag(parser); 2244 2245 } else { 2246 XmlUtils.skipCurrentTag(parser); 2247 } 2248 } 2249 } 2250 2251 /** 2252 * Parse a name/value pair out of an XML tag holding that data. The 2253 * AttributeSet must be holding the data defined by 2254 * {@link android.R.styleable#Extra}. The following value types are supported: 2255 * <ul> 2256 * <li> {@link TypedValue#TYPE_STRING}: 2257 * {@link Bundle#putCharSequence Bundle.putCharSequence()} 2258 * <li> {@link TypedValue#TYPE_INT_BOOLEAN}: 2259 * {@link Bundle#putCharSequence Bundle.putBoolean()} 2260 * <li> {@link TypedValue#TYPE_FIRST_INT}-{@link TypedValue#TYPE_LAST_INT}: 2261 * {@link Bundle#putCharSequence Bundle.putBoolean()} 2262 * <li> {@link TypedValue#TYPE_FLOAT}: 2263 * {@link Bundle#putCharSequence Bundle.putFloat()} 2264 * </ul> 2265 * 2266 * @param tagName The name of the tag these attributes come from; this is 2267 * only used for reporting error messages. 2268 * @param attrs The attributes from which to retrieve the name/value pair. 2269 * @param outBundle The Bundle in which to place the parsed value. 2270 * @throws XmlPullParserException If the attributes are not valid. 2271 */ 2272 public void parseBundleExtra(String tagName, AttributeSet attrs, 2273 Bundle outBundle) throws XmlPullParserException { 2274 TypedArray sa = obtainAttributes(attrs, 2275 com.android.internal.R.styleable.Extra); 2276 2277 String name = sa.getString( 2278 com.android.internal.R.styleable.Extra_name); 2279 if (name == null) { 2280 sa.recycle(); 2281 throw new XmlPullParserException("<" + tagName 2282 + "> requires an android:name attribute at " 2283 + attrs.getPositionDescription()); 2284 } 2285 2286 TypedValue v = sa.peekValue( 2287 com.android.internal.R.styleable.Extra_value); 2288 if (v != null) { 2289 if (v.type == TypedValue.TYPE_STRING) { 2290 CharSequence cs = v.coerceToString(); 2291 outBundle.putCharSequence(name, cs); 2292 } else if (v.type == TypedValue.TYPE_INT_BOOLEAN) { 2293 outBundle.putBoolean(name, v.data != 0); 2294 } else if (v.type >= TypedValue.TYPE_FIRST_INT 2295 && v.type <= TypedValue.TYPE_LAST_INT) { 2296 outBundle.putInt(name, v.data); 2297 } else if (v.type == TypedValue.TYPE_FLOAT) { 2298 outBundle.putFloat(name, v.getFloat()); 2299 } else { 2300 sa.recycle(); 2301 throw new XmlPullParserException("<" + tagName 2302 + "> only supports string, integer, float, color, and boolean at " 2303 + attrs.getPositionDescription()); 2304 } 2305 } else { 2306 sa.recycle(); 2307 throw new XmlPullParserException("<" + tagName 2308 + "> requires an android:value or android:resource attribute at " 2309 + attrs.getPositionDescription()); 2310 } 2311 2312 sa.recycle(); 2313 } 2314 2315 /** 2316 * Retrieve underlying AssetManager storage for these resources. 2317 */ 2318 public final AssetManager getAssets() { 2319 return mAssets; 2320 } 2321 2322 /** 2323 * Call this to remove all cached loaded layout resources from the 2324 * Resources object. Only intended for use with performance testing 2325 * tools. 2326 */ 2327 public final void flushLayoutCache() { 2328 synchronized (mCachedXmlBlockIds) { 2329 // First see if this block is in our cache. 2330 final int num = mCachedXmlBlockIds.length; 2331 for (int i=0; i<num; i++) { 2332 mCachedXmlBlockIds[i] = -0; 2333 XmlBlock oldBlock = mCachedXmlBlocks[i]; 2334 if (oldBlock != null) { 2335 oldBlock.close(); 2336 } 2337 mCachedXmlBlocks[i] = null; 2338 } 2339 } 2340 } 2341 2342 /** 2343 * Start preloading of resource data using this Resources object. Only 2344 * for use by the zygote process for loading common system resources. 