Resources.java revision b27b3057687fa6dda8f10d6661eef200f44fdfdf
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.content.res; 18 19import android.animation.Animator; 20import android.animation.StateListAnimator; 21import android.annotation.NonNull; 22import android.icu.text.PluralRules; 23import android.util.Pools.SynchronizedPool; 24import android.view.ViewDebug; 25import com.android.internal.util.XmlUtils; 26 27import org.xmlpull.v1.XmlPullParser; 28import org.xmlpull.v1.XmlPullParserException; 29 30import android.annotation.Nullable; 31import android.content.pm.ActivityInfo; 32import android.graphics.Movie; 33import android.graphics.drawable.Drawable; 34import android.graphics.drawable.ColorDrawable; 35import android.graphics.drawable.Drawable.ConstantState; 36import android.os.Build; 37import android.os.Bundle; 38import android.os.IBinder; 39import android.os.Trace; 40import android.util.ArrayMap; 41import android.util.AttributeSet; 42import android.util.DisplayMetrics; 43import android.util.Log; 44import android.util.Slog; 45import android.util.TypedValue; 46import android.util.LongSparseArray; 47 48import java.io.IOException; 49import java.io.InputStream; 50import java.lang.ref.WeakReference; 51import java.util.Locale; 52 53/** 54 * Class for accessing an application's resources. This sits on top of the 55 * asset manager of the application (accessible through {@link #getAssets}) and 56 * provides a high-level API for getting typed data from the assets. 57 * 58 * <p>The Android resource system keeps track of all non-code assets associated with an 59 * application. You can use this class to access your application's resources. You can generally 60 * acquire the {@link android.content.res.Resources} instance associated with your application 61 * with {@link android.content.Context#getResources getResources()}.</p> 62 * 63 * <p>The Android SDK tools compile your application's resources into the application binary 64 * at build time. To use a resource, you must install it correctly in the source tree (inside 65 * your project's {@code res/} directory) and build your application. As part of the build 66 * process, the SDK tools generate symbols for each resource, which you can use in your application 67 * code to access the resources.</p> 68 * 69 * <p>Using application resources makes it easy to update various characteristics of your 70 * application without modifying code, and—by providing sets of alternative 71 * resources—enables you to optimize your application for a variety of device configurations 72 * (such as for different languages and screen sizes). This is an important aspect of developing 73 * Android applications that are compatible on different types of devices.</p> 74 * 75 * <p>For more information about using resources, see the documentation about <a 76 * href="{@docRoot}guide/topics/resources/index.html">Application Resources</a>.</p> 77 */ 78public class Resources { 79 static final String TAG = "Resources"; 80 81 private static final boolean DEBUG_LOAD = false; 82 private static final boolean DEBUG_CONFIG = false; 83 private static final boolean TRACE_FOR_PRELOAD = false; 84 private static final boolean TRACE_FOR_MISS_PRELOAD = false; 85 86 private static final int LAYOUT_DIR_CONFIG = ActivityInfo.activityInfoConfigToNative( 87 ActivityInfo.CONFIG_LAYOUT_DIRECTION); 88 89 private static final int ID_OTHER = 0x01000004; 90 91 private static final Object sSync = new Object(); 92 93 // Information about preloaded resources. Note that they are not 94 // protected by a lock, because while preloading in zygote we are all 95 // single-threaded, and after that these are immutable. 96 private static final LongSparseArray<ConstantState>[] sPreloadedDrawables; 97 private static final LongSparseArray<ConstantState> sPreloadedColorDrawables 98 = new LongSparseArray<ConstantState>(); 99 private static final LongSparseArray<ColorStateList> sPreloadedColorStateLists 100 = new LongSparseArray<ColorStateList>(); 101 102 // Pool of TypedArrays targeted to this Resources object. 103 final SynchronizedPool<TypedArray> mTypedArrayPool = new SynchronizedPool<TypedArray>(5); 104 105 // Used by BridgeResources in layoutlib 106 static Resources mSystem = null; 107 108 private static boolean sPreloaded; 109 private static int sPreloadedDensity; 110 111 // These are protected by mAccessLock. 112 private final Object mAccessLock = new Object(); 113 private final Configuration mTmpConfig = new Configuration(); 114 private final ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> mDrawableCache = 115 new ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>>(); 116 private final ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> mColorDrawableCache = 117 new ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>>(); 118 private final LongSparseArray<WeakReference<ColorStateList>> mColorStateListCache = 119 new LongSparseArray<WeakReference<ColorStateList>>(); 120 private final ConfigurationBoundResourceCache<Animator> mAnimatorCache = 121 new ConfigurationBoundResourceCache<Animator>(this); 122 private final ConfigurationBoundResourceCache<StateListAnimator> mStateListAnimatorCache = 123 new ConfigurationBoundResourceCache<StateListAnimator>(this); 124 125 private TypedValue mTmpValue = new TypedValue(); 126 private boolean mPreloading; 127 128 private TypedArray mCachedStyledAttributes = null; 129 130 private int mLastCachedXmlBlockIndex = -1; 131 private final int[] mCachedXmlBlockIds = { 0, 0, 0, 0 }; 132 private final XmlBlock[] mCachedXmlBlocks = new XmlBlock[4]; 133 134 final AssetManager mAssets; 135 final DisplayMetrics mMetrics = new DisplayMetrics(); 136 137 private final Configuration mConfiguration = new Configuration(); 138 private PluralRules mPluralRule; 139 140 private CompatibilityInfo mCompatibilityInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 141 142 @SuppressWarnings("unused") 143 private WeakReference<IBinder> mToken; 144 145 static { 146 sPreloadedDrawables = new LongSparseArray[2]; 147 sPreloadedDrawables[0] = new LongSparseArray<ConstantState>(); 148 sPreloadedDrawables[1] = new LongSparseArray<ConstantState>(); 149 } 150 151 /** 152 * Returns the most appropriate default theme for the specified target SDK version. 153 * <ul> 154 * <li>Below API 11: Gingerbread 155 * <li>APIs 11 thru 14: Holo 156 * <li>APIs 14 thru XX: Device default dark 157 * <li>API XX and above: Device default light with dark action bar 158 * </ul> 159 * 160 * @param curTheme The current theme, or 0 if not specified. 161 * @param targetSdkVersion The target SDK version. 162 * @return A theme resource identifier 163 * @hide 164 */ 165 public static int selectDefaultTheme(int curTheme, int targetSdkVersion) { 166 return selectSystemTheme(curTheme, targetSdkVersion, 167 com.android.internal.R.style.Theme, 168 com.android.internal.R.style.Theme_Holo, 169 com.android.internal.R.style.Theme_DeviceDefault, 170 com.android.internal.R.style.Theme_DeviceDefault_Light_DarkActionBar); 171 } 172 173 /** @hide */ 174 public static int selectSystemTheme(int curTheme, int targetSdkVersion, int orig, int holo, 175 int dark, int deviceDefault) { 176 if (curTheme != 0) { 177 return curTheme; 178 } 179 if (targetSdkVersion < Build.VERSION_CODES.HONEYCOMB) { 180 return orig; 181 } 182 if (targetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 183 return holo; 184 } 185 if (targetSdkVersion < Build.VERSION_CODES.CUR_DEVELOPMENT) { 186 return dark; 187 } 188 return deviceDefault; 189 } 190 191 /** 192 * Used by AnimatorInflater. 193 * 194 * @hide 195 */ 196 public ConfigurationBoundResourceCache<Animator> getAnimatorCache() { 197 return mAnimatorCache; 198 } 199 200 /** 201 * Used by AnimatorInflater. 202 * 203 * @hide 204 */ 205 public ConfigurationBoundResourceCache<StateListAnimator> getStateListAnimatorCache() { 206 return mStateListAnimatorCache; 207 } 208 209 /** 210 * This exception is thrown by the resource APIs when a requested resource 211 * can not be found. 212 */ 213 public static class NotFoundException extends RuntimeException { 214 public NotFoundException() { 215 } 216 217 public NotFoundException(String name) { 218 super(name); 219 } 220 } 221 222 /** 223 * Create a new Resources object on top of an existing set of assets in an 224 * AssetManager. 225 * 226 * @param assets Previously created AssetManager. 227 * @param metrics Current display metrics to consider when 228 * selecting/computing resource values. 229 * @param config Desired device configuration to consider when 230 * selecting/computing resource values (optional). 231 */ 232 public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config) { 233 this(assets, metrics, config, CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO, null); 234 } 235 236 /** 237 * Creates a new Resources object with CompatibilityInfo. 238 * 239 * @param assets Previously created AssetManager. 240 * @param metrics Current display metrics to consider when 241 * selecting/computing resource values. 242 * @param config Desired device configuration to consider when 243 * selecting/computing resource values (optional). 244 * @param compatInfo this resource's compatibility info. Must not be null. 245 * @param token The Activity token for determining stack affiliation. Usually null. 246 * @hide 247 */ 248 public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config, 249 CompatibilityInfo compatInfo, IBinder token) { 250 mAssets = assets; 251 mMetrics.setToDefaults(); 252 if (compatInfo != null) { 253 mCompatibilityInfo = compatInfo; 254 } 255 mToken = new WeakReference<IBinder>(token); 256 updateConfiguration(config, metrics); 257 assets.ensureStringBlocks(); 258 } 259 260 /** 261 * Return a global shared Resources object that provides access to only 262 * system resources (no application resources), and is not configured for 263 * the current screen (can not use dimension units, does not change based 264 * on orientation, etc). 265 */ 266 public static Resources getSystem() { 267 synchronized (sSync) { 268 Resources ret = mSystem; 269 if (ret == null) { 270 ret = new Resources(); 271 mSystem = ret; 272 } 273 274 return ret; 275 } 276 } 277 278 /** 279 * Return the string value associated with a particular resource ID. The 280 * returned object will be a String if this is a plain string; it will be 281 * some other type of CharSequence if it is styled. 282 * {@more} 283 * 284 * @param id The desired resource identifier, as generated by the aapt 285 * tool. This integer encodes the package, type, and resource 286 * entry. The value 0 is an invalid identifier. 287 * 288 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 289 * 290 * @return CharSequence The string data associated with the resource, plus 291 * possibly styled text information. 292 */ 293 public CharSequence getText(int id) throws NotFoundException { 294 CharSequence res = mAssets.getResourceText(id); 295 if (res != null) { 296 return res; 297 } 298 throw new NotFoundException("String resource ID #0x" 299 + Integer.toHexString(id)); 300 } 301 302 /** 303 * Returns the character sequence necessary for grammatically correct pluralization 304 * of the given resource ID for the given quantity. 305 * Note that the character sequence is selected based solely on grammatical necessity, 306 * and that such rules differ between languages. Do not assume you know which string 307 * will be returned for a given quantity. See 308 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 309 * for more detail. 310 * 311 * @param id The desired resource identifier, as generated by the aapt 312 * tool. This integer encodes the package, type, and resource 313 * entry. The value 0 is an invalid identifier. 314 * @param quantity The number used to get the correct string for the current language's 315 * plural rules. 316 * 317 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 318 * 319 * @return CharSequence The string data associated with the resource, plus 320 * possibly styled text information. 