Resources.java revision 3904d03dd01dcd43c446744e44b34615825d9679
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.os.SystemProperties; 32import android.util.AttributeSet; 33import android.util.DisplayMetrics; 34import android.util.Log; 35import android.util.SparseArray; 36import android.util.TypedValue; 37import android.util.LongSparseArray; 38import android.view.Display; 39 40import java.io.IOException; 41import java.io.InputStream; 42import java.lang.ref.WeakReference; 43import java.util.Locale; 44 45import libcore.icu.NativePluralRules; 46 47/** 48 * Class for accessing an application's resources. This sits on top of the 49 * asset manager of the application (accessible through {@link #getAssets}) and 50 * provides a high-level API for getting typed data from the assets. 51 * 52 * <p>The Android resource system keeps track of all non-code assets associated with an 53 * application. You can use this class to access your application's resources. You can generally 54 * acquire the {@link android.content.res.Resources} instance associated with your application 55 * with {@link android.content.Context#getResources getResources()}.</p> 56 * 57 * <p>The Android SDK tools compile your application's resources into the application binary 58 * at build time. To use a resource, you must install it correctly in the source tree (inside 59 * your project's {@code res/} directory) and build your application. As part of the build 60 * process, the SDK tools generate symbols for each resource, which you can use in your application 61 * code to access the resources.</p> 62 * 63 * <p>Using application resources makes it easy to update various characteristics of your 64 * application without modifying code, and—by providing sets of alternative 65 * resources—enables you to optimize your application for a variety of device configurations 66 * (such as for different languages and screen sizes). This is an important aspect of developing 67 * Android applications that are compatible on different types of devices.</p> 68 * 69 * <p>For more information about using resources, see the documentation about <a 70 * href="{@docRoot}guide/topics/resources/index.html">Application Resources</a>.</p> 71 */ 72public class Resources { 73 static final String TAG = "Resources"; 74 private static final boolean DEBUG_LOAD = false; 75 private static final boolean DEBUG_CONFIG = false; 76 private static final boolean TRACE_FOR_PRELOAD = false; 77 78 private static final int ID_OTHER = 0x01000004; 79 80 private static final Object mSync = new Object(); 81 private static Resources mSystem = null; 82 83 // Information about preloaded resources. Note that they are not 84 // protected by a lock, because while preloading in zygote we are all 85 // single-threaded, and after that these are immutable. 86 private static final LongSparseArray<Drawable.ConstantState> sPreloadedDrawables 87 = new LongSparseArray<Drawable.ConstantState>(); 88 private static final SparseArray<ColorStateList> mPreloadedColorStateLists 89 = new SparseArray<ColorStateList>(); 90 private static final LongSparseArray<Drawable.ConstantState> sPreloadedColorDrawables 91 = new LongSparseArray<Drawable.ConstantState>(); 92 private static boolean mPreloaded; 93 94 /*package*/ final TypedValue mTmpValue = new TypedValue(); 95 /*package*/ final Configuration mTmpConfig = new Configuration(); 96 97 // These are protected by the mTmpValue lock. 98 private final LongSparseArray<WeakReference<Drawable.ConstantState> > mDrawableCache 99 = new LongSparseArray<WeakReference<Drawable.ConstantState> >(); 100 private final SparseArray<WeakReference<ColorStateList> > mColorStateListCache 101 = new SparseArray<WeakReference<ColorStateList> >(); 102 private final LongSparseArray<WeakReference<Drawable.ConstantState> > mColorDrawableCache 103 = new LongSparseArray<WeakReference<Drawable.ConstantState> >(); 104 private boolean mPreloading; 105 106 /*package*/ TypedArray mCachedStyledAttributes = null; 107 108 private int mLastCachedXmlBlockIndex = -1; 109 private final int[] mCachedXmlBlockIds = { 0, 0, 0, 0 }; 110 private final XmlBlock[] mCachedXmlBlocks = new XmlBlock[4]; 111 112 /*package*/ final AssetManager mAssets; 113 private final Configuration mConfiguration = new Configuration(); 114 /*package*/ final DisplayMetrics mMetrics = new DisplayMetrics(); 115 private NativePluralRules mPluralRule; 116 117 private CompatibilityInfo mCompatibilityInfo; 118 119 private static final LongSparseArray<Object> EMPTY_ARRAY = new LongSparseArray<Object>(0) { 120 @Override 121 public void put(long k, Object o) { 122 throw new UnsupportedOperationException(); 123 } 124 @Override 125 public void append(long k, Object o) { 126 throw new UnsupportedOperationException(); 127 } 128 }; 129 130 @SuppressWarnings("unchecked") 131 private static <T> LongSparseArray<T> emptySparseArray() { 132 return (LongSparseArray<T>) EMPTY_ARRAY; 133 } 134 135 /** @hide */ 136 public static int selectDefaultTheme(int curTheme, int targetSdkVersion) { 137 return selectSystemTheme(curTheme, targetSdkVersion, 138 com.android.internal.R.style.Theme, com.android.internal.R.style.Theme_Holo); 139 } 140 141 /** @hide */ 142 public static int selectSystemTheme(int curTheme, int targetSdkVersion, int orig, int holo) { 143 if (curTheme != 0) { 144 return curTheme; 145 } 146 if (targetSdkVersion < Build.VERSION_CODES.HONEYCOMB) { 147 return orig; 148 } 149 return holo; 150 } 151 152 /** 153 * This exception is thrown by the resource APIs when a requested resource 154 * can not be found. 155 */ 156 public static class NotFoundException extends RuntimeException { 157 public NotFoundException() { 158 } 159 160 public NotFoundException(String name) { 161 super(name); 162 } 163 } 164 165 /** 166 * Create a new Resources object on top of an existing set of assets in an 167 * AssetManager. 168 * 169 * @param assets Previously created AssetManager. 170 * @param metrics Current display metrics to consider when 171 * selecting/computing resource values. 172 * @param config Desired device configuration to consider when 173 * selecting/computing resource values (optional). 174 */ 175 public Resources(AssetManager assets, DisplayMetrics metrics, 176 Configuration config) { 177 this(assets, metrics, config, (CompatibilityInfo) null); 178 } 179 180 /** 181 * Creates a new Resources object with CompatibilityInfo. 182 * 183 * @param assets Previously created AssetManager. 184 * @param metrics Current display metrics to consider when 185 * selecting/computing resource values. 186 * @param config Desired device configuration to consider when 187 * selecting/computing resource values (optional). 188 * @param compInfo this resource's compatibility info. It will use the default compatibility 189 * info when it's null. 190 * @hide 191 */ 192 public Resources(AssetManager assets, DisplayMetrics metrics, 193 Configuration config, CompatibilityInfo compInfo) { 194 mAssets = assets; 195 mMetrics.setToDefaults(); 196 mCompatibilityInfo = compInfo; 197 updateConfiguration(config, metrics); 198 assets.ensureStringBlocks(); 199 } 200 201 /** 202 * Return a global shared Resources object that provides access to only 203 * system resources (no application resources), and is not configured for 204 * the current screen (can not use dimension units, does not change based 205 * on orientation, etc). 206 */ 207 public static Resources getSystem() { 208 synchronized (mSync) { 209 Resources ret = mSystem; 210 if (ret == null) { 211 ret = new Resources(); 212 mSystem = ret; 213 } 214 215 return ret; 216 } 217 } 218 219 /** 220 * Return the string value associated with a particular resource ID. The 221 * returned object will be a String if this is a plain string; it will be 222 * some other type of CharSequence if it is styled. 223 * {@more} 224 * 225 * @param id The desired resource identifier, as generated by the aapt 226 * tool. This integer encodes the package, type, and resource 227 * entry. The value 0 is an invalid identifier. 