Resources.java revision 34a14f967ab6c88829c9a36ce6e909c47b3ee398
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.content.res; 18 19import com.android.internal.util.XmlUtils; 20 21import org.xmlpull.v1.XmlPullParser; 22import org.xmlpull.v1.XmlPullParserException; 23 24import android.annotation.Nullable; 25import android.content.pm.ActivityInfo; 26import android.graphics.Movie; 27import android.graphics.drawable.Drawable; 28import android.graphics.drawable.ColorDrawable; 29import android.graphics.drawable.Drawable.ConstantState; 30import android.os.Build; 31import android.os.Bundle; 32import android.os.IBinder; 33import android.os.Trace; 34import android.util.ArrayMap; 35import android.util.AttributeSet; 36import android.util.DisplayMetrics; 37import android.util.Log; 38import android.util.Slog; 39import android.util.TypedValue; 40import android.util.LongSparseArray; 41 42import java.io.IOException; 43import java.io.InputStream; 44import java.lang.ref.WeakReference; 45import java.util.Locale; 46 47import libcore.icu.NativePluralRules; 48 49/** 50 * Class for accessing an application's resources. This sits on top of the 51 * asset manager of the application (accessible through {@link #getAssets}) and 52 * provides a high-level API for getting typed data from the assets. 53 * 54 * <p>The Android resource system keeps track of all non-code assets associated with an 55 * application. You can use this class to access your application's resources. You can generally 56 * acquire the {@link android.content.res.Resources} instance associated with your application 57 * with {@link android.content.Context#getResources getResources()}.</p> 58 * 59 * <p>The Android SDK tools compile your application's resources into the application binary 60 * at build time. To use a resource, you must install it correctly in the source tree (inside 61 * your project's {@code res/} directory) and build your application. As part of the build 62 * process, the SDK tools generate symbols for each resource, which you can use in your application 63 * code to access the resources.</p> 64 * 65 * <p>Using application resources makes it easy to update various characteristics of your 66 * application without modifying code, and—by providing sets of alternative 67 * resources—enables you to optimize your application for a variety of device configurations 68 * (such as for different languages and screen sizes). This is an important aspect of developing 69 * Android applications that are compatible on different types of devices.</p> 70 * 71 * <p>For more information about using resources, see the documentation about <a 72 * href="{@docRoot}guide/topics/resources/index.html">Application Resources</a>.</p> 73 */ 74public class Resources { 75 static final String TAG = "Resources"; 76 77 private static final boolean DEBUG_LOAD = false; 78 private static final boolean DEBUG_CONFIG = false; 79 private static final boolean TRACE_FOR_PRELOAD = false; 80 private static final boolean TRACE_FOR_MISS_PRELOAD = false; 81 82 private static final int LAYOUT_DIR_CONFIG = ActivityInfo.activityInfoConfigToNative( 83 ActivityInfo.CONFIG_LAYOUT_DIRECTION); 84 85 private static final int ID_OTHER = 0x01000004; 86 87 private static final Object sSync = new Object(); 88 89 // Information about preloaded resources. Note that they are not 90 // protected by a lock, because while preloading in zygote we are all 91 // single-threaded, and after that these are immutable. 92 private static final LongSparseArray<ConstantState>[] sPreloadedDrawables; 93 private static final LongSparseArray<ConstantState> sPreloadedColorDrawables 94 = new LongSparseArray<ConstantState>(); 95 private static final LongSparseArray<ColorStateList> sPreloadedColorStateLists 96 = new LongSparseArray<ColorStateList>(); 97 98 // Used by BridgeResources in layoutlib 99 static Resources mSystem = null; 100 101 private static boolean sPreloaded; 102 private static int sPreloadedDensity; 103 104 // These are protected by mAccessLock. 105 private final Object mAccessLock = new Object(); 106 private final Configuration mTmpConfig = new Configuration(); 107 private final ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> mDrawableCache = 108 new ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>>(); 109 private final ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> mColorDrawableCache = 110 new ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>>(); 111 private final LongSparseArray<WeakReference<ColorStateList>> mColorStateListCache = 112 new LongSparseArray<WeakReference<ColorStateList>>(); 113 114 private TypedValue mTmpValue = new TypedValue(); 115 private boolean mPreloading; 116 117 private TypedArray mCachedStyledAttributes = null; 118 119 private int mLastCachedXmlBlockIndex = -1; 120 private final int[] mCachedXmlBlockIds = { 0, 0, 0, 0 }; 121 private final XmlBlock[] mCachedXmlBlocks = new XmlBlock[4]; 122 123 private final AssetManager mAssets; 124 private final Configuration mConfiguration = new Configuration(); 125 private final DisplayMetrics mMetrics = new DisplayMetrics(); 126 private NativePluralRules mPluralRule; 127 128 private CompatibilityInfo mCompatibilityInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 129 130 @SuppressWarnings("unused") 131 private WeakReference<IBinder> mToken; 132 133 static { 134 sPreloadedDrawables = new LongSparseArray[2]; 135 sPreloadedDrawables[0] = new LongSparseArray<ConstantState>(); 136 sPreloadedDrawables[1] = new LongSparseArray<ConstantState>(); 137 } 138 139 /** 140 * Returns the most appropriate default theme for the specified target SDK version. 141 * <ul> 142 * <li>Below API 11: Gingerbread 143 * <li>APIs 11 thru 14: Holo 144 * <li>APIs 14 thru XX: Device default dark 145 * <li>API XX and above: Device default light with dark action bar 146 * </ul> 147 * 148 * @param curTheme The current theme, or 0 if not specified. 149 * @param targetSdkVersion The target SDK version. 150 * @return A theme resource identifier 151 * @hide 152 */ 153 public static int selectDefaultTheme(int curTheme, int targetSdkVersion) { 154 return selectSystemTheme(curTheme, targetSdkVersion, 155 com.android.internal.R.style.Theme, 156 com.android.internal.R.style.Theme_Holo, 157 com.android.internal.R.style.Theme_DeviceDefault, 158 com.android.internal.R.style.Theme_DeviceDefault_Light_DarkActionBar); 159 } 160 161 /** @hide */ 162 public static int selectSystemTheme(int curTheme, int targetSdkVersion, int orig, int holo, 163 int dark, int deviceDefault) { 164 if (curTheme != 0) { 165 return curTheme; 166 } 167 if (targetSdkVersion < Build.VERSION_CODES.HONEYCOMB) { 168 return orig; 169 } 170 if (targetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 171 return holo; 172 } 173 if (targetSdkVersion < Build.VERSION_CODES.CUR_DEVELOPMENT) { 174 return dark; 175 } 176 return deviceDefault; 177 } 178 179 /** 180 * This exception is thrown by the resource APIs when a requested resource 181 * can not be found. 182 */ 183 public static class NotFoundException extends RuntimeException { 184 public NotFoundException() { 185 } 186 187 public NotFoundException(String name) { 188 super(name); 189 } 190 } 191 192 /** 193 * Create a new Resources object on top of an existing set of assets in an 194 * AssetManager. 195 * 196 * @param assets Previously created AssetManager. 197 * @param metrics Current display metrics to consider when 198 * selecting/computing resource values. 199 * @param config Desired device configuration to consider when 200 * selecting/computing resource values (optional). 201 */ 202 public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config) { 203 this(assets, metrics, config, CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO, null); 204 } 205 206 /** 207 * Creates a new Resources object with CompatibilityInfo. 208 * 209 * @param assets Previously created AssetManager. 210 * @param metrics Current display metrics to consider when 211 * selecting/computing resource values. 212 * @param config Desired device configuration to consider when 213 * selecting/computing resource values (optional). 214 * @param compatInfo this resource's compatibility info. Must not be null. 215 * @param token The Activity token for determining stack affiliation. Usually null. 216 * @hide 217 */ 218 public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config, 219 CompatibilityInfo compatInfo, IBinder token) { 220 mAssets = assets; 221 mMetrics.setToDefaults(); 222 if (compatInfo != null) { 223 mCompatibilityInfo = compatInfo; 224 } 225 mToken = new WeakReference<IBinder>(token); 226 updateConfiguration(config, metrics); 227 assets.ensureStringBlocks(); 228 } 229 230 /** 231 * Return a global shared Resources object that provides access to only 232 * system resources (no application resources), and is not configured for 233 * the current screen (can not use dimension units, does not change based 234 * on orientation, etc). 235 */ 236 public static Resources getSystem() { 237 synchronized (sSync) { 238 Resources ret = mSystem; 239 if (ret == null) { 240 ret = new Resources(); 241 mSystem = ret; 242 } 243 244 return ret; 245 } 246 } 247 248 /** 249 * Return the string value associated with a particular resource ID. The 250 * returned object will be a String if this is a plain string; it will be 251 * some other type of CharSequence if it is styled. 252 * {@more} 253 * 254 * @param id The desired resource identifier, as generated by the aapt 255 * tool. This integer encodes the package, type, and resource 256 * entry. The value 0 is an invalid identifier. 257 * 258 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 259 * 260 * @return CharSequence The string data associated with the resource, plus 261 * possibly styled text information. 262 */ 263 public CharSequence getText(int id) throws NotFoundException { 264 CharSequence res = mAssets.getResourceText(id); 265 if (res != null) { 266 return res; 267 } 268 throw new NotFoundException("String resource ID #0x" 269 + Integer.toHexString(id)); 270 } 271 272 /** 273 * Returns the character sequence necessary for grammatically correct pluralization 274 * of the given resource ID for the given quantity. 275 * Note that the character sequence is selected based solely on grammatical necessity, 276 * and that such rules differ between languages. Do not assume you know which string 277 * will be returned for a given quantity. See 278 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 279 * for more detail. 280 * 281 * @param id The desired resource identifier, as generated by the aapt 282 * tool. This integer encodes the package, type, and resource 283 * entry. The value 0 is an invalid identifier. 284 * @param quantity The number used to get the correct string for the current language's 285 * plural rules. 286 * 287 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 288 * 289 * @return CharSequence The string data associated with the resource, plus 290 * possibly styled text information. 291 */ 292 public CharSequence getQuantityText(int id, int quantity) throws NotFoundException { 293 NativePluralRules rule = getPluralRule(); 294 CharSequence res = mAssets.getResourceBagText(id, 295 attrForQuantityCode(rule.quantityForInt(quantity))); 296 if (res != null) { 297 return res; 298 } 299 res = mAssets.getResourceBagText(id, ID_OTHER); 300 if (res != null) { 301 return res; 302 } 303 throw new NotFoundException("Plural resource ID #0x" + Integer.toHexString(id) 304 + " quantity=" + quantity 305 + " item=" + stringForQuantityCode(rule.quantityForInt(quantity))); 306 } 307 308 private NativePluralRules getPluralRule() { 309 synchronized (sSync) { 310 if (mPluralRule == null) { 311 mPluralRule = NativePluralRules.forLocale(mConfiguration.locale); 312 } 313 return mPluralRule; 314 } 315 } 316 317 private static int attrForQuantityCode(int quantityCode) { 318 switch (quantityCode) { 319 case NativePluralRules.ZERO: return 0x01000005; 320 case NativePluralRules.ONE: return 0x01000006; 321 case NativePluralRules.TWO: return 0x01000007; 322 case NativePluralRules.FEW: return 0x01000008; 323 case NativePluralRules.MANY: return 0x01000009; 324 default: return ID_OTHER; 325 } 326 } 327 328 private static String stringForQuantityCode(int quantityCode) { 329 switch (quantityCode) { 330 case NativePluralRules.ZERO: return "zero"; 331 case NativePluralRules.ONE: return "one"; 332 case NativePluralRules.TWO: return "two"; 333 case NativePluralRules.FEW: return "few"; 334 case NativePluralRules.MANY: return "many"; 335 default: return "other"; 336 } 337 } 338 339 /** 340 * Return the string value associated with a particular resource ID. It 341 * will be stripped of any styled text information. 