321 */ 322 public CharSequence getQuantityText(int id, int quantity) throws NotFoundException { 323 PluralRules rule = getPluralRule(); 324 CharSequence res = mAssets.getResourceBagText(id, 325 attrForQuantityCode(rule.select(quantity))); 326 if (res != null) { 327 return res; 328 } 329 res = mAssets.getResourceBagText(id, ID_OTHER); 330 if (res != null) { 331 return res; 332 } 333 throw new NotFoundException("Plural resource ID #0x" + Integer.toHexString(id) 334 + " quantity=" + quantity 335 + " item=" + rule.select(quantity)); 336 } 337 338 private PluralRules getPluralRule() { 339 synchronized (sSync) { 340 if (mPluralRule == null) { 341 mPluralRule = PluralRules.forLocale(mConfiguration.locale); 342 } 343 return mPluralRule; 344 } 345 } 346 347 private static int attrForQuantityCode(String quantityCode) { 348 switch (quantityCode) { 349 case PluralRules.KEYWORD_ZERO: return 0x01000005; 350 case PluralRules.KEYWORD_ONE: return 0x01000006; 351 case PluralRules.KEYWORD_TWO: return 0x01000007; 352 case PluralRules.KEYWORD_FEW: return 0x01000008; 353 case PluralRules.KEYWORD_MANY: return 0x01000009; 354 default: return ID_OTHER; 355 } 356 } 357 358 /** 359 * Return the string value associated with a particular resource ID. It 360 * will be stripped of any styled text information. 361 * {@more} 362 * 363 * @param id The desired resource identifier, as generated by the aapt 364 * tool. This integer encodes the package, type, and resource 365 * entry. The value 0 is an invalid identifier. 366 * 367 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 368 * 369 * @return String The string data associated with the resource, 370 * stripped of styled text information. 371 */ 372 public String getString(int id) throws NotFoundException { 373 CharSequence res = getText(id); 374 if (res != null) { 375 return res.toString(); 376 } 377 throw new NotFoundException("String resource ID #0x" 378 + Integer.toHexString(id)); 379 } 380 381 382 /** 383 * Return the string value associated with a particular resource ID, 384 * substituting the format arguments as defined in {@link java.util.Formatter} 385 * and {@link java.lang.String#format}. It will be stripped of any styled text 386 * information. 387 * {@more} 388 * 389 * @param id The desired resource identifier, as generated by the aapt 390 * tool. This integer encodes the package, type, and resource 391 * entry. The value 0 is an invalid identifier. 392 * 393 * @param formatArgs The format arguments that will be used for substitution. 394 * 395 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 396 * 397 * @return String The string data associated with the resource, 398 * stripped of styled text information. 399 */ 400 public String getString(int id, Object... formatArgs) throws NotFoundException { 401 String raw = getString(id); 402 return String.format(mConfiguration.locale, raw, formatArgs); 403 } 404 405 /** 406 * Formats the string necessary for grammatically correct pluralization 407 * of the given resource ID for the given quantity, using the given arguments. 408 * Note that the string is selected based solely on grammatical necessity, 409 * and that such rules differ between languages. Do not assume you know which string 410 * will be returned for a given quantity. See 411 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 412 * for more detail. 413 * 414 * <p>Substitution of format arguments works as if using 415 * {@link java.util.Formatter} and {@link java.lang.String#format}. 416 * The resulting string will be stripped of any styled text information. 417 * 418 * @param id The desired resource identifier, as generated by the aapt 419 * tool. This integer encodes the package, type, and resource 420 * entry. The value 0 is an invalid identifier. 421 * @param quantity The number used to get the correct string for the current language's 422 * plural rules. 423 * @param formatArgs The format arguments that will be used for substitution. 424 * 425 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 426 * 427 * @return String The string data associated with the resource, 428 * stripped of styled text information. 429 */ 430 public String getQuantityString(int id, int quantity, Object... formatArgs) 431 throws NotFoundException { 432 String raw = getQuantityText(id, quantity).toString(); 433 return String.format(mConfiguration.locale, raw, formatArgs); 434 } 435 436 /** 437 * Returns the string necessary for grammatically correct pluralization 438 * of the given resource ID for the given quantity. 439 * Note that the string is selected based solely on grammatical necessity, 440 * and that such rules differ between languages. Do not assume you know which string 441 * will be returned for a given quantity. See 442 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 443 * for more detail. 444 * 445 * @param id The desired resource identifier, as generated by the aapt 446 * tool. This integer encodes the package, type, and resource 447 * entry. The value 0 is an invalid identifier. 448 * @param quantity The number used to get the correct string for the current language's 449 * plural rules. 450 * 451 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 452 * 453 * @return String The string data associated with the resource, 454 * stripped of styled text information. 455 */ 456 public String getQuantityString(int id, int quantity) throws NotFoundException { 457 return getQuantityText(id, quantity).toString(); 458 } 459 460 /** 461 * Return the string value associated with a particular resource ID. The 462 * returned object will be a String if this is a plain string; it will be 463 * some other type of CharSequence if it is styled. 464 * 465 * @param id The desired resource identifier, as generated by the aapt 466 * tool. This integer encodes the package, type, and resource 467 * entry. The value 0 is an invalid identifier. 468 * 469 * @param def The default CharSequence to return. 470 * 471 * @return CharSequence The string data associated with the resource, plus 472 * possibly styled text information, or def if id is 0 or not found. 473 */ 474 public CharSequence getText(int id, CharSequence def) { 475 CharSequence res = id != 0 ? mAssets.getResourceText(id) : null; 476 return res != null ? res : def; 477 } 478 479 /** 480 * Return the styled text array associated with a particular resource ID. 481 * 482 * @param id The desired resource identifier, as generated by the aapt 483 * tool. This integer encodes the package, type, and resource 484 * entry. The value 0 is an invalid identifier. 485 * 486 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 487 * 488 * @return The styled text array associated with the resource. 489 */ 490 public CharSequence[] getTextArray(int id) throws NotFoundException { 491 CharSequence[] res = mAssets.getResourceTextArray(id); 492 if (res != null) { 493 return res; 494 } 495 throw new NotFoundException("Text array resource ID #0x" 496 + Integer.toHexString(id)); 497 } 498 499 /** 500 * Return the string array associated with a particular resource ID. 501 * 502 * @param id The desired resource identifier, as generated by the aapt 503 * tool. This integer encodes the package, type, and resource 504 * entry. The value 0 is an invalid identifier. 505 * 506 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 507 * 508 * @return The string array associated with the resource. 509 */ 510 public String[] getStringArray(int id) throws NotFoundException { 511 String[] res = mAssets.getResourceStringArray(id); 512 if (res != null) { 513 return res; 514 } 515 throw new NotFoundException("String array resource ID #0x" 516 + Integer.toHexString(id)); 517 } 518 519 /** 520 * Return the int array associated with a particular resource ID. 521 * 522 * @param id The desired resource identifier, as generated by the aapt 523 * tool. This integer encodes the package, type, and resource 524 * entry. The value 0 is an invalid identifier. 525 * 526 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 527 * 528 * @return The int array associated with the resource. 529 */ 530 public int[] getIntArray(int id) throws NotFoundException { 531 int[] res = mAssets.getArrayIntResource(id); 532 if (res != null) { 533 return res; 534 } 535 throw new NotFoundException("Int array resource ID #0x" 536 + Integer.toHexString(id)); 537 } 538 539 /** 540 * Return an array of heterogeneous values. 541 * 542 * @param id The desired resource identifier, as generated by the aapt 543 * tool. This integer encodes the package, type, and resource 544 * entry. The value 0 is an invalid identifier. 545 * 546 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 547 * 548 * @return Returns a TypedArray holding an array of the array values. 549 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 550 * when done with it. 551 */ 552 public TypedArray obtainTypedArray(int id) throws NotFoundException { 553 int len = mAssets.getArraySize(id); 554 if (len < 0) { 555 throw new NotFoundException("Array resource ID #0x" 556 + Integer.toHexString(id)); 557 } 558 559 TypedArray array = TypedArray.obtain(this, len); 560 array.mLength = mAssets.retrieveArray(id, array.mData); 561 array.mIndices[0] = 0; 562 563 return array; 564 } 565 566 /** 567 * Retrieve a dimensional for a particular resource ID. Unit 568 * conversions are based on the current {@link DisplayMetrics} associated 569 * with the resources. 570 * 571 * @param id The desired resource identifier, as generated by the aapt 572 * tool. This integer encodes the package, type, and resource 573 * entry. The value 0 is an invalid identifier. 574 * 575 * @return Resource dimension value multiplied by the appropriate 576 * metric. 577 * 578 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 579 * 580 * @see #getDimensionPixelOffset 581 * @see #getDimensionPixelSize 582 */ 583 public float getDimension(int id) throws NotFoundException { 584 synchronized (mAccessLock) { 585 TypedValue value = mTmpValue; 586 if (value == null) { 587 mTmpValue = value = new TypedValue(); 588 } 589 getValue(id, value, true); 590 if (value.type == TypedValue.TYPE_DIMENSION) { 591 return TypedValue.complexToDimension(value.data, mMetrics); 592 } 593 throw new NotFoundException( 594 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 595 + Integer.toHexString(value.type) + " is not valid"); 596 } 597 } 598 599 /** 600 * Retrieve a dimensional for a particular resource ID for use 601 * as an offset in raw pixels. This is the same as 602 * {@link #getDimension}, except the returned value is converted to 603 * integer pixels for you. An offset conversion involves simply 604 * truncating the base value to an integer. 605 * 606 * @param id The desired resource identifier, as generated by the aapt 607 * tool. This integer encodes the package, type, and resource 608 * entry. The value 0 is an invalid identifier. 609 * 610 * @return Resource dimension value multiplied by the appropriate 611 * metric and truncated to integer pixels. 612 * 613 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 614 * 615 * @see #getDimension 616 * @see #getDimensionPixelSize 617 */ 618 public int getDimensionPixelOffset(int id) throws NotFoundException { 619 synchronized (mAccessLock) { 620 TypedValue value = mTmpValue; 621 if (value == null) { 622 mTmpValue = value = new TypedValue(); 623 } 624 getValue(id, value, true); 625 if (value.type == TypedValue.TYPE_DIMENSION) { 626 return TypedValue.complexToDimensionPixelOffset( 627 value.data, mMetrics); 628 } 629 throw new NotFoundException( 630 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 631 + Integer.toHexString(value.type) + " is not valid"); 632 } 633 } 634 635 /** 636 * Retrieve a dimensional for a particular resource ID for use 637 * as a size in raw pixels. This is the same as 638 * {@link #getDimension}, except the returned value is converted to 639 * integer pixels for use as a size. A size conversion involves 640 * rounding the base value, and ensuring that a non-zero base value 641 * is at least one pixel in size. 642 * 643 * @param id The desired resource identifier, as generated by the aapt 644 * tool. This integer encodes the package, type, and resource 645 * entry. The value 0 is an invalid identifier. 646 * 647 * @return Resource dimension value multiplied by the appropriate 648 * metric and truncated to integer pixels. 