228 * 229 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 230 * 231 * @return CharSequence The string data associated with the resource, plus 232 * possibly styled text information. 233 */ 234 public CharSequence getText(int id) throws NotFoundException { 235 CharSequence res = mAssets.getResourceText(id); 236 if (res != null) { 237 return res; 238 } 239 throw new NotFoundException("String resource ID #0x" 240 + Integer.toHexString(id)); 241 } 242 243 /** 244 * Return the character sequence associated with a particular resource ID for a particular 245 * numerical quantity. 246 * 247 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 248 * Resources</a> for more on quantity strings. 249 * 250 * @param id The desired resource identifier, as generated by the aapt 251 * tool. This integer encodes the package, type, and resource 252 * entry. The value 0 is an invalid identifier. 253 * @param quantity The number used to get the correct string for the current language's 254 * plural rules. 255 * 256 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 257 * 258 * @return CharSequence The string data associated with the resource, plus 259 * possibly styled text information. 260 */ 261 public CharSequence getQuantityText(int id, int quantity) throws NotFoundException { 262 NativePluralRules rule = getPluralRule(); 263 CharSequence res = mAssets.getResourceBagText(id, 264 attrForQuantityCode(rule.quantityForInt(quantity))); 265 if (res != null) { 266 return res; 267 } 268 res = mAssets.getResourceBagText(id, ID_OTHER); 269 if (res != null) { 270 return res; 271 } 272 throw new NotFoundException("Plural resource ID #0x" + Integer.toHexString(id) 273 + " quantity=" + quantity 274 + " item=" + stringForQuantityCode(rule.quantityForInt(quantity))); 275 } 276 277 private NativePluralRules getPluralRule() { 278 synchronized (mSync) { 279 if (mPluralRule == null) { 280 mPluralRule = NativePluralRules.forLocale(mConfiguration.locale); 281 } 282 return mPluralRule; 283 } 284 } 285 286 private static int attrForQuantityCode(int quantityCode) { 287 switch (quantityCode) { 288 case NativePluralRules.ZERO: return 0x01000005; 289 case NativePluralRules.ONE: return 0x01000006; 290 case NativePluralRules.TWO: return 0x01000007; 291 case NativePluralRules.FEW: return 0x01000008; 292 case NativePluralRules.MANY: return 0x01000009; 293 default: return ID_OTHER; 294 } 295 } 296 297 private static String stringForQuantityCode(int quantityCode) { 298 switch (quantityCode) { 299 case NativePluralRules.ZERO: return "zero"; 300 case NativePluralRules.ONE: return "one"; 301 case NativePluralRules.TWO: return "two"; 302 case NativePluralRules.FEW: return "few"; 303 case NativePluralRules.MANY: return "many"; 304 default: return "other"; 305 } 306 } 307 308 /** 309 * Return the string value associated with a particular resource ID. It 310 * will be stripped of any styled text information. 311 * {@more} 312 * 313 * @param id The desired resource identifier, as generated by the aapt 314 * tool. This integer encodes the package, type, and resource 315 * entry. The value 0 is an invalid identifier. 316 * 317 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 318 * 319 * @return String The string data associated with the resource, 320 * stripped of styled text information. 321 */ 322 public String getString(int id) throws NotFoundException { 323 CharSequence res = getText(id); 324 if (res != null) { 325 return res.toString(); 326 } 327 throw new NotFoundException("String resource ID #0x" 328 + Integer.toHexString(id)); 329 } 330 331 332 /** 333 * Return the string value associated with a particular resource ID, 334 * substituting the format arguments as defined in {@link java.util.Formatter} 335 * and {@link java.lang.String#format}. It will be stripped of any styled text 336 * information. 337 * {@more} 338 * 339 * @param id The desired resource identifier, as generated by the aapt 340 * tool. This integer encodes the package, type, and resource 341 * entry. The value 0 is an invalid identifier. 342 * 343 * @param formatArgs The format arguments that will be used for substitution. 344 * 345 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 346 * 347 * @return String The string data associated with the resource, 348 * stripped of styled text information. 349 */ 350 public String getString(int id, Object... formatArgs) throws NotFoundException { 351 String raw = getString(id); 352 return String.format(mConfiguration.locale, raw, formatArgs); 353 } 354 355 /** 356 * Return the string value associated with a particular resource ID for a particular 357 * numerical quantity, substituting the format arguments as defined in 358 * {@link java.util.Formatter} and {@link java.lang.String#format}. It will be 359 * stripped of any styled text information. 360 * {@more} 361 * 362 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 363 * Resources</a> for more on quantity strings. 364 * 365 * @param id The desired resource identifier, as generated by the aapt 366 * tool. This integer encodes the package, type, and resource 367 * entry. The value 0 is an invalid identifier. 368 * @param quantity The number used to get the correct string for the current language's 369 * plural rules. 370 * @param formatArgs The format arguments that will be used for substitution. 371 * 372 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 373 * 374 * @return String The string data associated with the resource, 375 * stripped of styled text information. 376 */ 377 public String getQuantityString(int id, int quantity, Object... formatArgs) 378 throws NotFoundException { 379 String raw = getQuantityText(id, quantity).toString(); 380 return String.format(mConfiguration.locale, raw, formatArgs); 381 } 382 383 /** 384 * Return the string value associated with a particular resource ID for a particular 385 * numerical quantity. 386 * 387 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 388 * Resources</a> for more on quantity strings. 389 * 390 * @param id The desired resource identifier, as generated by the aapt 391 * tool. This integer encodes the package, type, and resource 392 * entry. The value 0 is an invalid identifier. 393 * @param quantity The number used to get the correct string for the current language's 394 * plural rules. 395 * 396 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 397 * 398 * @return String The string data associated with the resource, 399 * stripped of styled text information. 400 */ 401 public String getQuantityString(int id, int quantity) throws NotFoundException { 402 return getQuantityText(id, quantity).toString(); 403 } 404 405 /** 406 * Return the string value associated with a particular resource ID. The 407 * returned object will be a String if this is a plain string; it will be 408 * some other type of CharSequence if it is styled. 409 * 410 * @param id The desired resource identifier, as generated by the aapt 411 * tool. This integer encodes the package, type, and resource 412 * entry. The value 0 is an invalid identifier. 413 * 414 * @param def The default CharSequence to return. 415 * 416 * @return CharSequence The string data associated with the resource, plus 417 * possibly styled text information, or def if id is 0 or not found. 418 */ 419 public CharSequence getText(int id, CharSequence def) { 420 CharSequence res = id != 0 ? mAssets.getResourceText(id) : null; 421 return res != null ? res : def; 422 } 423 424 /** 425 * Return the styled text array associated with a particular resource ID. 426 * 427 * @param id The desired resource identifier, as generated by the aapt 428 * tool. This integer encodes the package, type, and resource 429 * entry. The value 0 is an invalid identifier. 430 * 431 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 432 * 433 * @return The styled text array associated with the resource. 