Resources.java revision 5fd2169eabd77e6bfafaf456e58051a3bafb2bca
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.content.res; 18 19import com.android.internal.util.XmlUtils; 20 21import org.xmlpull.v1.XmlPullParser; 22import org.xmlpull.v1.XmlPullParserException; 23 24import android.content.pm.ActivityInfo; 25import android.graphics.Movie; 26import android.graphics.drawable.Drawable; 27import android.graphics.drawable.ColorDrawable; 28import android.graphics.drawable.Drawable.ConstantState; 29import android.os.Build; 30import android.os.Bundle; 31import android.util.AttributeSet; 32import android.util.DisplayMetrics; 33import android.util.Log; 34import android.util.Slog; 35import android.util.SparseArray; 36import android.util.TypedValue; 37import android.util.LongSparseArray; 38 39import java.io.IOException; 40import java.io.InputStream; 41import java.lang.ref.WeakReference; 42import java.util.Locale; 43 44import libcore.icu.NativePluralRules; 45 46/** 47 * Class for accessing an application's resources. This sits on top of the 48 * asset manager of the application (accessible through {@link #getAssets}) and 49 * provides a high-level API for getting typed data from the assets. 50 * 51 * <p>The Android resource system keeps track of all non-code assets associated with an 52 * application. You can use this class to access your application's resources. You can generally 53 * acquire the {@link android.content.res.Resources} instance associated with your application 54 * with {@link android.content.Context#getResources getResources()}.</p> 55 * 56 * <p>The Android SDK tools compile your application's resources into the application binary 57 * at build time. To use a resource, you must install it correctly in the source tree (inside 58 * your project's {@code res/} directory) and build your application. As part of the build 59 * process, the SDK tools generate symbols for each resource, which you can use in your application 60 * code to access the resources.</p> 61 * 62 * <p>Using application resources makes it easy to update various characteristics of your 63 * application without modifying code, and—by providing sets of alternative 64 * resources—enables you to optimize your application for a variety of device configurations 65 * (such as for different languages and screen sizes). This is an important aspect of developing 66 * Android applications that are compatible on different types of devices.</p> 67 * 68 * <p>For more information about using resources, see the documentation about <a 69 * href="{@docRoot}guide/topics/resources/index.html">Application Resources</a>.</p> 70 */ 71public class Resources { 72 static final String TAG = "Resources"; 73 private static final boolean DEBUG_LOAD = false; 74 private static final boolean DEBUG_CONFIG = false; 75 private static final boolean TRACE_FOR_PRELOAD = false; 76 77 private static final int ID_OTHER = 0x01000004; 78 79 private static final Object mSync = new Object(); 80 private static Resources mSystem = null; 81 82 // Information about preloaded resources. Note that they are not 83 // protected by a lock, because while preloading in zygote we are all 84 // single-threaded, and after that these are immutable. 85 private static final LongSparseArray<Drawable.ConstantState> sPreloadedDrawables 86 = new LongSparseArray<Drawable.ConstantState>(); 87 private static final SparseArray<ColorStateList> mPreloadedColorStateLists 88 = new SparseArray<ColorStateList>(); 89 private static final LongSparseArray<Drawable.ConstantState> sPreloadedColorDrawables 90 = new LongSparseArray<Drawable.ConstantState>(); 91 private static boolean mPreloaded; 92 93 /*package*/ final TypedValue mTmpValue = new TypedValue(); 94 /*package*/ final Configuration mTmpConfig = new Configuration(); 95 96 // These are protected by the mTmpValue lock. 97 private final LongSparseArray<WeakReference<Drawable.ConstantState> > mDrawableCache 98 = new LongSparseArray<WeakReference<Drawable.ConstantState> >(); 99 private final SparseArray<WeakReference<ColorStateList> > mColorStateListCache 100 = new SparseArray<WeakReference<ColorStateList> >(); 101 private final LongSparseArray<WeakReference<Drawable.ConstantState> > mColorDrawableCache 102 = new LongSparseArray<WeakReference<Drawable.ConstantState> >(); 103 private boolean mPreloading; 104 105 /*package*/ TypedArray mCachedStyledAttributes = null; 106 107 private int mLastCachedXmlBlockIndex = -1; 108 private final int[] mCachedXmlBlockIds = { 0, 0, 0, 0 }; 109 private final XmlBlock[] mCachedXmlBlocks = new XmlBlock[4]; 110 111 /*package*/ final AssetManager mAssets; 112 private final Configuration mConfiguration = new Configuration(); 113 /*package*/ final DisplayMetrics mMetrics = new DisplayMetrics(); 114 private NativePluralRules mPluralRule; 115 116 private CompatibilityInfo mCompatibilityInfo; 117 118 private static final LongSparseArray<Object> EMPTY_ARRAY = new LongSparseArray<Object>(0) { 119 @Override 120 public void put(long k, Object o) { 121 throw new UnsupportedOperationException(); 122 } 123 @Override 124 public void append(long k, Object o) { 125 throw new UnsupportedOperationException(); 126 } 127 }; 128 129 @SuppressWarnings("unchecked") 130 private static <T> LongSparseArray<T> emptySparseArray() { 131 return (LongSparseArray<T>) EMPTY_ARRAY; 132 } 133 134 /** @hide */ 135 public static int selectDefaultTheme(int curTheme, int targetSdkVersion) { 136 return selectSystemTheme(curTheme, targetSdkVersion, 137 com.android.internal.R.style.Theme, com.android.internal.R.style.Theme_Holo); 138 } 139 140 /** @hide */ 141 public static int selectSystemTheme(int curTheme, int targetSdkVersion, int orig, int holo) { 142 if (curTheme != 0) { 143 return curTheme; 144 } 145 if (targetSdkVersion < Build.VERSION_CODES.HONEYCOMB) { 146 return orig; 147 } 148 return holo; 149 } 150 151 /** 152 * This exception is thrown by the resource APIs when a requested resource 153 * can not be found. 154 */ 155 public static class NotFoundException extends RuntimeException { 156 public NotFoundException() { 157 } 158 159 public NotFoundException(String name) { 160 super(name); 161 } 162 } 163 164 /** 165 * Create a new Resources object on top of an existing set of assets in an 166 * AssetManager. 167 * 168 * @param assets Previously created AssetManager. 169 * @param metrics Current display metrics to consider when 170 * selecting/computing resource values. 171 * @param config Desired device configuration to consider when 172 * selecting/computing resource values (optional). 173 */ 174 public Resources(AssetManager assets, DisplayMetrics metrics, 175 Configuration config) { 176 this(assets, metrics, config, (CompatibilityInfo) null); 177 } 178 179 /** 180 * Creates a new Resources object with CompatibilityInfo. 181 * 182 * @param assets Previously created AssetManager. 183 * @param metrics Current display metrics to consider when 184 * selecting/computing resource values. 185 * @param config Desired device configuration to consider when 186 * selecting/computing resource values (optional). 187 * @param compInfo this resource's compatibility info. It will use the default compatibility 188 * info when it's null. 189 * @hide 190 */ 191 public Resources(AssetManager assets, DisplayMetrics metrics, 192 Configuration config, CompatibilityInfo compInfo) { 193 mAssets = assets; 194 mMetrics.setToDefaults(); 195 mCompatibilityInfo = compInfo; 196 updateConfiguration(config, metrics); 197 assets.ensureStringBlocks(); 198 } 199 200 /** 201 * Return a global shared Resources object that provides access to only 202 * system resources (no application resources), and is not configured for 203 * the current screen (can not use dimension units, does not change based 204 * on orientation, etc). 205 */ 206 public static Resources getSystem() { 207 synchronized (mSync) { 208 Resources ret = mSystem; 209 if (ret == null) { 210 ret = new Resources(); 211 mSystem = ret; 212 } 213 214 return ret; 215 } 216 } 217 218 /** 219 * Return the string value associated with a particular resource ID. The 220 * returned object will be a String if this is a plain string; it will be 221 * some other type of CharSequence if it is styled. 222 * {@more} 223 * 224 * @param id The desired resource identifier, as generated by the aapt 225 * tool. This integer encodes the package, type, and resource 226 * entry. The value 0 is an invalid identifier. 227 * 228 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 229 * 230 * @return CharSequence The string data associated with the resource, plus 231 * possibly styled text information. 232 */ 233 public CharSequence getText(int id) throws NotFoundException { 234 CharSequence res = mAssets.getResourceText(id); 235 if (res != null) { 236 return res; 237 } 238 throw new NotFoundException("String resource ID #0x" 239 + Integer.toHexString(id)); 240 } 241 242 /** 243 * Return the character sequence associated with a particular resource ID for a particular 244 * numerical quantity. 245 * 246 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 247 * Resources</a> for more on quantity strings. 248 * 249 * @param id The desired resource identifier, as generated by the aapt 250 * tool. This integer encodes the package, type, and resource 251 * entry. The value 0 is an invalid identifier. 252 * @param quantity The number used to get the correct string for the current language's 253 * plural rules. 254 * 255 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 256 * 257 * @return CharSequence The string data associated with the resource, plus 258 * possibly styled text information. 