342 * {@more} 343 * 344 * @param id The desired resource identifier, as generated by the aapt 345 * tool. This integer encodes the package, type, and resource 346 * entry. The value 0 is an invalid identifier. 347 * 348 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 349 * 350 * @return String The string data associated with the resource, 351 * stripped of styled text information. 352 */ 353 public String getString(int id) throws NotFoundException { 354 CharSequence res = getText(id); 355 if (res != null) { 356 return res.toString(); 357 } 358 throw new NotFoundException("String resource ID #0x" 359 + Integer.toHexString(id)); 360 } 361 362 363 /** 364 * Return the string value associated with a particular resource ID, 365 * substituting the format arguments as defined in {@link java.util.Formatter} 366 * and {@link java.lang.String#format}. It will be stripped of any styled text 367 * information. 368 * {@more} 369 * 370 * @param id The desired resource identifier, as generated by the aapt 371 * tool. This integer encodes the package, type, and resource 372 * entry. The value 0 is an invalid identifier. 373 * 374 * @param formatArgs The format arguments that will be used for substitution. 375 * 376 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 377 * 378 * @return String The string data associated with the resource, 379 * stripped of styled text information. 380 */ 381 public String getString(int id, Object... formatArgs) throws NotFoundException { 382 String raw = getString(id); 383 return String.format(mConfiguration.locale, raw, formatArgs); 384 } 385 386 /** 387 * Formats the string necessary for grammatically correct pluralization 388 * of the given resource ID for the given quantity, using the given arguments. 389 * Note that the string is selected based solely on grammatical necessity, 390 * and that such rules differ between languages. Do not assume you know which string 391 * will be returned for a given quantity. See 392 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 393 * for more detail. 394 * 395 * <p>Substitution of format arguments works as if using 396 * {@link java.util.Formatter} and {@link java.lang.String#format}. 397 * The resulting string will be stripped of any styled text information. 398 * 399 * @param id The desired resource identifier, as generated by the aapt 400 * tool. This integer encodes the package, type, and resource 401 * entry. The value 0 is an invalid identifier. 402 * @param quantity The number used to get the correct string for the current language's 403 * plural rules. 404 * @param formatArgs The format arguments that will be used for substitution. 405 * 406 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 407 * 408 * @return String The string data associated with the resource, 409 * stripped of styled text information. 410 */ 411 public String getQuantityString(int id, int quantity, Object... formatArgs) 412 throws NotFoundException { 413 String raw = getQuantityText(id, quantity).toString(); 414 return String.format(mConfiguration.locale, raw, formatArgs); 415 } 416 417 /** 418 * Returns the string necessary for grammatically correct pluralization 419 * of the given resource ID for the given quantity. 420 * Note that the string is selected based solely on grammatical necessity, 421 * and that such rules differ between languages. Do not assume you know which string 422 * will be returned for a given quantity. See 423 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 424 * for more detail. 425 * 426 * @param id The desired resource identifier, as generated by the aapt 427 * tool. This integer encodes the package, type, and resource 428 * entry. The value 0 is an invalid identifier. 429 * @param quantity The number used to get the correct string for the current language's 430 * plural rules. 431 * 432 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 433 * 434 * @return String The string data associated with the resource, 435 * stripped of styled text information. 436 */ 437 public String getQuantityString(int id, int quantity) throws NotFoundException { 438 return getQuantityText(id, quantity).toString(); 439 } 440 441 /** 442 * Return the string value associated with a particular resource ID. The 443 * returned object will be a String if this is a plain string; it will be 444 * some other type of CharSequence if it is styled. 445 * 446 * @param id The desired resource identifier, as generated by the aapt 447 * tool. This integer encodes the package, type, and resource 448 * entry. The value 0 is an invalid identifier. 449 * 450 * @param def The default CharSequence to return. 451 * 452 * @return CharSequence The string data associated with the resource, plus 453 * possibly styled text information, or def if id is 0 or not found. 454 */ 455 public CharSequence getText(int id, CharSequence def) { 456 CharSequence res = id != 0 ? mAssets.getResourceText(id) : null; 457 return res != null ? res : def; 458 } 459 460 /** 461 * Return the styled text array associated with a particular resource ID. 462 * 463 * @param id The desired resource identifier, as generated by the aapt 464 * tool. This integer encodes the package, type, and resource 465 * entry. The value 0 is an invalid identifier. 466 * 467 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 468 * 469 * @return The styled text array associated with the resource. 470 */ 471 public CharSequence[] getTextArray(int id) throws NotFoundException { 472 CharSequence[] res = mAssets.getResourceTextArray(id); 473 if (res != null) { 474 return res; 475 } 476 throw new NotFoundException("Text array resource ID #0x" 477 + Integer.toHexString(id)); 478 } 479 480 /** 481 * Return the string array associated with a particular resource ID. 482 * 483 * @param id The desired resource identifier, as generated by the aapt 484 * tool. This integer encodes the package, type, and resource 485 * entry. The value 0 is an invalid identifier. 486 * 487 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 488 * 489 * @return The string array associated with the resource. 490 */ 491 public String[] getStringArray(int id) throws NotFoundException { 492 String[] res = mAssets.getResourceStringArray(id); 493 if (res != null) { 494 return res; 495 } 496 throw new NotFoundException("String array resource ID #0x" 497 + Integer.toHexString(id)); 498 } 499 500 /** 501 * Return the int array associated with a particular resource ID. 502 * 503 * @param id The desired resource identifier, as generated by the aapt 504 * tool. This integer encodes the package, type, and resource 505 * entry. The value 0 is an invalid identifier. 506 * 507 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 508 * 509 * @return The int array associated with the resource. 510 */ 511 public int[] getIntArray(int id) throws NotFoundException { 512 int[] res = mAssets.getArrayIntResource(id); 513 if (res != null) { 514 return res; 515 } 516 throw new NotFoundException("Int array resource ID #0x" 517 + Integer.toHexString(id)); 518 } 519 520 /** 521 * Return an array of heterogeneous values. 522 * 523 * @param id The desired resource identifier, as generated by the aapt 524 * tool. This integer encodes the package, type, and resource 525 * entry. The value 0 is an invalid identifier. 526 * 527 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 528 * 529 * @return Returns a TypedArray holding an array of the array values. 530 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 531 * when done with it. 532 */ 533 public TypedArray obtainTypedArray(int id) throws NotFoundException { 534 int len = mAssets.getArraySize(id); 535 if (len < 0) { 536 throw new NotFoundException("Array resource ID #0x" 537 + Integer.toHexString(id)); 538 } 539 540 TypedArray array = TypedArray.obtain(this, len); 541 array.mLength = mAssets.retrieveArray(id, array.mData); 542 array.mIndices[0] = 0; 543 544 return array; 545 } 546 547 /** 548 * Retrieve a dimensional for a particular resource ID. Unit 549 * conversions are based on the current {@link DisplayMetrics} associated 550 * with the resources. 551 * 552 * @param id The desired resource identifier, as generated by the aapt 553 * tool. This integer encodes the package, type, and resource 554 * entry. The value 0 is an invalid identifier. 555 * 556 * @return Resource dimension value multiplied by the appropriate 557 * metric. 558 * 559 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 560 * 561 * @see #getDimensionPixelOffset 562 * @see #getDimensionPixelSize 563 */ 564 public float getDimension(int id) throws NotFoundException { 565 synchronized (mAccessLock) { 566 TypedValue value = mTmpValue; 567 if (value == null) { 568 mTmpValue = value = new TypedValue(); 569 } 570 getValue(id, value, true); 571 if (value.type == TypedValue.TYPE_DIMENSION) { 572 return TypedValue.complexToDimension(value.data, mMetrics); 573 } 574 throw new NotFoundException( 575 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 576 + Integer.toHexString(value.type) + " is not valid"); 577 } 578 } 579 580 /** 581 * Retrieve a dimensional for a particular resource ID for use 582 * as an offset in raw pixels. This is the same as 583 * {@link #getDimension}, except the returned value is converted to 584 * integer pixels for you. An offset conversion involves simply 585 * truncating the base value to an integer. 586 * 587 * @param id The desired resource identifier, as generated by the aapt 588 * tool. This integer encodes the package, type, and resource 589 * entry. The value 0 is an invalid identifier. 590 * 591 * @return Resource dimension value multiplied by the appropriate 592 * metric and truncated to integer pixels. 593 * 594 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 595 * 596 * @see #getDimension 597 * @see #getDimensionPixelSize 598 */ 599 public int getDimensionPixelOffset(int id) throws NotFoundException { 600 synchronized (mAccessLock) { 601 TypedValue value = mTmpValue; 602 if (value == null) { 603 mTmpValue = value = new TypedValue(); 604 } 605 getValue(id, value, true); 606 if (value.type == TypedValue.TYPE_DIMENSION) { 607 return TypedValue.complexToDimensionPixelOffset( 608 value.data, mMetrics); 609 } 610 throw new NotFoundException( 611 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 612 + Integer.toHexString(value.type) + " is not valid"); 613 } 614 } 615 616 /** 617 * Retrieve a dimensional for a particular resource ID for use 618 * as a size in raw pixels. This is the same as 619 * {@link #getDimension}, except the returned value is converted to 620 * integer pixels for use as a size. A size conversion involves 621 * rounding the base value, and ensuring that a non-zero base value 622 * is at least one pixel in size. 623 * 624 * @param id The desired resource identifier, as generated by the aapt 625 * tool. This integer encodes the package, type, and resource 626 * entry. The value 0 is an invalid identifier. 627 * 628 * @return Resource dimension value multiplied by the appropriate 629 * metric and truncated to integer pixels. 