2345 * {@hide} 2346 */ 2347 public final void startPreloading() { 2348 synchronized (sSync) { 2349 if (sPreloaded) { 2350 throw new IllegalStateException("Resources already preloaded"); 2351 } 2352 sPreloaded = true; 2353 mPreloading = true; 2354 sPreloadedDensity = DisplayMetrics.DENSITY_DEVICE; 2355 mConfiguration.densityDpi = sPreloadedDensity; 2356 updateConfiguration(null, null); 2357 } 2358 } 2359 2360 /** 2361 * Called by zygote when it is done preloading resources, to change back 2362 * to normal Resources operation. 2363 */ 2364 public final void finishPreloading() { 2365 if (mPreloading) { 2366 mPreloading = false; 2367 flushLayoutCache(); 2368 } 2369 } 2370 2371 /** 2372 * @hide 2373 */ 2374 public LongSparseArray<ConstantState> getPreloadedDrawables() { 2375 return sPreloadedDrawables[0]; 2376 } 2377 2378 private boolean verifyPreloadConfig(int changingConfigurations, int allowVarying, 2379 int resourceId, String name) { 2380 // We allow preloading of resources even if they vary by font scale (which 2381 // doesn't impact resource selection) or density (which we handle specially by 2382 // simply turning off all preloading), as well as any other configs specified 2383 // by the caller. 2384 if (((changingConfigurations&~(ActivityInfo.CONFIG_FONT_SCALE | 2385 ActivityInfo.CONFIG_DENSITY)) & ~allowVarying) != 0) { 2386 String resName; 2387 try { 2388 resName = getResourceName(resourceId); 2389 } catch (NotFoundException e) { 2390 resName = "?"; 2391 } 2392 // This should never happen in production, so we should log a 2393 // warning even if we're not debugging. 2394 Log.w(TAG, "Preloaded " + name + " resource #0x" 2395 + Integer.toHexString(resourceId) 2396 + " (" + resName + ") that varies with configuration!!"); 2397 return false; 2398 } 2399 if (TRACE_FOR_PRELOAD) { 2400 String resName; 2401 try { 2402 resName = getResourceName(resourceId); 2403 } catch (NotFoundException e) { 2404 resName = "?"; 2405 } 2406 Log.w(TAG, "Preloading " + name + " resource #0x" 2407 + Integer.toHexString(resourceId) 2408 + " (" + resName + ")"); 2409 } 2410 return true; 2411 } 2412 2413 /*package*/ Drawable loadDrawable(TypedValue value, int id, Theme theme) throws NotFoundException { 2414 if (TRACE_FOR_PRELOAD) { 2415 // Log only framework resources 2416 if ((id >>> 24) == 0x1) { 2417 final String name = getResourceName(id); 2418 if (name != null) { 2419 Log.d("PreloadDrawable", name); 2420 } 2421 } 2422 } 2423 2424 final boolean isColorDrawable; 2425 final ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches; 2426 final long key; 2427 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT 2428 && value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2429 isColorDrawable = true; 2430 caches = mColorDrawableCache; 2431 key = value.data; 2432 } else { 2433 isColorDrawable = false; 2434 caches = mDrawableCache; 2435 key = (((long) value.assetCookie) << 32) | value.data; 2436 } 2437 2438 // First, check whether we have a cached version of this drawable 2439 // that was inflated against the specified theme. 2440 if (!mPreloading) { 2441 final Drawable cachedDrawable = getCachedDrawable(caches, key, theme); 2442 if (cachedDrawable != null) { 2443 return cachedDrawable; 2444 } 2445 } 2446 2447 // Next, check preloaded drawables. These may contain unresolved theme 2448 // attributes. 