259 */ 260 public CharSequence getQuantityText(int id, int quantity) throws NotFoundException { 261 NativePluralRules rule = getPluralRule(); 262 CharSequence res = mAssets.getResourceBagText(id, 263 attrForQuantityCode(rule.quantityForInt(quantity))); 264 if (res != null) { 265 return res; 266 } 267 res = mAssets.getResourceBagText(id, ID_OTHER); 268 if (res != null) { 269 return res; 270 } 271 throw new NotFoundException("Plural resource ID #0x" + Integer.toHexString(id) 272 + " quantity=" + quantity 273 + " item=" + stringForQuantityCode(rule.quantityForInt(quantity))); 274 } 275 276 private NativePluralRules getPluralRule() { 277 synchronized (mSync) { 278 if (mPluralRule == null) { 279 mPluralRule = NativePluralRules.forLocale(mConfiguration.locale); 280 } 281 return mPluralRule; 282 } 283 } 284 285 private static int attrForQuantityCode(int quantityCode) { 286 switch (quantityCode) { 287 case NativePluralRules.ZERO: return 0x01000005; 288 case NativePluralRules.ONE: return 0x01000006; 289 case NativePluralRules.TWO: return 0x01000007; 290 case NativePluralRules.FEW: return 0x01000008; 291 case NativePluralRules.MANY: return 0x01000009; 292 default: return ID_OTHER; 293 } 294 } 295 296 private static String stringForQuantityCode(int quantityCode) { 297 switch (quantityCode) { 298 case NativePluralRules.ZERO: return "zero"; 299 case NativePluralRules.ONE: return "one"; 300 case NativePluralRules.TWO: return "two"; 301 case NativePluralRules.FEW: return "few"; 302 case NativePluralRules.MANY: return "many"; 303 default: return "other"; 304 } 305 } 306 307 /** 308 * Return the string value associated with a particular resource ID. It 309 * will be stripped of any styled text information. 310 * {@more} 311 * 312 * @param id The desired resource identifier, as generated by the aapt 313 * tool. This integer encodes the package, type, and resource 314 * entry. The value 0 is an invalid identifier. 315 * 316 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 317 * 318 * @return String The string data associated with the resource, 319 * stripped of styled text information. 320 */ 321 public String getString(int id) throws NotFoundException { 322 CharSequence res = getText(id); 323 if (res != null) { 324 return res.toString(); 325 } 326 throw new NotFoundException("String resource ID #0x" 327 + Integer.toHexString(id)); 328 } 329 330 331 /** 332 * Return the string value associated with a particular resource ID, 333 * substituting the format arguments as defined in {@link java.util.Formatter} 334 * and {@link java.lang.String#format}. It will be stripped of any styled text 335 * information. 336 * {@more} 337 * 338 * @param id The desired resource identifier, as generated by the aapt 339 * tool. This integer encodes the package, type, and resource 340 * entry. The value 0 is an invalid identifier. 341 * 342 * @param formatArgs The format arguments that will be used for substitution. 343 * 344 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 345 * 346 * @return String The string data associated with the resource, 347 * stripped of styled text information. 348 */ 349 public String getString(int id, Object... formatArgs) throws NotFoundException { 350 String raw = getString(id); 351 return String.format(mConfiguration.locale, raw, formatArgs); 352 } 353 354 /** 355 * Return the string value associated with a particular resource ID for a particular 356 * numerical quantity, substituting the format arguments as defined in 357 * {@link java.util.Formatter} and {@link java.lang.String#format}. It will be 358 * stripped of any styled text information. 359 * {@more} 360 * 361 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 362 * Resources</a> for more on quantity strings. 363 * 364 * @param id The desired resource identifier, as generated by the aapt 365 * tool. This integer encodes the package, type, and resource 366 * entry. The value 0 is an invalid identifier. 367 * @param quantity The number used to get the correct string for the current language's 368 * plural rules. 369 * @param formatArgs The format arguments that will be used for substitution. 370 * 371 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 372 * 373 * @return String The string data associated with the resource, 374 * stripped of styled text information. 375 */ 376 public String getQuantityString(int id, int quantity, Object... formatArgs) 377 throws NotFoundException { 378 String raw = getQuantityText(id, quantity).toString(); 379 return String.format(mConfiguration.locale, raw, formatArgs); 380 } 381 382 /** 383 * Return the string value associated with a particular resource ID for a particular 384 * numerical quantity. 385 * 386 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 387 * Resources</a> for more on quantity strings. 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 * @param quantity The number used to get the correct string for the current language's 393 * plural rules. 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 getQuantityString(int id, int quantity) throws NotFoundException { 401 return getQuantityText(id, quantity).toString(); 402 } 403 404 /** 405 * Return the string value associated with a particular resource ID. The 406 * returned object will be a String if this is a plain string; it will be 407 * some other type of CharSequence if it is styled. 408 * 409 * @param id The desired resource identifier, as generated by the aapt 410 * tool. This integer encodes the package, type, and resource 411 * entry. The value 0 is an invalid identifier. 412 * 413 * @param def The default CharSequence to return. 414 * 415 * @return CharSequence The string data associated with the resource, plus 416 * possibly styled text information, or def if id is 0 or not found. 417 */ 418 public CharSequence getText(int id, CharSequence def) { 419 CharSequence res = id != 0 ? mAssets.getResourceText(id) : null; 420 return res != null ? res : def; 421 } 422 423 /** 424 * Return the styled text array associated with a particular resource ID. 425 * 426 * @param id The desired resource identifier, as generated by the aapt 427 * tool. This integer encodes the package, type, and resource 428 * entry. The value 0 is an invalid identifier. 429 * 430 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 431 * 432 * @return The styled text array associated with the resource. 433 */ 434 public CharSequence[] getTextArray(int id) throws NotFoundException { 435 CharSequence[] res = mAssets.getResourceTextArray(id); 436 if (res != null) { 437 return res; 438 } 439 throw new NotFoundException("Text array resource ID #0x" 440 + Integer.toHexString(id)); 441 } 442 443 /** 444 * Return the string array associated with a particular resource ID. 445 * 446 * @param id The desired resource identifier, as generated by the aapt 447 * tool. This integer encodes the package, type, and resource 448 * entry. The value 0 is an invalid identifier. 449 * 450 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 451 * 452 * @return The string array associated with the resource. 453 */ 454 public String[] getStringArray(int id) throws NotFoundException { 455 String[] res = mAssets.getResourceStringArray(id); 456 if (res != null) { 457 return res; 458 } 459 throw new NotFoundException("String array resource ID #0x" 460 + Integer.toHexString(id)); 461 } 462 463 /** 464 * Return the int array associated with a particular resource ID. 465 * 466 * @param id The desired resource identifier, as generated by the aapt 467 * tool. This integer encodes the package, type, and resource 468 * entry. The value 0 is an invalid identifier. 469 * 470 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 471 * 472 * @return The int array associated with the resource. 473 */ 474 public int[] getIntArray(int id) throws NotFoundException { 475 int[] res = mAssets.getArrayIntResource(id); 476 if (res != null) { 477 return res; 478 } 479 throw new NotFoundException("Int array resource ID #0x" 480 + Integer.toHexString(id)); 481 } 482 483 /** 484 * Return an array of heterogeneous values. 485 * 486 * @param id The desired resource identifier, as generated by the aapt 487 * tool. This integer encodes the package, type, and resource 488 * entry. The value 0 is an invalid identifier. 489 * 490 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 491 * 492 * @return Returns a TypedArray holding an array of the array values. 493 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 494 * when done with it. 495 */ 496 public TypedArray obtainTypedArray(int id) throws NotFoundException { 497 int len = mAssets.getArraySize(id); 498 if (len < 0) { 499 throw new NotFoundException("Array resource ID #0x" 500 + Integer.toHexString(id)); 501 } 502 503 TypedArray array = getCachedStyledAttributes(len); 504 array.mLength = mAssets.retrieveArray(id, array.mData); 505 array.mIndices[0] = 0; 506 507 return array; 508 } 509 510 /** 511 * Retrieve a dimensional for a particular resource ID. Unit 512 * conversions are based on the current {@link DisplayMetrics} associated 513 * with the resources. 514 * 515 * @param id The desired resource identifier, as generated by the aapt 516 * tool. This integer encodes the package, type, and resource 517 * entry. The value 0 is an invalid identifier. 518 * 519 * @return Resource dimension value multiplied by the appropriate 520 * metric. 521 * 522 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 523 * 524 * @see #getDimensionPixelOffset 525 * @see #getDimensionPixelSize 526 */ 527 public float getDimension(int id) throws NotFoundException { 528 synchronized (mTmpValue) { 529 TypedValue value = mTmpValue; 530 getValue(id, value, true); 531 if (value.type == TypedValue.TYPE_DIMENSION) { 532 return TypedValue.complexToDimension(value.data, mMetrics); 533 } 534 throw new NotFoundException( 535 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 536 + Integer.toHexString(value.type) + " is not valid"); 537 } 538 } 539 540 /** 541 * Retrieve a dimensional for a particular resource ID for use 542 * as an offset in raw pixels. This is the same as 543 * {@link #getDimension}, except the returned value is converted to 544 * integer pixels for you. An offset conversion involves simply 545 * truncating the base value to an integer. 