630 * 631 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 632 * 633 * @see #getDimension 634 * @see #getDimensionPixelOffset 635 */ 636 public int getDimensionPixelSize(int id) throws NotFoundException { 637 synchronized (mAccessLock) { 638 TypedValue value = mTmpValue; 639 if (value == null) { 640 mTmpValue = value = new TypedValue(); 641 } 642 getValue(id, value, true); 643 if (value.type == TypedValue.TYPE_DIMENSION) { 644 return TypedValue.complexToDimensionPixelSize( 645 value.data, mMetrics); 646 } 647 throw new NotFoundException( 648 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 649 + Integer.toHexString(value.type) + " is not valid"); 650 } 651 } 652 653 /** 654 * Retrieve a fractional unit for a particular resource ID. 655 * 656 * @param id The desired resource identifier, as generated by the aapt 657 * tool. This integer encodes the package, type, and resource 658 * entry. The value 0 is an invalid identifier. 659 * @param base The base value of this fraction. In other words, a 660 * standard fraction is multiplied by this value. 661 * @param pbase The parent base value of this fraction. In other 662 * words, a parent fraction (nn%p) is multiplied by this 663 * value. 664 * 665 * @return Attribute fractional value multiplied by the appropriate 666 * base value. 667 * 668 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 669 */ 670 public float getFraction(int id, int base, int pbase) { 671 synchronized (mAccessLock) { 672 TypedValue value = mTmpValue; 673 if (value == null) { 674 mTmpValue = value = new TypedValue(); 675 } 676 getValue(id, value, true); 677 if (value.type == TypedValue.TYPE_FRACTION) { 678 return TypedValue.complexToFraction(value.data, base, pbase); 679 } 680 throw new NotFoundException( 681 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 682 + Integer.toHexString(value.type) + " is not valid"); 683 } 684 } 685 686 /** 687 * Return a drawable object associated with a particular resource ID. 688 * Various types of objects will be returned depending on the underlying 689 * resource -- for example, a solid color, PNG image, scalable image, etc. 690 * The Drawable API hides these implementation details. 691 * 692 * <p class="note"><strong>Note:</strong> Prior to 693 * {@link android.os.Build.VERSION_CODES#JELLY_BEAN}, this function 694 * would not correctly retrieve the final configuration density when 695 * the resource ID passed here is an alias to another Drawable resource. 696 * This means that if the density configuration of the alias resource 697 * is different than the actual resource, the density of the returned 698 * Drawable would be incorrect, resulting in bad scaling. To work 699 * around this, you can instead retrieve the Drawable through 700 * {@link TypedArray#getDrawable TypedArray.getDrawable}. Use 701 * {@link android.content.Context#obtainStyledAttributes(int[]) 702 * Context.obtainStyledAttributes} with 703 * an array containing the resource ID of interest to create the TypedArray.</p> 704 * 705 * <p class="note"><strong>Note:</strong> To obtain a themed drawable, use 706 * {@link android.content.Context#getDrawable(int) Context.getDrawable(int)} 707 * or {@link #getDrawable(int, Theme)} passing the desired theme.</p> 708 * 709 * @param id The desired resource identifier, as generated by the aapt 710 * tool. This integer encodes the package, type, and resource 711 * entry. The value 0 is an invalid identifier. 712 * @return Drawable An object that can be used to draw this resource. 713 * @throws NotFoundException Throws NotFoundException if the given ID does 714 * not exist. 715 * @see #getDrawable(int, Theme) 716 */ 717 public Drawable getDrawable(int id) throws NotFoundException { 718 final Drawable d = getDrawable(id, null); 719 if (d.canApplyTheme()) { 720 Log.w(TAG, "Drawable " + getResourceName(id) + " has unresolved theme " 721 + "attributes! Consider using Resources.getDrawable(int, Theme) or " 722 + "Context.getDrawable(int).", new RuntimeException()); 723 } 724 return d; 725 } 726 727 /** 728 * Return a drawable object associated with a particular resource ID and 729 * styled for the specified theme. Various types of objects will be 730 * returned depending on the underlying resource -- for example, a solid 731 * color, PNG image, scalable image, etc. 732 * 733 * @param id The desired resource identifier, as generated by the aapt 734 * tool. This integer encodes the package, type, and resource 735 * entry. The value 0 is an invalid identifier. 736 * @param theme The theme used to style the drawable attributes, may be {@code null}. 737 * @return Drawable An object that can be used to draw this resource. 738 * @throws NotFoundException Throws NotFoundException if the given ID does 739 * not exist. 740 */ 741 public Drawable getDrawable(int id, @Nullable Theme theme) throws NotFoundException { 742 TypedValue value; 743 synchronized (mAccessLock) { 744 value = mTmpValue; 745 if (value == null) { 746 value = new TypedValue(); 747 } else { 748 mTmpValue = null; 749 } 750 getValue(id, value, true); 751 } 752 final Drawable res = loadDrawable(value, id, theme); 753 synchronized (mAccessLock) { 754 if (mTmpValue == null) { 755 mTmpValue = value; 756 } 757 } 758 return res; 759 } 760 761 /** 762 * Return a drawable object associated with a particular resource ID for the 763 * given screen density in DPI. This will set the drawable's density to be 764 * the device's density multiplied by the ratio of actual drawable density 765 * to requested density. This allows the drawable to be scaled up to the 766 * correct size if needed. Various types of objects will be returned 767 * depending on the underlying resource -- for example, a solid color, PNG 768 * image, scalable image, etc. The Drawable API hides these implementation 769 * details. 770 * 771 * <p class="note"><strong>Note:</strong> To obtain a themed drawable, use 772 * {@link android.content.Context#getDrawable(int) Context.getDrawable(int)} 773 * or {@link #getDrawableForDensity(int, int, Theme)} passing the desired 774 * theme.</p> 775 * 776 * @param id The desired resource identifier, as generated by the aapt tool. 777 * This integer encodes the package, type, and resource entry. 778 * The value 0 is an invalid identifier. 779 * @param density the desired screen density indicated by the resource as 780 * found in {@link DisplayMetrics}. 781 * @return Drawable An object that can be used to draw this resource. 782 * @throws NotFoundException Throws NotFoundException if the given ID does 783 * not exist. 784 * @see #getDrawableForDensity(int, int, Theme) 785 */ 786 public Drawable getDrawableForDensity(int id, int density) throws NotFoundException { 787 return getDrawableForDensity(id, density, null); 788 } 789 790 /** 791 * Return a drawable object associated with a particular resource ID for the 792 * given screen density in DPI and styled for the specified theme. 793 * 794 * @param id The desired resource identifier, as generated by the aapt tool. 795 * This integer encodes the package, type, and resource entry. 796 * The value 0 is an invalid identifier. 797 * @param density The desired screen density indicated by the resource as 798 * found in {@link DisplayMetrics}. 799 * @param theme The theme used to style the drawable attributes, may be {@code null}. 800 * @return Drawable An object that can be used to draw this resource. 801 * @throws NotFoundException Throws NotFoundException if the given ID does 802 * not exist. 803 */ 804 public Drawable getDrawableForDensity(int id, int density, @Nullable Theme theme) { 805 TypedValue value; 806 synchronized (mAccessLock) { 807 value = mTmpValue; 808 if (value == null) { 809 value = new TypedValue(); 810 } else { 811 mTmpValue = null; 812 } 813 getValueForDensity(id, density, value, true); 814 815 /* 816 * Pretend the requested density is actually the display density. If 817 * the drawable returned is not the requested density, then force it 818 * to be scaled later by dividing its density by the ratio of 819 * requested density to actual device density. Drawables that have 820 * undefined density or no density don't need to be handled here. 821 */ 822 if (value.density > 0 && value.density != TypedValue.DENSITY_NONE) { 823 if (value.density == density) { 824 value.density = mMetrics.densityDpi; 825 } else { 826 value.density = (value.density * mMetrics.densityDpi) / density; 827 } 828 } 829 } 830 831 final Drawable res = loadDrawable(value, id, theme); 832 synchronized (mAccessLock) { 833 if (mTmpValue == null) { 834 mTmpValue = value; 835 } 836 } 837 return res; 838 } 839 840 /** 841 * Return a movie object associated with the particular resource ID. 842 * @param id The desired resource identifier, as generated by the aapt 843 * tool. This integer encodes the package, type, and resource 844 * entry. The value 0 is an invalid identifier. 845 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 846 * 847 */ 848 public Movie getMovie(int id) throws NotFoundException { 849 InputStream is = openRawResource(id); 850 Movie movie = Movie.decodeStream(is); 851 try { 852 is.close(); 853 } 854 catch (java.io.IOException e) { 855 // don't care, since the return value is valid 856 } 857 return movie; 858 } 859 860 /** 861 * Return a color integer associated with a particular resource ID. 862 * If the resource holds a complex 863 * {@link android.content.res.ColorStateList}, then the default color from 864 * the set is returned. 865 * 866 * @param id The desired resource identifier, as generated by the aapt 867 * tool. This integer encodes the package, type, and resource 868 * entry. The value 0 is an invalid identifier. 869 * 870 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 871 * 872 * @return Returns a single color value in the form 0xAARRGGBB. 873 */ 874 public int getColor(int id) throws NotFoundException { 875 TypedValue value; 876 synchronized (mAccessLock) { 877 value = mTmpValue; 878 if (value == null) { 879 value = new TypedValue(); 880 } 881 getValue(id, value, true); 882 if (value.type >= TypedValue.TYPE_FIRST_INT 883 && value.type <= TypedValue.TYPE_LAST_INT) { 884 mTmpValue = value; 885 return value.data; 886 } else if (value.type != TypedValue.TYPE_STRING) { 887 throw new NotFoundException( 888 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 889 + Integer.toHexString(value.type) + " is not valid"); 890 } 891 mTmpValue = null; 892 } 893 ColorStateList csl = loadColorStateList(value, id); 894 synchronized (mAccessLock) { 895 if (mTmpValue == null) { 896 mTmpValue = value; 897 } 898 } 899 return csl.getDefaultColor(); 900 } 901 902 /** 903 * Return a color state list associated with a particular resource ID. The 904 * resource may contain either a single raw color value, or a complex 905 * {@link android.content.res.ColorStateList} holding multiple possible colors. 906 * 907 * @param id The desired resource identifier of a {@link ColorStateList}, 908 * as generated by the aapt tool. This integer encodes the package, type, and resource 909 * entry. The value 0 is an invalid identifier. 910 * 911 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 912 * 913 * @return Returns a ColorStateList object containing either a single 914 * solid color or multiple colors that can be selected based on a state. 915 */ 916 public ColorStateList getColorStateList(int id) throws NotFoundException { 917 TypedValue value; 918 synchronized (mAccessLock) { 919 value = mTmpValue; 920 if (value == null) { 921 value = new TypedValue(); 922 } else { 923 mTmpValue = null; 924 } 925 getValue(id, value, true); 926 } 927 ColorStateList res = loadColorStateList(value, id); 928 synchronized (mAccessLock) { 929 if (mTmpValue == null) { 930 mTmpValue = value; 931 } 932 } 933 return res; 934 } 935 936 /** 937 * Return a boolean associated with a particular resource ID. This can be 938 * used with any integral resource value, and will return true if it is 939 * non-zero. 940 * 941 * @param id The desired resource identifier, as generated by the aapt 942 * tool. This integer encodes the package, type, and resource 943 * entry. The value 0 is an invalid identifier. 