434 */ 435 public CharSequence[] getTextArray(int id) throws NotFoundException { 436 CharSequence[] res = mAssets.getResourceTextArray(id); 437 if (res != null) { 438 return res; 439 } 440 throw new NotFoundException("Text array resource ID #0x" 441 + Integer.toHexString(id)); 442 } 443 444 /** 445 * Return the string array associated with a particular resource ID. 446 * 447 * @param id The desired resource identifier, as generated by the aapt 448 * tool. This integer encodes the package, type, and resource 449 * entry. The value 0 is an invalid identifier. 450 * 451 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 452 * 453 * @return The string array associated with the resource. 454 */ 455 public String[] getStringArray(int id) throws NotFoundException { 456 String[] res = mAssets.getResourceStringArray(id); 457 if (res != null) { 458 return res; 459 } 460 throw new NotFoundException("String array resource ID #0x" 461 + Integer.toHexString(id)); 462 } 463 464 /** 465 * Return the int array associated with a particular resource ID. 466 * 467 * @param id The desired resource identifier, as generated by the aapt 468 * tool. This integer encodes the package, type, and resource 469 * entry. The value 0 is an invalid identifier. 470 * 471 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 472 * 473 * @return The int array associated with the resource. 474 */ 475 public int[] getIntArray(int id) throws NotFoundException { 476 int[] res = mAssets.getArrayIntResource(id); 477 if (res != null) { 478 return res; 479 } 480 throw new NotFoundException("Int array resource ID #0x" 481 + Integer.toHexString(id)); 482 } 483 484 /** 485 * Return an array of heterogeneous values. 486 * 487 * @param id The desired resource identifier, as generated by the aapt 488 * tool. This integer encodes the package, type, and resource 489 * entry. The value 0 is an invalid identifier. 490 * 491 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 492 * 493 * @return Returns a TypedArray holding an array of the array values. 494 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 495 * when done with it. 496 */ 497 public TypedArray obtainTypedArray(int id) throws NotFoundException { 498 int len = mAssets.getArraySize(id); 499 if (len < 0) { 500 throw new NotFoundException("Array resource ID #0x" 501 + Integer.toHexString(id)); 502 } 503 504 TypedArray array = getCachedStyledAttributes(len); 505 array.mLength = mAssets.retrieveArray(id, array.mData); 506 array.mIndices[0] = 0; 507 508 return array; 509 } 510 511 /** 512 * Retrieve a dimensional for a particular resource ID. Unit 513 * conversions are based on the current {@link DisplayMetrics} associated 514 * with the resources. 515 * 516 * @param id The desired resource identifier, as generated by the aapt 517 * tool. This integer encodes the package, type, and resource 518 * entry. The value 0 is an invalid identifier. 519 * 520 * @return Resource dimension value multiplied by the appropriate 521 * metric. 522 * 523 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 524 * 525 * @see #getDimensionPixelOffset 526 * @see #getDimensionPixelSize 527 */ 528 public float getDimension(int id) throws NotFoundException { 529 synchronized (mTmpValue) { 530 TypedValue value = mTmpValue; 531 getValue(id, value, true); 532 if (value.type == TypedValue.TYPE_DIMENSION) { 533 return TypedValue.complexToDimension(value.data, mMetrics); 534 } 535 throw new NotFoundException( 536 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 537 + Integer.toHexString(value.type) + " is not valid"); 538 } 539 } 540 541 /** 542 * Retrieve a dimensional for a particular resource ID for use 543 * as an offset in raw pixels. This is the same as 544 * {@link #getDimension}, except the returned value is converted to 545 * integer pixels for you. An offset conversion involves simply 546 * truncating the base value to an integer. 547 * 548 * @param id The desired resource identifier, as generated by the aapt 549 * tool. This integer encodes the package, type, and resource 550 * entry. The value 0 is an invalid identifier. 551 * 552 * @return Resource dimension value multiplied by the appropriate 553 * metric and truncated to integer pixels. 554 * 555 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 556 * 557 * @see #getDimension 558 * @see #getDimensionPixelSize 559 */ 560 public int getDimensionPixelOffset(int id) throws NotFoundException { 561 synchronized (mTmpValue) { 562 TypedValue value = mTmpValue; 563 getValue(id, value, true); 564 if (value.type == TypedValue.TYPE_DIMENSION) { 565 return TypedValue.complexToDimensionPixelOffset( 566 value.data, mMetrics); 567 } 568 throw new NotFoundException( 569 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 570 + Integer.toHexString(value.type) + " is not valid"); 571 } 572 } 573 574 /** 575 * Retrieve a dimensional for a particular resource ID for use 576 * as a size in raw pixels. This is the same as 577 * {@link #getDimension}, except the returned value is converted to 578 * integer pixels for use as a size. A size conversion involves 579 * rounding the base value, and ensuring that a non-zero base value 580 * is at least one pixel in size. 581 * 582 * @param id The desired resource identifier, as generated by the aapt 583 * tool. This integer encodes the package, type, and resource 584 * entry. The value 0 is an invalid identifier. 585 * 586 * @return Resource dimension value multiplied by the appropriate 587 * metric and truncated to integer pixels. 588 * 589 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 590 * 591 * @see #getDimension 592 * @see #getDimensionPixelOffset 593 */ 594 public int getDimensionPixelSize(int id) throws NotFoundException { 595 synchronized (mTmpValue) { 596 TypedValue value = mTmpValue; 597 getValue(id, value, true); 598 if (value.type == TypedValue.TYPE_DIMENSION) { 599 return TypedValue.complexToDimensionPixelSize( 600 value.data, mMetrics); 601 } 602 throw new NotFoundException( 603 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 604 + Integer.toHexString(value.type) + " is not valid"); 605 } 606 } 607 608 /** 609 * Retrieve a fractional unit for a particular resource ID. 610 * 611 * @param id The desired resource identifier, as generated by the aapt 612 * tool. This integer encodes the package, type, and resource 613 * entry. The value 0 is an invalid identifier. 614 * @param base The base value of this fraction. In other words, a 615 * standard fraction is multiplied by this value. 616 * @param pbase The parent base value of this fraction. In other 617 * words, a parent fraction (nn%p) is multiplied by this 618 * value. 619 * 620 * @return Attribute fractional value multiplied by the appropriate 621 * base value. 622 * 623 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 624 */ 625 public float getFraction(int id, int base, int pbase) { 626 synchronized (mTmpValue) { 627 TypedValue value = mTmpValue; 628 getValue(id, value, true); 629 if (value.type == TypedValue.TYPE_FRACTION) { 630 return TypedValue.complexToFraction(value.data, base, pbase); 631 } 632 throw new NotFoundException( 633 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 634 + Integer.toHexString(value.type) + " is not valid"); 635 } 636 } 637 638 /** 639 * Return a drawable object associated with a particular resource ID. 640 * Various types of objects will be returned depending on the underlying 641 * resource -- for example, a solid color, PNG image, scalable image, etc. 642 * The Drawable API hides these implementation details. 643 * 644 * @param id The desired resource identifier, as generated by the aapt 645 * tool. This integer encodes the package, type, and resource 646 * entry. The value 0 is an invalid identifier. 647 * 648 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 649 * 650 * @return Drawable An object that can be used to draw this resource. 651 */ 652 public Drawable getDrawable(int id) throws NotFoundException { 653 synchronized (mTmpValue) { 654 TypedValue value = mTmpValue; 655 getValue(id, value, true); 656 return loadDrawable(value, id); 657 } 658 } 659 660 /** 661 * Return a drawable object associated with a particular resource ID for the 662 * given screen density in DPI. This will set the drawable's density to be 663 * the device's density multiplied by the ratio of actual drawable density 664 * to requested density. This allows the drawable to be scaled up to the 665 * correct size if needed. Various types of objects will be returned 666 * depending on the underlying resource -- for example, a solid color, PNG 667 * image, scalable image, etc. The Drawable API hides these implementation 668 * details. 