649 * 650 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 651 * 652 * @see #getDimension 653 * @see #getDimensionPixelOffset 654 */ 655 public int getDimensionPixelSize(int id) throws NotFoundException { 656 synchronized (mAccessLock) { 657 TypedValue value = mTmpValue; 658 if (value == null) { 659 mTmpValue = value = new TypedValue(); 660 } 661 getValue(id, value, true); 662 if (value.type == TypedValue.TYPE_DIMENSION) { 663 return TypedValue.complexToDimensionPixelSize( 664 value.data, mMetrics); 665 } 666 throw new NotFoundException( 667 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 668 + Integer.toHexString(value.type) + " is not valid"); 669 } 670 } 671 672 /** 673 * Retrieve a fractional unit for a particular resource ID. 674 * 675 * @param id The desired resource identifier, as generated by the aapt 676 * tool. This integer encodes the package, type, and resource 677 * entry. The value 0 is an invalid identifier. 678 * @param base The base value of this fraction. In other words, a 679 * standard fraction is multiplied by this value. 680 * @param pbase The parent base value of this fraction. In other 681 * words, a parent fraction (nn%p) is multiplied by this 682 * value. 683 * 684 * @return Attribute fractional value multiplied by the appropriate 685 * base value. 686 * 687 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 688 */ 689 public float getFraction(int id, int base, int pbase) { 690 synchronized (mAccessLock) { 691 TypedValue value = mTmpValue; 692 if (value == null) { 693 mTmpValue = value = new TypedValue(); 694 } 695 getValue(id, value, true); 696 if (value.type == TypedValue.TYPE_FRACTION) { 697 return TypedValue.complexToFraction(value.data, base, pbase); 698 } 699 throw new NotFoundException( 700 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 701 + Integer.toHexString(value.type) + " is not valid"); 702 } 703 } 704 705 /** 706 * Return a drawable object associated with a particular resource ID. 707 * Various types of objects will be returned depending on the underlying 708 * resource -- for example, a solid color, PNG image, scalable image, etc. 709 * The Drawable API hides these implementation details. 710 * 711 * <p class="note"><strong>Note:</strong> Prior to 712 * {@link android.os.Build.VERSION_CODES#JELLY_BEAN}, this function 713 * would not correctly retrieve the final configuration density when 714 * the resource ID passed here is an alias to another Drawable resource. 715 * This means that if the density configuration of the alias resource 716 * is different than the actual resource, the density of the returned 717 * Drawable would be incorrect, resulting in bad scaling. To work 718 * around this, you can instead retrieve the Drawable through 719 * {@link TypedArray#getDrawable TypedArray.getDrawable}. Use 720 * {@link android.content.Context#obtainStyledAttributes(int[]) 721 * Context.obtainStyledAttributes} with 722 * an array containing the resource ID of interest to create the TypedArray.</p> 723 * 724 * <p class="note"><strong>Note:</strong> To obtain a themed drawable, use 725 * {@link android.content.Context#getDrawable(int) Context.getDrawable(int)} 726 * or {@link #getDrawable(int, Theme)} passing the desired theme.</p> 727 * 728 * @param id The desired resource identifier, as generated by the aapt 729 * tool. This integer encodes the package, type, and resource 730 * entry. The value 0 is an invalid identifier. 731 * @return Drawable An object that can be used to draw this resource. 732 * @throws NotFoundException Throws NotFoundException if the given ID does 733 * not exist. 734 * @see #getDrawable(int, Theme) 735 * @deprecated Use {@link #getDrawable(int, Theme)} instead. 736 */ 737 @Deprecated 738 @Nullable 739 public Drawable getDrawable(int id) throws NotFoundException { 740 final Drawable d = getDrawable(id, null); 741 if (d != null && d.canApplyTheme()) { 742 Log.w(TAG, "Drawable " + getResourceName(id) + " has unresolved theme " 743 + "attributes! Consider using Resources.getDrawable(int, Theme) or " 744 + "Context.getDrawable(int).", new RuntimeException()); 745 } 746 return d; 747 } 748 749 /** 750 * Return a drawable object associated with a particular resource ID and 751 * styled for the specified theme. Various types of objects will be 752 * returned depending on the underlying resource -- for example, a solid 753 * color, PNG image, scalable image, etc. 754 * 755 * @param id The desired resource identifier, as generated by the aapt 756 * tool. This integer encodes the package, type, and resource 757 * entry. The value 0 is an invalid identifier. 758 * @param theme The theme used to style the drawable attributes, may be {@code null}. 759 * @return Drawable An object that can be used to draw this resource. 760 * @throws NotFoundException Throws NotFoundException if the given ID does 761 * not exist. 762 */ 763 @Nullable 764 public Drawable getDrawable(int id, @Nullable Theme theme) throws NotFoundException { 765 TypedValue value; 766 synchronized (mAccessLock) { 767 value = mTmpValue; 768 if (value == null) { 769 value = new TypedValue(); 770 } else { 771 mTmpValue = null; 772 } 773 getValue(id, value, true); 774 } 775 final Drawable res = loadDrawable(value, id, theme); 776 synchronized (mAccessLock) { 777 if (mTmpValue == null) { 778 mTmpValue = value; 779 } 780 } 781 return res; 782 } 783 784 /** 785 * Return a drawable object associated with a particular resource ID for the 786 * given screen density in DPI. This will set the drawable's density to be 787 * the device's density multiplied by the ratio of actual drawable density 788 * to requested density. This allows the drawable to be scaled up to the 789 * correct size if needed. Various types of objects will be returned 790 * depending on the underlying resource -- for example, a solid color, PNG 791 * image, scalable image, etc. The Drawable API hides these implementation 792 * details. 793 * 794 * <p class="note"><strong>Note:</strong> To obtain a themed drawable, use 795 * {@link android.content.Context#getDrawable(int) Context.getDrawable(int)} 796 * or {@link #getDrawableForDensity(int, int, Theme)} passing the desired 797 * theme.</p> 798 * 799 * @param id The desired resource identifier, as generated by the aapt tool. 800 * This integer encodes the package, type, and resource entry. 801 * The value 0 is an invalid identifier. 802 * @param density the desired screen density indicated by the resource as 803 * found in {@link DisplayMetrics}. 804 * @return Drawable An object that can be used to draw this resource. 805 * @throws NotFoundException Throws NotFoundException if the given ID does 806 * not exist. 807 * @see #getDrawableForDensity(int, int, Theme) 808 * @deprecated Use {@link #getDrawableForDensity(int, int, Theme)} instead. 809 */ 810 @Deprecated 811 @Nullable 812 public Drawable getDrawableForDensity(int id, int density) throws NotFoundException { 813 return getDrawableForDensity(id, density, null); 814 } 815 816 /** 817 * Return a drawable object associated with a particular resource ID for the 818 * given screen density in DPI and styled for the specified theme. 819 * 820 * @param id The desired resource identifier, as generated by the aapt tool. 821 * This integer encodes the package, type, and resource entry. 822 * The value 0 is an invalid identifier. 823 * @param density The desired screen density indicated by the resource as 824 * found in {@link DisplayMetrics}. 825 * @param theme The theme used to style the drawable attributes, may be {@code null}. 826 * @return Drawable An object that can be used to draw this resource. 827 * @throws NotFoundException Throws NotFoundException if the given ID does 828 * not exist. 829 */ 830 @Nullable 831 public Drawable getDrawableForDensity(int id, int density, @Nullable Theme theme) { 832 TypedValue value; 833 synchronized (mAccessLock) { 834 value = mTmpValue; 835 if (value == null) { 836 value = new TypedValue(); 837 } else { 838 mTmpValue = null; 839 } 840 getValueForDensity(id, density, value, true); 841 842 /* 843 * Pretend the requested density is actually the display density. If 844 * the drawable returned is not the requested density, then force it 845 * to be scaled later by dividing its density by the ratio of 846 * requested density to actual device density. Drawables that have 847 * undefined density or no density don't need to be handled here. 848 */ 849 if (value.density > 0 && value.density != TypedValue.DENSITY_NONE) { 850 if (value.density == density) { 851 value.density = mMetrics.densityDpi; 852 } else { 853 value.density = (value.density * mMetrics.densityDpi) / density; 854 } 855 } 856 } 857 858 final Drawable res = loadDrawable(value, id, theme); 859 synchronized (mAccessLock) { 860 if (mTmpValue == null) { 861 mTmpValue = value; 862 } 863 } 864 return res; 865 } 866 867 /** 868 * Return a movie object associated with the particular resource ID. 869 * @param id The desired resource identifier, as generated by the aapt 870 * tool. This integer encodes the package, type, and resource 871 * entry. The value 0 is an invalid identifier. 872 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 873 * 874 */ 875 public Movie getMovie(int id) throws NotFoundException { 876 InputStream is = openRawResource(id); 877 Movie movie = Movie.decodeStream(is); 878 try { 879 is.close(); 880 } 881 catch (java.io.IOException e) { 882 // don't care, since the return value is valid 883 } 884 return movie; 885 } 886 887 /** 888 * Return a color integer associated with a particular resource ID. 889 * If the resource holds a complex 890 * {@link android.content.res.ColorStateList}, then the default color from 891 * the set is returned. 892 * 893 * @param id The desired resource identifier, as generated by the aapt 894 * tool. This integer encodes the package, type, and resource 895 * entry. The value 0 is an invalid identifier. 896 * 897 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 898 * 899 * @return Returns a single color value in the form 0xAARRGGBB. 900 */ 901 public int getColor(int id) throws NotFoundException { 902 TypedValue value; 903 synchronized (mAccessLock) { 904 value = mTmpValue; 905 if (value == null) { 906 value = new TypedValue(); 907 } 908 getValue(id, value, true); 909 if (value.type >= TypedValue.TYPE_FIRST_INT 910 && value.type <= TypedValue.TYPE_LAST_INT) { 911 mTmpValue = value; 912 return value.data; 913 } else if (value.type != TypedValue.TYPE_STRING) { 914 throw new NotFoundException( 915 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 916 + Integer.toHexString(value.type) + " is not valid"); 917 } 918 mTmpValue = null; 919 } 920 ColorStateList csl = loadColorStateList(value, id); 921 synchronized (mAccessLock) { 922 if (mTmpValue == null) { 923 mTmpValue = value; 924 } 925 } 926 return csl.getDefaultColor(); 927 } 928 929 /** 930 * Return a color state list associated with a particular resource ID. The 931 * resource may contain either a single raw color value, or a complex 932 * {@link android.content.res.ColorStateList} holding multiple possible colors. 933 * 934 * @param id The desired resource identifier of a {@link ColorStateList}, 935 * as generated by the aapt tool. This integer encodes the package, type, and resource 936 * entry. The value 0 is an invalid identifier. 937 * 938 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 939 * 940 * @return Returns a ColorStateList object containing either a single 941 * solid color or multiple colors that can be selected based on a state. 942 */ 943 public ColorStateList getColorStateList(int id) throws NotFoundException { 944 TypedValue value; 945 synchronized (mAccessLock) { 946 value = mTmpValue; 947 if (value == null) { 948 value = new TypedValue(); 949 } else { 950 mTmpValue = null; 951 } 952 getValue(id, value, true); 953 } 954 ColorStateList res = loadColorStateList(value, id); 955 synchronized (mAccessLock) { 956 if (mTmpValue == null) { 957 mTmpValue = value; 958 } 959 } 960 return res; 961 } 962 963 /** 964 * Return a boolean associated with a particular resource ID. This can be 965 * used with any integral resource value, and will return true if it is 966 * non-zero. 967 * 968 * @param id The desired resource identifier, as generated by the aapt 969 * tool. This integer encodes the package, type, and resource 970 * entry. The value 0 is an invalid identifier. 