944 * 945 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 946 * 947 * @return Returns the boolean value contained in the resource. 948 */ 949 public boolean getBoolean(int id) throws NotFoundException { 950 synchronized (mAccessLock) { 951 TypedValue value = mTmpValue; 952 if (value == null) { 953 mTmpValue = value = new TypedValue(); 954 } 955 getValue(id, value, true); 956 if (value.type >= TypedValue.TYPE_FIRST_INT 957 && value.type <= TypedValue.TYPE_LAST_INT) { 958 return value.data != 0; 959 } 960 throw new NotFoundException( 961 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 962 + Integer.toHexString(value.type) + " is not valid"); 963 } 964 } 965 966 /** 967 * Return an integer associated with a particular resource ID. 968 * 969 * @param id The desired resource identifier, as generated by the aapt 970 * tool. This integer encodes the package, type, and resource 971 * entry. The value 0 is an invalid identifier. 972 * 973 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 974 * 975 * @return Returns the integer value contained in the resource. 976 */ 977 public int getInteger(int id) throws NotFoundException { 978 synchronized (mAccessLock) { 979 TypedValue value = mTmpValue; 980 if (value == null) { 981 mTmpValue = value = new TypedValue(); 982 } 983 getValue(id, value, true); 984 if (value.type >= TypedValue.TYPE_FIRST_INT 985 && value.type <= TypedValue.TYPE_LAST_INT) { 986 return value.data; 987 } 988 throw new NotFoundException( 989 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 990 + Integer.toHexString(value.type) + " is not valid"); 991 } 992 } 993 994 /** 995 * Retrieve a floating-point value for a particular resource ID. 996 * 997 * @param id The desired resource identifier, as generated by the aapt 998 * tool. This integer encodes the package, type, and resource 999 * entry. The value 0 is an invalid identifier. 1000 * 1001 * @return Returns the floating-point value contained in the resource. 1002 * 1003 * @throws NotFoundException Throws NotFoundException if the given ID does 1004 * not exist or is not a floating-point value. 1005 * @hide Pending API council approval. 1006 */ 1007 public float getFloat(int id) { 1008 synchronized (mAccessLock) { 1009 TypedValue value = mTmpValue; 1010 if (value == null) { 1011 mTmpValue = value = new TypedValue(); 1012 } 1013 getValue(id, value, true); 1014 if (value.type == TypedValue.TYPE_FLOAT) { 1015 return value.getFloat(); 1016 } 1017 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) + " type #0x" 1018 + Integer.toHexString(value.type) + " is not valid"); 1019 } 1020 } 1021 1022 /** 1023 * Return an XmlResourceParser through which you can read a view layout 1024 * description for the given resource ID. This parser has limited 1025 * functionality -- in particular, you can't change its input, and only 1026 * the high-level events are available. 1027 * 1028 * <p>This function is really a simple wrapper for calling 1029 * {@link #getXml} with a layout resource. 1030 * 1031 * @param id The desired resource identifier, as generated by the aapt 1032 * tool. This integer encodes the package, type, and resource 1033 * entry. The value 0 is an invalid identifier. 1034 * 1035 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1036 * 1037 * @return A new parser object through which you can read 1038 * the XML data. 1039 * 1040 * @see #getXml 1041 */ 1042 public XmlResourceParser getLayout(int id) throws NotFoundException { 1043 return loadXmlResourceParser(id, "layout"); 1044 } 1045 1046 /** 1047 * Return an XmlResourceParser through which you can read an animation 1048 * description for the given resource ID. This parser has limited 1049 * functionality -- in particular, you can't change its input, and only 1050 * the high-level events are available. 1051 * 1052 * <p>This function is really a simple wrapper for calling 1053 * {@link #getXml} with an animation resource. 1054 * 1055 * @param id The desired resource identifier, as generated by the aapt 1056 * tool. This integer encodes the package, type, and resource 1057 * entry. The value 0 is an invalid identifier. 1058 * 1059 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1060 * 1061 * @return A new parser object through which you can read 1062 * the XML data. 1063 * 1064 * @see #getXml 1065 */ 1066 public XmlResourceParser getAnimation(int id) throws NotFoundException { 1067 return loadXmlResourceParser(id, "anim"); 1068 } 1069 1070 /** 1071 * Return an XmlResourceParser through which you can read a generic XML 1072 * resource for the given resource ID. 1073 * 1074 * <p>The XmlPullParser implementation returned here has some limited 1075 * functionality. In particular, you can't change its input, and only 1076 * high-level parsing events are available (since the document was 1077 * pre-parsed for you at build time, which involved merging text and 1078 * stripping comments). 1079 * 1080 * @param id The desired resource identifier, as generated by the aapt 1081 * tool. This integer encodes the package, type, and resource 1082 * entry. The value 0 is an invalid identifier. 1083 * 1084 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1085 * 1086 * @return A new parser object through which you can read 1087 * the XML data. 1088 * 1089 * @see android.util.AttributeSet 1090 */ 1091 public XmlResourceParser getXml(int id) throws NotFoundException { 1092 return loadXmlResourceParser(id, "xml"); 1093 } 1094 1095 /** 1096 * Open a data stream for reading a raw resource. This can only be used 1097 * with resources whose value is the name of an asset files -- that is, it can be 1098 * used to open drawable, sound, and raw resources; it will fail on string 1099 * and color resources. 1100 * 1101 * @param id The resource identifier to open, as generated by the appt 1102 * tool. 1103 * 1104 * @return InputStream Access to the resource data. 1105 * 1106 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1107 * 1108 */ 1109 public InputStream openRawResource(int id) throws NotFoundException { 1110 TypedValue value; 1111 synchronized (mAccessLock) { 1112 value = mTmpValue; 1113 if (value == null) { 1114 value = new TypedValue(); 1115 } else { 1116 mTmpValue = null; 1117 } 1118 } 1119 InputStream res = openRawResource(id, value); 1120 synchronized (mAccessLock) { 1121 if (mTmpValue == null) { 1122 mTmpValue = value; 1123 } 1124 } 1125 return res; 1126 } 1127 1128 /** 1129 * Open a data stream for reading a raw resource. This can only be used 1130 * with resources whose value is the name of an asset file -- that is, it can be 1131 * used to open drawable, sound, and raw resources; it will fail on string 1132 * and color resources. 1133 * 1134 * @param id The resource identifier to open, as generated by the appt tool. 1135 * @param value The TypedValue object to hold the resource information. 1136 * 1137 * @return InputStream Access to the resource data. 1138 * 1139 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1140 */ 1141 public InputStream openRawResource(int id, TypedValue value) throws NotFoundException { 1142 getValue(id, value, true); 1143 1144 try { 1145 return mAssets.openNonAsset(value.assetCookie, value.string.toString(), 1146 AssetManager.ACCESS_STREAMING); 1147 } catch (Exception e) { 1148 NotFoundException rnf = new NotFoundException("File " + value.string.toString() + 1149 " from drawable resource ID #0x" + Integer.toHexString(id)); 1150 rnf.initCause(e); 1151 throw rnf; 1152 } 1153 } 1154 1155 /** 1156 * Open a file descriptor for reading a raw resource. This can only be used 1157 * with resources whose value is the name of an asset files -- that is, it can be 1158 * used to open drawable, sound, and raw resources; it will fail on string 1159 * and color resources. 1160 * 1161 * <p>This function only works for resources that are stored in the package 1162 * as uncompressed data, which typically includes things like mp3 files 1163 * and png images. 1164 * 1165 * @param id The resource identifier to open, as generated by the appt 1166 * tool. 1167 * 1168 * @return AssetFileDescriptor A new file descriptor you can use to read 1169 * the resource. This includes the file descriptor itself, as well as the 1170 * offset and length of data where the resource appears in the file. A 1171 * null is returned if the file exists but is compressed. 1172 * 1173 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1174 * 1175 */ 1176 public AssetFileDescriptor openRawResourceFd(int id) throws NotFoundException { 1177 TypedValue value; 1178 synchronized (mAccessLock) { 1179 value = mTmpValue; 1180 if (value == null) { 1181 value = new TypedValue(); 1182 } else { 1183 mTmpValue = null; 1184 } 1185 getValue(id, value, true); 1186 } 1187 try { 1188 return mAssets.openNonAssetFd( 1189 value.assetCookie, value.string.toString()); 1190 } catch (Exception e) { 1191 NotFoundException rnf = new NotFoundException( 1192 "File " + value.string.toString() 1193 + " from drawable resource ID #0x" 1194 + Integer.toHexString(id)); 1195 rnf.initCause(e); 1196 throw rnf; 1197 } finally { 1198 synchronized (mAccessLock) { 1199 if (mTmpValue == null) { 1200 mTmpValue = value; 1201 } 1202 } 1203 } 1204 } 1205 1206 /** 1207 * Return the raw data associated with a particular resource ID. 1208 * 1209 * @param id The desired resource identifier, as generated by the aapt 1210 * tool. This integer encodes the package, type, and resource 1211 * entry. The value 0 is an invalid identifier. 1212 * @param outValue Object in which to place the resource data. 1213 * @param resolveRefs If true, a resource that is a reference to another 1214 * resource will be followed so that you receive the 1215 * actual final resource data. If false, the TypedValue 1216 * will be filled in with the reference itself. 1217 * 1218 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1219 * 1220 */ 1221 public void getValue(int id, TypedValue outValue, boolean resolveRefs) 1222 throws NotFoundException { 1223 boolean found = mAssets.getResourceValue(id, 0, outValue, resolveRefs); 1224 if (found) { 1225 return; 1226 } 1227 throw new NotFoundException("Resource ID #0x" 1228 + Integer.toHexString(id)); 1229 } 1230 1231 /** 1232 * Get the raw value associated with a resource with associated density. 1233 * 1234 * @param id resource identifier 1235 * @param density density in DPI 1236 * @param resolveRefs If true, a resource that is a reference to another 1237 * resource will be followed so that you receive the actual final 1238 * resource data. If false, the TypedValue will be filled in with 1239 * the reference itself. 1240 * @throws NotFoundException Throws NotFoundException if the given ID does 1241 * not exist. 1242 * @see #getValue(String, TypedValue, boolean) 1243 */ 1244 public void getValueForDensity(int id, int density, TypedValue outValue, boolean resolveRefs) 1245 throws NotFoundException { 1246 boolean found = mAssets.getResourceValue(id, density, outValue, resolveRefs); 1247 if (found) { 1248 return; 1249 } 1250 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id)); 1251 } 1252 1253 /** 1254 * Return the raw data associated with a particular resource ID. 1255 * See getIdentifier() for information on how names are mapped to resource 1256 * IDs, and getString(int) for information on how string resources are 1257 * retrieved. 1258 * 1259 * <p>Note: use of this function is discouraged. It is much more 1260 * efficient to retrieve resources by identifier than by name. 1261 * 1262 * @param name The name of the desired resource. This is passed to 1263 * getIdentifier() with a default type of "string". 1264 * @param outValue Object in which to place the resource data. 1265 * @param resolveRefs If true, a resource that is a reference to another 1266 * resource will be followed so that you receive the 1267 * actual final resource data. If false, the TypedValue 1268 * will be filled in with the reference itself. 