669 * 670 * @param id The desired resource identifier, as generated by the aapt tool. 671 * This integer encodes the package, type, and resource entry. 672 * The value 0 is an invalid identifier. 673 * @param density the desired screen density indicated by the resource as 674 * found in {@link DisplayMetrics}. 675 * @throws NotFoundException Throws NotFoundException if the given ID does 676 * not exist. 677 * @return Drawable An object that can be used to draw this resource. 678 * @hide 679 */ 680 public Drawable getDrawableForDensity(int id, int density) throws NotFoundException { 681 synchronized (mTmpValue) { 682 TypedValue value = mTmpValue; 683 getValueForDensity(id, density, value, true); 684 685 /* 686 * Pretend the requested density is actually the display density. If 687 * the drawable returned is not the requested density, then force it 688 * to be scaled later by dividing its density by the ratio of 689 * requested density to actual device density. Drawables that have 690 * undefined density or no density don't need to be handled here. 691 */ 692 if (value.density > 0 && value.density != TypedValue.DENSITY_NONE) { 693 if (value.density == density) { 694 value.density = DisplayMetrics.DENSITY_DEVICE; 695 } else { 696 value.density = (value.density * DisplayMetrics.DENSITY_DEVICE) / density; 697 } 698 } 699 700 return loadDrawable(value, id); 701 } 702 } 703 704 /** 705 * Return a movie object associated with the particular resource ID. 706 * @param id The desired resource identifier, as generated by the aapt 707 * tool. This integer encodes the package, type, and resource 708 * entry. The value 0 is an invalid identifier. 709 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 710 * 711 */ 712 public Movie getMovie(int id) throws NotFoundException { 713 InputStream is = openRawResource(id); 714 Movie movie = Movie.decodeStream(is); 715 try { 716 is.close(); 717 } 718 catch (java.io.IOException e) { 719 // don't care, since the return value is valid 720 } 721 return movie; 722 } 723 724 /** 725 * Return a color integer associated with a particular resource ID. 726 * If the resource holds a complex 727 * {@link android.content.res.ColorStateList}, then the default color from 728 * the set is returned. 729 * 730 * @param id The desired resource identifier, as generated by the aapt 731 * tool. This integer encodes the package, type, and resource 732 * entry. The value 0 is an invalid identifier. 733 * 734 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 735 * 736 * @return Returns a single color value in the form 0xAARRGGBB. 737 */ 738 public int getColor(int id) throws NotFoundException { 739 synchronized (mTmpValue) { 740 TypedValue value = mTmpValue; 741 getValue(id, value, true); 742 if (value.type >= TypedValue.TYPE_FIRST_INT 743 && value.type <= TypedValue.TYPE_LAST_INT) { 744 return value.data; 745 } else if (value.type == TypedValue.TYPE_STRING) { 746 ColorStateList csl = loadColorStateList(mTmpValue, id); 747 return csl.getDefaultColor(); 748 } 749 throw new NotFoundException( 750 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 751 + Integer.toHexString(value.type) + " is not valid"); 752 } 753 } 754 755 /** 756 * Return a color state list associated with a particular resource ID. The 757 * resource may contain either a single raw color value, or a complex 758 * {@link android.content.res.ColorStateList} holding multiple possible colors. 759 * 760 * @param id The desired resource identifier of a {@link ColorStateList}, 761 * as generated by the aapt tool. This integer encodes the package, type, and resource 762 * entry. The value 0 is an invalid identifier. 763 * 764 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 765 * 766 * @return Returns a ColorStateList object containing either a single 767 * solid color or multiple colors that can be selected based on a state. 768 */ 769 public ColorStateList getColorStateList(int id) throws NotFoundException { 770 synchronized (mTmpValue) { 771 TypedValue value = mTmpValue; 772 getValue(id, value, true); 773 return loadColorStateList(value, id); 774 } 775 } 776 777 /** 778 * Return a boolean associated with a particular resource ID. This can be 779 * used with any integral resource value, and will return true if it is 780 * non-zero. 781 * 782 * @param id The desired resource identifier, as generated by the aapt 783 * tool. This integer encodes the package, type, and resource 784 * entry. The value 0 is an invalid identifier. 785 * 786 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 787 * 788 * @return Returns the boolean value contained in the resource. 789 */ 790 public boolean getBoolean(int id) throws NotFoundException { 791 synchronized (mTmpValue) { 792 TypedValue value = mTmpValue; 793 getValue(id, value, true); 794 if (value.type >= TypedValue.TYPE_FIRST_INT 795 && value.type <= TypedValue.TYPE_LAST_INT) { 796 return value.data != 0; 797 } 798 throw new NotFoundException( 799 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 800 + Integer.toHexString(value.type) + " is not valid"); 801 } 802 } 803 804 /** 805 * Return an integer associated with a particular resource ID. 806 * 807 * @param id The desired resource identifier, as generated by the aapt 808 * tool. This integer encodes the package, type, and resource 809 * entry. The value 0 is an invalid identifier. 810 * 811 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 812 * 813 * @return Returns the integer value contained in the resource. 814 */ 815 public int getInteger(int id) throws NotFoundException { 816 synchronized (mTmpValue) { 817 TypedValue value = mTmpValue; 818 getValue(id, value, true); 819 if (value.type >= TypedValue.TYPE_FIRST_INT 820 && value.type <= TypedValue.TYPE_LAST_INT) { 821 return value.data; 822 } 823 throw new NotFoundException( 824 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 825 + Integer.toHexString(value.type) + " is not valid"); 826 } 827 } 828 829 /** 830 * Return an XmlResourceParser through which you can read a view layout 831 * description for the given resource ID. This parser has limited 832 * functionality -- in particular, you can't change its input, and only 833 * the high-level events are available. 834 * 835 * <p>This function is really a simple wrapper for calling 836 * {@link #getXml} with a layout resource. 837 * 838 * @param id The desired resource identifier, as generated by the aapt 839 * tool. This integer encodes the package, type, and resource 840 * entry. The value 0 is an invalid identifier. 841 * 842 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 843 * 844 * @return A new parser object through which you can read 845 * the XML data. 846 * 847 * @see #getXml 848 */ 849 public XmlResourceParser getLayout(int id) throws NotFoundException { 850 return loadXmlResourceParser(id, "layout"); 851 } 852 853 /** 854 * Return an XmlResourceParser through which you can read an animation 855 * description for the given resource ID. This parser has limited 856 * functionality -- in particular, you can't change its input, and only 857 * the high-level events are available. 858 * 859 * <p>This function is really a simple wrapper for calling 860 * {@link #getXml} with an animation resource. 861 * 862 * @param id The desired resource identifier, as generated by the aapt 863 * tool. This integer encodes the package, type, and resource 864 * entry. The value 0 is an invalid identifier. 