546 * 547 * @param id The desired resource identifier, as generated by the aapt 548 * tool. This integer encodes the package, type, and resource 549 * entry. The value 0 is an invalid identifier. 550 * 551 * @return Resource dimension value multiplied by the appropriate 552 * metric and truncated to integer pixels. 553 * 554 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 555 * 556 * @see #getDimension 557 * @see #getDimensionPixelSize 558 */ 559 public int getDimensionPixelOffset(int id) throws NotFoundException { 560 synchronized (mTmpValue) { 561 TypedValue value = mTmpValue; 562 getValue(id, value, true); 563 if (value.type == TypedValue.TYPE_DIMENSION) { 564 return TypedValue.complexToDimensionPixelOffset( 565 value.data, mMetrics); 566 } 567 throw new NotFoundException( 568 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 569 + Integer.toHexString(value.type) + " is not valid"); 570 } 571 } 572 573 /** 574 * Retrieve a dimensional for a particular resource ID for use 575 * as a size in raw pixels. This is the same as 576 * {@link #getDimension}, except the returned value is converted to 577 * integer pixels for use as a size. A size conversion involves 578 * rounding the base value, and ensuring that a non-zero base value 579 * is at least one pixel in size. 580 * 581 * @param id The desired resource identifier, as generated by the aapt 582 * tool. This integer encodes the package, type, and resource 583 * entry. The value 0 is an invalid identifier. 584 * 585 * @return Resource dimension value multiplied by the appropriate 586 * metric and truncated to integer pixels. 587 * 588 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 589 * 590 * @see #getDimension 591 * @see #getDimensionPixelOffset 592 */ 593 public int getDimensionPixelSize(int id) throws NotFoundException { 594 synchronized (mTmpValue) { 595 TypedValue value = mTmpValue; 596 getValue(id, value, true); 597 if (value.type == TypedValue.TYPE_DIMENSION) { 598 return TypedValue.complexToDimensionPixelSize( 599 value.data, mMetrics); 600 } 601 throw new NotFoundException( 602 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 603 + Integer.toHexString(value.type) + " is not valid"); 604 } 605 } 606 607 /** 608 * Retrieve a fractional unit for a particular resource ID. 609 * 610 * @param id The desired resource identifier, as generated by the aapt 611 * tool. This integer encodes the package, type, and resource 612 * entry. The value 0 is an invalid identifier. 613 * @param base The base value of this fraction. In other words, a 614 * standard fraction is multiplied by this value. 615 * @param pbase The parent base value of this fraction. In other 616 * words, a parent fraction (nn%p) is multiplied by this 617 * value. 618 * 619 * @return Attribute fractional value multiplied by the appropriate 620 * base value. 621 * 622 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 623 */ 624 public float getFraction(int id, int base, int pbase) { 625 synchronized (mTmpValue) { 626 TypedValue value = mTmpValue; 627 getValue(id, value, true); 628 if (value.type == TypedValue.TYPE_FRACTION) { 629 return TypedValue.complexToFraction(value.data, base, pbase); 630 } 631 throw new NotFoundException( 632 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 633 + Integer.toHexString(value.type) + " is not valid"); 634 } 635 } 636 637 /** 638 * Return a drawable object associated with a particular resource ID. 639 * Various types of objects will be returned depending on the underlying 640 * resource -- for example, a solid color, PNG image, scalable image, etc. 641 * The Drawable API hides these implementation details. 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 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 648 * 649 * @return Drawable An object that can be used to draw this resource. 650 */ 651 public Drawable getDrawable(int id) throws NotFoundException { 652 synchronized (mTmpValue) { 653 TypedValue value = mTmpValue; 654 getValue(id, value, true); 655 return loadDrawable(value, id); 656 } 657 } 658 659 /** 660 * Return a drawable object associated with a particular resource ID for the 661 * given screen density in DPI. This will set the drawable's density to be 662 * the device's density multiplied by the ratio of actual drawable density 663 * to requested density. This allows the drawable to be scaled up to the 664 * correct size if needed. Various types of objects will be returned 665 * depending on the underlying resource -- for example, a solid color, PNG 666 * image, scalable image, etc. The Drawable API hides these implementation 667 * details. 668 * 669 * @param id The desired resource identifier, as generated by the aapt tool. 670 * This integer encodes the package, type, and resource entry. 671 * The value 0 is an invalid identifier. 672 * @param density the desired screen density indicated by the resource as 673 * found in {@link DisplayMetrics}. 674 * @throws NotFoundException Throws NotFoundException if the given ID does 675 * not exist. 676 * @return Drawable An object that can be used to draw this resource. 677 * @hide 678 */ 679 public Drawable getDrawableForDensity(int id, int density) throws NotFoundException { 680 synchronized (mTmpValue) { 681 TypedValue value = mTmpValue; 682 getValueForDensity(id, density, value, true); 683 684 /* 685 * Pretend the requested density is actually the display density. If 686 * the drawable returned is not the requested density, then force it 687 * to be scaled later by dividing its density by the ratio of 688 * requested density to actual device density. Drawables that have 689 * undefined density or no density don't need to be handled here. 690 */ 691 if (value.density > 0 && value.density != TypedValue.DENSITY_NONE) { 692 if (value.density == density) { 693 value.density = DisplayMetrics.DENSITY_DEVICE; 694 } else { 695 value.density = (value.density * DisplayMetrics.DENSITY_DEVICE) / density; 696 } 697 } 698 699 return loadDrawable(value, id); 700 } 701 } 702 703 /** 704 * Return a movie object associated with the particular resource ID. 705 * @param id The desired resource identifier, as generated by the aapt 706 * tool. This integer encodes the package, type, and resource 707 * entry. The value 0 is an invalid identifier. 708 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 709 * 710 */ 711 public Movie getMovie(int id) throws NotFoundException { 712 InputStream is = openRawResource(id); 713 Movie movie = Movie.decodeStream(is); 714 try { 715 is.close(); 716 } 717 catch (java.io.IOException e) { 718 // don't care, since the return value is valid 719 } 720 return movie; 721 } 722 723 /** 724 * Return a color integer associated with a particular resource ID. 725 * If the resource holds a complex 726 * {@link android.content.res.ColorStateList}, then the default color from 727 * the set is returned. 728 * 729 * @param id The desired resource identifier, as generated by the aapt 730 * tool. This integer encodes the package, type, and resource 731 * entry. The value 0 is an invalid identifier. 732 * 733 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 734 * 735 * @return Returns a single color value in the form 0xAARRGGBB. 736 */ 737 public int getColor(int id) throws NotFoundException { 738 synchronized (mTmpValue) { 739 TypedValue value = mTmpValue; 740 getValue(id, value, true); 741 if (value.type >= TypedValue.TYPE_FIRST_INT 742 && value.type <= TypedValue.TYPE_LAST_INT) { 743 return value.data; 744 } else if (value.type == TypedValue.TYPE_STRING) { 745 ColorStateList csl = loadColorStateList(mTmpValue, id); 746 return csl.getDefaultColor(); 747 } 748 throw new NotFoundException( 749 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 750 + Integer.toHexString(value.type) + " is not valid"); 751 } 752 } 753 754 /** 755 * Return a color state list associated with a particular resource ID. The 756 * resource may contain either a single raw color value, or a complex 757 * {@link android.content.res.ColorStateList} holding multiple possible colors. 758 * 759 * @param id The desired resource identifier of a {@link ColorStateList}, 760 * as generated by the aapt tool. This integer encodes the package, type, and resource 761 * entry. The value 0 is an invalid identifier. 762 * 763 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 764 * 765 * @return Returns a ColorStateList object containing either a single 766 * solid color or multiple colors that can be selected based on a state. 767 */ 768 public ColorStateList getColorStateList(int id) throws NotFoundException { 769 synchronized (mTmpValue) { 770 TypedValue value = mTmpValue; 771 getValue(id, value, true); 772 return loadColorStateList(value, id); 773 } 774 } 775 776 /** 777 * Return a boolean associated with a particular resource ID. This can be 778 * used with any integral resource value, and will return true if it is 779 * non-zero. 780 * 781 * @param id The desired resource identifier, as generated by the aapt 782 * tool. This integer encodes the package, type, and resource 783 * entry. The value 0 is an invalid identifier. 784 * 785 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 786 * 787 * @return Returns the boolean value contained in the resource. 