1269 * 1270 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1271 * 1272 */ 1273 public void getValue(String name, TypedValue outValue, boolean resolveRefs) 1274 throws NotFoundException { 1275 int id = getIdentifier(name, "string", null); 1276 if (id != 0) { 1277 getValue(id, outValue, resolveRefs); 1278 return; 1279 } 1280 throw new NotFoundException("String resource name " + name); 1281 } 1282 1283 /** 1284 * This class holds the current attribute values for a particular theme. 1285 * In other words, a Theme is a set of values for resource attributes; 1286 * these are used in conjunction with {@link TypedArray} 1287 * to resolve the final value for an attribute. 1288 * 1289 * <p>The Theme's attributes come into play in two ways: (1) a styled 1290 * attribute can explicit reference a value in the theme through the 1291 * "?themeAttribute" syntax; (2) if no value has been defined for a 1292 * particular styled attribute, as a last resort we will try to find that 1293 * attribute's value in the Theme. 1294 * 1295 * <p>You will normally use the {@link #obtainStyledAttributes} APIs to 1296 * retrieve XML attributes with style and theme information applied. 1297 */ 1298 public final class Theme { 1299 /** 1300 * Place new attribute values into the theme. The style resource 1301 * specified by <var>resid</var> will be retrieved from this Theme's 1302 * resources, its values placed into the Theme object. 1303 * 1304 * <p>The semantics of this function depends on the <var>force</var> 1305 * argument: If false, only values that are not already defined in 1306 * the theme will be copied from the system resource; otherwise, if 1307 * any of the style's attributes are already defined in the theme, the 1308 * current values in the theme will be overwritten. 1309 * 1310 * @param resId The resource ID of a style resource from which to 1311 * obtain attribute values. 1312 * @param force If true, values in the style resource will always be 1313 * used in the theme; otherwise, they will only be used 1314 * if not already defined in the theme. 1315 */ 1316 public void applyStyle(int resId, boolean force) { 1317 AssetManager.applyThemeStyle(mTheme, resId, force); 1318 1319 mThemeResId = resId; 1320 mKey += Integer.toHexString(resId) + (force ? "! " : " "); 1321 } 1322 1323 /** 1324 * Set this theme to hold the same contents as the theme 1325 * <var>other</var>. If both of these themes are from the same 1326 * Resources object, they will be identical after this function 1327 * returns. If they are from different Resources, only the resources 1328 * they have in common will be set in this theme. 1329 * 1330 * @param other The existing Theme to copy from. 1331 */ 1332 public void setTo(Theme other) { 1333 AssetManager.copyTheme(mTheme, other.mTheme); 1334 1335 mThemeResId = other.mThemeResId; 1336 mKey = other.mKey; 1337 } 1338 1339 /** 1340 * Return a TypedArray holding the values defined by 1341 * <var>Theme</var> which are listed in <var>attrs</var>. 1342 * 1343 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1344 * with the array. 1345 * 1346 * @param attrs The desired attributes. 1347 * 1348 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1349 * 1350 * @return Returns a TypedArray holding an array of the attribute values. 1351 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1352 * when done with it. 1353 * 1354 * @see Resources#obtainAttributes 1355 * @see #obtainStyledAttributes(int, int[]) 1356 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1357 */ 1358 public TypedArray obtainStyledAttributes(int[] attrs) { 1359 final int len = attrs.length; 1360 final TypedArray array = TypedArray.obtain(Resources.this, len); 1361 array.mTheme = this; 1362 AssetManager.applyStyle(mTheme, 0, 0, 0, attrs, array.mData, array.mIndices); 1363 return array; 1364 } 1365 1366 /** 1367 * Return a TypedArray holding the values defined by the style 1368 * resource <var>resid</var> which are listed in <var>attrs</var>. 1369 * 1370 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1371 * with the array. 1372 * 1373 * @param resid The desired style resource. 1374 * @param attrs The desired attributes in the style. 1375 * 1376 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1377 * 1378 * @return Returns a TypedArray holding an array of the attribute values. 1379 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1380 * when done with it. 1381 * 1382 * @see Resources#obtainAttributes 1383 * @see #obtainStyledAttributes(int[]) 1384 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1385 */ 1386 public TypedArray obtainStyledAttributes(int resid, int[] attrs) throws NotFoundException { 1387 final int len = attrs.length; 1388 final TypedArray array = TypedArray.obtain(Resources.this, len); 1389 array.mTheme = this; 1390 if (false) { 1391 int[] data = array.mData; 1392 1393 System.out.println("**********************************************************"); 1394 System.out.println("**********************************************************"); 1395 System.out.println("**********************************************************"); 1396 System.out.println("Attributes:"); 1397 String s = " Attrs:"; 1398 int i; 1399 for (i=0; i<attrs.length; i++) { 1400 s = s + " 0x" + Integer.toHexString(attrs[i]); 1401 } 1402 System.out.println(s); 1403 s = " Found:"; 1404 TypedValue value = new TypedValue(); 1405 for (i=0; i<attrs.length; i++) { 1406 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1407 value.type = data[d+AssetManager.STYLE_TYPE]; 1408 value.data = data[d+AssetManager.STYLE_DATA]; 1409 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1410 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1411 s = s + " 0x" + Integer.toHexString(attrs[i]) 1412 + "=" + value; 1413 } 1414 System.out.println(s); 1415 } 1416 AssetManager.applyStyle(mTheme, 0, resid, 0, attrs, array.mData, array.mIndices); 1417 return array; 1418 } 1419 1420 /** 1421 * Return a TypedArray holding the attribute values in 1422 * <var>set</var> 1423 * that are listed in <var>attrs</var>. In addition, if the given 1424 * AttributeSet specifies a style class (through the "style" attribute), 1425 * that style will be applied on top of the base attributes it defines. 1426 * 1427 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1428 * with the array. 1429 * 1430 * <p>When determining the final value of a particular attribute, there 1431 * are four inputs that come into play:</p> 1432 * 1433 * <ol> 1434 * <li> Any attribute values in the given AttributeSet. 1435 * <li> The style resource specified in the AttributeSet (named 1436 * "style"). 1437 * <li> The default style specified by <var>defStyleAttr</var> and 1438 * <var>defStyleRes</var> 1439 * <li> The base values in this theme. 1440 * </ol> 1441 * 1442 * <p>Each of these inputs is considered in-order, with the first listed 1443 * taking precedence over the following ones. In other words, if in the 1444 * AttributeSet you have supplied <code><Button 1445 * textColor="#ff000000"></code>, then the button's text will 1446 * <em>always</em> be black, regardless of what is specified in any of 1447 * the styles. 1448 * 1449 * @param set The base set of attribute values. May be null. 1450 * @param attrs The desired attributes to be retrieved. 1451 * @param defStyleAttr An attribute in the current theme that contains a 1452 * reference to a style resource that supplies 1453 * defaults values for the TypedArray. Can be 1454 * 0 to not look for defaults. 1455 * @param defStyleRes A resource identifier of a style resource that 1456 * supplies default values for the TypedArray, 1457 * used only if defStyleAttr is 0 or can not be found 1458 * in the theme. Can be 0 to not look for defaults. 1459 * 1460 * @return Returns a TypedArray holding an array of the attribute values. 1461 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1462 * when done with it. 1463 * 1464 * @see Resources#obtainAttributes 1465 * @see #obtainStyledAttributes(int[]) 1466 * @see #obtainStyledAttributes(int, int[]) 1467 */ 1468 public TypedArray obtainStyledAttributes(AttributeSet set, 1469 int[] attrs, int defStyleAttr, int defStyleRes) { 1470 final int len = attrs.length; 1471 final TypedArray array = TypedArray.obtain(Resources.this, len); 1472 1473 // XXX note that for now we only work with compiled XML files. 1474 // To support generic XML files we will need to manually parse 1475 // out the attributes from the XML file (applying type information 1476 // contained in the resources and such). 1477 final XmlBlock.Parser parser = (XmlBlock.Parser)set; 1478 AssetManager.applyStyle(mTheme, defStyleAttr, defStyleRes, 1479 parser != null ? parser.mParseState : 0, attrs, array.mData, array.mIndices); 1480 1481 array.mTheme = this; 1482 array.mXml = parser; 1483 1484 if (false) { 1485 int[] data = array.mData; 1486 1487 System.out.println("Attributes:"); 1488 String s = " Attrs:"; 1489 int i; 1490 for (i=0; i<set.getAttributeCount(); i++) { 1491 s = s + " " + set.getAttributeName(i); 1492 int id = set.getAttributeNameResource(i); 1493 if (id != 0) { 1494 s = s + "(0x" + Integer.toHexString(id) + ")"; 1495 } 1496 s = s + "=" + set.getAttributeValue(i); 1497 } 1498 System.out.println(s); 1499 s = " Found:"; 1500 TypedValue value = new TypedValue(); 1501 for (i=0; i<attrs.length; i++) { 1502 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1503 value.type = data[d+AssetManager.STYLE_TYPE]; 1504 value.data = data[d+AssetManager.STYLE_DATA]; 1505 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1506 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1507 s = s + " 0x" + Integer.toHexString(attrs[i]) 1508 + "=" + value; 1509 } 1510 System.out.println(s); 1511 } 1512 1513 return array; 1514 } 1515 1516 /** 1517 * Retrieve the values for a set of attributes in the Theme. The 1518 * contents of the typed array are ultimately filled in by 1519 * {@link Resources#getValue}. 1520 * 1521 * @param values The base set of attribute values, must be equal 1522 * in length to {@code attrs} or {@code null}. All values 1523 * must be of type {@link TypedValue#TYPE_ATTRIBUTE}. 1524 * @param attrs The desired attributes to be retrieved. 1525 * @return Returns a TypedArray holding an array of the attribute 1526 * values. Be sure to call {@link TypedArray#recycle()} 1527 * when done with it. 1528 * @hide 1529 */ 1530 public TypedArray resolveAttributes(int[] values, int[] attrs) { 1531 final int len = attrs.length; 1532 if (values != null && len != values.length) { 1533 throw new IllegalArgumentException( 1534 "Base attribute values must be null or the same length as attrs"); 1535 } 1536 1537 final TypedArray array = TypedArray.obtain(Resources.this, len); 1538 AssetManager.resolveAttrs(mTheme, 0, 0, values, attrs, array.mData, array.mIndices); 1539 array.mTheme = this; 1540 array.mXml = null; 1541 1542 return array; 1543 } 1544 1545 /** 1546 * Retrieve the value of an attribute in the Theme. The contents of 1547 * <var>outValue</var> are ultimately filled in by 1548 * {@link Resources#getValue}. 1549 * 1550 * @param resid The resource identifier of the desired theme 1551 * attribute. 1552 * @param outValue Filled in with the ultimate resource value supplied 1553 * by the attribute. 1554 * @param resolveRefs If true, resource references will be walked; if 1555 * false, <var>outValue</var> may be a 1556 * TYPE_REFERENCE. In either case, it will never 1557 * be a TYPE_ATTRIBUTE. 1558 * 1559 * @return boolean Returns true if the attribute was found and 1560 * <var>outValue</var> is valid, else false. 1561 */ 1562 public boolean resolveAttribute(int resid, TypedValue outValue, boolean resolveRefs) { 1563 boolean got = mAssets.getThemeValue(mTheme, resid, outValue, resolveRefs); 1564 if (false) { 1565 System.out.println( 1566 "resolveAttribute #" + Integer.toHexString(resid) 1567 + " got=" + got + ", type=0x" + Integer.toHexString(outValue.type) 1568 + ", data=0x" + Integer.toHexString(outValue.data)); 1569 } 1570 return got; 1571 } 1572 1573 /** 1574 * Returns the resources to which this theme belongs. 