865 * 866 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 867 * 868 * @return A new parser object through which you can read 869 * the XML data. 870 * 871 * @see #getXml 872 */ 873 public XmlResourceParser getAnimation(int id) throws NotFoundException { 874 return loadXmlResourceParser(id, "anim"); 875 } 876 877 /** 878 * Return an XmlResourceParser through which you can read a generic XML 879 * resource for the given resource ID. 880 * 881 * <p>The XmlPullParser implementation returned here has some limited 882 * functionality. In particular, you can't change its input, and only 883 * high-level parsing events are available (since the document was 884 * pre-parsed for you at build time, which involved merging text and 885 * stripping comments). 886 * 887 * @param id The desired resource identifier, as generated by the aapt 888 * tool. This integer encodes the package, type, and resource 889 * entry. The value 0 is an invalid identifier. 890 * 891 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 892 * 893 * @return A new parser object through which you can read 894 * the XML data. 895 * 896 * @see android.util.AttributeSet 897 */ 898 public XmlResourceParser getXml(int id) throws NotFoundException { 899 return loadXmlResourceParser(id, "xml"); 900 } 901 902 /** 903 * Open a data stream for reading a raw resource. This can only be used 904 * with resources whose value is the name of an asset files -- that is, it can be 905 * used to open drawable, sound, and raw resources; it will fail on string 906 * and color resources. 907 * 908 * @param id The resource identifier to open, as generated by the appt 909 * tool. 910 * 911 * @return InputStream Access to the resource data. 912 * 913 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 914 * 915 */ 916 public InputStream openRawResource(int id) throws NotFoundException { 917 synchronized (mTmpValue) { 918 return openRawResource(id, mTmpValue); 919 } 920 } 921 922 /** 923 * Open a data stream for reading a raw resource. This can only be used 924 * with resources whose value is the name of an asset file -- that is, it can be 925 * used to open drawable, sound, and raw resources; it will fail on string 926 * and color resources. 927 * 928 * @param id The resource identifier to open, as generated by the appt tool. 929 * @param value The TypedValue object to hold the resource information. 930 * 931 * @return InputStream Access to the resource data. 932 * 933 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 934 */ 935 public InputStream openRawResource(int id, TypedValue value) throws NotFoundException { 936 getValue(id, value, true); 937 938 try { 939 return mAssets.openNonAsset(value.assetCookie, value.string.toString(), 940 AssetManager.ACCESS_STREAMING); 941 } catch (Exception e) { 942 NotFoundException rnf = new NotFoundException("File " + value.string.toString() + 943 " from drawable resource ID #0x" + Integer.toHexString(id)); 944 rnf.initCause(e); 945 throw rnf; 946 } 947 } 948 949 /** 950 * Open a file descriptor for reading a raw resource. This can only be used 951 * with resources whose value is the name of an asset files -- that is, it can be 952 * used to open drawable, sound, and raw resources; it will fail on string 953 * and color resources. 954 * 955 * <p>This function only works for resources that are stored in the package 956 * as uncompressed data, which typically includes things like mp3 files 957 * and png images. 958 * 959 * @param id The resource identifier to open, as generated by the appt 960 * tool. 961 * 962 * @return AssetFileDescriptor A new file descriptor you can use to read 963 * the resource. This includes the file descriptor itself, as well as the 964 * offset and length of data where the resource appears in the file. A 965 * null is returned if the file exists but is compressed. 966 * 967 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 968 * 969 */ 970 public AssetFileDescriptor openRawResourceFd(int id) throws NotFoundException { 971 synchronized (mTmpValue) { 972 TypedValue value = mTmpValue; 973 getValue(id, value, true); 974 975 try { 976 return mAssets.openNonAssetFd( 977 value.assetCookie, value.string.toString()); 978 } catch (Exception e) { 979 NotFoundException rnf = new NotFoundException( 980 "File " + value.string.toString() 981 + " from drawable resource ID #0x" 982 + Integer.toHexString(id)); 983 rnf.initCause(e); 984 throw rnf; 985 } 986 987 } 988 } 989 990 /** 991 * Return the raw data associated with a particular resource ID. 992 * 993 * @param id The desired resource identifier, as generated by the aapt 994 * tool. This integer encodes the package, type, and resource 995 * entry. The value 0 is an invalid identifier. 996 * @param outValue Object in which to place the resource data. 997 * @param resolveRefs If true, a resource that is a reference to another 998 * resource will be followed so that you receive the 999 * actual final resource data. If false, the TypedValue 1000 * will be filled in with the reference itself. 1001 * 1002 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1003 * 1004 */ 1005 public void getValue(int id, TypedValue outValue, boolean resolveRefs) 1006 throws NotFoundException { 1007 boolean found = mAssets.getResourceValue(id, 0, outValue, resolveRefs); 1008 if (found) { 1009 return; 1010 } 1011 throw new NotFoundException("Resource ID #0x" 1012 + Integer.toHexString(id)); 1013 } 1014 1015 /** 1016 * Get the raw value associated with a resource with associated density. 1017 * 1018 * @param id resource identifier 1019 * @param density density in DPI 1020 * @param resolveRefs If true, a resource that is a reference to another 1021 * resource will be followed so that you receive the actual final 1022 * resource data. If false, the TypedValue will be filled in with 1023 * the reference itself. 1024 * @throws NotFoundException Throws NotFoundException if the given ID does 1025 * not exist. 1026 * @see #getValue(String, TypedValue, boolean) 1027 * @hide 1028 */ 1029 public void getValueForDensity(int id, int density, TypedValue outValue, boolean resolveRefs) 1030 throws NotFoundException { 1031 boolean found = mAssets.getResourceValue(id, density, outValue, resolveRefs); 1032 if (found) { 1033 return; 1034 } 1035 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id)); 1036 } 1037 1038 /** 1039 * Return the raw data associated with a particular resource ID. 1040 * See getIdentifier() for information on how names are mapped to resource 1041 * IDs, and getString(int) for information on how string resources are 1042 * retrieved. 1043 * 1044 * <p>Note: use of this function is discouraged. It is much more 1045 * efficient to retrieve resources by identifier than by name. 1046 * 1047 * @param name The name of the desired resource. This is passed to 1048 * getIdentifier() with a default type of "string". 1049 * @param outValue Object in which to place the resource data. 1050 * @param resolveRefs If true, a resource that is a reference to another 1051 * resource will be followed so that you receive the 1052 * actual final resource data. If false, the TypedValue 1053 * will be filled in with the reference itself. 1054 * 1055 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1056 * 1057 */ 1058 public void getValue(String name, TypedValue outValue, boolean resolveRefs) 1059 throws NotFoundException { 1060 int id = getIdentifier(name, "string", null); 1061 if (id != 0) { 1062 getValue(id, outValue, resolveRefs); 1063 return; 1064 } 1065 throw new NotFoundException("String resource name " + name); 1066 } 1067 1068 /** 1069 * This class holds the current attribute values for a particular theme. 1070 * In other words, a Theme is a set of values for resource attributes; 1071 * these are used in conjunction with {@link TypedArray} 1072 * to resolve the final value for an attribute. 1073 * 1074 * <p>The Theme's attributes come into play in two ways: (1) a styled 1075 * attribute can explicit reference a value in the theme through the 1076 * "?themeAttribute" syntax; (2) if no value has been defined for a 1077 * particular styled attribute, as a last resort we will try to find that 1078 * attribute's value in the Theme. 1079 * 1080 * <p>You will normally use the {@link #obtainStyledAttributes} APIs to 1081 * retrieve XML attributes with style and theme information applied. 