788 */ 789 public boolean getBoolean(int id) throws NotFoundException { 790 synchronized (mTmpValue) { 791 TypedValue value = mTmpValue; 792 getValue(id, value, true); 793 if (value.type >= TypedValue.TYPE_FIRST_INT 794 && value.type <= TypedValue.TYPE_LAST_INT) { 795 return value.data != 0; 796 } 797 throw new NotFoundException( 798 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 799 + Integer.toHexString(value.type) + " is not valid"); 800 } 801 } 802 803 /** 804 * Return an integer associated with a particular resource ID. 805 * 806 * @param id The desired resource identifier, as generated by the aapt 807 * tool. This integer encodes the package, type, and resource 808 * entry. The value 0 is an invalid identifier. 809 * 810 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 811 * 812 * @return Returns the integer value contained in the resource. 813 */ 814 public int getInteger(int id) throws NotFoundException { 815 synchronized (mTmpValue) { 816 TypedValue value = mTmpValue; 817 getValue(id, value, true); 818 if (value.type >= TypedValue.TYPE_FIRST_INT 819 && value.type <= TypedValue.TYPE_LAST_INT) { 820 return value.data; 821 } 822 throw new NotFoundException( 823 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 824 + Integer.toHexString(value.type) + " is not valid"); 825 } 826 } 827 828 /** 829 * Return an XmlResourceParser through which you can read a view layout 830 * description for the given resource ID. This parser has limited 831 * functionality -- in particular, you can't change its input, and only 832 * the high-level events are available. 833 * 834 * <p>This function is really a simple wrapper for calling 835 * {@link #getXml} with a layout resource. 836 * 837 * @param id The desired resource identifier, as generated by the aapt 838 * tool. This integer encodes the package, type, and resource 839 * entry. The value 0 is an invalid identifier. 840 * 841 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 842 * 843 * @return A new parser object through which you can read 844 * the XML data. 845 * 846 * @see #getXml 847 */ 848 public XmlResourceParser getLayout(int id) throws NotFoundException { 849 return loadXmlResourceParser(id, "layout"); 850 } 851 852 /** 853 * Return an XmlResourceParser through which you can read an animation 854 * description for the given resource ID. This parser has limited 855 * functionality -- in particular, you can't change its input, and only 856 * the high-level events are available. 857 * 858 * <p>This function is really a simple wrapper for calling 859 * {@link #getXml} with an animation resource. 860 * 861 * @param id The desired resource identifier, as generated by the aapt 862 * tool. This integer encodes the package, type, and resource 863 * entry. The value 0 is an invalid identifier. 864 * 865 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 866 * 867 * @return A new parser object through which you can read 868 * the XML data. 869 * 870 * @see #getXml 871 */ 872 public XmlResourceParser getAnimation(int id) throws NotFoundException { 873 return loadXmlResourceParser(id, "anim"); 874 } 875 876 /** 877 * Return an XmlResourceParser through which you can read a generic XML 878 * resource for the given resource ID. 879 * 880 * <p>The XmlPullParser implementation returned here has some limited 881 * functionality. In particular, you can't change its input, and only 882 * high-level parsing events are available (since the document was 883 * pre-parsed for you at build time, which involved merging text and 884 * stripping comments). 885 * 886 * @param id The desired resource identifier, as generated by the aapt 887 * tool. This integer encodes the package, type, and resource 888 * entry. The value 0 is an invalid identifier. 889 * 890 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 891 * 892 * @return A new parser object through which you can read 893 * the XML data. 894 * 895 * @see android.util.AttributeSet 896 */ 897 public XmlResourceParser getXml(int id) throws NotFoundException { 898 return loadXmlResourceParser(id, "xml"); 899 } 900 901 /** 902 * Open a data stream for reading a raw resource. This can only be used 903 * with resources whose value is the name of an asset files -- that is, it can be 904 * used to open drawable, sound, and raw resources; it will fail on string 905 * and color resources. 906 * 907 * @param id The resource identifier to open, as generated by the appt 908 * tool. 909 * 910 * @return InputStream Access to the resource data. 911 * 912 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 913 * 914 */ 915 public InputStream openRawResource(int id) throws NotFoundException { 916 synchronized (mTmpValue) { 917 return openRawResource(id, mTmpValue); 918 } 919 } 920 921 /** 922 * Open a data stream for reading a raw resource. This can only be used 923 * with resources whose value is the name of an asset file -- that is, it can be 924 * used to open drawable, sound, and raw resources; it will fail on string 925 * and color resources. 926 * 927 * @param id The resource identifier to open, as generated by the appt tool. 928 * @param value The TypedValue object to hold the resource information. 929 * 930 * @return InputStream Access to the resource data. 931 * 932 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 933 */ 934 public InputStream openRawResource(int id, TypedValue value) throws NotFoundException { 935 getValue(id, value, true); 936 937 try { 938 return mAssets.openNonAsset(value.assetCookie, value.string.toString(), 939 AssetManager.ACCESS_STREAMING); 940 } catch (Exception e) { 941 NotFoundException rnf = new NotFoundException("File " + value.string.toString() + 942 " from drawable resource ID #0x" + Integer.toHexString(id)); 943 rnf.initCause(e); 944 throw rnf; 945 } 946 } 947 948 /** 949 * Open a file descriptor for reading a raw resource. This can only be used 950 * with resources whose value is the name of an asset files -- that is, it can be 951 * used to open drawable, sound, and raw resources; it will fail on string 952 * and color resources. 953 * 954 * <p>This function only works for resources that are stored in the package 955 * as uncompressed data, which typically includes things like mp3 files 956 * and png images. 957 * 958 * @param id The resource identifier to open, as generated by the appt 959 * tool. 960 * 961 * @return AssetFileDescriptor A new file descriptor you can use to read 962 * the resource. This includes the file descriptor itself, as well as the 963 * offset and length of data where the resource appears in the file. A 964 * null is returned if the file exists but is compressed. 965 * 966 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 967 * 968 */ 969 public AssetFileDescriptor openRawResourceFd(int id) throws NotFoundException { 970 synchronized (mTmpValue) { 971 TypedValue value = mTmpValue; 972 getValue(id, value, true); 973 974 try { 975 return mAssets.openNonAssetFd( 976 value.assetCookie, value.string.toString()); 977 } catch (Exception e) { 978 NotFoundException rnf = new NotFoundException( 979 "File " + value.string.toString() 980 + " from drawable resource ID #0x" 981 + Integer.toHexString(id)); 982 rnf.initCause(e); 983 throw rnf; 984 } 985 986 } 987 } 988 989 /** 990 * Return the raw data associated with a particular resource ID. 991 * 992 * @param id The desired resource identifier, as generated by the aapt 993 * tool. This integer encodes the package, type, and resource 994 * entry. The value 0 is an invalid identifier. 995 * @param outValue Object in which to place the resource data. 996 * @param resolveRefs If true, a resource that is a reference to another 997 * resource will be followed so that you receive the 998 * actual final resource data. If false, the TypedValue 999 * will be filled in with the reference itself. 1000 * 1001 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1002 * 1003 */ 1004 public void getValue(int id, TypedValue outValue, boolean resolveRefs) 1005 throws NotFoundException { 1006 boolean found = mAssets.getResourceValue(id, 0, outValue, resolveRefs); 1007 if (found) { 1008 return; 1009 } 1010 throw new NotFoundException("Resource ID #0x" 1011 + Integer.toHexString(id)); 1012 } 1013 1014 /** 1015 * Get the raw value associated with a resource with associated density. 1016 * 1017 * @param id resource identifier 1018 * @param density density in DPI 1019 * @param resolveRefs If true, a resource that is a reference to another 1020 * resource will be followed so that you receive the actual final 1021 * resource data. If false, the TypedValue will be filled in with 1022 * the reference itself. 1023 * @throws NotFoundException Throws NotFoundException if the given ID does 1024 * not exist. 1025 * @see #getValue(String, TypedValue, boolean) 1026 * @hide 1027 */ 1028 public void getValueForDensity(int id, int density, TypedValue outValue, boolean resolveRefs) 1029 throws NotFoundException { 1030 boolean found = mAssets.getResourceValue(id, density, outValue, resolveRefs); 1031 if (found) { 1032 return; 1033 } 1034 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id)); 1035 } 1036 1037 /** 1038 * Return the raw data associated with a particular resource ID. 1039 * See getIdentifier() for information on how names are mapped to resource 1040 * IDs, and getString(int) for information on how string resources are 1041 * retrieved. 1042 * 1043 * <p>Note: use of this function is discouraged. It is much more 1044 * efficient to retrieve resources by identifier than by name. 1045 * 1046 * @param name The name of the desired resource. This is passed to 1047 * getIdentifier() with a default type of "string". 1048 * @param outValue Object in which to place the resource data. 1049 * @param resolveRefs If true, a resource that is a reference to another 1050 * resource will be followed so that you receive the 1051 * actual final resource data. If false, the TypedValue 1052 * will be filled in with the reference itself. 