1575 * 1576 * @return Resources to which this theme belongs. 1577 */ 1578 public Resources getResources() { 1579 return Resources.this; 1580 } 1581 1582 /** 1583 * Return a drawable object associated with a particular resource ID 1584 * and styled for the Theme. 1585 * 1586 * @param id The desired resource identifier, as generated by the aapt 1587 * tool. This integer encodes the package, type, and resource 1588 * entry. The value 0 is an invalid identifier. 1589 * @return Drawable An object that can be used to draw this resource. 1590 * @throws NotFoundException Throws NotFoundException if the given ID 1591 * does not exist. 1592 */ 1593 public Drawable getDrawable(int id) throws NotFoundException { 1594 return Resources.this.getDrawable(id, this); 1595 } 1596 1597 /** 1598 * Print contents of this theme out to the log. For debugging only. 1599 * 1600 * @param priority The log priority to use. 1601 * @param tag The log tag to use. 1602 * @param prefix Text to prefix each line printed. 1603 */ 1604 public void dump(int priority, String tag, String prefix) { 1605 AssetManager.dumpTheme(mTheme, priority, tag, prefix); 1606 } 1607 1608 @Override 1609 protected void finalize() throws Throwable { 1610 super.finalize(); 1611 mAssets.releaseTheme(mTheme); 1612 } 1613 1614 /*package*/ Theme() { 1615 mAssets = Resources.this.mAssets; 1616 mTheme = mAssets.createTheme(); 1617 } 1618 1619 @SuppressWarnings("hiding") 1620 private final AssetManager mAssets; 1621 private final long mTheme; 1622 1623 /** Resource identifier for the theme. */ 1624 private int mThemeResId = 0; 1625 1626 /** Unique key for the series of styles applied to this theme. */ 1627 private String mKey = ""; 1628 1629 // Needed by layoutlib. 1630 /*package*/ long getNativeTheme() { 1631 return mTheme; 1632 } 1633 1634 /*package*/ int getAppliedStyleResId() { 1635 return mThemeResId; 1636 } 1637 1638 /*package*/ String getKey() { 1639 return mKey; 1640 } 1641 } 1642 1643 /** 1644 * Generate a new Theme object for this set of Resources. It initially 1645 * starts out empty. 1646 * 1647 * @return Theme The newly created Theme container. 1648 */ 1649 public final Theme newTheme() { 1650 return new Theme(); 1651 } 1652 1653 /** 1654 * Retrieve a set of basic attribute values from an AttributeSet, not 1655 * performing styling of them using a theme and/or style resources. 1656 * 1657 * @param set The current attribute values to retrieve. 1658 * @param attrs The specific attributes to be retrieved. 1659 * @return Returns a TypedArray holding an array of the attribute values. 1660 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1661 * when done with it. 1662 * 1663 * @see Theme#obtainStyledAttributes(AttributeSet, int[], int, int) 1664 */ 1665 public TypedArray obtainAttributes(AttributeSet set, int[] attrs) { 1666 int len = attrs.length; 1667 TypedArray array = TypedArray.obtain(this, len); 1668 1669 // XXX note that for now we only work with compiled XML files. 1670 // To support generic XML files we will need to manually parse 1671 // out the attributes from the XML file (applying type information 1672 // contained in the resources and such). 1673 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1674 mAssets.retrieveAttributes(parser.mParseState, attrs, 1675 array.mData, array.mIndices); 1676 1677 array.mXml = parser; 1678 1679 return array; 1680 } 1681 1682 /** 1683 * Store the newly updated configuration. 1684 */ 1685 public void updateConfiguration(Configuration config, 1686 DisplayMetrics metrics) { 1687 updateConfiguration(config, metrics, null); 1688 } 1689 1690 /** 1691 * @hide 1692 */ 1693 public void updateConfiguration(Configuration config, 1694 DisplayMetrics metrics, CompatibilityInfo compat) { 1695 synchronized (mAccessLock) { 1696 if (false) { 1697 Slog.i(TAG, "**** Updating config of " + this + ": old config is " 1698 + mConfiguration + " old compat is " + mCompatibilityInfo); 1699 Slog.i(TAG, "**** Updating config of " + this + ": new config is " 1700 + config + " new compat is " + compat); 1701 } 1702 if (compat != null) { 1703 mCompatibilityInfo = compat; 1704 } 1705 if (metrics != null) { 1706 mMetrics.setTo(metrics); 1707 } 1708 // NOTE: We should re-arrange this code to create a Display 1709 // with the CompatibilityInfo that is used everywhere we deal 1710 // with the display in relation to this app, rather than 1711 // doing the conversion here. This impl should be okay because 1712 // we make sure to return a compatible display in the places 1713 // where there are public APIs to retrieve the display... but 1714 // it would be cleaner and more maintainble to just be 1715 // consistently dealing with a compatible display everywhere in 1716 // the framework. 1717 mCompatibilityInfo.applyToDisplayMetrics(mMetrics); 1718 1719 int configChanges = 0xfffffff; 1720 if (config != null) { 1721 mTmpConfig.setTo(config); 1722 int density = config.densityDpi; 1723 if (density == Configuration.DENSITY_DPI_UNDEFINED) { 1724 density = mMetrics.noncompatDensityDpi; 1725 } 1726 1727 mCompatibilityInfo.applyToConfiguration(density, mTmpConfig); 1728 1729 if (mTmpConfig.locale == null) { 1730 mTmpConfig.locale = Locale.getDefault(); 1731 mTmpConfig.setLayoutDirection(mTmpConfig.locale); 1732 } 1733 configChanges = mConfiguration.updateFrom(mTmpConfig); 1734 configChanges = ActivityInfo.activityInfoConfigToNative(configChanges); 1735 } 1736 if (mConfiguration.locale == null) { 1737 mConfiguration.locale = Locale.getDefault(); 1738 mConfiguration.setLayoutDirection(mConfiguration.locale); 1739 } 1740 if (mConfiguration.densityDpi != Configuration.DENSITY_DPI_UNDEFINED) { 1741 mMetrics.densityDpi = mConfiguration.densityDpi; 1742 mMetrics.density = mConfiguration.densityDpi * DisplayMetrics.DENSITY_DEFAULT_SCALE; 1743 } 1744 mMetrics.scaledDensity = mMetrics.density * mConfiguration.fontScale; 1745 1746 String locale = null; 1747 if (mConfiguration.locale != null) { 1748 locale = adjustLanguageTag(mConfiguration.locale.toLanguageTag()); 1749 } 1750 int width, height; 1751 if (mMetrics.widthPixels >= mMetrics.heightPixels) { 1752 width = mMetrics.widthPixels; 1753 height = mMetrics.heightPixels; 1754 } else { 1755 //noinspection SuspiciousNameCombination 1756 width = mMetrics.heightPixels; 1757 //noinspection SuspiciousNameCombination 1758 height = mMetrics.widthPixels; 1759 } 1760 int keyboardHidden = mConfiguration.keyboardHidden; 1761 if (keyboardHidden == Configuration.KEYBOARDHIDDEN_NO 1762 && mConfiguration.hardKeyboardHidden 1763 == Configuration.HARDKEYBOARDHIDDEN_YES) { 1764 keyboardHidden = Configuration.KEYBOARDHIDDEN_SOFT; 1765 } 1766 mAssets.setConfiguration(mConfiguration.mcc, mConfiguration.mnc, 1767 locale, mConfiguration.orientation, 1768 mConfiguration.touchscreen, 1769 mConfiguration.densityDpi, mConfiguration.keyboard, 1770 keyboardHidden, mConfiguration.navigation, width, height, 1771 mConfiguration.smallestScreenWidthDp, 1772 mConfiguration.screenWidthDp, mConfiguration.screenHeightDp, 1773 mConfiguration.screenLayout, mConfiguration.uiMode, 1774 Build.VERSION.RESOURCES_SDK_INT); 1775 1776 if (DEBUG_CONFIG) { 1777 Slog.i(TAG, "**** Updating config of " + this + ": final config is " + mConfiguration 1778 + " final compat is " + mCompatibilityInfo); 1779 } 1780 1781 clearDrawableCachesLocked(mDrawableCache, configChanges); 1782 clearDrawableCachesLocked(mColorDrawableCache, configChanges); 1783 1784 mColorStateListCache.clear(); 1785 1786 flushLayoutCache(); 1787 } 1788 synchronized (sSync) { 1789 if (mPluralRule != null) { 1790 mPluralRule = NativePluralRules.forLocale(config.locale); 1791 } 1792 } 1793 } 1794 1795 private void clearDrawableCachesLocked( 1796 ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches, 1797 int configChanges) { 1798 final int N = caches.size(); 1799 for (int i = 0; i < N; i++) { 1800 clearDrawableCacheLocked(caches.valueAt(i), configChanges); 1801 } 1802 } 1803 1804 private void clearDrawableCacheLocked( 1805 LongSparseArray<WeakReference<ConstantState>> cache, int configChanges) { 1806 if (DEBUG_CONFIG) { 1807 Log.d(TAG, "Cleaning up drawables config changes: 0x" 1808 + Integer.toHexString(configChanges)); 1809 } 1810 final int N = cache.size(); 1811 for (int i = 0; i < N; i++) { 1812 final WeakReference<ConstantState> ref = cache.valueAt(i); 1813 if (ref != null) { 1814 final ConstantState cs = ref.get(); 1815 if (cs != null) { 1816 if (Configuration.needNewResources( 1817 configChanges, cs.getChangingConfigurations())) { 1818 if (DEBUG_CONFIG) { 1819 Log.d(TAG, "FLUSHING #0x" 1820 + Long.toHexString(cache.keyAt(i)) 1821 + " / " + cs + " with changes: 0x" 1822 + Integer.toHexString(cs.getChangingConfigurations())); 1823 } 1824 cache.setValueAt(i, null); 1825 } else if (DEBUG_CONFIG) { 1826 Log.d(TAG, "(Keeping #0x" 1827 + Long.toHexString(cache.keyAt(i)) 1828 + " / " + cs + " with changes: 0x" 1829 + Integer.toHexString(cs.getChangingConfigurations()) 1830 + ")"); 1831 } 1832 } 1833 } 1834 } 1835 } 1836 1837 /** 1838 * {@code Locale.toLanguageTag} will transform the obsolete (and deprecated) 1839 * language codes "in", "ji" and "iw" to "id", "yi" and "he" respectively. 1840 * 1841 * All released versions of android prior to "L" used the deprecated language 1842 * tags, so we will need to support them for backwards compatibility. 1843 * 1844 * Note that this conversion needs to take place *after* the call to 1845 * {@code toLanguageTag} because that will convert all the deprecated codes to 1846 * the new ones, even if they're set manually. 1847 */ 1848 private static String adjustLanguageTag(String languageTag) { 1849 final int separator = languageTag.indexOf('-'); 1850 final String language; 1851 final String remainder; 1852 1853 if (separator == -1) { 1854 language = languageTag; 1855 remainder = ""; 1856 } else { 1857 language = languageTag.substring(0, separator); 1858 remainder = languageTag.substring(separator); 1859 } 1860 1861 return Locale.adjustLanguageCode(language) + remainder; 1862 } 1863 1864 /** 1865 * Update the system resources configuration if they have previously 1866 * been initialized. 1867 * 1868 * @hide 1869 */ 1870 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics, 1871 CompatibilityInfo compat) { 1872 if (mSystem != null) { 1873 mSystem.updateConfiguration(config, metrics, compat); 1874 //Log.i(TAG, "Updated system resources " + mSystem 1875 // + ": " + mSystem.getConfiguration()); 1876 } 1877 } 1878 1879 /** 1880 * Return the current display metrics that are in effect for this resource 1881 * object. The returned object should be treated as read-only. 1882 * 1883 * @return The resource's current display metrics. 1884 */ 1885 public DisplayMetrics getDisplayMetrics() { 1886 if (DEBUG_CONFIG) Slog.v(TAG, "Returning DisplayMetrics: " + mMetrics.widthPixels 1887 + "x" + mMetrics.heightPixels + " " + mMetrics.density); 1888 return mMetrics; 1889 } 1890 1891 /** 1892 * Return the current configuration that is in effect for this resource 1893 * object. The returned object should be treated as read-only. 1894 * 1895 * @return The resource's current configuration. 1896 */ 1897 public Configuration getConfiguration() { 1898 return mConfiguration; 1899 } 1900 1901 /** 1902 * Return the compatibility mode information for the application. 1903 * The returned object should be treated as read-only. 1904 * 1905 * @return compatibility info. 1906 * @hide 1907 */ 1908 public CompatibilityInfo getCompatibilityInfo() { 1909 return mCompatibilityInfo; 1910 } 1911 1912 /** 1913 * This is just for testing. 