1082 */ 1083 public final class Theme { 1084 /** 1085 * Place new attribute values into the theme. The style resource 1086 * specified by <var>resid</var> will be retrieved from this Theme's 1087 * resources, its values placed into the Theme object. 1088 * 1089 * <p>The semantics of this function depends on the <var>force</var> 1090 * argument: If false, only values that are not already defined in 1091 * the theme will be copied from the system resource; otherwise, if 1092 * any of the style's attributes are already defined in the theme, the 1093 * current values in the theme will be overwritten. 1094 * 1095 * @param resid The resource ID of a style resource from which to 1096 * obtain attribute values. 1097 * @param force If true, values in the style resource will always be 1098 * used in the theme; otherwise, they will only be used 1099 * if not already defined in the theme. 1100 */ 1101 public void applyStyle(int resid, boolean force) { 1102 AssetManager.applyThemeStyle(mTheme, resid, force); 1103 } 1104 1105 /** 1106 * Set this theme to hold the same contents as the theme 1107 * <var>other</var>. If both of these themes are from the same 1108 * Resources object, they will be identical after this function 1109 * returns. If they are from different Resources, only the resources 1110 * they have in common will be set in this theme. 1111 * 1112 * @param other The existing Theme to copy from. 1113 */ 1114 public void setTo(Theme other) { 1115 AssetManager.copyTheme(mTheme, other.mTheme); 1116 } 1117 1118 /** 1119 * Return a StyledAttributes holding the values defined by 1120 * <var>Theme</var> which are listed in <var>attrs</var>. 1121 * 1122 * <p>Be sure to call StyledAttributes.recycle() when you are done with 1123 * the array. 1124 * 1125 * @param attrs The desired attributes. 1126 * 1127 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1128 * 1129 * @return Returns a TypedArray holding an array of the attribute values. 1130 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1131 * when done with it. 1132 * 1133 * @see Resources#obtainAttributes 1134 * @see #obtainStyledAttributes(int, int[]) 1135 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1136 */ 1137 public TypedArray obtainStyledAttributes(int[] attrs) { 1138 int len = attrs.length; 1139 TypedArray array = getCachedStyledAttributes(len); 1140 array.mRsrcs = attrs; 1141 AssetManager.applyStyle(mTheme, 0, 0, 0, attrs, 1142 array.mData, array.mIndices); 1143 return array; 1144 } 1145 1146 /** 1147 * Return a StyledAttributes holding the values defined by the style 1148 * resource <var>resid</var> which are listed in <var>attrs</var>. 1149 * 1150 * <p>Be sure to call StyledAttributes.recycle() when you are done with 1151 * the array. 1152 * 1153 * @param resid The desired style resource. 1154 * @param attrs The desired attributes in the style. 1155 * 1156 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1157 * 1158 * @return Returns a TypedArray holding an array of the attribute values. 1159 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1160 * when done with it. 1161 * 1162 * @see Resources#obtainAttributes 1163 * @see #obtainStyledAttributes(int[]) 1164 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1165 */ 1166 public TypedArray obtainStyledAttributes(int resid, int[] attrs) 1167 throws NotFoundException { 1168 int len = attrs.length; 1169 TypedArray array = getCachedStyledAttributes(len); 1170 array.mRsrcs = attrs; 1171 1172 AssetManager.applyStyle(mTheme, 0, resid, 0, attrs, 1173 array.mData, array.mIndices); 1174 if (false) { 1175 int[] data = array.mData; 1176 1177 System.out.println("**********************************************************"); 1178 System.out.println("**********************************************************"); 1179 System.out.println("**********************************************************"); 1180 System.out.println("Attributes:"); 1181 String s = " Attrs:"; 1182 int i; 1183 for (i=0; i<attrs.length; i++) { 1184 s = s + " 0x" + Integer.toHexString(attrs[i]); 1185 } 1186 System.out.println(s); 1187 s = " Found:"; 1188 TypedValue value = new TypedValue(); 1189 for (i=0; i<attrs.length; i++) { 1190 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1191 value.type = data[d+AssetManager.STYLE_TYPE]; 1192 value.data = data[d+AssetManager.STYLE_DATA]; 1193 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1194 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1195 s = s + " 0x" + Integer.toHexString(attrs[i]) 1196 + "=" + value; 1197 } 1198 System.out.println(s); 1199 } 1200 return array; 1201 } 1202 1203 /** 1204 * Return a StyledAttributes holding the attribute values in 1205 * <var>set</var> 1206 * that are listed in <var>attrs</var>. In addition, if the given 1207 * AttributeSet specifies a style class (through the "style" attribute), 1208 * that style will be applied on top of the base attributes it defines. 1209 * 1210 * <p>Be sure to call StyledAttributes.recycle() when you are done with 1211 * the array. 1212 * 1213 * <p>When determining the final value of a particular attribute, there 1214 * are four inputs that come into play:</p> 1215 * 1216 * <ol> 1217 * <li> Any attribute values in the given AttributeSet. 1218 * <li> The style resource specified in the AttributeSet (named 1219 * "style"). 1220 * <li> The default style specified by <var>defStyleAttr</var> and 1221 * <var>defStyleRes</var> 1222 * <li> The base values in this theme. 1223 * </ol> 1224 * 1225 * <p>Each of these inputs is considered in-order, with the first listed 1226 * taking precedence over the following ones. In other words, if in the 1227 * AttributeSet you have supplied <code><Button 1228 * textColor="#ff000000"></code>, then the button's text will 1229 * <em>always</em> be black, regardless of what is specified in any of 1230 * the styles. 1231 * 1232 * @param set The base set of attribute values. May be null. 1233 * @param attrs The desired attributes to be retrieved. 1234 * @param defStyleAttr An attribute in the current theme that contains a 1235 * reference to a style resource that supplies 1236 * defaults values for the StyledAttributes. Can be 1237 * 0 to not look for defaults. 1238 * @param defStyleRes A resource identifier of a style resource that 1239 * supplies default values for the StyledAttributes, 1240 * used only if defStyleAttr is 0 or can not be found 1241 * in the theme. Can be 0 to not look for defaults. 1242 * 1243 * @return Returns a TypedArray holding an array of the attribute values. 1244 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1245 * when done with it. 1246 * 1247 * @see Resources#obtainAttributes 1248 * @see #obtainStyledAttributes(int[]) 1249 * @see #obtainStyledAttributes(int, int[]) 1250 */ 1251 public TypedArray obtainStyledAttributes(AttributeSet set, 1252 int[] attrs, int defStyleAttr, int defStyleRes) { 1253 int len = attrs.length; 1254 TypedArray array = getCachedStyledAttributes(len); 1255 1256 // XXX note that for now we only work with compiled XML files. 1257 // To support generic XML files we will need to manually parse 1258 // out the attributes from the XML file (applying type information 1259 // contained in the resources and such). 1260 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1261 AssetManager.applyStyle( 1262 mTheme, defStyleAttr, defStyleRes, 1263 parser != null ? parser.mParseState : 0, attrs, 1264 array.mData, array.mIndices); 1265 1266 array.mRsrcs = attrs; 1267 array.mXml = parser; 1268 1269 if (false) { 1270 int[] data = array.mData; 1271 1272 System.out.println("Attributes:"); 1273 String s = " Attrs:"; 1274 int i; 1275 for (i=0; i<set.getAttributeCount(); i++) { 1276 s = s + " " + set.getAttributeName(i); 1277 int id = set.getAttributeNameResource(i); 1278 if (id != 0) { 1279 s = s + "(0x" + Integer.toHexString(id) + ")"; 1280 } 1281 s = s + "=" + set.getAttributeValue(i); 1282 } 1283 System.out.println(s); 1284 s = " Found:"; 1285 TypedValue value = new TypedValue(); 1286 for (i=0; i<attrs.length; i++) { 1287 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1288 value.type = data[d+AssetManager.STYLE_TYPE]; 1289 value.data = data[d+AssetManager.STYLE_DATA]; 1290 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1291 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1292 s = s + " 0x" + Integer.toHexString(attrs[i]) 1293 + "=" + value; 1294 } 1295 System.out.println(s); 1296 } 1297 1298 return array; 1299 } 1300 1301 /** 1302 * Retrieve the value of an attribute in the Theme. The contents of 1303 * <var>outValue</var> are ultimately filled in by 1304 * {@link Resources#getValue}. 