971 * 972 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 973 * 974 * @return Returns the boolean value contained in the resource. 975 */ 976 public boolean getBoolean(int id) throws NotFoundException { 977 synchronized (mAccessLock) { 978 TypedValue value = mTmpValue; 979 if (value == null) { 980 mTmpValue = value = new TypedValue(); 981 } 982 getValue(id, value, true); 983 if (value.type >= TypedValue.TYPE_FIRST_INT 984 && value.type <= TypedValue.TYPE_LAST_INT) { 985 return value.data != 0; 986 } 987 throw new NotFoundException( 988 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 989 + Integer.toHexString(value.type) + " is not valid"); 990 } 991 } 992 993 /** 994 * Return an integer associated with a particular resource ID. 995 * 996 * @param id The desired resource identifier, as generated by the aapt 997 * tool. This integer encodes the package, type, and resource 998 * entry. The value 0 is an invalid identifier. 999 * 1000 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1001 * 1002 * @return Returns the integer value contained in the resource. 1003 */ 1004 public int getInteger(int id) throws NotFoundException { 1005 synchronized (mAccessLock) { 1006 TypedValue value = mTmpValue; 1007 if (value == null) { 1008 mTmpValue = value = new TypedValue(); 1009 } 1010 getValue(id, value, true); 1011 if (value.type >= TypedValue.TYPE_FIRST_INT 1012 && value.type <= TypedValue.TYPE_LAST_INT) { 1013 return value.data; 1014 } 1015 throw new NotFoundException( 1016 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 1017 + Integer.toHexString(value.type) + " is not valid"); 1018 } 1019 } 1020 1021 /** 1022 * Retrieve a floating-point value for a particular resource ID. 1023 * 1024 * @param id The desired resource identifier, as generated by the aapt 1025 * tool. This integer encodes the package, type, and resource 1026 * entry. The value 0 is an invalid identifier. 1027 * 1028 * @return Returns the floating-point value contained in the resource. 1029 * 1030 * @throws NotFoundException Throws NotFoundException if the given ID does 1031 * not exist or is not a floating-point value. 1032 * @hide Pending API council approval. 1033 */ 1034 public float getFloat(int id) { 1035 synchronized (mAccessLock) { 1036 TypedValue value = mTmpValue; 1037 if (value == null) { 1038 mTmpValue = value = new TypedValue(); 1039 } 1040 getValue(id, value, true); 1041 if (value.type == TypedValue.TYPE_FLOAT) { 1042 return value.getFloat(); 1043 } 1044 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id) + " type #0x" 1045 + Integer.toHexString(value.type) + " is not valid"); 1046 } 1047 } 1048 1049 /** 1050 * Return an XmlResourceParser through which you can read a view layout 1051 * description for the given resource ID. This parser has limited 1052 * functionality -- in particular, you can't change its input, and only 1053 * the high-level events are available. 1054 * 1055 * <p>This function is really a simple wrapper for calling 1056 * {@link #getXml} with a layout resource. 1057 * 1058 * @param id The desired resource identifier, as generated by the aapt 1059 * tool. This integer encodes the package, type, and resource 1060 * entry. The value 0 is an invalid identifier. 1061 * 1062 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1063 * 1064 * @return A new parser object through which you can read 1065 * the XML data. 1066 * 1067 * @see #getXml 1068 */ 1069 public XmlResourceParser getLayout(int id) throws NotFoundException { 1070 return loadXmlResourceParser(id, "layout"); 1071 } 1072 1073 /** 1074 * Return an XmlResourceParser through which you can read an animation 1075 * description for the given resource ID. This parser has limited 1076 * functionality -- in particular, you can't change its input, and only 1077 * the high-level events are available. 1078 * 1079 * <p>This function is really a simple wrapper for calling 1080 * {@link #getXml} with an animation resource. 1081 * 1082 * @param id The desired resource identifier, as generated by the aapt 1083 * tool. This integer encodes the package, type, and resource 1084 * entry. The value 0 is an invalid identifier. 1085 * 1086 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1087 * 1088 * @return A new parser object through which you can read 1089 * the XML data. 1090 * 1091 * @see #getXml 1092 */ 1093 public XmlResourceParser getAnimation(int id) throws NotFoundException { 1094 return loadXmlResourceParser(id, "anim"); 1095 } 1096 1097 /** 1098 * Return an XmlResourceParser through which you can read a generic XML 1099 * resource for the given resource ID. 1100 * 1101 * <p>The XmlPullParser implementation returned here has some limited 1102 * functionality. In particular, you can't change its input, and only 1103 * high-level parsing events are available (since the document was 1104 * pre-parsed for you at build time, which involved merging text and 1105 * stripping comments). 1106 * 1107 * @param id The desired resource identifier, as generated by the aapt 1108 * tool. This integer encodes the package, type, and resource 1109 * entry. The value 0 is an invalid identifier. 1110 * 1111 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1112 * 1113 * @return A new parser object through which you can read 1114 * the XML data. 1115 * 1116 * @see android.util.AttributeSet 1117 */ 1118 public XmlResourceParser getXml(int id) throws NotFoundException { 1119 return loadXmlResourceParser(id, "xml"); 1120 } 1121 1122 /** 1123 * Open a data stream for reading a raw resource. This can only be used 1124 * with resources whose value is the name of an asset files -- that is, it can be 1125 * used to open drawable, sound, and raw resources; it will fail on string 1126 * and color resources. 1127 * 1128 * @param id The resource identifier to open, as generated by the appt 1129 * tool. 1130 * 1131 * @return InputStream Access to the resource data. 1132 * 1133 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1134 * 1135 */ 1136 public InputStream openRawResource(int id) throws NotFoundException { 1137 TypedValue value; 1138 synchronized (mAccessLock) { 1139 value = mTmpValue; 1140 if (value == null) { 1141 value = new TypedValue(); 1142 } else { 1143 mTmpValue = null; 1144 } 1145 } 1146 InputStream res = openRawResource(id, value); 1147 synchronized (mAccessLock) { 1148 if (mTmpValue == null) { 1149 mTmpValue = value; 1150 } 1151 } 1152 return res; 1153 } 1154 1155 /** 1156 * Open a data stream for reading a raw resource. This can only be used 1157 * with resources whose value is the name of an asset file -- 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 * @param id The resource identifier to open, as generated by the appt tool. 1162 * @param value The TypedValue object to hold the resource information. 1163 * 1164 * @return InputStream Access to the resource data. 1165 * 1166 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1167 */ 1168 public InputStream openRawResource(int id, TypedValue value) throws NotFoundException { 1169 getValue(id, value, true); 1170 1171 try { 1172 return mAssets.openNonAsset(value.assetCookie, value.string.toString(), 1173 AssetManager.ACCESS_STREAMING); 1174 } catch (Exception e) { 1175 NotFoundException rnf = new NotFoundException("File " + value.string.toString() + 1176 " from drawable resource ID #0x" + Integer.toHexString(id)); 1177 rnf.initCause(e); 1178 throw rnf; 1179 } 1180 } 1181 1182 /** 1183 * Open a file descriptor for reading a raw resource. This can only be used 1184 * with resources whose value is the name of an asset files -- that is, it can be 1185 * used to open drawable, sound, and raw resources; it will fail on string 1186 * and color resources. 1187 * 1188 * <p>This function only works for resources that are stored in the package 1189 * as uncompressed data, which typically includes things like mp3 files 1190 * and png images. 1191 * 1192 * @param id The resource identifier to open, as generated by the appt 1193 * tool. 1194 * 1195 * @return AssetFileDescriptor A new file descriptor you can use to read 1196 * the resource. This includes the file descriptor itself, as well as the 1197 * offset and length of data where the resource appears in the file. A 1198 * null is returned if the file exists but is compressed. 1199 * 1200 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1201 * 1202 */ 1203 public AssetFileDescriptor openRawResourceFd(int id) throws NotFoundException { 1204 TypedValue value; 1205 synchronized (mAccessLock) { 1206 value = mTmpValue; 1207 if (value == null) { 1208 value = new TypedValue(); 1209 } else { 1210 mTmpValue = null; 1211 } 1212 getValue(id, value, true); 1213 } 1214 try { 1215 return mAssets.openNonAssetFd( 1216 value.assetCookie, value.string.toString()); 1217 } catch (Exception e) { 1218 NotFoundException rnf = new NotFoundException( 1219 "File " + value.string.toString() 1220 + " from drawable resource ID #0x" 1221 + Integer.toHexString(id)); 1222 rnf.initCause(e); 1223 throw rnf; 1224 } finally { 1225 synchronized (mAccessLock) { 1226 if (mTmpValue == null) { 1227 mTmpValue = value; 1228 } 1229 } 1230 } 1231 } 1232 1233 /** 1234 * Return the raw data associated with a particular resource ID. 1235 * 1236 * @param id The desired resource identifier, as generated by the aapt 1237 * tool. This integer encodes the package, type, and resource 1238 * entry. The value 0 is an invalid identifier. 1239 * @param outValue Object in which to place the resource data. 1240 * @param resolveRefs If true, a resource that is a reference to another 1241 * resource will be followed so that you receive the 1242 * actual final resource data. If false, the TypedValue 1243 * will be filled in with the reference itself. 1244 * 1245 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1246 * 1247 */ 1248 public void getValue(int id, TypedValue outValue, boolean resolveRefs) 1249 throws NotFoundException { 1250 boolean found = mAssets.getResourceValue(id, 0, outValue, resolveRefs); 1251 if (found) { 1252 return; 1253 } 1254 throw new NotFoundException("Resource ID #0x" 1255 + Integer.toHexString(id)); 1256 } 1257 1258 /** 1259 * Get the raw value associated with a resource with associated density. 1260 * 1261 * @param id resource identifier 1262 * @param density density in DPI 1263 * @param resolveRefs If true, a resource that is a reference to another 1264 * resource will be followed so that you receive the actual final 1265 * resource data. If false, the TypedValue will be filled in with 1266 * the reference itself. 1267 * @throws NotFoundException Throws NotFoundException if the given ID does 1268 * not exist. 1269 * @see #getValue(String, TypedValue, boolean) 1270 */ 1271 public void getValueForDensity(int id, int density, TypedValue outValue, boolean resolveRefs) 1272 throws NotFoundException { 1273 boolean found = mAssets.getResourceValue(id, density, outValue, resolveRefs); 1274 if (found) { 1275 return; 1276 } 1277 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id)); 1278 } 1279 1280 /** 1281 * Return the raw data associated with a particular resource ID. 1282 * See getIdentifier() for information on how names are mapped to resource 1283 * IDs, and getString(int) for information on how string resources are 1284 * retrieved. 1285 * 1286 * <p>Note: use of this function is discouraged. It is much more 1287 * efficient to retrieve resources by identifier than by name. 1288 * 1289 * @param name The name of the desired resource. This is passed to 1290 * getIdentifier() with a default type of "string". 1291 * @param outValue Object in which to place the resource data. 1292 * @param resolveRefs If true, a resource that is a reference to another 1293 * resource will be followed so that you receive the 1294 * actual final resource data. If false, the TypedValue 1295 * will be filled in with the reference itself. 1296 * 1297 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1298 * 1299 */ 1300 public void getValue(String name, TypedValue outValue, boolean resolveRefs) 1301 throws NotFoundException { 1302 int id = getIdentifier(name, "string", null); 1303 if (id != 0) { 1304 getValue(id, outValue, resolveRefs); 1305 return; 1306 } 1307 throw new NotFoundException("String resource name " + name); 1308 } 1309 1310 /** 1311 * This class holds the current attribute values for a particular theme. 