1053 * 1054 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1055 * 1056 */ 1057 public void getValue(String name, TypedValue outValue, boolean resolveRefs) 1058 throws NotFoundException { 1059 int id = getIdentifier(name, "string", null); 1060 if (id != 0) { 1061 getValue(id, outValue, resolveRefs); 1062 return; 1063 } 1064 throw new NotFoundException("String resource name " + name); 1065 } 1066 1067 /** 1068 * This class holds the current attribute values for a particular theme. 1069 * In other words, a Theme is a set of values for resource attributes; 1070 * these are used in conjunction with {@link TypedArray} 1071 * to resolve the final value for an attribute. 1072 * 1073 * <p>The Theme's attributes come into play in two ways: (1) a styled 1074 * attribute can explicit reference a value in the theme through the 1075 * "?themeAttribute" syntax; (2) if no value has been defined for a 1076 * particular styled attribute, as a last resort we will try to find that 1077 * attribute's value in the Theme. 1078 * 1079 * <p>You will normally use the {@link #obtainStyledAttributes} APIs to 1080 * retrieve XML attributes with style and theme information applied. 1081 */ 1082 public final class Theme { 1083 /** 1084 * Place new attribute values into the theme. The style resource 1085 * specified by <var>resid</var> will be retrieved from this Theme's 1086 * resources, its values placed into the Theme object. 1087 * 1088 * <p>The semantics of this function depends on the <var>force</var> 1089 * argument: If false, only values that are not already defined in 1090 * the theme will be copied from the system resource; otherwise, if 1091 * any of the style's attributes are already defined in the theme, the 1092 * current values in the theme will be overwritten. 1093 * 1094 * @param resid The resource ID of a style resource from which to 1095 * obtain attribute values. 1096 * @param force If true, values in the style resource will always be 1097 * used in the theme; otherwise, they will only be used 1098 * if not already defined in the theme. 1099 */ 1100 public void applyStyle(int resid, boolean force) { 1101 AssetManager.applyThemeStyle(mTheme, resid, force); 1102 } 1103 1104 /** 1105 * Set this theme to hold the same contents as the theme 1106 * <var>other</var>. If both of these themes are from the same 1107 * Resources object, they will be identical after this function 1108 * returns. If they are from different Resources, only the resources 1109 * they have in common will be set in this theme. 1110 * 1111 * @param other The existing Theme to copy from. 1112 */ 1113 public void setTo(Theme other) { 1114 AssetManager.copyTheme(mTheme, other.mTheme); 1115 } 1116 1117 /** 1118 * Return a StyledAttributes holding the values defined by 1119 * <var>Theme</var> which are listed in <var>attrs</var>. 1120 * 1121 * <p>Be sure to call StyledAttributes.recycle() when you are done with 1122 * the array. 1123 * 1124 * @param attrs The desired attributes. 1125 * 1126 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1127 * 1128 * @return Returns a TypedArray holding an array of the attribute values. 1129 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1130 * when done with it. 1131 * 1132 * @see Resources#obtainAttributes 1133 * @see #obtainStyledAttributes(int, int[]) 1134 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1135 */ 1136 public TypedArray obtainStyledAttributes(int[] attrs) { 1137 int len = attrs.length; 1138 TypedArray array = getCachedStyledAttributes(len); 1139 array.mRsrcs = attrs; 1140 AssetManager.applyStyle(mTheme, 0, 0, 0, attrs, 1141 array.mData, array.mIndices); 1142 return array; 1143 } 1144 1145 /** 1146 * Return a StyledAttributes holding the values defined by the style 1147 * resource <var>resid</var> which are listed in <var>attrs</var>. 1148 * 1149 * <p>Be sure to call StyledAttributes.recycle() when you are done with 1150 * the array. 1151 * 1152 * @param resid The desired style resource. 1153 * @param attrs The desired attributes in the style. 1154 * 1155 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1156 * 1157 * @return Returns a TypedArray holding an array of the attribute values. 1158 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1159 * when done with it. 1160 * 1161 * @see Resources#obtainAttributes 1162 * @see #obtainStyledAttributes(int[]) 1163 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1164 */ 1165 public TypedArray obtainStyledAttributes(int resid, int[] attrs) 1166 throws NotFoundException { 1167 int len = attrs.length; 1168 TypedArray array = getCachedStyledAttributes(len); 1169 array.mRsrcs = attrs; 1170 1171 AssetManager.applyStyle(mTheme, 0, resid, 0, attrs, 1172 array.mData, array.mIndices); 1173 if (false) { 1174 int[] data = array.mData; 1175 1176 System.out.println("**********************************************************"); 1177 System.out.println("**********************************************************"); 1178 System.out.println("**********************************************************"); 1179 System.out.println("Attributes:"); 1180 String s = " Attrs:"; 1181 int i; 1182 for (i=0; i<attrs.length; i++) { 1183 s = s + " 0x" + Integer.toHexString(attrs[i]); 1184 } 1185 System.out.println(s); 1186 s = " Found:"; 1187 TypedValue value = new TypedValue(); 1188 for (i=0; i<attrs.length; i++) { 1189 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1190 value.type = data[d+AssetManager.STYLE_TYPE]; 1191 value.data = data[d+AssetManager.STYLE_DATA]; 1192 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1193 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1194 s = s + " 0x" + Integer.toHexString(attrs[i]) 1195 + "=" + value; 1196 } 1197 System.out.println(s); 1198 } 1199 return array; 1200 } 1201 1202 /** 1203 * Return a StyledAttributes holding the attribute values in 1204 * <var>set</var> 1205 * that are listed in <var>attrs</var>. In addition, if the given 1206 * AttributeSet specifies a style class (through the "style" attribute), 1207 * that style will be applied on top of the base attributes it defines. 1208 * 1209 * <p>Be sure to call StyledAttributes.recycle() when you are done with 1210 * the array. 1211 * 1212 * <p>When determining the final value of a particular attribute, there 1213 * are four inputs that come into play:</p> 1214 * 1215 * <ol> 1216 * <li> Any attribute values in the given AttributeSet. 1217 * <li> The style resource specified in the AttributeSet (named 1218 * "style"). 1219 * <li> The default style specified by <var>defStyleAttr</var> and 1220 * <var>defStyleRes</var> 1221 * <li> The base values in this theme. 1222 * </ol> 1223 * 1224 * <p>Each of these inputs is considered in-order, with the first listed 1225 * taking precedence over the following ones. In other words, if in the 1226 * AttributeSet you have supplied <code><Button 1227 * textColor="#ff000000"></code>, then the button's text will 1228 * <em>always</em> be black, regardless of what is specified in any of 1229 * the styles. 1230 * 1231 * @param set The base set of attribute values. May be null. 1232 * @param attrs The desired attributes to be retrieved. 1233 * @param defStyleAttr An attribute in the current theme that contains a 1234 * reference to a style resource that supplies 1235 * defaults values for the StyledAttributes. Can be 1236 * 0 to not look for defaults. 1237 * @param defStyleRes A resource identifier of a style resource that 1238 * supplies default values for the StyledAttributes, 1239 * used only if defStyleAttr is 0 or can not be found 1240 * in the theme. Can be 0 to not look for defaults. 1241 * 1242 * @return Returns a TypedArray holding an array of the attribute values. 1243 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1244 * when done with it. 1245 * 1246 * @see Resources#obtainAttributes 1247 * @see #obtainStyledAttributes(int[]) 1248 * @see #obtainStyledAttributes(int, int[]) 1249 */ 1250 public TypedArray obtainStyledAttributes(AttributeSet set, 1251 int[] attrs, int defStyleAttr, int defStyleRes) { 1252 int len = attrs.length; 1253 TypedArray array = getCachedStyledAttributes(len); 1254 1255 // XXX note that for now we only work with compiled XML files. 1256 // To support generic XML files we will need to manually parse 1257 // out the attributes from the XML file (applying type information 1258 // contained in the resources and such). 1259 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1260 AssetManager.applyStyle( 1261 mTheme, defStyleAttr, defStyleRes, 1262 parser != null ? parser.mParseState : 0, attrs, 1263 array.mData, array.mIndices); 1264 1265 array.mRsrcs = attrs; 1266 array.mXml = parser; 1267 1268 if (false) { 1269 int[] data = array.mData; 1270 1271 System.out.println("Attributes:"); 1272 String s = " Attrs:"; 1273 int i; 1274 for (i=0; i<set.getAttributeCount(); i++) { 1275 s = s + " " + set.getAttributeName(i); 1276 int id = set.getAttributeNameResource(i); 1277 if (id != 0) { 1278 s = s + "(0x" + Integer.toHexString(id) + ")"; 1279 } 1280 s = s + "=" + set.getAttributeValue(i); 1281 } 1282 System.out.println(s); 1283 s = " Found:"; 1284 TypedValue value = new TypedValue(); 1285 for (i=0; i<attrs.length; i++) { 1286 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1287 value.type = data[d+AssetManager.STYLE_TYPE]; 1288 value.data = data[d+AssetManager.STYLE_DATA]; 1289 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1290 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1291 s = s + " 0x" + Integer.toHexString(attrs[i]) 1292 + "=" + value; 1293 } 1294 System.out.println(s); 1295 } 1296 1297 return array; 1298 } 1299 1300 /** 1301 * Retrieve the value of an attribute in the Theme. The contents of 1302 * <var>outValue</var> are ultimately filled in by 1303 * {@link Resources#getValue}. 