1305 * 1306 * @param resid The resource identifier of the desired theme 1307 * attribute. 1308 * @param outValue Filled in with the ultimate resource value supplied 1309 * by the attribute. 1310 * @param resolveRefs If true, resource references will be walked; if 1311 * false, <var>outValue</var> may be a 1312 * TYPE_REFERENCE. In either case, it will never 1313 * be a TYPE_ATTRIBUTE. 1314 * 1315 * @return boolean Returns true if the attribute was found and 1316 * <var>outValue</var> is valid, else false. 1317 */ 1318 public boolean resolveAttribute(int resid, TypedValue outValue, 1319 boolean resolveRefs) { 1320 boolean got = mAssets.getThemeValue(mTheme, resid, outValue, resolveRefs); 1321 if (false) { 1322 System.out.println( 1323 "resolveAttribute #" + Integer.toHexString(resid) 1324 + " got=" + got + ", type=0x" + Integer.toHexString(outValue.type) 1325 + ", data=0x" + Integer.toHexString(outValue.data)); 1326 } 1327 return got; 1328 } 1329 1330 /** 1331 * Print contents of this theme out to the log. For debugging only. 1332 * 1333 * @param priority The log priority to use. 1334 * @param tag The log tag to use. 1335 * @param prefix Text to prefix each line printed. 1336 */ 1337 public void dump(int priority, String tag, String prefix) { 1338 AssetManager.dumpTheme(mTheme, priority, tag, prefix); 1339 } 1340 1341 protected void finalize() throws Throwable { 1342 super.finalize(); 1343 mAssets.releaseTheme(mTheme); 1344 } 1345 1346 /*package*/ Theme() { 1347 mAssets = Resources.this.mAssets; 1348 mTheme = mAssets.createTheme(); 1349 } 1350 1351 private final AssetManager mAssets; 1352 private final int mTheme; 1353 } 1354 1355 /** 1356 * Generate a new Theme object for this set of Resources. It initially 1357 * starts out empty. 1358 * 1359 * @return Theme The newly created Theme container. 1360 */ 1361 public final Theme newTheme() { 1362 return new Theme(); 1363 } 1364 1365 /** 1366 * Retrieve a set of basic attribute values from an AttributeSet, not 1367 * performing styling of them using a theme and/or style resources. 1368 * 1369 * @param set The current attribute values to retrieve. 1370 * @param attrs The specific attributes to be retrieved. 1371 * @return Returns a TypedArray holding an array of the attribute values. 1372 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1373 * when done with it. 1374 * 1375 * @see Theme#obtainStyledAttributes(AttributeSet, int[], int, int) 1376 */ 1377 public TypedArray obtainAttributes(AttributeSet set, int[] attrs) { 1378 int len = attrs.length; 1379 TypedArray array = getCachedStyledAttributes(len); 1380 1381 // XXX note that for now we only work with compiled XML files. 1382 // To support generic XML files we will need to manually parse 1383 // out the attributes from the XML file (applying type information 1384 // contained in the resources and such). 1385 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1386 mAssets.retrieveAttributes(parser.mParseState, attrs, 1387 array.mData, array.mIndices); 1388 1389 array.mRsrcs = attrs; 1390 array.mXml = parser; 1391 1392 return array; 1393 } 1394 1395 /** 1396 * Store the newly updated configuration. 1397 */ 1398 public void updateConfiguration(Configuration config, 1399 DisplayMetrics metrics) { 1400 updateConfiguration(config, metrics, null); 1401 } 1402 1403 /** 1404 * @hide 1405 */ 1406 public void updateConfiguration(Configuration config, 1407 DisplayMetrics metrics, CompatibilityInfo compat) { 1408 synchronized (mTmpValue) { 1409 if (compat != null) { 1410 mCompatibilityInfo = compat; 1411 } 1412 int configChanges = 0xfffffff; 1413 if (config != null) { 1414 mTmpConfig.setTo(config); 1415 if (mCompatibilityInfo != null) { 1416 mCompatibilityInfo.applyToConfiguration(mTmpConfig); 1417 } 1418 configChanges = mConfiguration.updateFrom(mTmpConfig); 1419 configChanges = ActivityInfo.activityInfoConfigToNative(configChanges); 1420 } 1421 if (mConfiguration.locale == null) { 1422 mConfiguration.locale = Locale.getDefault(); 1423 } 1424 if (metrics != null) { 1425 mMetrics.setTo(metrics); 1426 // NOTE: We should re-arrange this code to create a Display 1427 // with the CompatibilityInfo that is used everywhere we deal 1428 // with the display in relation to this app, rather than 1429 // doing the conversion here. This impl should be okay because 1430 // we make sure to return a compatible display in the places 1431 // where there are public APIs to retrieve the display... but 1432 // it would be cleaner and more maintainble to just be 1433 // consistently dealing with a compatible display everywhere in 1434 // the framework. 1435 if (mCompatibilityInfo != null) { 1436 mCompatibilityInfo.applyToDisplayMetrics(mMetrics); 1437 } 1438 } 1439 mMetrics.scaledDensity = mMetrics.density * mConfiguration.fontScale; 1440 1441 String locale = null; 1442 if (mConfiguration.locale != null) { 1443 locale = mConfiguration.locale.getLanguage(); 1444 if (mConfiguration.locale.getCountry() != null) { 1445 locale += "-" + mConfiguration.locale.getCountry(); 1446 } 1447 } 1448 int width, height; 1449 if (mMetrics.widthPixels >= mMetrics.heightPixels) { 1450 width = mMetrics.widthPixels; 1451 height = mMetrics.heightPixels; 1452 } else { 1453 //noinspection SuspiciousNameCombination 1454 width = mMetrics.heightPixels; 1455 //noinspection SuspiciousNameCombination 1456 height = mMetrics.widthPixels; 1457 } 1458 int keyboardHidden = mConfiguration.keyboardHidden; 1459 if (keyboardHidden == Configuration.KEYBOARDHIDDEN_NO 1460 && mConfiguration.hardKeyboardHidden 1461 == Configuration.HARDKEYBOARDHIDDEN_YES) { 1462 keyboardHidden = Configuration.KEYBOARDHIDDEN_SOFT; 1463 } 1464 mAssets.setConfiguration(mConfiguration.mcc, mConfiguration.mnc, 1465 locale, mConfiguration.orientation, 1466 mConfiguration.touchscreen, 1467 (int)(mMetrics.density*160), mConfiguration.keyboard, 1468 keyboardHidden, mConfiguration.navigation, width, height, 1469 mConfiguration.smallestScreenWidthDp, 1470 mConfiguration.screenWidthDp, mConfiguration.screenHeightDp, 1471 mConfiguration.screenLayout, mConfiguration.uiMode, 1472 Build.VERSION.RESOURCES_SDK_INT); 1473 1474 clearDrawableCache(mDrawableCache, configChanges); 1475 clearDrawableCache(mColorDrawableCache, configChanges); 1476 1477 mColorStateListCache.clear(); 1478 1479 flushLayoutCache(); 1480 } 1481 synchronized (mSync) { 1482 if (mPluralRule != null) { 1483 mPluralRule = NativePluralRules.forLocale(config.locale); 1484 } 1485 } 1486 } 1487 1488 private void clearDrawableCache( 1489 LongSparseArray<WeakReference<ConstantState>> cache, 1490 int configChanges) { 1491 int N = cache.size(); 1492 if (DEBUG_CONFIG) { 1493 Log.d(TAG, "Cleaning up drawables config changes: 0x" 1494 + Integer.toHexString(configChanges)); 1495 } 1496 for (int i=0; i<N; i++) { 1497 WeakReference<Drawable.ConstantState> ref = cache.valueAt(i); 1498 if (ref != null) { 1499 Drawable.ConstantState cs = ref.get(); 1500 if (cs != null) { 1501 if (Configuration.needNewResources( 1502 configChanges, cs.getChangingConfigurations())) { 1503 if (DEBUG_CONFIG) { 1504 Log.d(TAG, "FLUSHING #0x" 1505 + Long.toHexString(mDrawableCache.keyAt(i)) 1506 + " / " + cs + " with changes: 0x" 1507 + Integer.toHexString(cs.getChangingConfigurations())); 1508 } 1509 cache.setValueAt(i, null); 1510 } else if (DEBUG_CONFIG) { 1511 Log.d(TAG, "(Keeping #0x" 1512 + Long.toHexString(cache.keyAt(i)) 1513 + " / " + cs + " with changes: 0x" 1514 + Integer.toHexString(cs.getChangingConfigurations()) 1515 + ")"); 1516 } 1517 } 1518 } 1519 } 1520 } 1521 1522 /** 1523 * Update the system resources configuration if they have previously 1524 * been initialized. 