1312 * In other words, a Theme is a set of values for resource attributes; 1313 * these are used in conjunction with {@link TypedArray} 1314 * to resolve the final value for an attribute. 1315 * 1316 * <p>The Theme's attributes come into play in two ways: (1) a styled 1317 * attribute can explicit reference a value in the theme through the 1318 * "?themeAttribute" syntax; (2) if no value has been defined for a 1319 * particular styled attribute, as a last resort we will try to find that 1320 * attribute's value in the Theme. 1321 * 1322 * <p>You will normally use the {@link #obtainStyledAttributes} APIs to 1323 * retrieve XML attributes with style and theme information applied. 1324 */ 1325 public final class Theme { 1326 /** 1327 * Place new attribute values into the theme. The style resource 1328 * specified by <var>resid</var> will be retrieved from this Theme's 1329 * resources, its values placed into the Theme object. 1330 * 1331 * <p>The semantics of this function depends on the <var>force</var> 1332 * argument: If false, only values that are not already defined in 1333 * the theme will be copied from the system resource; otherwise, if 1334 * any of the style's attributes are already defined in the theme, the 1335 * current values in the theme will be overwritten. 1336 * 1337 * @param resId The resource ID of a style resource from which to 1338 * obtain attribute values. 1339 * @param force If true, values in the style resource will always be 1340 * used in the theme; otherwise, they will only be used 1341 * if not already defined in the theme. 1342 */ 1343 public void applyStyle(int resId, boolean force) { 1344 AssetManager.applyThemeStyle(mTheme, resId, force); 1345 1346 mThemeResId = resId; 1347 mKey += Integer.toHexString(resId) + (force ? "! " : " "); 1348 } 1349 1350 /** 1351 * Set this theme to hold the same contents as the theme 1352 * <var>other</var>. If both of these themes are from the same 1353 * Resources object, they will be identical after this function 1354 * returns. If they are from different Resources, only the resources 1355 * they have in common will be set in this theme. 1356 * 1357 * @param other The existing Theme to copy from. 1358 */ 1359 public void setTo(Theme other) { 1360 AssetManager.copyTheme(mTheme, other.mTheme); 1361 1362 mThemeResId = other.mThemeResId; 1363 mKey = other.mKey; 1364 } 1365 1366 /** 1367 * Return a TypedArray holding the values defined by 1368 * <var>Theme</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 attrs The desired attributes. 1374 * 1375 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1376 * 1377 * @return Returns a TypedArray holding an array of the attribute values. 1378 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1379 * when done with it. 1380 * 1381 * @see Resources#obtainAttributes 1382 * @see #obtainStyledAttributes(int, int[]) 1383 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1384 */ 1385 public TypedArray obtainStyledAttributes(int[] attrs) { 1386 final int len = attrs.length; 1387 final TypedArray array = TypedArray.obtain(Resources.this, len); 1388 array.mTheme = this; 1389 AssetManager.applyStyle(mTheme, 0, 0, 0, attrs, array.mData, array.mIndices); 1390 return array; 1391 } 1392 1393 /** 1394 * Return a TypedArray holding the values defined by the style 1395 * resource <var>resid</var> which are listed in <var>attrs</var>. 1396 * 1397 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1398 * with the array. 1399 * 1400 * @param resid The desired style resource. 1401 * @param attrs The desired attributes in the style. 1402 * 1403 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1404 * 1405 * @return Returns a TypedArray holding an array of the attribute values. 1406 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1407 * when done with it. 1408 * 1409 * @see Resources#obtainAttributes 1410 * @see #obtainStyledAttributes(int[]) 1411 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1412 */ 1413 public TypedArray obtainStyledAttributes(int resid, int[] attrs) throws NotFoundException { 1414 final int len = attrs.length; 1415 final TypedArray array = TypedArray.obtain(Resources.this, len); 1416 array.mTheme = this; 1417 if (false) { 1418 int[] data = array.mData; 1419 1420 System.out.println("**********************************************************"); 1421 System.out.println("**********************************************************"); 1422 System.out.println("**********************************************************"); 1423 System.out.println("Attributes:"); 1424 String s = " Attrs:"; 1425 int i; 1426 for (i=0; i<attrs.length; i++) { 1427 s = s + " 0x" + Integer.toHexString(attrs[i]); 1428 } 1429 System.out.println(s); 1430 s = " Found:"; 1431 TypedValue value = new TypedValue(); 1432 for (i=0; i<attrs.length; i++) { 1433 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1434 value.type = data[d+AssetManager.STYLE_TYPE]; 1435 value.data = data[d+AssetManager.STYLE_DATA]; 1436 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1437 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1438 s = s + " 0x" + Integer.toHexString(attrs[i]) 1439 + "=" + value; 1440 } 1441 System.out.println(s); 1442 } 1443 AssetManager.applyStyle(mTheme, 0, resid, 0, attrs, array.mData, array.mIndices); 1444 return array; 1445 } 1446 1447 /** 1448 * Return a TypedArray holding the attribute values in 1449 * <var>set</var> 1450 * that are listed in <var>attrs</var>. In addition, if the given 1451 * AttributeSet specifies a style class (through the "style" attribute), 1452 * that style will be applied on top of the base attributes it defines. 1453 * 1454 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1455 * with the array. 1456 * 1457 * <p>When determining the final value of a particular attribute, there 1458 * are four inputs that come into play:</p> 1459 * 1460 * <ol> 1461 * <li> Any attribute values in the given AttributeSet. 1462 * <li> The style resource specified in the AttributeSet (named 1463 * "style"). 1464 * <li> The default style specified by <var>defStyleAttr</var> and 1465 * <var>defStyleRes</var> 1466 * <li> The base values in this theme. 1467 * </ol> 1468 * 1469 * <p>Each of these inputs is considered in-order, with the first listed 1470 * taking precedence over the following ones. In other words, if in the 1471 * AttributeSet you have supplied <code><Button 1472 * textColor="#ff000000"></code>, then the button's text will 1473 * <em>always</em> be black, regardless of what is specified in any of 1474 * the styles. 1475 * 1476 * @param set The base set of attribute values. May be null. 1477 * @param attrs The desired attributes to be retrieved. 1478 * @param defStyleAttr An attribute in the current theme that contains a 1479 * reference to a style resource that supplies 1480 * defaults values for the TypedArray. Can be 1481 * 0 to not look for defaults. 1482 * @param defStyleRes A resource identifier of a style resource that 1483 * supplies default values for the TypedArray, 1484 * used only if defStyleAttr is 0 or can not be found 1485 * in the theme. Can be 0 to not look for defaults. 1486 * 1487 * @return Returns a TypedArray holding an array of the attribute values. 1488 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1489 * when done with it. 1490 * 1491 * @see Resources#obtainAttributes 1492 * @see #obtainStyledAttributes(int[]) 1493 * @see #obtainStyledAttributes(int, int[]) 1494 */ 1495 public TypedArray obtainStyledAttributes(AttributeSet set, 1496 int[] attrs, int defStyleAttr, int defStyleRes) { 1497 final int len = attrs.length; 1498 final TypedArray array = TypedArray.obtain(Resources.this, len); 1499 1500 // XXX note that for now we only work with compiled XML files. 1501 // To support generic XML files we will need to manually parse 1502 // out the attributes from the XML file (applying type information 1503 // contained in the resources and such). 1504 final XmlBlock.Parser parser = (XmlBlock.Parser)set; 1505 AssetManager.applyStyle(mTheme, defStyleAttr, defStyleRes, 1506 parser != null ? parser.mParseState : 0, attrs, array.mData, array.mIndices); 1507 1508 array.mTheme = this; 1509 array.mXml = parser; 1510 1511 if (false) { 1512 int[] data = array.mData; 1513 1514 System.out.println("Attributes:"); 1515 String s = " Attrs:"; 1516 int i; 1517 for (i=0; i<set.getAttributeCount(); i++) { 1518 s = s + " " + set.getAttributeName(i); 1519 int id = set.getAttributeNameResource(i); 1520 if (id != 0) { 1521 s = s + "(0x" + Integer.toHexString(id) + ")"; 1522 } 1523 s = s + "=" + set.getAttributeValue(i); 1524 } 1525 System.out.println(s); 1526 s = " Found:"; 1527 TypedValue value = new TypedValue(); 1528 for (i=0; i<attrs.length; i++) { 1529 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1530 value.type = data[d+AssetManager.STYLE_TYPE]; 1531 value.data = data[d+AssetManager.STYLE_DATA]; 1532 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1533 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1534 s = s + " 0x" + Integer.toHexString(attrs[i]) 1535 + "=" + value; 1536 } 1537 System.out.println(s); 1538 } 1539 1540 return array; 1541 } 1542 1543 /** 1544 * Retrieve the values for a set of attributes in the Theme. The 1545 * contents of the typed array are ultimately filled in by 1546 * {@link Resources#getValue}. 1547 * 1548 * @param values The base set of attribute values, must be equal in 1549 * length to {@code attrs}. All values must be of type 1550 * {@link TypedValue#TYPE_ATTRIBUTE}. 1551 * @param attrs The desired attributes to be retrieved. 1552 * @return Returns a TypedArray holding an array of the attribute 1553 * values. Be sure to call {@link TypedArray#recycle()} 1554 * when done with it. 1555 * @hide 1556 */ 1557 @NonNull 1558 public TypedArray resolveAttributes(@NonNull int[] values, @NonNull int[] attrs) { 1559 final int len = attrs.length; 1560 if (values == null || len != values.length) { 1561 throw new IllegalArgumentException( 1562 "Base attribute values must the same length as attrs"); 1563 } 1564 1565 final TypedArray array = TypedArray.obtain(Resources.this, len); 1566 AssetManager.resolveAttrs(mTheme, 0, 0, values, attrs, array.mData, array.mIndices); 1567 array.mTheme = this; 1568 array.mXml = null; 1569 1570 return array; 1571 } 1572 1573 /** 1574 * Retrieve the value of an attribute in the Theme. The contents of 1575 * <var>outValue</var> are ultimately filled in by 1576 * {@link Resources#getValue}. 1577 * 1578 * @param resid The resource identifier of the desired theme 1579 * attribute. 1580 * @param outValue Filled in with the ultimate resource value supplied 1581 * by the attribute. 1582 * @param resolveRefs If true, resource references will be walked; if 1583 * false, <var>outValue</var> may be a 1584 * TYPE_REFERENCE. In either case, it will never 1585 * be a TYPE_ATTRIBUTE. 1586 * 1587 * @return boolean Returns true if the attribute was found and 1588 * <var>outValue</var> is valid, else false. 1589 */ 1590 public boolean resolveAttribute(int resid, TypedValue outValue, boolean resolveRefs) { 1591 boolean got = mAssets.getThemeValue(mTheme, resid, outValue, resolveRefs); 1592 if (false) { 1593 System.out.println( 1594 "resolveAttribute #" + Integer.toHexString(resid) 1595 + " got=" + got + ", type=0x" + Integer.toHexString(outValue.type) 1596 + ", data=0x" + Integer.toHexString(outValue.data)); 1597 } 1598 return got; 1599 } 1600 1601 /** 1602 * Gets all of the attribute ids associated with this {@link Theme}. For debugging only. 1603 * 1604 * @return The int array containing attribute ids associated with this {@link Theme}. 1605 * @hide 1606 */ 1607 public int[] getAllAttributes() { 1608 return mAssets.getStyleAttributes(getAppliedStyleResId()); 1609 } 1610 1611 /** 1612 * Returns the resources to which this theme belongs. 1613 * 1614 * @return Resources to which this theme belongs. 1615 */ 1616 public Resources getResources() { 1617 return Resources.this; 1618 } 1619 1620 /** 1621 * Return a drawable object associated with a particular resource ID 1622 * and styled for the Theme. 1623 * 1624 * @param id The desired resource identifier, as generated by the aapt 1625 * tool. This integer encodes the package, type, and resource 1626 * entry. The value 0 is an invalid identifier. 