1304 * 1305 * @param resid The resource identifier of the desired theme 1306 * attribute. 1307 * @param outValue Filled in with the ultimate resource value supplied 1308 * by the attribute. 1309 * @param resolveRefs If true, resource references will be walked; if 1310 * false, <var>outValue</var> may be a 1311 * TYPE_REFERENCE. In either case, it will never 1312 * be a TYPE_ATTRIBUTE. 1313 * 1314 * @return boolean Returns true if the attribute was found and 1315 * <var>outValue</var> is valid, else false. 1316 */ 1317 public boolean resolveAttribute(int resid, TypedValue outValue, 1318 boolean resolveRefs) { 1319 boolean got = mAssets.getThemeValue(mTheme, resid, outValue, resolveRefs); 1320 if (false) { 1321 System.out.println( 1322 "resolveAttribute #" + Integer.toHexString(resid) 1323 + " got=" + got + ", type=0x" + Integer.toHexString(outValue.type) 1324 + ", data=0x" + Integer.toHexString(outValue.data)); 1325 } 1326 return got; 1327 } 1328 1329 /** 1330 * Print contents of this theme out to the log. For debugging only. 1331 * 1332 * @param priority The log priority to use. 1333 * @param tag The log tag to use. 1334 * @param prefix Text to prefix each line printed. 1335 */ 1336 public void dump(int priority, String tag, String prefix) { 1337 AssetManager.dumpTheme(mTheme, priority, tag, prefix); 1338 } 1339 1340 protected void finalize() throws Throwable { 1341 super.finalize(); 1342 mAssets.releaseTheme(mTheme); 1343 } 1344 1345 /*package*/ Theme() { 1346 mAssets = Resources.this.mAssets; 1347 mTheme = mAssets.createTheme(); 1348 } 1349 1350 private final AssetManager mAssets; 1351 private final int mTheme; 1352 } 1353 1354 /** 1355 * Generate a new Theme object for this set of Resources. It initially 1356 * starts out empty. 1357 * 1358 * @return Theme The newly created Theme container. 1359 */ 1360 public final Theme newTheme() { 1361 return new Theme(); 1362 } 1363 1364 /** 1365 * Retrieve a set of basic attribute values from an AttributeSet, not 1366 * performing styling of them using a theme and/or style resources. 1367 * 1368 * @param set The current attribute values to retrieve. 1369 * @param attrs The specific attributes to be retrieved. 1370 * @return Returns a TypedArray holding an array of the attribute values. 1371 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1372 * when done with it. 1373 * 1374 * @see Theme#obtainStyledAttributes(AttributeSet, int[], int, int) 1375 */ 1376 public TypedArray obtainAttributes(AttributeSet set, int[] attrs) { 1377 int len = attrs.length; 1378 TypedArray array = getCachedStyledAttributes(len); 1379 1380 // XXX note that for now we only work with compiled XML files. 1381 // To support generic XML files we will need to manually parse 1382 // out the attributes from the XML file (applying type information 1383 // contained in the resources and such). 1384 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1385 mAssets.retrieveAttributes(parser.mParseState, attrs, 1386 array.mData, array.mIndices); 1387 1388 array.mRsrcs = attrs; 1389 array.mXml = parser; 1390 1391 return array; 1392 } 1393 1394 /** 1395 * Store the newly updated configuration. 1396 */ 1397 public void updateConfiguration(Configuration config, 1398 DisplayMetrics metrics) { 1399 updateConfiguration(config, metrics, null); 1400 } 1401 1402 /** 1403 * @hide 1404 */ 1405 public void updateConfiguration(Configuration config, 1406 DisplayMetrics metrics, CompatibilityInfo compat) { 1407 synchronized (mTmpValue) { 1408 if (false) { 1409 Slog.i(TAG, "**** Updating config of " + this + ": old config is " 1410 + mConfiguration + " old compat is " + mCompatibilityInfo); 1411 Slog.i(TAG, "**** Updating config of " + this + ": new config is " 1412 + config + " new compat is " + compat); 1413 } 1414 if (compat != null) { 1415 mCompatibilityInfo = compat; 1416 } 1417 if (metrics != null) { 1418 mMetrics.setTo(metrics); 1419 // NOTE: We should re-arrange this code to create a Display 1420 // with the CompatibilityInfo that is used everywhere we deal 1421 // with the display in relation to this app, rather than 1422 // doing the conversion here. This impl should be okay because 1423 // we make sure to return a compatible display in the places 1424 // where there are public APIs to retrieve the display... but 1425 // it would be cleaner and more maintainble to just be 1426 // consistently dealing with a compatible display everywhere in 1427 // the framework. 1428 if (mCompatibilityInfo != null) { 1429 mCompatibilityInfo.applyToDisplayMetrics(mMetrics); 1430 } 1431 } 1432 if (mCompatibilityInfo != null) { 1433 mCompatibilityInfo.applyToDisplayMetrics(mMetrics); 1434 } 1435 mMetrics.scaledDensity = mMetrics.density * mConfiguration.fontScale; 1436 int configChanges = 0xfffffff; 1437 if (config != null) { 1438 mTmpConfig.setTo(config); 1439 if (mCompatibilityInfo != null) { 1440 mCompatibilityInfo.applyToConfiguration(mTmpConfig); 1441 } 1442 if (mTmpConfig.locale == null) { 1443 mTmpConfig.locale = Locale.getDefault(); 1444 } 1445 configChanges = mConfiguration.updateFrom(mTmpConfig); 1446 configChanges = ActivityInfo.activityInfoConfigToNative(configChanges); 1447 } 1448 if (mConfiguration.locale == null) { 1449 mConfiguration.locale = Locale.getDefault(); 1450 } 1451 1452 String locale = null; 1453 if (mConfiguration.locale != null) { 1454 locale = mConfiguration.locale.getLanguage(); 1455 if (mConfiguration.locale.getCountry() != null) { 1456 locale += "-" + mConfiguration.locale.getCountry(); 1457 } 1458 } 1459 int width, height; 1460 if (mMetrics.widthPixels >= mMetrics.heightPixels) { 1461 width = mMetrics.widthPixels; 1462 height = mMetrics.heightPixels; 1463 } else { 1464 //noinspection SuspiciousNameCombination 1465 width = mMetrics.heightPixels; 1466 //noinspection SuspiciousNameCombination 1467 height = mMetrics.widthPixels; 1468 } 1469 int keyboardHidden = mConfiguration.keyboardHidden; 1470 if (keyboardHidden == Configuration.KEYBOARDHIDDEN_NO 1471 && mConfiguration.hardKeyboardHidden 1472 == Configuration.HARDKEYBOARDHIDDEN_YES) { 1473 keyboardHidden = Configuration.KEYBOARDHIDDEN_SOFT; 1474 } 1475 mAssets.setConfiguration(mConfiguration.mcc, mConfiguration.mnc, 1476 locale, mConfiguration.orientation, 1477 mConfiguration.touchscreen, 1478 (int)(mMetrics.density*160), mConfiguration.keyboard, 1479 keyboardHidden, mConfiguration.navigation, width, height, 1480 mConfiguration.smallestScreenWidthDp, 1481 mConfiguration.screenWidthDp, mConfiguration.screenHeightDp, 1482 mConfiguration.screenLayout, mConfiguration.uiMode, 1483 Build.VERSION.RESOURCES_SDK_INT); 1484 1485 if (DEBUG_CONFIG) { 1486 Slog.i(TAG, "**** Updating config of " + this + ": final config is " + mConfiguration 1487 + " final compat is " + mCompatibilityInfo); 1488 } 1489 1490 clearDrawableCache(mDrawableCache, configChanges); 1491 clearDrawableCache(mColorDrawableCache, configChanges); 1492 1493 mColorStateListCache.clear(); 1494 1495 flushLayoutCache(); 1496 } 1497 synchronized (mSync) { 1498 if (mPluralRule != null) { 1499 mPluralRule = NativePluralRules.forLocale(config.locale); 1500 } 1501 } 1502 } 1503 1504 private void clearDrawableCache( 1505 LongSparseArray<WeakReference<ConstantState>> cache, 1506 int configChanges) { 1507 int N = cache.size(); 1508 if (DEBUG_CONFIG) { 1509 Log.d(TAG, "Cleaning up drawables config changes: 0x" 1510 + Integer.toHexString(configChanges)); 1511 } 1512 for (int i=0; i<N; i++) { 1513 WeakReference<Drawable.ConstantState> ref = cache.valueAt(i); 1514 if (ref != null) { 1515 Drawable.ConstantState cs = ref.get(); 1516 if (cs != null) { 1517 if (Configuration.needNewResources( 1518 configChanges, cs.getChangingConfigurations())) { 1519 if (DEBUG_CONFIG) { 1520 Log.d(TAG, "FLUSHING #0x" 1521 + Long.toHexString(mDrawableCache.keyAt(i)) 1522 + " / " + cs + " with changes: 0x" 1523 + Integer.toHexString(cs.getChangingConfigurations())); 1524 } 1525 cache.setValueAt(i, null); 1526 } else if (DEBUG_CONFIG) { 1527 Log.d(TAG, "(Keeping #0x" 1528 + Long.toHexString(cache.keyAt(i)) 1529 + " / " + cs + " with changes: 0x" 1530 + Integer.toHexString(cs.getChangingConfigurations()) 1531 + ")"); 1532 } 1533 } 1534 } 1535 } 1536 } 1537 1538 /** 1539 * Update the system resources configuration if they have previously 1540 * been initialized. 1541 * 1542 * @hide 1543 */ 1544 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics, 1545 CompatibilityInfo compat) { 1546 if (mSystem != null) { 1547 mSystem.updateConfiguration(config, metrics, compat); 1548 //Log.i(TAG, "Updated system resources " + mSystem 1549 // + ": " + mSystem.getConfiguration()); 1550 } 1551 } 1552 1553 /** 1554 * @hide 1555 */ 1556 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics) { 1557 updateSystemConfiguration(config, metrics, null); 1558 } 1559 1560 /** 1561 * Return the current display metrics that are in effect for this resource 1562 * object. The returned object should be treated as read-only. 1563 * 1564 * @return The resource's current display metrics. 1565 */ 1566 public DisplayMetrics getDisplayMetrics() { 1567 if (DEBUG_CONFIG) Slog.v(TAG, "Returning DisplayMetrics: " + mMetrics.widthPixels 1568 + "x" + mMetrics.heightPixels + " " + mMetrics.density); 1569 return mMetrics; 1570 } 1571 1572 /** 1573 * Return the current configuration that is in effect for this resource 1574 * object. The returned object should be treated as read-only. 1575 * 1576 * @return The resource's current configuration. 1577 */ 1578 public Configuration getConfiguration() { 1579 return mConfiguration; 1580 } 1581 1582 /** 1583 * Return the compatibility mode information for the application. 