2449 final ConstantState cs; 2450 if (isColorDrawable) { 2451 cs = sPreloadedColorDrawables.get(key); 2452 } else { 2453 cs = sPreloadedDrawables[mConfiguration.getLayoutDirection()].get(key); 2454 } 2455 2456 Drawable dr; 2457 if (cs != null) { 2458 dr = cs.newDrawable(this); 2459 } else if (isColorDrawable) { 2460 dr = new ColorDrawable(value.data); 2461 } else { 2462 dr = loadDrawableForCookie(value, id, null); 2463 } 2464 2465 // Determine if the drawable has unresolved theme attributes. If it 2466 // does, we'll need to apply a theme and store it in a theme-specific 2467 // cache. 2468 final String cacheKey; 2469 if (!dr.canApplyTheme()) { 2470 cacheKey = CACHE_NOT_THEMED; 2471 } else if (theme == null) { 2472 cacheKey = CACHE_NULL_THEME; 2473 } else { 2474 cacheKey = theme.getKey(); 2475 dr = dr.mutate(); 2476 dr.applyTheme(theme); 2477 dr.clearMutated(); 2478 } 2479 2480 // If we were able to obtain a drawable, store it in the appropriate 2481 // cache: preload, not themed, null theme, or theme-specific. 2482 if (dr != null) { 2483 dr.setChangingConfigurations(value.changingConfigurations); 2484 cacheDrawable(value, isColorDrawable, caches, cacheKey, key, dr); 2485 } 2486 2487 return dr; 2488 } 2489 2490 private void cacheDrawable(TypedValue value, boolean isColorDrawable, 2491 ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches, 2492 String cacheKey, long key, Drawable dr) { 2493 final ConstantState cs = dr.getConstantState(); 2494 if (cs == null) { 2495 return; 2496 } 2497 2498 if (mPreloading) { 2499 final int changingConfigs = cs.getChangingConfigurations(); 2500 if (isColorDrawable) { 2501 if (verifyPreloadConfig(changingConfigs, 0, value.resourceId, "drawable")) { 2502 sPreloadedColorDrawables.put(key, cs); 2503 } 2504 } else { 2505 if (verifyPreloadConfig( 2506 changingConfigs, LAYOUT_DIR_CONFIG, value.resourceId, "drawable")) { 2507 if ((changingConfigs & LAYOUT_DIR_CONFIG) == 0) { 2508 // If this resource does not vary based on layout direction, 2509 // we can put it in all of the preload maps. 2510 sPreloadedDrawables[0].put(key, cs); 2511 sPreloadedDrawables[1].put(key, cs); 2512 } else { 2513 // Otherwise, only in the layout dir we loaded it for. 2514 sPreloadedDrawables[mConfiguration.getLayoutDirection()].put(key, cs); 2515 } 2516 } 2517 } 2518 } else { 2519 synchronized (mAccessLock) { 2520 LongSparseArray<WeakReference<ConstantState>> themedCache = caches.get(cacheKey); 2521 if (themedCache == null) { 2522 // Clean out the caches before we add more. This shouldn't 2523 // happen very often. 2524 pruneCaches(caches); 2525 themedCache = new LongSparseArray<>(1); 2526 caches.put(cacheKey, themedCache); 2527 } 2528 themedCache.put(key, new WeakReference<>(cs)); 2529 } 2530 } 2531 } 2532 2533 /** 2534 * Prunes empty caches from the cache map. 2535 * 2536 * @param caches The map of caches to prune. 2537 */ 2538 private void pruneCaches(ArrayMap<String, 2539 LongSparseArray<WeakReference<ConstantState>>> caches) { 2540 final int N = caches.size(); 2541 for (int i = N - 1; i >= 0; i--) { 2542 final LongSparseArray<WeakReference<ConstantState>> cache = caches.valueAt(i); 2543 if (pruneCache(cache)) { 2544 caches.removeAt(i); 2545 } 2546 } 2547 } 2548 2549 /** 2550 * Prunes obsolete weak references from a cache, returning {@code true} if 2551 * the cache is empty and should be removed. 