1627 * @return Drawable An object that can be used to draw this resource. 1628 * @throws NotFoundException Throws NotFoundException if the given ID 1629 * does not exist. 1630 */ 1631 public Drawable getDrawable(int id) throws NotFoundException { 1632 return Resources.this.getDrawable(id, this); 1633 } 1634 1635 /** 1636 * Print contents of this theme out to the log. For debugging only. 1637 * 1638 * @param priority The log priority to use. 1639 * @param tag The log tag to use. 1640 * @param prefix Text to prefix each line printed. 1641 */ 1642 public void dump(int priority, String tag, String prefix) { 1643 AssetManager.dumpTheme(mTheme, priority, tag, prefix); 1644 } 1645 1646 @Override 1647 protected void finalize() throws Throwable { 1648 super.finalize(); 1649 mAssets.releaseTheme(mTheme); 1650 } 1651 1652 /*package*/ Theme() { 1653 mAssets = Resources.this.mAssets; 1654 mTheme = mAssets.createTheme(); 1655 } 1656 1657 @SuppressWarnings("hiding") 1658 private final AssetManager mAssets; 1659 private final long mTheme; 1660 1661 /** Resource identifier for the theme. */ 1662 private int mThemeResId = 0; 1663 1664 /** Unique key for the series of styles applied to this theme. */ 1665 private String mKey = ""; 1666 1667 // Needed by layoutlib. 1668 /*package*/ long getNativeTheme() { 1669 return mTheme; 1670 } 1671 1672 /*package*/ int getAppliedStyleResId() { 1673 return mThemeResId; 1674 } 1675 1676 /*package*/ String getKey() { 1677 return mKey; 1678 } 1679 1680 private String getResourceNameFromHexString(String hexString) { 1681 return getResourceName(Integer.parseInt(hexString, 16)); 1682 } 1683 1684 /** 1685 * Parses {@link #mKey} and returns a String array that holds pairs of adjacent Theme data: 1686 * resource name followed by whether or not it was forced, as specified by 1687 * {@link #applyStyle(int, boolean)}. 1688 * 1689 * @hide 1690 */ 1691 @ViewDebug.ExportedProperty(category = "theme", hasAdjacentMapping = true) 1692 public String[] getTheme() { 1693 String[] themeData = mKey.split(" "); 1694 String[] themes = new String[themeData.length * 2]; 1695 String theme; 1696 boolean forced; 1697 1698 for (int i = 0, j = themeData.length - 1; i < themes.length; i += 2, --j) { 1699 theme = themeData[j]; 1700 forced = theme.endsWith("!"); 1701 themes[i] = forced ? 1702 getResourceNameFromHexString(theme.substring(0, theme.length() - 1)) : 1703 getResourceNameFromHexString(theme); 1704 themes[i + 1] = forced ? "forced" : "not forced"; 1705 } 1706 return themes; 1707 } 1708 } 1709 1710 /** 1711 * Generate a new Theme object for this set of Resources. It initially 1712 * starts out empty. 1713 * 1714 * @return Theme The newly created Theme container. 1715 */ 1716 public final Theme newTheme() { 1717 return new Theme(); 1718 } 1719 1720 /** 1721 * Retrieve a set of basic attribute values from an AttributeSet, not 1722 * performing styling of them using a theme and/or style resources. 1723 * 1724 * @param set The current attribute values to retrieve. 1725 * @param attrs The specific attributes to be retrieved. 1726 * @return Returns a TypedArray holding an array of the attribute values. 1727 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1728 * when done with it. 1729 * 1730 * @see Theme#obtainStyledAttributes(AttributeSet, int[], int, int) 1731 */ 1732 public TypedArray obtainAttributes(AttributeSet set, int[] attrs) { 1733 int len = attrs.length; 1734 TypedArray array = TypedArray.obtain(this, len); 1735 1736 // XXX note that for now we only work with compiled XML files. 1737 // To support generic XML files we will need to manually parse 1738 // out the attributes from the XML file (applying type information 1739 // contained in the resources and such). 1740 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1741 mAssets.retrieveAttributes(parser.mParseState, attrs, 1742 array.mData, array.mIndices); 1743 1744 array.mXml = parser; 1745 1746 return array; 1747 } 1748 1749 /** 1750 * Store the newly updated configuration. 1751 */ 1752 public void updateConfiguration(Configuration config, 1753 DisplayMetrics metrics) { 1754 updateConfiguration(config, metrics, null); 1755 } 1756 1757 /** 1758 * @hide 1759 */ 1760 public void updateConfiguration(Configuration config, 1761 DisplayMetrics metrics, CompatibilityInfo compat) { 1762 synchronized (mAccessLock) { 1763 if (false) { 1764 Slog.i(TAG, "**** Updating config of " + this + ": old config is " 1765 + mConfiguration + " old compat is " + mCompatibilityInfo); 1766 Slog.i(TAG, "**** Updating config of " + this + ": new config is " 1767 + config + " new compat is " + compat); 1768 } 1769 if (compat != null) { 1770 mCompatibilityInfo = compat; 1771 } 1772 if (metrics != null) { 1773 mMetrics.setTo(metrics); 1774 } 1775 // NOTE: We should re-arrange this code to create a Display 1776 // with the CompatibilityInfo that is used everywhere we deal 1777 // with the display in relation to this app, rather than 1778 // doing the conversion here. This impl should be okay because 1779 // we make sure to return a compatible display in the places 1780 // where there are public APIs to retrieve the display... but 1781 // it would be cleaner and more maintainble to just be 1782 // consistently dealing with a compatible display everywhere in 1783 // the framework. 1784 mCompatibilityInfo.applyToDisplayMetrics(mMetrics); 1785 1786 int configChanges = calcConfigChanges(config); 1787 if (mConfiguration.locale == null) { 1788 mConfiguration.locale = Locale.getDefault(); 1789 mConfiguration.setLayoutDirection(mConfiguration.locale); 1790 } 1791 if (mConfiguration.densityDpi != Configuration.DENSITY_DPI_UNDEFINED) { 1792 mMetrics.densityDpi = mConfiguration.densityDpi; 1793 mMetrics.density = mConfiguration.densityDpi * DisplayMetrics.DENSITY_DEFAULT_SCALE; 1794 } 1795 mMetrics.scaledDensity = mMetrics.density * mConfiguration.fontScale; 1796 1797 String locale = null; 1798 if (mConfiguration.locale != null) { 1799 locale = adjustLanguageTag(mConfiguration.locale.toLanguageTag()); 1800 } 1801 int width, height; 1802 if (mMetrics.widthPixels >= mMetrics.heightPixels) { 1803 width = mMetrics.widthPixels; 1804 height = mMetrics.heightPixels; 1805 } else { 1806 //noinspection SuspiciousNameCombination 1807 width = mMetrics.heightPixels; 1808 //noinspection SuspiciousNameCombination 1809 height = mMetrics.widthPixels; 1810 } 1811 int keyboardHidden = mConfiguration.keyboardHidden; 1812 if (keyboardHidden == Configuration.KEYBOARDHIDDEN_NO 1813 && mConfiguration.hardKeyboardHidden 1814 == Configuration.HARDKEYBOARDHIDDEN_YES) { 1815 keyboardHidden = Configuration.KEYBOARDHIDDEN_SOFT; 1816 } 1817 mAssets.setConfiguration(mConfiguration.mcc, mConfiguration.mnc, 1818 locale, mConfiguration.orientation, 1819 mConfiguration.touchscreen, 1820 mConfiguration.densityDpi, mConfiguration.keyboard, 1821 keyboardHidden, mConfiguration.navigation, width, height, 1822 mConfiguration.smallestScreenWidthDp, 1823 mConfiguration.screenWidthDp, mConfiguration.screenHeightDp, 1824 mConfiguration.screenLayout, mConfiguration.uiMode, 1825 Build.VERSION.RESOURCES_SDK_INT); 1826 1827 if (DEBUG_CONFIG) { 1828 Slog.i(TAG, "**** Updating config of " + this + ": final config is " + mConfiguration 1829 + " final compat is " + mCompatibilityInfo); 1830 } 1831 1832 clearDrawableCachesLocked(mDrawableCache, configChanges); 1833 clearDrawableCachesLocked(mColorDrawableCache, configChanges); 1834 mAnimatorCache.onConfigurationChange(configChanges); 1835 mStateListAnimatorCache.onConfigurationChange(configChanges); 1836 1837 mColorStateListCache.clear(); 1838 1839 flushLayoutCache(); 1840 } 1841 synchronized (sSync) { 1842 if (mPluralRule != null) { 1843 mPluralRule = PluralRules.forLocale(config.locale); 1844 } 1845 } 1846 } 1847 1848 /** 1849 * Called by ConfigurationBoundResourceCacheTest via reflection. 1850 */ 1851 private int calcConfigChanges(Configuration config) { 1852 int configChanges = 0xfffffff; 1853 if (config != null) { 1854 mTmpConfig.setTo(config); 1855 int density = config.densityDpi; 1856 if (density == Configuration.DENSITY_DPI_UNDEFINED) { 1857 density = mMetrics.noncompatDensityDpi; 1858 } 1859 1860 mCompatibilityInfo.applyToConfiguration(density, mTmpConfig); 1861 1862 if (mTmpConfig.locale == null) { 1863 mTmpConfig.locale = Locale.getDefault(); 1864 mTmpConfig.setLayoutDirection(mTmpConfig.locale); 1865 } 1866 configChanges = mConfiguration.updateFrom(mTmpConfig); 1867 configChanges = ActivityInfo.activityInfoConfigToNative(configChanges); 1868 } 1869 return configChanges; 1870 } 1871 1872 private void clearDrawableCachesLocked( 1873 ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches, 1874 int configChanges) { 1875 final int N = caches.size(); 1876 for (int i = 0; i < N; i++) { 1877 clearDrawableCacheLocked(caches.valueAt(i), configChanges); 1878 } 1879 } 1880 1881 private void clearDrawableCacheLocked( 1882 LongSparseArray<WeakReference<ConstantState>> cache, int configChanges) { 1883 if (DEBUG_CONFIG) { 1884 Log.d(TAG, "Cleaning up drawables config changes: 0x" 1885 + Integer.toHexString(configChanges)); 1886 } 1887 final int N = cache.size(); 1888 for (int i = 0; i < N; i++) { 1889 final WeakReference<ConstantState> ref = cache.valueAt(i); 1890 if (ref != null) { 1891 final ConstantState cs = ref.get(); 1892 if (cs != null) { 1893 if (Configuration.needNewResources( 1894 configChanges, cs.getChangingConfigurations())) { 1895 if (DEBUG_CONFIG) { 1896 Log.d(TAG, "FLUSHING #0x" 1897 + Long.toHexString(cache.keyAt(i)) 1898 + " / " + cs + " with changes: 0x" 1899 + Integer.toHexString(cs.getChangingConfigurations())); 1900 } 1901 cache.setValueAt(i, null); 1902 } else if (DEBUG_CONFIG) { 1903 Log.d(TAG, "(Keeping #0x" 1904 + Long.toHexString(cache.keyAt(i)) 1905 + " / " + cs + " with changes: 0x" 1906 + Integer.toHexString(cs.getChangingConfigurations()) 1907 + ")"); 1908 } 1909 } 1910 } 1911 } 1912 } 1913 1914 /** 1915 * {@code Locale.toLanguageTag} will transform the obsolete (and deprecated) 1916 * language codes "in", "ji" and "iw" to "id", "yi" and "he" respectively. 1917 * 1918 * All released versions of android prior to "L" used the deprecated language 1919 * tags, so we will need to support them for backwards compatibility. 1920 * 1921 * Note that this conversion needs to take place *after* the call to 1922 * {@code toLanguageTag} because that will convert all the deprecated codes to 1923 * the new ones, even if they're set manually. 1924 */ 1925 private static String adjustLanguageTag(String languageTag) { 1926 final int separator = languageTag.indexOf('-'); 1927 final String language; 1928 final String remainder; 1929 1930 if (separator == -1) { 1931 language = languageTag; 1932 remainder = ""; 1933 } else { 1934 language = languageTag.substring(0, separator); 1935 remainder = languageTag.substring(separator); 1936 } 1937 1938 return Locale.adjustLanguageCode(language) + remainder; 1939 } 1940 1941 /** 1942 * Update the system resources configuration if they have previously 1943 * been initialized. 1944 * 1945 * @hide 1946 */ 1947 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics, 1948 CompatibilityInfo compat) { 1949 if (mSystem != null) { 1950 mSystem.updateConfiguration(config, metrics, compat); 1951 //Log.i(TAG, "Updated system resources " + mSystem 1952 // + ": " + mSystem.getConfiguration()); 1953 } 1954 } 1955 1956 /** 1957 * Return the current display metrics that are in effect for this resource 1958 * object. The returned object should be treated as read-only. 1959 * 1960 * @return The resource's current display metrics. 1961 */ 1962 public DisplayMetrics getDisplayMetrics() { 1963 if (DEBUG_CONFIG) Slog.v(TAG, "Returning DisplayMetrics: " + mMetrics.widthPixels 1964 + "x" + mMetrics.heightPixels + " " + mMetrics.density); 1965 return mMetrics; 1966 } 1967 1968 /** 1969 * Return the current configuration that is in effect for this resource 1970 * object. The returned object should be treated as read-only. 1971 * 1972 * @return The resource's current configuration. 1973 */ 1974 public Configuration getConfiguration() { 1975 return mConfiguration; 1976 } 1977 1978 /** 1979 * Return the compatibility mode information for the application. 