1914 * @hide 1915 */ 1916 public void setCompatibilityInfo(CompatibilityInfo ci) { 1917 if (ci != null) { 1918 mCompatibilityInfo = ci; 1919 updateConfiguration(mConfiguration, mMetrics); 1920 } 1921 } 1922 1923 /** 1924 * Return a resource identifier for the given resource name. A fully 1925 * qualified resource name is of the form "package:type/entry". The first 1926 * two components (package and type) are optional if defType and 1927 * defPackage, respectively, are specified here. 1928 * 1929 * <p>Note: use of this function is discouraged. It is much more 1930 * efficient to retrieve resources by identifier than by name. 1931 * 1932 * @param name The name of the desired resource. 1933 * @param defType Optional default resource type to find, if "type/" is 1934 * not included in the name. Can be null to require an 1935 * explicit type. 1936 * @param defPackage Optional default package to find, if "package:" is 1937 * not included in the name. Can be null to require an 1938 * explicit package. 1939 * 1940 * @return int The associated resource identifier. Returns 0 if no such 1941 * resource was found. (0 is not a valid resource ID.) 1942 */ 1943 public int getIdentifier(String name, String defType, String defPackage) { 1944 if (name == null) { 1945 throw new NullPointerException("name is null"); 1946 } 1947 try { 1948 return Integer.parseInt(name); 1949 } catch (Exception e) { 1950 // Ignore 1951 } 1952 return mAssets.getResourceIdentifier(name, defType, defPackage); 1953 } 1954 1955 /** 1956 * Return true if given resource identifier includes a package. 1957 * 1958 * @hide 1959 */ 1960 public static boolean resourceHasPackage(int resid) { 1961 return (resid >>> 24) != 0; 1962 } 1963 1964 /** 1965 * Return the full name for a given resource identifier. This name is 1966 * a single string of the form "package:type/entry". 1967 * 1968 * @param resid The resource identifier whose name is to be retrieved. 1969 * 1970 * @return A string holding the name of the resource. 1971 * 1972 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1973 * 1974 * @see #getResourcePackageName 1975 * @see #getResourceTypeName 1976 * @see #getResourceEntryName 1977 */ 1978 public String getResourceName(int resid) throws NotFoundException { 1979 String str = mAssets.getResourceName(resid); 1980 if (str != null) return str; 1981 throw new NotFoundException("Unable to find resource ID #0x" 1982 + Integer.toHexString(resid)); 1983 } 1984 1985 /** 1986 * Return the package name for a given resource identifier. 1987 * 1988 * @param resid The resource identifier whose package name is to be 1989 * retrieved. 1990 * 1991 * @return A string holding the package name of the resource. 1992 * 1993 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1994 * 1995 * @see #getResourceName 1996 */ 1997 public String getResourcePackageName(int resid) throws NotFoundException { 1998 String str = mAssets.getResourcePackageName(resid); 1999 if (str != null) return str; 2000 throw new NotFoundException("Unable to find resource ID #0x" 2001 + Integer.toHexString(resid)); 2002 } 2003 2004 /** 2005 * Return the type name for a given resource identifier. 2006 * 2007 * @param resid The resource identifier whose type name is to be 2008 * retrieved. 2009 * 2010 * @return A string holding the type name of the resource. 2011 * 2012 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2013 * 2014 * @see #getResourceName 2015 */ 2016 public String getResourceTypeName(int resid) throws NotFoundException { 2017 String str = mAssets.getResourceTypeName(resid); 2018 if (str != null) return str; 2019 throw new NotFoundException("Unable to find resource ID #0x" 2020 + Integer.toHexString(resid)); 2021 } 2022 2023 /** 2024 * Return the entry name for a given resource identifier. 2025 * 2026 * @param resid The resource identifier whose entry name is to be 2027 * retrieved. 2028 * 2029 * @return A string holding the entry name of the resource. 2030 * 2031 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2032 * 2033 * @see #getResourceName 2034 */ 2035 public String getResourceEntryName(int resid) throws NotFoundException { 2036 String str = mAssets.getResourceEntryName(resid); 2037 if (str != null) return str; 2038 throw new NotFoundException("Unable to find resource ID #0x" 2039 + Integer.toHexString(resid)); 2040 } 2041 2042 /** 2043 * Parse a series of {@link android.R.styleable#Extra <extra>} tags from 2044 * an XML file. You call this when you are at the parent tag of the 2045 * extra tags, and it will return once all of the child tags have been parsed. 2046 * This will call {@link #parseBundleExtra} for each extra tag encountered. 2047 * 2048 * @param parser The parser from which to retrieve the extras. 2049 * @param outBundle A Bundle in which to place all parsed extras. 2050 * @throws XmlPullParserException 2051 * @throws IOException 2052 */ 2053 public void parseBundleExtras(XmlResourceParser parser, Bundle outBundle) 2054 throws XmlPullParserException, IOException { 2055 int outerDepth = parser.getDepth(); 2056 int type; 2057 while ((type=parser.next()) != XmlPullParser.END_DOCUMENT 2058 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 2059 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 2060 continue; 2061 } 2062 2063 String nodeName = parser.getName(); 2064 if (nodeName.equals("extra")) { 2065 parseBundleExtra("extra", parser, outBundle); 2066 XmlUtils.skipCurrentTag(parser); 2067 2068 } else { 2069 XmlUtils.skipCurrentTag(parser); 2070 } 2071 } 2072 } 2073 2074 /** 2075 * Parse a name/value pair out of an XML tag holding that data. The 2076 * AttributeSet must be holding the data defined by 2077 * {@link android.R.styleable#Extra}. The following value types are supported: 2078 * <ul> 2079 * <li> {@link TypedValue#TYPE_STRING}: 2080 * {@link Bundle#putCharSequence Bundle.putCharSequence()} 2081 * <li> {@link TypedValue#TYPE_INT_BOOLEAN}: 2082 * {@link Bundle#putCharSequence Bundle.putBoolean()} 2083 * <li> {@link TypedValue#TYPE_FIRST_INT}-{@link TypedValue#TYPE_LAST_INT}: 2084 * {@link Bundle#putCharSequence Bundle.putBoolean()} 2085 * <li> {@link TypedValue#TYPE_FLOAT}: 2086 * {@link Bundle#putCharSequence Bundle.putFloat()} 2087 * </ul> 2088 * 2089 * @param tagName The name of the tag these attributes come from; this is 2090 * only used for reporting error messages. 2091 * @param attrs The attributes from which to retrieve the name/value pair. 2092 * @param outBundle The Bundle in which to place the parsed value. 2093 * @throws XmlPullParserException If the attributes are not valid. 2094 */ 2095 public void parseBundleExtra(String tagName, AttributeSet attrs, 2096 Bundle outBundle) throws XmlPullParserException { 2097 TypedArray sa = obtainAttributes(attrs, 2098 com.android.internal.R.styleable.Extra); 2099 2100 String name = sa.getString( 2101 com.android.internal.R.styleable.Extra_name); 2102 if (name == null) { 2103 sa.recycle(); 2104 throw new XmlPullParserException("<" + tagName 2105 + "> requires an android:name attribute at " 2106 + attrs.getPositionDescription()); 2107 } 2108 2109 TypedValue v = sa.peekValue( 2110 com.android.internal.R.styleable.Extra_value); 2111 if (v != null) { 2112 if (v.type == TypedValue.TYPE_STRING) { 2113 CharSequence cs = v.coerceToString(); 2114 outBundle.putCharSequence(name, cs); 2115 } else if (v.type == TypedValue.TYPE_INT_BOOLEAN) { 2116 outBundle.putBoolean(name, v.data != 0); 2117 } else if (v.type >= TypedValue.TYPE_FIRST_INT 2118 && v.type <= TypedValue.TYPE_LAST_INT) { 2119 outBundle.putInt(name, v.data); 2120 } else if (v.type == TypedValue.TYPE_FLOAT) { 2121 outBundle.putFloat(name, v.getFloat()); 2122 } else { 2123 sa.recycle(); 2124 throw new XmlPullParserException("<" + tagName 2125 + "> only supports string, integer, float, color, and boolean at " 2126 + attrs.getPositionDescription()); 2127 } 2128 } else { 2129 sa.recycle(); 2130 throw new XmlPullParserException("<" + tagName 2131 + "> requires an android:value or android:resource attribute at " 2132 + attrs.getPositionDescription()); 2133 } 2134 2135 sa.recycle(); 2136 } 2137 2138 /** 2139 * Retrieve underlying AssetManager storage for these resources. 2140 */ 2141 public final AssetManager getAssets() { 2142 return mAssets; 2143 } 2144 2145 /** 2146 * Call this to remove all cached loaded layout resources from the 2147 * Resources object. Only intended for use with performance testing 2148 * tools. 2149 */ 2150 public final void flushLayoutCache() { 2151 synchronized (mCachedXmlBlockIds) { 2152 // First see if this block is in our cache. 2153 final int num = mCachedXmlBlockIds.length; 2154 for (int i=0; i<num; i++) { 2155 mCachedXmlBlockIds[i] = -0; 2156 XmlBlock oldBlock = mCachedXmlBlocks[i]; 2157 if (oldBlock != null) { 2158 oldBlock.close(); 2159 } 2160 mCachedXmlBlocks[i] = null; 2161 } 2162 } 2163 } 2164 2165 /** 2166 * Start preloading of resource data using this Resources object. Only 2167 * for use by the zygote process for loading common system resources. 2168 * {@hide} 2169 */ 2170 public final void startPreloading() { 2171 synchronized (sSync) { 2172 if (sPreloaded) { 2173 throw new IllegalStateException("Resources already preloaded"); 2174 } 2175 sPreloaded = true; 2176 mPreloading = true; 2177 sPreloadedDensity = DisplayMetrics.DENSITY_DEVICE; 2178 mConfiguration.densityDpi = sPreloadedDensity; 2179 updateConfiguration(null, null); 2180 } 2181 } 2182 2183 /** 2184 * Called by zygote when it is done preloading resources, to change back 2185 * to normal Resources operation. 2186 */ 2187 public final void finishPreloading() { 2188 if (mPreloading) { 2189 mPreloading = false; 2190 flushLayoutCache(); 2191 } 2192 } 2193 2194 /** 2195 * @hide 2196 */ 2197 public LongSparseArray<ConstantState> getPreloadedDrawables() { 2198 return sPreloadedDrawables[0]; 2199 } 2200 2201 private boolean verifyPreloadConfig(int changingConfigurations, int allowVarying, 2202 int resourceId, String name) { 2203 // We allow preloading of resources even if they vary by font scale (which 2204 // doesn't impact resource selection) or density (which we handle specially by 2205 // simply turning off all preloading), as well as any other configs specified 2206 // by the caller. 2207 if (((changingConfigurations&~(ActivityInfo.CONFIG_FONT_SCALE | 2208 ActivityInfo.CONFIG_DENSITY)) & ~allowVarying) != 0) { 2209 String resName; 2210 try { 2211 resName = getResourceName(resourceId); 2212 } catch (NotFoundException e) { 2213 resName = "?"; 2214 } 2215 // This should never happen in production, so we should log a 2216 // warning even if we're not debugging. 2217 Log.w(TAG, "Preloaded " + name + " resource #0x" 2218 + Integer.toHexString(resourceId) 2219 + " (" + resName + ") that varies with configuration!!"); 2220 return false; 2221 } 2222 if (TRACE_FOR_PRELOAD) { 2223 String resName; 2224 try { 2225 resName = getResourceName(resourceId); 2226 } catch (NotFoundException e) { 2227 resName = "?"; 2228 } 2229 Log.w(TAG, "Preloading " + name + " resource #0x" 2230 + Integer.toHexString(resourceId) 2231 + " (" + resName + ")"); 2232 } 2233 return true; 2234 } 2235 2236 /*package*/ Drawable loadDrawable(TypedValue value, int id, Theme theme) throws NotFoundException { 2237 if (TRACE_FOR_PRELOAD) { 2238 // Log only framework resources 2239 if ((id >>> 24) == 0x1) { 2240 final String name = getResourceName(id); 2241 if (name != null) { 2242 Log.d("PreloadDrawable", name); 2243 } 2244 } 2245 } 2246 2247 final boolean isColorDrawable; 2248 final ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches; 2249 final long key; 2250 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT 2251 && value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2252 isColorDrawable = true; 2253 caches = mColorDrawableCache; 2254 key = value.data; 2255 } else { 2256 isColorDrawable = false; 2257 caches = mDrawableCache; 2258 key = (((long) value.assetCookie) << 32) | value.data; 2259 } 2260 2261 // First, check whether we have a cached version of this drawable 2262 // that was inflated against the specified theme. 