2552 * 2553 * @param cache The cache of weak references to prune. 2554 * @return {@code true} if the cache is empty and should be removed. 2555 */ 2556 private boolean pruneCache(LongSparseArray<WeakReference<ConstantState>> cache) { 2557 final int N = cache.size(); 2558 for (int i = N - 1; i >= 0; i--) { 2559 final WeakReference entry = cache.valueAt(i); 2560 if (entry == null || entry.get() == null) { 2561 cache.removeAt(i); 2562 } 2563 } 2564 return cache.size() == 0; 2565 } 2566 2567 /** 2568 * Loads a drawable from XML or resources stream. 2569 */ 2570 private Drawable loadDrawableForCookie(TypedValue value, int id, Theme theme) { 2571 if (value.string == null) { 2572 throw new NotFoundException("Resource \"" + getResourceName(id) + "\" (" 2573 + Integer.toHexString(id) + ") is not a Drawable (color or path): " + value); 2574 } 2575 2576 final String file = value.string.toString(); 2577 2578 if (TRACE_FOR_MISS_PRELOAD) { 2579 // Log only framework resources 2580 if ((id >>> 24) == 0x1) { 2581 final String name = getResourceName(id); 2582 if (name != null) { 2583 Log.d(TAG, "Loading framework drawable #" + Integer.toHexString(id) 2584 + ": " + name + " at " + file); 2585 } 2586 } 2587 } 2588 2589 if (DEBUG_LOAD) { 2590 Log.v(TAG, "Loading drawable for cookie " + value.assetCookie + ": " + file); 2591 } 2592 2593 final Drawable dr; 2594 2595 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 2596 try { 2597 if (file.endsWith(".xml")) { 2598 final XmlResourceParser rp = loadXmlResourceParser( 2599 file, id, value.assetCookie, "drawable"); 2600 dr = Drawable.createFromXml(this, rp, theme); 2601 rp.close(); 2602 } else { 2603 final InputStream is = mAssets.openNonAsset( 2604 value.assetCookie, file, AssetManager.ACCESS_STREAMING); 2605 dr = Drawable.createFromResourceStream(this, value, is, file, null); 2606 is.close(); 2607 } 2608 } catch (Exception e) { 2609 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2610 final NotFoundException rnf = new NotFoundException( 2611 "File " + file + " from drawable resource ID #0x" + Integer.toHexString(id)); 2612 rnf.initCause(e); 2613 throw rnf; 2614 } 2615 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2616 2617 return dr; 2618 } 2619 2620 private Drawable getCachedDrawable( 2621 ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches, 2622 long key, Theme theme) { 2623 synchronized (mAccessLock) { 2624 // First search theme-agnostic cache. 2625 final Drawable unthemedDrawable = getCachedDrawableLocked( 2626 caches, key, CACHE_NOT_THEMED); 2627 if (unthemedDrawable != null) { 2628 return unthemedDrawable; 2629 } 2630 2631 // Next search theme-specific cache. 2632 final String themeKey = theme != null ? theme.getKey() : CACHE_NULL_THEME; 2633 return getCachedDrawableLocked(caches, key, themeKey); 2634 } 2635 } 2636 2637 private Drawable getCachedDrawableLocked( 2638 ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches, 2639 long key, String themeKey) { 2640 final LongSparseArray<WeakReference<ConstantState>> cache = caches.get(themeKey); 2641 if (cache != null) { 2642 final ConstantState entry = getConstantStateLocked(cache, key); 2643 if (entry != null) { 2644 return entry.newDrawable(this); 2645 } 2646 } 2647 return null; 2648 } 2649 2650 private ConstantState getConstantStateLocked( 2651 LongSparseArray<WeakReference<ConstantState>> drawableCache, long key) { 2652 final WeakReference<ConstantState> wr = drawableCache.get(key); 2653 if (wr != null) { 2654 final ConstantState entry = wr.get(); 2655 if (entry != null) { 2656 return entry; 2657 } else { 2658 // Our entry has been purged. 