1980 * The returned object should be treated as read-only. 1981 * 1982 * @return compatibility info. 1983 * @hide 1984 */ 1985 public CompatibilityInfo getCompatibilityInfo() { 1986 return mCompatibilityInfo; 1987 } 1988 1989 /** 1990 * This is just for testing. 1991 * @hide 1992 */ 1993 public void setCompatibilityInfo(CompatibilityInfo ci) { 1994 if (ci != null) { 1995 mCompatibilityInfo = ci; 1996 updateConfiguration(mConfiguration, mMetrics); 1997 } 1998 } 1999 2000 /** 2001 * Return a resource identifier for the given resource name. A fully 2002 * qualified resource name is of the form "package:type/entry". The first 2003 * two components (package and type) are optional if defType and 2004 * defPackage, respectively, are specified here. 2005 * 2006 * <p>Note: use of this function is discouraged. It is much more 2007 * efficient to retrieve resources by identifier than by name. 2008 * 2009 * @param name The name of the desired resource. 2010 * @param defType Optional default resource type to find, if "type/" is 2011 * not included in the name. Can be null to require an 2012 * explicit type. 2013 * @param defPackage Optional default package to find, if "package:" is 2014 * not included in the name. Can be null to require an 2015 * explicit package. 2016 * 2017 * @return int The associated resource identifier. Returns 0 if no such 2018 * resource was found. (0 is not a valid resource ID.) 2019 */ 2020 public int getIdentifier(String name, String defType, String defPackage) { 2021 if (name == null) { 2022 throw new NullPointerException("name is null"); 2023 } 2024 try { 2025 return Integer.parseInt(name); 2026 } catch (Exception e) { 2027 // Ignore 2028 } 2029 return mAssets.getResourceIdentifier(name, defType, defPackage); 2030 } 2031 2032 /** 2033 * Return true if given resource identifier includes a package. 2034 * 2035 * @hide 2036 */ 2037 public static boolean resourceHasPackage(int resid) { 2038 return (resid >>> 24) != 0; 2039 } 2040 2041 /** 2042 * Return the full name for a given resource identifier. This name is 2043 * a single string of the form "package:type/entry". 2044 * 2045 * @param resid The resource identifier whose name is to be retrieved. 2046 * 2047 * @return A string holding the name of the resource. 2048 * 2049 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2050 * 2051 * @see #getResourcePackageName 2052 * @see #getResourceTypeName 2053 * @see #getResourceEntryName 2054 */ 2055 public String getResourceName(int resid) throws NotFoundException { 2056 String str = mAssets.getResourceName(resid); 2057 if (str != null) return str; 2058 throw new NotFoundException("Unable to find resource ID #0x" 2059 + Integer.toHexString(resid)); 2060 } 2061 2062 /** 2063 * Return the package name for a given resource identifier. 2064 * 2065 * @param resid The resource identifier whose package name is to be 2066 * retrieved. 2067 * 2068 * @return A string holding the package name of the resource. 2069 * 2070 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2071 * 2072 * @see #getResourceName 2073 */ 2074 public String getResourcePackageName(int resid) throws NotFoundException { 2075 String str = mAssets.getResourcePackageName(resid); 2076 if (str != null) return str; 2077 throw new NotFoundException("Unable to find resource ID #0x" 2078 + Integer.toHexString(resid)); 2079 } 2080 2081 /** 2082 * Return the type name for a given resource identifier. 2083 * 2084 * @param resid The resource identifier whose type name is to be 2085 * retrieved. 2086 * 2087 * @return A string holding the type name of the resource. 2088 * 2089 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2090 * 2091 * @see #getResourceName 2092 */ 2093 public String getResourceTypeName(int resid) throws NotFoundException { 2094 String str = mAssets.getResourceTypeName(resid); 2095 if (str != null) return str; 2096 throw new NotFoundException("Unable to find resource ID #0x" 2097 + Integer.toHexString(resid)); 2098 } 2099 2100 /** 2101 * Return the entry name for a given resource identifier. 2102 * 2103 * @param resid The resource identifier whose entry name is to be 2104 * retrieved. 2105 * 2106 * @return A string holding the entry name of the resource. 2107 * 2108 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 2109 * 2110 * @see #getResourceName 2111 */ 2112 public String getResourceEntryName(int resid) throws NotFoundException { 2113 String str = mAssets.getResourceEntryName(resid); 2114 if (str != null) return str; 2115 throw new NotFoundException("Unable to find resource ID #0x" 2116 + Integer.toHexString(resid)); 2117 } 2118 2119 /** 2120 * Parse a series of {@link android.R.styleable#Extra <extra>} tags from 2121 * an XML file. You call this when you are at the parent tag of the 2122 * extra tags, and it will return once all of the child tags have been parsed. 2123 * This will call {@link #parseBundleExtra} for each extra tag encountered. 2124 * 2125 * @param parser The parser from which to retrieve the extras. 2126 * @param outBundle A Bundle in which to place all parsed extras. 2127 * @throws XmlPullParserException 2128 * @throws IOException 2129 */ 2130 public void parseBundleExtras(XmlResourceParser parser, Bundle outBundle) 2131 throws XmlPullParserException, IOException { 2132 int outerDepth = parser.getDepth(); 2133 int type; 2134 while ((type=parser.next()) != XmlPullParser.END_DOCUMENT 2135 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 2136 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 2137 continue; 2138 } 2139 2140 String nodeName = parser.getName(); 2141 if (nodeName.equals("extra")) { 2142 parseBundleExtra("extra", parser, outBundle); 2143 XmlUtils.skipCurrentTag(parser); 2144 2145 } else { 2146 XmlUtils.skipCurrentTag(parser); 2147 } 2148 } 2149 } 2150 2151 /** 2152 * Parse a name/value pair out of an XML tag holding that data. The 2153 * AttributeSet must be holding the data defined by 2154 * {@link android.R.styleable#Extra}. The following value types are supported: 2155 * <ul> 2156 * <li> {@link TypedValue#TYPE_STRING}: 2157 * {@link Bundle#putCharSequence Bundle.putCharSequence()} 2158 * <li> {@link TypedValue#TYPE_INT_BOOLEAN}: 2159 * {@link Bundle#putCharSequence Bundle.putBoolean()} 2160 * <li> {@link TypedValue#TYPE_FIRST_INT}-{@link TypedValue#TYPE_LAST_INT}: 2161 * {@link Bundle#putCharSequence Bundle.putBoolean()} 2162 * <li> {@link TypedValue#TYPE_FLOAT}: 2163 * {@link Bundle#putCharSequence Bundle.putFloat()} 2164 * </ul> 2165 * 2166 * @param tagName The name of the tag these attributes come from; this is 2167 * only used for reporting error messages. 2168 * @param attrs The attributes from which to retrieve the name/value pair. 2169 * @param outBundle The Bundle in which to place the parsed value. 2170 * @throws XmlPullParserException If the attributes are not valid. 2171 */ 2172 public void parseBundleExtra(String tagName, AttributeSet attrs, 2173 Bundle outBundle) throws XmlPullParserException { 2174 TypedArray sa = obtainAttributes(attrs, 2175 com.android.internal.R.styleable.Extra); 2176 2177 String name = sa.getString( 2178 com.android.internal.R.styleable.Extra_name); 2179 if (name == null) { 2180 sa.recycle(); 2181 throw new XmlPullParserException("<" + tagName 2182 + "> requires an android:name attribute at " 2183 + attrs.getPositionDescription()); 2184 } 2185 2186 TypedValue v = sa.peekValue( 2187 com.android.internal.R.styleable.Extra_value); 2188 if (v != null) { 2189 if (v.type == TypedValue.TYPE_STRING) { 2190 CharSequence cs = v.coerceToString(); 2191 outBundle.putCharSequence(name, cs); 2192 } else if (v.type == TypedValue.TYPE_INT_BOOLEAN) { 2193 outBundle.putBoolean(name, v.data != 0); 2194 } else if (v.type >= TypedValue.TYPE_FIRST_INT 2195 && v.type <= TypedValue.TYPE_LAST_INT) { 2196 outBundle.putInt(name, v.data); 2197 } else if (v.type == TypedValue.TYPE_FLOAT) { 2198 outBundle.putFloat(name, v.getFloat()); 2199 } else { 2200 sa.recycle(); 2201 throw new XmlPullParserException("<" + tagName 2202 + "> only supports string, integer, float, color, and boolean at " 2203 + attrs.getPositionDescription()); 2204 } 2205 } else { 2206 sa.recycle(); 2207 throw new XmlPullParserException("<" + tagName 2208 + "> requires an android:value or android:resource attribute at " 2209 + attrs.getPositionDescription()); 2210 } 2211 2212 sa.recycle(); 2213 } 2214 2215 /** 2216 * Retrieve underlying AssetManager storage for these resources. 2217 */ 2218 public final AssetManager getAssets() { 2219 return mAssets; 2220 } 2221 2222 /** 2223 * Call this to remove all cached loaded layout resources from the 2224 * Resources object. Only intended for use with performance testing 2225 * tools. 2226 */ 2227 public final void flushLayoutCache() { 2228 synchronized (mCachedXmlBlockIds) { 2229 // First see if this block is in our cache. 2230 final int num = mCachedXmlBlockIds.length; 2231 for (int i=0; i<num; i++) { 2232 mCachedXmlBlockIds[i] = -0; 2233 XmlBlock oldBlock = mCachedXmlBlocks[i]; 2234 if (oldBlock != null) { 2235 oldBlock.close(); 2236 } 2237 mCachedXmlBlocks[i] = null; 2238 } 2239 } 2240 } 2241 2242 /** 2243 * Start preloading of resource data using this Resources object. Only 2244 * for use by the zygote process for loading common system resources. 2245 * {@hide} 2246 */ 2247 public final void startPreloading() { 2248 synchronized (sSync) { 2249 if (sPreloaded) { 2250 throw new IllegalStateException("Resources already preloaded"); 2251 } 2252 sPreloaded = true; 2253 mPreloading = true; 2254 sPreloadedDensity = DisplayMetrics.DENSITY_DEVICE; 2255 mConfiguration.densityDpi = sPreloadedDensity; 2256 updateConfiguration(null, null); 2257 } 2258 } 2259 2260 /** 2261 * Called by zygote when it is done preloading resources, to change back 2262 * to normal Resources operation. 2263 */ 2264 public final void finishPreloading() { 2265 if (mPreloading) { 2266 mPreloading = false; 2267 flushLayoutCache(); 2268 } 2269 } 2270 2271 /** 2272 * @hide 2273 */ 2274 public LongSparseArray<ConstantState> getPreloadedDrawables() { 2275 return sPreloadedDrawables[0]; 2276 } 2277 2278 private boolean verifyPreloadConfig(int changingConfigurations, int allowVarying, 2279 int resourceId, String name) { 2280 // We allow preloading of resources even if they vary by font scale (which 2281 // doesn't impact resource selection) or density (which we handle specially by 2282 // simply turning off all preloading), as well as any other configs specified 2283 // by the caller. 2284 if (((changingConfigurations&~(ActivityInfo.CONFIG_FONT_SCALE | 2285 ActivityInfo.CONFIG_DENSITY)) & ~allowVarying) != 0) { 2286 String resName; 2287 try { 2288 resName = getResourceName(resourceId); 2289 } catch (NotFoundException e) { 2290 resName = "?"; 2291 } 2292 // This should never happen in production, so we should log a 2293 // warning even if we're not debugging. 2294 Log.w(TAG, "Preloaded " + name + " resource #0x" 2295 + Integer.toHexString(resourceId) 2296 + " (" + resName + ") that varies with configuration!!"); 2297 return false; 2298 } 2299 if (TRACE_FOR_PRELOAD) { 2300 String resName; 2301 try { 2302 resName = getResourceName(resourceId); 2303 } catch (NotFoundException e) { 2304 resName = "?"; 2305 } 2306 Log.w(TAG, "Preloading " + name + " resource #0x" 2307 + Integer.toHexString(resourceId) 2308 + " (" + resName + ")"); 2309 } 2310 return true; 2311 } 2312 2313 /*package*/ Drawable loadDrawable(TypedValue value, int id, Theme theme) throws NotFoundException { 2314 if (TRACE_FOR_PRELOAD) { 2315 // Log only framework resources 2316 if ((id >>> 24) == 0x1) { 2317 final String name = getResourceName(id); 2318 if (name != null) { 2319 Log.d("PreloadDrawable", name); 2320 } 2321 } 2322 } 2323 2324 final boolean isColorDrawable; 2325 final ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches; 2326 final long key; 2327 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT 2328 && value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2329 isColorDrawable = true; 2330 caches = mColorDrawableCache; 2331 key = value.data; 2332 } else { 2333 isColorDrawable = false; 2334 caches = mDrawableCache; 2335 key = (((long) value.assetCookie) << 32) | value.data; 2336 } 2337 2338 // First, check whether we have a cached version of this drawable 2339 // that was inflated against the specified theme. 