1584 * The returned object should be treated as read-only. 1585 * 1586 * @return compatibility info. 1587 * @hide 1588 */ 1589 public CompatibilityInfo getCompatibilityInfo() { 1590 return mCompatibilityInfo != null ? mCompatibilityInfo 1591 : CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 1592 } 1593 1594 /** 1595 * This is just for testing. 1596 * @hide 1597 */ 1598 public void setCompatibilityInfo(CompatibilityInfo ci) { 1599 mCompatibilityInfo = ci; 1600 updateConfiguration(mConfiguration, mMetrics); 1601 } 1602 1603 /** 1604 * Return a resource identifier for the given resource name. A fully 1605 * qualified resource name is of the form "package:type/entry". The first 1606 * two components (package and type) are optional if defType and 1607 * defPackage, respectively, are specified here. 1608 * 1609 * <p>Note: use of this function is discouraged. It is much more 1610 * efficient to retrieve resources by identifier than by name. 1611 * 1612 * @param name The name of the desired resource. 1613 * @param defType Optional default resource type to find, if "type/" is 1614 * not included in the name. Can be null to require an 1615 * explicit type. 1616 * @param defPackage Optional default package to find, if "package:" is 1617 * not included in the name. Can be null to require an 1618 * explicit package. 1619 * 1620 * @return int The associated resource identifier. Returns 0 if no such 1621 * resource was found. (0 is not a valid resource ID.) 1622 */ 1623 public int getIdentifier(String name, String defType, String defPackage) { 1624 try { 1625 return Integer.parseInt(name); 1626 } catch (Exception e) { 1627 // Ignore 1628 } 1629 return mAssets.getResourceIdentifier(name, defType, defPackage); 1630 } 1631 1632 /** 1633 * Return the full name for a given resource identifier. This name is 1634 * a single string of the form "package:type/entry". 1635 * 1636 * @param resid The resource identifier whose name is to be retrieved. 1637 * 1638 * @return A string holding the name of the resource. 1639 * 1640 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1641 * 1642 * @see #getResourcePackageName 1643 * @see #getResourceTypeName 1644 * @see #getResourceEntryName 1645 */ 1646 public String getResourceName(int resid) throws NotFoundException { 1647 String str = mAssets.getResourceName(resid); 1648 if (str != null) return str; 1649 throw new NotFoundException("Unable to find resource ID #0x" 1650 + Integer.toHexString(resid)); 1651 } 1652 1653 /** 1654 * Return the package name for a given resource identifier. 1655 * 1656 * @param resid The resource identifier whose package name is to be 1657 * retrieved. 1658 * 1659 * @return A string holding the package name of the resource. 1660 * 1661 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1662 * 1663 * @see #getResourceName 1664 */ 1665 public String getResourcePackageName(int resid) throws NotFoundException { 1666 String str = mAssets.getResourcePackageName(resid); 1667 if (str != null) return str; 1668 throw new NotFoundException("Unable to find resource ID #0x" 1669 + Integer.toHexString(resid)); 1670 } 1671 1672 /** 1673 * Return the type name for a given resource identifier. 1674 * 1675 * @param resid The resource identifier whose type name is to be 1676 * retrieved. 1677 * 1678 * @return A string holding the type name of the resource. 1679 * 1680 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1681 * 1682 * @see #getResourceName 1683 */ 1684 public String getResourceTypeName(int resid) throws NotFoundException { 1685 String str = mAssets.getResourceTypeName(resid); 1686 if (str != null) return str; 1687 throw new NotFoundException("Unable to find resource ID #0x" 1688 + Integer.toHexString(resid)); 1689 } 1690 1691 /** 1692 * Return the entry name for a given resource identifier. 1693 * 1694 * @param resid The resource identifier whose entry name is to be 1695 * retrieved. 1696 * 1697 * @return A string holding the entry name of the resource. 1698 * 1699 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1700 * 1701 * @see #getResourceName 1702 */ 1703 public String getResourceEntryName(int resid) throws NotFoundException { 1704 String str = mAssets.getResourceEntryName(resid); 1705 if (str != null) return str; 1706 throw new NotFoundException("Unable to find resource ID #0x" 1707 + Integer.toHexString(resid)); 1708 } 1709 1710 /** 1711 * Parse a series of {@link android.R.styleable#Extra <extra>} tags from 1712 * an XML file. You call this when you are at the parent tag of the 1713 * extra tags, and it will return once all of the child tags have been parsed. 1714 * This will call {@link #parseBundleExtra} for each extra tag encountered. 1715 * 1716 * @param parser The parser from which to retrieve the extras. 1717 * @param outBundle A Bundle in which to place all parsed extras. 1718 * @throws XmlPullParserException 1719 * @throws IOException 1720 */ 1721 public void parseBundleExtras(XmlResourceParser parser, Bundle outBundle) 1722 throws XmlPullParserException, IOException { 1723 int outerDepth = parser.getDepth(); 1724 int type; 1725 while ((type=parser.next()) != XmlPullParser.END_DOCUMENT 1726 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 1727 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 1728 continue; 1729 } 1730 1731 String nodeName = parser.getName(); 1732 if (nodeName.equals("extra")) { 1733 parseBundleExtra("extra", parser, outBundle); 1734 XmlUtils.skipCurrentTag(parser); 1735 1736 } else { 1737 XmlUtils.skipCurrentTag(parser); 1738 } 1739 } 1740 } 1741 1742 /** 1743 * Parse a name/value pair out of an XML tag holding that data. The 1744 * AttributeSet must be holding the data defined by 1745 * {@link android.R.styleable#Extra}. The following value types are supported: 1746 * <ul> 1747 * <li> {@link TypedValue#TYPE_STRING}: 1748 * {@link Bundle#putCharSequence Bundle.putCharSequence()} 1749 * <li> {@link TypedValue#TYPE_INT_BOOLEAN}: 1750 * {@link Bundle#putCharSequence Bundle.putBoolean()} 1751 * <li> {@link TypedValue#TYPE_FIRST_INT}-{@link TypedValue#TYPE_LAST_INT}: 1752 * {@link Bundle#putCharSequence Bundle.putBoolean()} 1753 * <li> {@link TypedValue#TYPE_FLOAT}: 1754 * {@link Bundle#putCharSequence Bundle.putFloat()} 1755 * </ul> 1756 * 1757 * @param tagName The name of the tag these attributes come from; this is 1758 * only used for reporting error messages. 1759 * @param attrs The attributes from which to retrieve the name/value pair. 1760 * @param outBundle The Bundle in which to place the parsed value. 1761 * @throws XmlPullParserException If the attributes are not valid. 1762 */ 1763 public void parseBundleExtra(String tagName, AttributeSet attrs, 1764 Bundle outBundle) throws XmlPullParserException { 1765 TypedArray sa = obtainAttributes(attrs, 1766 com.android.internal.R.styleable.Extra); 1767 1768 String name = sa.getString( 1769 com.android.internal.R.styleable.Extra_name); 1770 if (name == null) { 1771 sa.recycle(); 1772 throw new XmlPullParserException("<" + tagName 1773 + "> requires an android:name attribute at " 1774 + attrs.getPositionDescription()); 1775 } 1776 1777 TypedValue v = sa.peekValue( 1778 com.android.internal.R.styleable.Extra_value); 1779 if (v != null) { 1780 if (v.type == TypedValue.TYPE_STRING) { 1781 CharSequence cs = v.coerceToString(); 1782 outBundle.putCharSequence(name, cs); 1783 } else if (v.type == TypedValue.TYPE_INT_BOOLEAN) { 1784 outBundle.putBoolean(name, v.data != 0); 1785 } else if (v.type >= TypedValue.TYPE_FIRST_INT 1786 && v.type <= TypedValue.TYPE_LAST_INT) { 1787 outBundle.putInt(name, v.data); 1788 } else if (v.type == TypedValue.TYPE_FLOAT) { 1789 outBundle.putFloat(name, v.getFloat()); 1790 } else { 1791 sa.recycle(); 1792 throw new XmlPullParserException("<" + tagName 1793 + "> only supports string, integer, float, color, and boolean at " 1794 + attrs.getPositionDescription()); 1795 } 1796 } else { 1797 sa.recycle(); 1798 throw new XmlPullParserException("<" + tagName 1799 + "> requires an android:value or android:resource attribute at " 1800 + attrs.getPositionDescription()); 1801 } 1802 1803 sa.recycle(); 1804 } 1805 1806 /** 1807 * Retrieve underlying AssetManager storage for these resources. 1808 */ 1809 public final AssetManager getAssets() { 1810 return mAssets; 1811 } 1812 1813 /** 1814 * Call this to remove all cached loaded layout resources from the 1815 * Resources object. Only intended for use with performance testing 1816 * tools. 1817 */ 1818 public final void flushLayoutCache() { 1819 synchronized (mCachedXmlBlockIds) { 1820 // First see if this block is in our cache. 1821 final int num = mCachedXmlBlockIds.length; 1822 for (int i=0; i<num; i++) { 1823 mCachedXmlBlockIds[i] = -0; 1824 XmlBlock oldBlock = mCachedXmlBlocks[i]; 1825 if (oldBlock != null) { 1826 oldBlock.close(); 1827 } 1828 mCachedXmlBlocks[i] = null; 1829 } 1830 } 1831 } 1832 1833 /** 1834 * Start preloading of resource data using this Resources object. Only 1835 * for use by the zygote process for loading common system resources. 1836 * {@hide} 1837 */ 1838 public final void startPreloading() { 1839 synchronized (mSync) { 1840 if (mPreloaded) { 1841 throw new IllegalStateException("Resources already preloaded"); 1842 } 1843 mPreloaded = true; 1844 mPreloading = true; 1845 } 1846 } 1847 1848 /** 1849 * Called by zygote when it is done preloading resources, to change back 1850 * to normal Resources operation. 