2659 drawableCache.delete(key); 2660 } 2661 } 2662 return null; 2663 } 2664 2665 @Nullable 2666 ColorStateList loadColorStateList(TypedValue value, int id, Theme theme) 2667 throws NotFoundException { 2668 if (TRACE_FOR_PRELOAD) { 2669 // Log only framework resources 2670 if ((id >>> 24) == 0x1) { 2671 final String name = getResourceName(id); 2672 if (name != null) android.util.Log.d("PreloadColorStateList", name); 2673 } 2674 } 2675 2676 final long key = (((long) value.assetCookie) << 32) | value.data; 2677 2678 ColorStateList csl; 2679 2680 // Handle inline color definitions. 2681 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT 2682 && value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2683 final android.content.res.ConstantState<ColorStateList> factory = 2684 sPreloadedColorStateLists.get(key); 2685 if (factory != null) { 2686 return factory.newInstance(); 2687 } 2688 2689 csl = ColorStateList.valueOf(value.data); 2690 2691 if (mPreloading) { 2692 if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId, 2693 "color")) { 2694 sPreloadedColorStateLists.put(key, csl.getConstantState()); 2695 } 2696 } 2697 2698 return csl; 2699 } 2700 2701 final ConfigurationBoundResourceCache<ColorStateList> cache = mColorStateListCache; 2702 2703 csl = cache.get(key, theme); 2704 if (csl != null) { 2705 return csl; 2706 } 2707 2708 final android.content.res.ConstantState<ColorStateList> factory = 2709 sPreloadedColorStateLists.get(key); 2710 if (factory != null) { 2711 csl = factory.newInstance(this, theme); 2712 } 2713 2714 if (csl == null) { 2715 csl = loadColorStateListForCookie(value, id, theme); 2716 } 2717 2718 if (csl != null) { 2719 if (mPreloading) { 2720 if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId, 2721 "color")) { 2722 sPreloadedColorStateLists.put(key, csl.getConstantState()); 2723 } 2724 } else { 2725 cache.put(key, theme, csl.getConstantState()); 2726 } 2727 } 2728 2729 return csl; 2730 } 2731 2732 private ColorStateList loadColorStateListForCookie(TypedValue value, int id, Theme theme) { 2733 if (value.string == null) { 2734 throw new UnsupportedOperationException( 2735 "Can't convert to color state list: type=0x" + value.type); 2736 } 2737 2738 final String file = value.string.toString(); 2739 2740 if (TRACE_FOR_MISS_PRELOAD) { 2741 // Log only framework resources 2742 if ((id >>> 24) == 0x1) { 2743 final String name = getResourceName(id); 2744 if (name != null) { 2745 Log.d(TAG, "Loading framework color state list #" + Integer.toHexString(id) 2746 + ": " + name + " at " + file); 2747 } 2748 } 2749 } 2750 2751 if (DEBUG_LOAD) { 2752 Log.v(TAG, "Loading color state list for cookie " + value.assetCookie + ": " + file); 2753 } 2754 2755 final ColorStateList csl; 2756 2757 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 2758 if (file.endsWith(".xml")) { 2759 try { 2760 final XmlResourceParser rp = loadXmlResourceParser( 2761 file, id, value.assetCookie, "colorstatelist"); 2762 csl = ColorStateList.createFromXml(this, rp, theme); 2763 rp.close(); 2764 } catch (Exception e) { 2765 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2766 final NotFoundException rnf = new NotFoundException( 2767 "File " + file + " from color state list resource