2340 if (!mPreloading) { 2341 final Drawable cachedDrawable = getCachedDrawable(caches, key, theme); 2342 if (cachedDrawable != null) { 2343 return cachedDrawable; 2344 } 2345 } 2346 2347 // Next, check preloaded drawables. These are unthemed but may have 2348 // themeable attributes. 2349 final ConstantState cs; 2350 if (isColorDrawable) { 2351 cs = sPreloadedColorDrawables.get(key); 2352 } else { 2353 cs = sPreloadedDrawables[mConfiguration.getLayoutDirection()].get(key); 2354 } 2355 2356 final Drawable dr; 2357 if (cs != null) { 2358 final Drawable clonedDr = cs.newDrawable(this); 2359 if (theme != null) { 2360 dr = clonedDr.mutate(); 2361 dr.applyTheme(theme); 2362 dr.clearMutated(); 2363 } else { 2364 dr = clonedDr; 2365 } 2366 } else if (isColorDrawable) { 2367 dr = new ColorDrawable(value.data); 2368 } else { 2369 dr = loadDrawableForCookie(value, id, theme); 2370 } 2371 2372 // If we were able to obtain a drawable, store it in the appropriate 2373 // cache (either preload or themed). 2374 if (dr != null) { 2375 dr.setChangingConfigurations(value.changingConfigurations); 2376 cacheDrawable(value, theme, isColorDrawable, caches, key, dr); 2377 } 2378 2379 return dr; 2380 } 2381 2382 private void cacheDrawable(TypedValue value, Theme theme, boolean isColorDrawable, 2383 ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches, 2384 long key, Drawable dr) { 2385 final ConstantState cs = dr.getConstantState(); 2386 if (cs == null) { 2387 return; 2388 } 2389 2390 if (mPreloading) { 2391 // Preloaded drawables never have a theme, but may be themeable. 2392 final int changingConfigs = cs.getChangingConfigurations(); 2393 if (isColorDrawable) { 2394 if (verifyPreloadConfig(changingConfigs, 0, value.resourceId, "drawable")) { 2395 sPreloadedColorDrawables.put(key, cs); 2396 } 2397 } else { 2398 if (verifyPreloadConfig( 2399 changingConfigs, LAYOUT_DIR_CONFIG, value.resourceId, "drawable")) { 2400 if ((changingConfigs & LAYOUT_DIR_CONFIG) == 0) { 2401 // If this resource does not vary based on layout direction, 2402 // we can put it in all of the preload maps. 2403 sPreloadedDrawables[0].put(key, cs); 2404 sPreloadedDrawables[1].put(key, cs); 2405 } else { 2406 // Otherwise, only in the layout dir we loaded it for. 2407 sPreloadedDrawables[mConfiguration.getLayoutDirection()].put(key, cs); 2408 } 2409 } 2410 } 2411 } else { 2412 synchronized (mAccessLock) { 2413 final String themeKey = theme == null ? "" : theme.mKey; 2414 LongSparseArray<WeakReference<ConstantState>> themedCache = caches.get(themeKey); 2415 if (themedCache == null) { 2416 themedCache = new LongSparseArray<WeakReference<ConstantState>>(1); 2417 caches.put(themeKey, themedCache); 2418 } 2419 themedCache.put(key, new WeakReference<ConstantState>(cs)); 2420 } 2421 } 2422 } 2423 2424 /** 2425 * Loads a drawable from XML or resources stream. 2426 */ 2427 private Drawable loadDrawableForCookie(TypedValue value, int id, Theme theme) { 2428 if (value.string == null) { 2429 throw new NotFoundException("Resource \"" + getResourceName(id) + "\" (" 2430 + Integer.toHexString(id) + ") is not a Drawable (color or path): " + value); 2431 } 2432 2433 final String file = value.string.toString(); 2434 2435 if (TRACE_FOR_MISS_PRELOAD) { 2436 // Log only framework resources 2437 if ((id >>> 24) == 0x1) { 2438 final String name = getResourceName(id); 2439 if (name != null) { 2440 Log.d(TAG, "Loading framework drawable #" + Integer.toHexString(id) 2441 + ": " + name + " at " + file); 2442 } 2443 } 2444 } 2445 2446 if (DEBUG_LOAD) { 2447 Log.v(TAG, "Loading drawable for cookie " + value.assetCookie + ": " + file); 2448 } 2449 2450 final Drawable dr; 2451 2452 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 2453 try { 2454 if (file.endsWith(".xml")) { 2455 final XmlResourceParser rp = loadXmlResourceParser( 2456 file, id, value.assetCookie, "drawable"); 2457 dr = Drawable.createFromXml(this, rp, theme); 2458 rp.close(); 2459 } else { 2460 final InputStream is = mAssets.openNonAsset( 2461 value.assetCookie, file, AssetManager.ACCESS_STREAMING); 2462 dr = Drawable.createFromResourceStream(this, value, is, file, null); 2463 is.close(); 2464 } 2465 } catch (Exception e) { 2466 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2467 final NotFoundException rnf = new NotFoundException( 2468 "File " + file + " from drawable resource ID #0x" + Integer.toHexString(id)); 2469 rnf.initCause(e); 2470 throw rnf; 2471 } 2472 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2473 2474 return dr; 2475 } 2476 2477 private Drawable getCachedDrawable( 2478 ArrayMap<String, LongSparseArray<WeakReference<ConstantState>>> caches, 2479 long key, Theme theme) { 2480 synchronized (mAccessLock) { 2481 final String themeKey = theme != null ? theme.mKey : ""; 2482 final LongSparseArray<WeakReference<ConstantState>> themedCache = caches.get(themeKey); 2483 if (themedCache != null) { 2484 final Drawable themedDrawable = getCachedDrawableLocked(themedCache, key); 2485 if (themedDrawable != null) { 2486 return themedDrawable; 2487 } 2488 } 2489 2490 // No cached drawable, we'll need to create a new one. 2491 return null; 2492 } 2493 } 2494 2495 private ConstantState getConstantStateLocked( 2496 LongSparseArray<WeakReference<ConstantState>> drawableCache, long key) { 2497 final WeakReference<ConstantState> wr = drawableCache.get(key); 2498 if (wr != null) { // we have the key 2499 final ConstantState entry = wr.get(); 2500 if (entry != null) { 2501 //Log.i(TAG, "Returning cached drawable @ #" + 2502 // Integer.toHexString(((Integer)key).intValue()) 2503 // + " in " + this + ": " + entry); 2504 return entry; 2505 } else { // our entry has been purged 2506 drawableCache.delete(key); 2507 } 2508 } 2509 return null; 2510 } 2511 2512 private Drawable getCachedDrawableLocked( 2513 LongSparseArray<WeakReference<ConstantState>> drawableCache, long key) { 2514 final ConstantState entry = getConstantStateLocked(drawableCache, key); 2515 if (entry != null) { 2516 return entry.newDrawable(this); 2517 } 2518 return null; 2519 } 2520 2521 /*package*/ ColorStateList loadColorStateList(TypedValue value, int id) 2522 throws NotFoundException { 2523 if (TRACE_FOR_PRELOAD) { 2524 // Log only framework resources 2525 if ((id >>> 24) == 0x1) { 2526 final String name = getResourceName(id); 2527 if (name != null) android.util.Log.d("PreloadColorStateList", name); 2528 } 2529 } 2530 2531 final long key = (((long) value.assetCookie) << 32) | value.data; 2532 2533 ColorStateList csl; 2534 2535 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 2536 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2537 2538 csl = sPreloadedColorStateLists.get(key); 2539 if (csl != null) { 2540 return csl; 2541 } 2542 2543 csl = ColorStateList.valueOf(value.data); 2544 if (mPreloading) { 2545 if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId, 2546 "color")) { 2547 sPreloadedColorStateLists.put(key, csl); 2548 } 2549 } 2550 2551 return csl; 2552 } 2553 2554 csl = getCachedColorStateList(key); 2555 if (csl != null) { 2556 return csl; 2557 } 2558 2559 csl = sPreloadedColorStateLists.get(key); 2560 if (csl != null) { 2561 return csl; 2562 } 2563 2564 if (value.string == null) { 2565 throw new NotFoundException( 2566 "Resource is not a ColorStateList (color or path): " + value); 2567 } 2568 2569 final String file = value.string.toString(); 2570 2571 if (file.endsWith(".xml")) { 2572 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 2573 try { 2574 final XmlResourceParser rp = loadXmlResourceParser( 2575 file, id, value.assetCookie, "colorstatelist"); 2576 csl = ColorStateList.createFromXml(this, rp); 2577 rp.close(); 2578 } catch (Exception e) { 2579 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2580 NotFoundException rnf = new NotFoundException( 2581 "File " + file + " from color state list resource ID #0x" 2582 + Integer.toHexString(id)); 2583 rnf.initCause(e); 2584 throw rnf; 2585 } 2586 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 2587 } else { 2588 throw new NotFoundException( 2589 "File " + file + " from drawable resource ID #0x" 2590 + Integer.toHexString(id) + ": .xml extension required"); 2591 } 2592 2593 if (csl != null) { 2594 if (mPreloading) { 2595 if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId, 2596 "color")) { 2597 sPreloadedColorStateLists.put(key, csl); 2598 } 2599 } else { 2600 synchronized (mAccessLock) { 2601 //Log.i(TAG, "Saving cached color state list @ #" + 2602 // Integer.toHexString(key.intValue()) 2603 // + " in " + this + ": " + csl); 2604 mColorStateListCache.put(key, new WeakReference<ColorStateList>(csl)); 2605 } 2606 } 2607 } 2608 2609 return csl; 2610 } 2611 2612 private ColorStateList getCachedColorStateList(long key) { 2613 synchronized (mAccessLock) { 2614 WeakReference<ColorStateList> wr = mColorStateListCache.get(key); 2615 if (wr != null) { // we have the key 2616 ColorStateList entry = wr.get(); 2617 if (entry != null) { 2618 //Log.i(TAG, "Returning cached color state list @ #" + 2619 // Integer.toHexString(((Integer)key).intValue()) 2620 // + " in " + this + ": " + entry); 2621 return entry; 2622 } else { // our entry has been purged 2623 mColorStateListCache.delete(key); 2624 } 2625 } 2626 } 2627 return null; 2628 } 2629 2630 /*package*/ XmlResourceParser loadXmlResourceParser(int id, String type) 2631 throws NotFoundException { 2632 synchronized (mAccessLock) { 2633 TypedValue value = mTmpValue; 2634 if (value == null) { 2635 mTmpValue = value = new TypedValue(); 2636 } 2637 getValue(id, value, true); 2638 if (value.type == TypedValue.TYPE_STRING) { 2639 return loadXmlResourceParser(value.string.toString(), id, 2640 value.assetCookie, type); 2641 } 2642 throw new NotFoundException( 2643 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 2644 + Integer.toHexString(value.type) + " is not valid"); 2645 } 2646 } 2647 2648 /*package*/ XmlResourceParser loadXmlResourceParser(String file, int id, 2649 int assetCookie, String type) throws NotFoundException { 2650 if (id != 0) { 2651 try { 2652 // These may be compiled... 2653 synchronized (mCachedXmlBlockIds) { 2654 // First see if this block is in our cache. 2655 final int num = mCachedXmlBlockIds.length; 2656 for (int i=0; i<num; i++) { 2657 if (mCachedXmlBlockIds[i] == id) { 2658 //System.out.println("**** REUSING XML BLOCK! id=" 2659 // + id + ", index=" + i); 2660 return mCachedXmlBlocks[i].newParser(); 2661 } 2662 } 2663 2664 // Not in the cache, create a new block and put it at 2665 // the next slot in the cache. 2666 XmlBlock block = mAssets.openXmlBlockAsset( 2667 assetCookie, file); 2668 if (block != null) { 2669 int pos = mLastCachedXmlBlockIndex+1; 2670 if (pos >= num) pos = 0; 2671 mLastCachedXmlBlockIndex = pos; 2672 XmlBlock oldBlock = mCachedXmlBlocks[pos]; 2673 if (oldBlock != null) { 2674 oldBlock.close(); 2675 } 2676 mCachedXmlBlockIds[pos] = id; 2677 mCachedXmlBlocks[pos] = block; 2678 //System.out.println("**** CACHING NEW XML BLOCK! id=" 2679 // + id + ", index=" + pos); 2680 return block.newParser(); 2681 } 2682 } 2683 } catch (Exception e) { 2684 NotFoundException rnf = new NotFoundException( 2685 "File " + file + " from xml type " + type + " resource ID #0x" 2686 + Integer.toHexString(id)); 2687 rnf.initCause(e); 2688 throw rnf; 2689 } 2690 } 2691 2692 throw new NotFoundException( 2693 "File " + file + " from xml type " + type + " resource ID #0x" 2694 + Integer.toHexString(id)); 2695 } 2696 2697 /*package*/ void recycleCachedStyledAttributes(TypedArray attrs) { 2698 synchronized (mAccessLock) { 2699 final TypedArray cached = mCachedStyledAttributes; 2700 if (cached == null || cached.mData.length < attrs.mData.length) { 2701 mCachedStyledAttributes = attrs; 2702 } 2703 } 2704 } 2705 2706 private Resources() { 2707 mAssets = AssetManager.getSystem(); 2708 // NOTE: Intentionally leaving this uninitialized (all values set 2709 // to zero), so that anyone who tries to do something that requires 2710 // metrics will get a very wrong value. 2711 mConfiguration.setToDefaults(); 2712 mMetrics.setToDefaults(); 2713 updateConfiguration(null, null); 2714 mAssets.ensureStringBlocks(); 2715 } 2716} 2717