1851 */ 1852 public final void finishPreloading() { 1853 if (mPreloading) { 1854 mPreloading = false; 1855 flushLayoutCache(); 1856 } 1857 } 1858 1859 /*package*/ Drawable loadDrawable(TypedValue value, int id) 1860 throws NotFoundException { 1861 1862 if (TRACE_FOR_PRELOAD) { 1863 // Log only framework resources 1864 if ((id >>> 24) == 0x1) { 1865 final String name = getResourceName(id); 1866 if (name != null) android.util.Log.d("PreloadDrawable", name); 1867 } 1868 } 1869 1870 final long key = (((long) value.assetCookie) << 32) | value.data; 1871 boolean isColorDrawable = false; 1872 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 1873 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 1874 isColorDrawable = true; 1875 } 1876 Drawable dr = getCachedDrawable(isColorDrawable ? mColorDrawableCache : mDrawableCache, key); 1877 1878 if (dr != null) { 1879 return dr; 1880 } 1881 1882 Drawable.ConstantState cs = isColorDrawable ? sPreloadedColorDrawables.get(key) : sPreloadedDrawables.get(key); 1883 if (cs != null) { 1884 dr = cs.newDrawable(this); 1885 } else { 1886 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 1887 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 1888 dr = new ColorDrawable(value.data); 1889 } 1890 1891 if (dr == null) { 1892 if (value.string == null) { 1893 throw new NotFoundException( 1894 "Resource is not a Drawable (color or path): " + value); 1895 } 1896 1897 String file = value.string.toString(); 1898 1899 if (DEBUG_LOAD) Log.v(TAG, "Loading drawable for cookie " 1900 + value.assetCookie + ": " + file); 1901 1902 if (file.endsWith(".xml")) { 1903 try { 1904 XmlResourceParser rp = loadXmlResourceParser( 1905 file, id, value.assetCookie, "drawable"); 1906 dr = Drawable.createFromXml(this, rp); 1907 rp.close(); 1908 } catch (Exception e) { 1909 NotFoundException rnf = new NotFoundException( 1910 "File " + file + " from drawable resource ID #0x" 1911 + Integer.toHexString(id)); 1912 rnf.initCause(e); 1913 throw rnf; 1914 } 1915 1916 } else { 1917 try { 1918 InputStream is = mAssets.openNonAsset( 1919 value.assetCookie, file, AssetManager.ACCESS_STREAMING); 1920 // System.out.println("Opened file " + file + ": " + is); 1921 dr = Drawable.createFromResourceStream(this, value, is, 1922 file, null); 1923 is.close(); 1924 // System.out.println("Created stream: " + dr); 1925 } catch (Exception e) { 1926 NotFoundException rnf = new NotFoundException( 1927 "File " + file + " from drawable resource ID #0x" 1928 + Integer.toHexString(id)); 1929 rnf.initCause(e); 1930 throw rnf; 1931 } 1932 } 1933 } 1934 } 1935 1936 if (dr != null) { 1937 dr.setChangingConfigurations(value.changingConfigurations); 1938 cs = dr.getConstantState(); 1939 if (cs != null) { 1940 if (mPreloading) { 1941 if (isColorDrawable) { 1942 sPreloadedColorDrawables.put(key, cs); 1943 } else { 1944 sPreloadedDrawables.put(key, cs); 1945 } 1946 } else { 1947 synchronized (mTmpValue) { 1948 //Log.i(TAG, "Saving cached drawable @ #" + 1949 // Integer.toHexString(key.intValue()) 1950 // + " in " + this + ": " + cs); 1951 if (isColorDrawable) { 1952 mColorDrawableCache.put(key, new WeakReference<Drawable.ConstantState>(cs)); 1953 } else { 1954 mDrawableCache.put(key, new WeakReference<Drawable.ConstantState>(cs)); 1955 } 1956 } 1957 } 1958 } 1959 } 1960 1961 return dr; 1962 } 1963 1964 private Drawable getCachedDrawable( 1965 LongSparseArray<WeakReference<ConstantState>> drawableCache, 1966 long key) { 1967 synchronized (mTmpValue) { 1968 WeakReference<Drawable.ConstantState> wr = drawableCache.get(key); 1969 if (wr != null) { // we have the key 1970 Drawable.ConstantState entry = wr.get(); 1971 if (entry != null) { 1972 //Log.i(TAG, "Returning cached drawable @ #" + 1973 // Integer.toHexString(((Integer)key).intValue()) 1974 // + " in " + this + ": " + entry); 1975 return entry.newDrawable(this); 1976 } 1977 else { // our entry has been purged 1978 drawableCache.delete(key); 1979 } 1980 } 1981 } 1982 return null; 1983 } 1984 1985 /*package*/ ColorStateList loadColorStateList(TypedValue value, int id) 1986 throws NotFoundException { 1987 if (TRACE_FOR_PRELOAD) { 1988 // Log only framework resources 1989 if ((id >>> 24) == 0x1) { 1990 final String name = getResourceName(id); 1991 if (name != null) android.util.Log.d("PreloadColorStateList", name); 1992 } 1993 } 1994 1995 final int key = (value.assetCookie << 24) | value.data; 1996 1997 ColorStateList csl; 1998 1999 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 2000 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2001 2002 csl = mPreloadedColorStateLists.get(key); 2003 if (csl != null) { 2004 return csl; 2005 } 2006 2007 csl = ColorStateList.valueOf(value.data); 2008 if (mPreloading) { 2009 mPreloadedColorStateLists.put(key, csl); 2010 } 2011 2012 return csl; 2013 } 2014 2015 csl = getCachedColorStateList(key); 2016 if (csl != null) { 2017 return csl; 2018 } 2019 2020 csl = mPreloadedColorStateLists.get(key); 2021 if (csl != null) { 2022 return csl; 2023 } 2024 2025 if (value.string == null) { 2026 throw new NotFoundException( 2027 "Resource is not a ColorStateList (color or path): " + value); 2028 } 2029 2030 String file = value.string.toString(); 2031 2032 if (file.endsWith(".xml")) { 2033 try { 2034 XmlResourceParser rp = loadXmlResourceParser( 2035 file, id, value.assetCookie, "colorstatelist"); 2036 csl = ColorStateList.createFromXml(this, rp); 2037 rp.close(); 2038 } catch (Exception e) { 2039 NotFoundException rnf = new NotFoundException( 2040 "File " + file + " from color state list resource ID #0x" 2041 + Integer.toHexString(id)); 2042 rnf.initCause(e); 2043 throw rnf; 2044 } 2045 } else { 2046 throw new NotFoundException( 2047 "File " + file + " from drawable resource ID #0x" 2048 + Integer.toHexString(id) + ": .xml extension required"); 2049 } 2050 2051 if (csl != null) { 2052 if (mPreloading) { 2053 mPreloadedColorStateLists.put(key, csl); 2054 } else { 2055 synchronized (mTmpValue) { 2056 //Log.i(TAG, "Saving cached color state list @ #" + 2057 // Integer.toHexString(key.intValue()) 2058 // + " in " + this + ": " + csl); 2059 mColorStateListCache.put( 2060 key, new WeakReference<ColorStateList>(csl)); 2061 } 2062 } 2063 } 2064 2065 return csl; 2066 } 2067 2068 private ColorStateList getCachedColorStateList(int key) { 2069 synchronized (mTmpValue) { 2070 WeakReference<ColorStateList> wr = mColorStateListCache.get(key); 2071 if (wr != null) { // we have the key 2072 ColorStateList entry = wr.get(); 2073 if (entry != null) { 2074 //Log.i(TAG, "Returning cached color state list @ #" + 2075 // Integer.toHexString(((Integer)key).intValue()) 2076 // + " in " + this + ": " + entry); 2077 return entry; 2078 } 2079 else { // our entry has been purged 2080 mColorStateListCache.delete(key); 2081 } 2082 } 2083 } 2084 return null; 2085 } 2086 2087 /*package*/ XmlResourceParser loadXmlResourceParser(int id, String type) 2088 throws NotFoundException { 2089 synchronized (mTmpValue) { 2090 TypedValue value = mTmpValue; 2091 getValue(id, value, true); 2092 if (value.type == TypedValue.TYPE_STRING) { 2093 return loadXmlResourceParser(value.string.toString(), id, 2094 value.assetCookie, type); 2095 } 2096 throw new NotFoundException( 2097 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 2098 + Integer.toHexString(value.type) + " is not valid"); 2099 } 2100 } 2101 2102 /*package*/ XmlResourceParser loadXmlResourceParser(String file, int id, 2103 int assetCookie, String type) throws NotFoundException { 2104 if (id != 0) { 2105 try { 2106 // These may be compiled... 2107 synchronized (mCachedXmlBlockIds) { 2108 // First see if this block is in our cache. 2109 final int num = mCachedXmlBlockIds.length; 2110 for (int i=0; i<num; i++) { 2111 if (mCachedXmlBlockIds[i] == id) { 2112 //System.out.println("**** REUSING XML BLOCK! id=" 2113 // + id + ", index=" + i); 2114 return mCachedXmlBlocks[i].newParser(); 2115 } 2116 } 2117 2118 // Not in the cache, create a new block and put it at 2119 // the next slot in the cache. 2120 XmlBlock block = mAssets.openXmlBlockAsset( 2121 assetCookie, file); 2122 if (block != null) { 2123 int pos = mLastCachedXmlBlockIndex+1; 2124 if (pos >= num) pos = 0; 2125 mLastCachedXmlBlockIndex = pos; 2126 XmlBlock oldBlock = mCachedXmlBlocks[pos]; 2127 if (oldBlock != null) { 2128 oldBlock.close(); 2129 } 2130 mCachedXmlBlockIds[pos] = id; 2131 mCachedXmlBlocks[pos] = block; 2132 //System.out.println("**** CACHING NEW XML BLOCK! id=" 2133 // + id + ", index=" + pos); 2134 return block.newParser(); 2135 } 2136 } 2137 } catch (Exception e) { 2138 NotFoundException rnf = new NotFoundException( 2139 "File " + file + " from xml type " + type + " resource ID #0x" 2140 + Integer.toHexString(id)); 2141 rnf.initCause(e); 2142 throw rnf; 2143 } 2144 } 2145 2146 throw new NotFoundException( 2147 "File " + file + " from xml type " + type + " resource ID #0x" 2148 + Integer.toHexString(id)); 2149 } 2150 2151 private TypedArray getCachedStyledAttributes(int len) { 2152 synchronized (mTmpValue) { 2153 TypedArray attrs = mCachedStyledAttributes; 2154 if (attrs != null) { 2155 mCachedStyledAttributes = null; 2156 2157 attrs.mLength = len; 2158 int fullLen = len * AssetManager.STYLE_NUM_ENTRIES; 2159 if (attrs.mData.length >= fullLen) { 2160 return attrs; 2161 } 2162 attrs.mData = new int[fullLen]; 2163 attrs.mIndices = new int[1+len]; 2164 return attrs; 2165 } 2166 return new TypedArray(this, 2167 new int[len*AssetManager.STYLE_NUM_ENTRIES], 2168 new int[1+len], len); 2169 } 2170 } 2171 2172 private Resources() { 2173 mAssets = AssetManager.getSystem(); 2174 // NOTE: Intentionally leaving this uninitialized (all values set 2175 // to zero), so that anyone who tries to do something that requires 2176 // metrics will get a very wrong value. 2177 mConfiguration.setToDefaults(); 2178 mMetrics.setToDefaults(); 2179 updateConfiguration(null, null); 2180 mAssets.ensureStringBlocks(); 2181 mCompatibilityInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 2182 } 2183} 2184