2263 if (!mPreloading) { 2264 final Drawable cachedDrawable = getCachedDrawable(caches, key, theme); 2265 if (cachedDrawable != null) { 2266 return cachedDrawable; 2267 } 2268 } 2269 2270 // Next, check preloaded drawables. These are unthemed but may have 2271 // themeable attributes. 2272 final ConstantState cs; 2273 if (isColorDrawable) { 2274 cs = sPreloadedColorDrawables.get(key); 2275 } else { 2276 cs = sPreloadedDrawables[mConfiguration.getLayoutDirection()].get(key); 2277 } 2278 2279 final Drawable dr; 2280 if (cs != null) { 2281 dr = cs.newDrawable(this, theme); 2282 } else if (isColorDrawable) { 2283 dr = new ColorDrawable(value.data); 2284 } else { 2285 dr = loadDrawableForCookie(value, id, theme); 2286 } 2287 2288 // If we were able to obtain a drawable, store it in the appropriate 2289 // cache (either preload or themed). 2290 if (dr != null) { 2291 dr.setChangingConfigurations(value.changingConfigurations); 2292 cacheDrawable(value, theme, isColorDrawable, caches, key, dr); 2293 } 2294 2295 return dr; 2296 } 2297 2298 private void cacheDrawable(TypedValue value, Theme theme, boolean isColorDrawable, 2299 ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches, 2300 long key, Drawable dr) { 2301 final ConstantState cs = dr.getConstantState(); 2302 if (cs == null) { 2303 return; 2304 } 2305 2306 if (mPreloading) { 2307 // Preloaded drawables never have a theme, but may be themeable. 2308 final int changingConfigs = cs.getChangingConfigurations(); 2309 if (isColorDrawable) { 2310 if (verifyPreloadConfig(changingConfigs, 0, value.resourceId, "drawable")) { 2311 sPreloadedColorDrawables.put(key, cs); 2312 } 2313 } else { 2314 if (verifyPreloadConfig( 2315 changingConfigs, LAYOUT_DIR_CONFIG, value.resourceId, "drawable")) { 2316 if ((changingConfigs & LAYOUT_DIR_CONFIG) == 0) { 2317 // If this resource does not vary based on layout direction, 2318 // we can put it in all of the preload maps. 2319 sPreloadedDrawables[0].put(key, cs); 2320 sPreloadedDrawables[1].put(key, cs); 2321 } else { 2322 // Otherwise, only in the layout dir we loaded it for. 2323 sPreloadedDrawables[mConfiguration.getLayoutDirection()].put(key, cs); 2324 } 2325 } 2326 } 2327 } else { 2328 synchronized (mAccessLock) { 2329 final String themeKey = theme == null ? "" : theme.mKey; 2330 LongSparseArray<WeakReference<ConstantState>> themedCache = caches.get(themeKey); 2331 if (themedCache == null) { 2332 themedCache = new LongSparseArray<WeakReference<ConstantState>>(1); 2333 caches.put(themeKey, themedCache); 2334 } 2335 themedCache.put(key, new WeakReference<ConstantState>(cs)); 2336 } 2337 } 2338 } 2339 2340 /** 2341 * Loads a drawable from XML or resources stream. 2342 */ 2343 private Drawable loadDrawableForCookie(TypedValue value, int id, Theme theme) { 2344 if (value.string == null) { 2345 throw new NotFoundException("Resource \"" + getResourceName(id) + "\" (" 2346 + Integer.toHexString(id) + ") is not a Drawable (color or path): " + value); 2347 } 2348 2349 final String file = value.string.toString(); 2350 2351 if (TRACE_FOR_MISS_PRELOAD) { 2352 // Log only framework resources 2353 if ((id >>> 24) == 0x1) { 2354 final String name = getResourceName(id); 2355 if (name != null) { 2356 Log.d(TAG, "Loading framework drawable #" + Integer.toHexString(id) 2357 + ": " + name + " at " + file); 2358 } 2359 } 2360 } 2361 2362 if (DEBUG_LOAD) { 2363 Log.v(TAG, "Loading drawable for cookie " + value.assetCookie + ": " + file); 2364 } 2365 2366 final Drawable dr; 2367 2368 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 2369 try { 2370 if (file.endsWith(".xml")) { 2371 final XmlResourceParser rp = loadXmlResourceParser( 2372 file, id, value.assetCookie, "drawable"); 2373 dr = Drawable.createFromXml(this, rp, theme); 2374 rp.close(); 2375 } else { 2376 final InputStream is = mAssets.openNonAsset( 2377 value.assetCookie, file, AssetManager.ACCESS_STREAMING); 2378 dr = Drawable.createFromResourceStream(this, value, is, file, null); 2379 is.close(); 2380 } 2381 } catch (Exception e) { 2382 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2383 final NotFoundException rnf = new NotFoundException( 2384 "File " + file + " from drawable resource ID #0x" + Integer.toHexString(id)); 2385 rnf.initCause(e); 2386 throw rnf; 2387 } 2388 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2389 2390 return dr; 2391 } 2392 2393 private Drawable getCachedDrawable( 2394 ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches, 2395 long key, Theme theme) { 2396 synchronized (mAccessLock) { 2397 final String themeKey = theme != null ? theme.mKey : ""; 2398 final LongSparseArray<WeakReference<ConstantState>> themedCache = caches.get(themeKey); 2399 if (themedCache != null) { 2400 final Drawable themedDrawable = getCachedDrawableLocked(themedCache, key); 2401 if (themedDrawable != null) { 2402 return themedDrawable; 2403 } 2404 } 2405 2406 // No cached drawable, we'll need to create a new one. 2407 return null; 2408 } 2409 } 2410 2411 private ConstantState getConstantStateLocked( 2412 LongSparseArray<WeakReference<ConstantState>> drawableCache, long key) { 2413 final WeakReference<ConstantState> wr = drawableCache.get(key); 2414 if (wr != null) { // we have the key 2415 final ConstantState entry = wr.get(); 2416 if (entry != null) { 2417 //Log.i(TAG, "Returning cached drawable @ #" + 2418 // Integer.toHexString(((Integer)key).intValue()) 2419 // + " in " + this + ": " + entry); 2420 return entry; 2421 } else { // our entry has been purged 2422 drawableCache.delete(key); 2423 } 2424 } 2425 return null; 2426 } 2427 2428 private Drawable getCachedDrawableLocked( 2429 LongSparseArray<WeakReference<ConstantState>> drawableCache, long key) { 2430 final ConstantState entry = getConstantStateLocked(drawableCache, key); 2431 if (entry != null) { 2432 return entry.newDrawable(this); 2433 } 2434 return null; 2435 } 2436 2437 /*package*/ ColorStateList loadColorStateList(TypedValue value, int id) 2438 throws NotFoundException { 2439 if (TRACE_FOR_PRELOAD) { 2440 // Log only framework resources 2441 if ((id >>> 24) == 0x1) { 2442 final String name = getResourceName(id); 2443 if (name != null) android.util.Log.d("PreloadColorStateList", name); 2444 } 2445 } 2446 2447 final long key = (((long) value.assetCookie) << 32) | value.data; 2448 2449 ColorStateList csl; 2450 2451 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 2452 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2453 2454 csl = sPreloadedColorStateLists.get(key); 2455 if (csl != null) { 2456 return csl; 2457 } 2458 2459 csl = ColorStateList.valueOf(value.data); 2460 if (mPreloading) { 2461 if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId, 2462 "color")) { 2463 sPreloadedColorStateLists.put(key, csl); 2464 } 2465 } 2466 2467 return csl; 2468 } 2469 2470 csl = getCachedColorStateList(key); 2471 if (csl != null) { 2472 return csl; 2473 } 2474 2475 csl = sPreloadedColorStateLists.get(key); 2476 if (csl != null) { 2477 return csl; 2478 } 2479 2480 if (value.string == null) { 2481 throw new NotFoundException( 2482 "Resource is not a ColorStateList (color or path): " + value); 2483 } 2484 2485 final String file = value.string.toString(); 2486 2487 if (file.endsWith(".xml")) { 2488 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 2489 try { 2490 final XmlResourceParser rp = loadXmlResourceParser( 2491 file, id, value.assetCookie, "colorstatelist"); 2492 csl = ColorStateList.createFromXml(this, rp); 2493 rp.close(); 2494 } catch (Exception e) { 2495 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2496 NotFoundException rnf = new NotFoundException( 2497 "File " + file + " from color state list resource ID #0x" 2498 + Integer.toHexString(id)); 2499 rnf.initCause(e); 2500 throw rnf; 2501 } 2502 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2503 } else { 2504 throw new NotFoundException( 2505 "File " + file + " from drawable resource ID #0x" 2506 + Integer.toHexString(id) + ": .xml extension required"); 2507 } 2508 2509 if (csl != null) { 2510 if (mPreloading) { 2511 if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId, 2512 "color")) { 2513 sPreloadedColorStateLists.put(key, csl); 2514 } 2515 } else { 2516 synchronized (mAccessLock) { 2517 //Log.i(TAG, "Saving cached color state list @ #" + 2518 // Integer.toHexString(key.intValue()) 2519 // + " in " + this + ": " + csl); 2520 mColorStateListCache.put(key, new WeakReference<ColorStateList>(csl)); 2521 } 2522 } 2523 } 2524 2525 return csl; 2526 } 2527 2528 private ColorStateList getCachedColorStateList(long key) { 2529 synchronized (mAccessLock) { 2530 WeakReference<ColorStateList> wr = mColorStateListCache.get(key); 2531 if (wr != null) { // we have the key 2532 ColorStateList entry = wr.get(); 2533 if (entry != null) { 2534 //Log.i(TAG, "Returning cached color state list @ #" + 2535 // Integer.toHexString(((Integer)key).intValue()) 2536 // + " in " + this + ": " + entry); 2537 return entry; 2538 } else { // our entry has been purged 2539 mColorStateListCache.delete(key); 2540 } 2541 } 2542 } 2543 return null; 2544 } 2545 2546 /*package*/ XmlResourceParser loadXmlResourceParser(int id, String type) 2547 throws NotFoundException { 2548 synchronized (mAccessLock) { 2549 TypedValue value = mTmpValue; 2550 if (value == null) { 2551 mTmpValue = value = new TypedValue(); 2552 } 2553 getValue(id, value, true); 2554 if (value.type == TypedValue.TYPE_STRING) { 2555 return loadXmlResourceParser(value.string.toString(), id, 2556 value.assetCookie, type); 2557 } 2558 throw new NotFoundException( 2559 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 2560 + Integer.toHexString(value.type) + " is not valid"); 2561 } 2562 } 2563 2564 /*package*/ XmlResourceParser loadXmlResourceParser(String file, int id, 2565 int assetCookie, String type) throws NotFoundException { 2566 if (id != 0) { 2567 try { 2568 // These may be compiled... 2569 synchronized (mCachedXmlBlockIds) { 2570 // First see if this block is in our cache. 2571 final int num = mCachedXmlBlockIds.length; 2572 for (int i=0; i<num; i++) { 2573 if (mCachedXmlBlockIds[i] == id) { 2574 //System.out.println("**** REUSING XML BLOCK! id=" 2575 // + id + ", index=" + i); 2576 return mCachedXmlBlocks[i].newParser(); 2577 } 2578 } 2579 2580 // Not in the cache, create a new block and put it at 2581 // the next slot in the cache. 2582 XmlBlock block = mAssets.openXmlBlockAsset( 2583 assetCookie, file); 2584 if (block != null) { 2585 int pos = mLastCachedXmlBlockIndex+1; 2586 if (pos >= num) pos = 0; 2587 mLastCachedXmlBlockIndex = pos; 2588 XmlBlock oldBlock = mCachedXmlBlocks[pos]; 2589 if (oldBlock != null) { 2590 oldBlock.close(); 2591 } 2592 mCachedXmlBlockIds[pos] = id; 2593 mCachedXmlBlocks[pos] = block; 2594 //System.out.println("**** CACHING NEW XML BLOCK! id=" 2595 // + id + ", index=" + pos); 2596 return block.newParser(); 2597 } 2598 } 2599 } catch (Exception e) { 2600 NotFoundException rnf = new NotFoundException( 2601 "File " + file + " from xml type " + type + " resource ID #0x" 2602 + Integer.toHexString(id)); 2603 rnf.initCause(e); 2604 throw rnf; 2605 } 2606 } 2607 2608 throw new NotFoundException( 2609 "File " + file + " from xml type " + type + " resource ID #0x" 2610 + Integer.toHexString(id)); 2611 } 2612 2613 /*package*/ void recycleCachedStyledAttributes(TypedArray attrs) { 2614 synchronized (mAccessLock) { 2615 final TypedArray cached = mCachedStyledAttributes; 2616 if (cached == null || cached.mData.length < attrs.mData.length) { 2617 mCachedStyledAttributes = attrs; 2618 } 2619 } 2620 } 2621 2622 private Resources() { 2623 mAssets = AssetManager.getSystem(); 2624 // NOTE: Intentionally leaving this uninitialized (all values set 2625 // to zero), so that anyone who tries to do something that requires 2626 // metrics will get a very wrong value. 2627 mConfiguration.setToDefaults(); 2628 mMetrics.setToDefaults(); 2629 updateConfiguration(null, null); 2630 mAssets.ensureStringBlocks(); 2631 } 2632} 2633