ID #0x" 2768 + Integer.toHexString(id)); 2769 rnf.initCause(e); 2770 throw rnf; 2771 } 2772 } else { 2773 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2774 throw new NotFoundException( 2775 "File " + file + " from drawable resource ID #0x" 2776 + Integer.toHexString(id) + ": .xml extension required"); 2777 } 2778 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2779 2780 return csl; 2781 } 2782 2783 /*package*/ XmlResourceParser loadXmlResourceParser(int id, String type) 2784 throws NotFoundException { 2785 synchronized (mAccessLock) { 2786 TypedValue value = mTmpValue; 2787 if (value == null) { 2788 mTmpValue = value = new TypedValue(); 2789 } 2790 getValue(id, value, true); 2791 if (value.type == TypedValue.TYPE_STRING) { 2792 return loadXmlResourceParser(value.string.toString(), id, 2793 value.assetCookie, type); 2794 } 2795 throw new NotFoundException( 2796 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 2797 + Integer.toHexString(value.type) + " is not valid"); 2798 } 2799 } 2800 2801 /*package*/ XmlResourceParser loadXmlResourceParser(String file, int id, 2802 int assetCookie, String type) throws NotFoundException { 2803 if (id != 0) { 2804 try { 2805 // These may be compiled... 2806 synchronized (mCachedXmlBlockIds) { 2807 // First see if this block is in our cache. 2808 final int num = mCachedXmlBlockIds.length; 2809 for (int i=0; i<num; i++) { 2810 if (mCachedXmlBlockIds[i] == id) { 2811 //System.out.println("**** REUSING XML BLOCK! id=" 2812 // + id + ", index=" + i); 2813 return mCachedXmlBlocks[i].newParser(); 2814 } 2815 } 2816 2817 // Not in the cache, create a new block and put it at 2818 // the next slot in the cache. 2819 XmlBlock block = mAssets.openXmlBlockAsset( 2820 assetCookie, file); 2821 if (block != null) { 2822 int pos = mLastCachedXmlBlockIndex+1; 2823 if (pos >= num) pos = 0; 2824 mLastCachedXmlBlockIndex = pos; 2825 XmlBlock oldBlock = mCachedXmlBlocks[pos]; 2826 if (oldBlock != null) { 2827 oldBlock.close(); 2828 } 2829 mCachedXmlBlockIds[pos] = id; 2830 mCachedXmlBlocks[pos] = block; 2831 //System.out.println("**** CACHING NEW XML BLOCK! id=" 2832 // + id + ", index=" + pos); 2833 return block.newParser(); 2834 } 2835 } 2836 } catch (Exception e) { 2837 NotFoundException rnf = new NotFoundException( 2838 "File " + file + " from xml type " + type + " resource ID #0x" 2839 + Integer.toHexString(id)); 2840 rnf.initCause(e); 2841 throw rnf; 2842 } 2843 } 2844 2845 throw new NotFoundException( 2846 "File " + file + " from xml type " + type + " resource ID #0x" 2847 + Integer.toHexString(id)); 2848 } 2849 2850 /** 2851 * Obtains styled attributes from the theme, if available, or unstyled 2852 * resources if the theme is null. 2853 * 2854 * @hide 2855 */ 2856 public static TypedArray obtainAttributes( 2857 Resources res, Theme theme, AttributeSet set, int[] attrs) { 2858 if (theme == null) { 2859 return res.obtainAttributes(set, attrs); 2860 } 2861 return theme.obtainStyledAttributes(set, attrs, 0, 0); 2862 } 2863 2864 private Resources() { 2865 mAssets = AssetManager.getSystem(); 2866 // NOTE: Intentionally leaving this uninitialized (all values set 2867 // to zero), so that anyone who tries to do something that requires 2868 // metrics will get a very wrong value. 2869 mConfiguration.setToDefaults(); 2870 mMetrics.setToDefaults(); 2871 updateConfiguration(null, null); 2872 mAssets.ensureStringBlocks(); 2873 } 2874} 2875