1525 * 1526 * @hide 1527 */ 1528 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics, 1529 CompatibilityInfo compat) { 1530 if (mSystem != null) { 1531 mSystem.updateConfiguration(config, metrics, compat); 1532 //Log.i(TAG, "Updated system resources " + mSystem 1533 // + ": " + mSystem.getConfiguration()); 1534 } 1535 } 1536 1537 /** 1538 * @hide 1539 */ 1540 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics) { 1541 updateSystemConfiguration(config, metrics, null); 1542 } 1543 1544 /** 1545 * Return the current display metrics that are in effect for this resource 1546 * object. The returned object should be treated as read-only. 1547 * 1548 * @return The resource's current display metrics. 1549 */ 1550 public DisplayMetrics getDisplayMetrics() { 1551 return mMetrics; 1552 } 1553 1554 /** 1555 * Return the current configuration that is in effect for this resource 1556 * object. The returned object should be treated as read-only. 1557 * 1558 * @return The resource's current configuration. 1559 */ 1560 public Configuration getConfiguration() { 1561 return mConfiguration; 1562 } 1563 1564 /** 1565 * Return the compatibility mode information for the application. 1566 * The returned object should be treated as read-only. 1567 * 1568 * @return compatibility info. 1569 * @hide 1570 */ 1571 public CompatibilityInfo getCompatibilityInfo() { 1572 return mCompatibilityInfo != null ? mCompatibilityInfo 1573 : CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 1574 } 1575 1576 /** 1577 * This is just for testing. 1578 * @hide 1579 */ 1580 public void setCompatibilityInfo(CompatibilityInfo ci) { 1581 mCompatibilityInfo = ci; 1582 updateConfiguration(mConfiguration, mMetrics); 1583 } 1584 1585 /** 1586 * Return a resource identifier for the given resource name. A fully 1587 * qualified resource name is of the form "package:type/entry". The first 1588 * two components (package and type) are optional if defType and 1589 * defPackage, respectively, are specified here. 1590 * 1591 * <p>Note: use of this function is discouraged. It is much more 1592 * efficient to retrieve resources by identifier than by name. 1593 * 1594 * @param name The name of the desired resource. 1595 * @param defType Optional default resource type to find, if "type/" is 1596 * not included in the name. Can be null to require an 1597 * explicit type. 1598 * @param defPackage Optional default package to find, if "package:" is 1599 * not included in the name. Can be null to require an 1600 * explicit package. 1601 * 1602 * @return int The associated resource identifier. Returns 0 if no such 1603 * resource was found. (0 is not a valid resource ID.) 1604 */ 1605 public int getIdentifier(String name, String defType, String defPackage) { 1606 try { 1607 return Integer.parseInt(name); 1608 } catch (Exception e) { 1609 // Ignore 1610 } 1611 return mAssets.getResourceIdentifier(name, defType, defPackage); 1612 } 1613 1614 /** 1615 * Return the full name for a given resource identifier. This name is 1616 * a single string of the form "package:type/entry". 1617 * 1618 * @param resid The resource identifier whose name is to be retrieved. 1619 * 1620 * @return A string holding the name of the resource. 1621 * 1622 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1623 * 1624 * @see #getResourcePackageName 1625 * @see #getResourceTypeName 1626 * @see #getResourceEntryName 1627 */ 1628 public String getResourceName(int resid) throws NotFoundException { 1629 String str = mAssets.getResourceName(resid); 1630 if (str != null) return str; 1631 throw new NotFoundException("Unable to find resource ID #0x" 1632 + Integer.toHexString(resid)); 1633 } 1634 1635 /** 1636 * Return the package name for a given resource identifier. 1637 * 1638 * @param resid The resource identifier whose package name is to be 1639 * retrieved. 1640 * 1641 * @return A string holding the package name of the resource. 1642 * 1643 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1644 * 1645 * @see #getResourceName 1646 */ 1647 public String getResourcePackageName(int resid) throws NotFoundException { 1648 String str = mAssets.getResourcePackageName(resid); 1649 if (str != null) return str; 1650 throw new NotFoundException("Unable to find resource ID #0x" 1651 + Integer.toHexString(resid)); 1652 } 1653 1654 /** 1655 * Return the type name for a given resource identifier. 1656 * 1657 * @param resid The resource identifier whose type name is to be 1658 * retrieved. 1659 * 1660 * @return A string holding the type name of the resource. 1661 * 1662 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1663 * 1664 * @see #getResourceName 1665 */ 1666 public String getResourceTypeName(int resid) throws NotFoundException { 1667 String str = mAssets.getResourceTypeName(resid); 1668 if (str != null) return str; 1669 throw new NotFoundException("Unable to find resource ID #0x" 1670 + Integer.toHexString(resid)); 1671 } 1672 1673 /** 1674 * Return the entry name for a given resource identifier. 1675 * 1676 * @param resid The resource identifier whose entry name is to be 1677 * retrieved. 1678 * 1679 * @return A string holding the entry name of the resource. 1680 * 1681 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1682 * 1683 * @see #getResourceName 1684 */ 1685 public String getResourceEntryName(int resid) throws NotFoundException { 1686 String str = mAssets.getResourceEntryName(resid); 1687 if (str != null) return str; 1688 throw new NotFoundException("Unable to find resource ID #0x" 1689 + Integer.toHexString(resid)); 1690 } 1691 1692 /** 1693 * Parse a series of {@link android.R.styleable#Extra <extra>} tags from 1694 * an XML file. You call this when you are at the parent tag of the 1695 * extra tags, and it will return once all of the child tags have been parsed. 1696 * This will call {@link #parseBundleExtra} for each extra tag encountered. 1697 * 1698 * @param parser The parser from which to retrieve the extras. 1699 * @param outBundle A Bundle in which to place all parsed extras. 1700 * @throws XmlPullParserException 1701 * @throws IOException 1702 */ 1703 public void parseBundleExtras(XmlResourceParser parser, Bundle outBundle) 1704 throws XmlPullParserException, IOException { 1705 int outerDepth = parser.getDepth(); 1706 int type; 1707 while ((type=parser.next()) != XmlPullParser.END_DOCUMENT 1708 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 1709 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 1710 continue; 1711 } 1712 1713 String nodeName = parser.getName(); 1714 if (nodeName.equals("extra")) { 1715 parseBundleExtra("extra", parser, outBundle); 1716 XmlUtils.skipCurrentTag(parser); 1717 1718 } else { 1719 XmlUtils.skipCurrentTag(parser); 1720 } 1721 } 1722 } 1723 1724 /** 1725 * Parse a name/value pair out of an XML tag holding that data. The 1726 * AttributeSet must be holding the data defined by 1727 * {@link android.R.styleable#Extra}. The following value types are supported: 1728 * <ul> 1729 * <li> {@link TypedValue#TYPE_STRING}: 1730 * {@link Bundle#putCharSequence Bundle.putCharSequence()} 1731 * <li> {@link TypedValue#TYPE_INT_BOOLEAN}: 1732 * {@link Bundle#putCharSequence Bundle.putBoolean()} 1733 * <li> {@link TypedValue#TYPE_FIRST_INT}-{@link TypedValue#TYPE_LAST_INT}: 1734 * {@link Bundle#putCharSequence Bundle.putBoolean()} 1735 * <li> {@link TypedValue#TYPE_FLOAT}: 1736 * {@link Bundle#putCharSequence Bundle.putFloat()} 1737 * </ul> 1738 * 1739 * @param tagName The name of the tag these attributes come from; this is 1740 * only used for reporting error messages. 1741 * @param attrs The attributes from which to retrieve the name/value pair. 1742 * @param outBundle The Bundle in which to place the parsed value. 1743 * @throws XmlPullParserException If the attributes are not valid. 1744 */ 1745 public void parseBundleExtra(String tagName, AttributeSet attrs, 1746 Bundle outBundle) throws XmlPullParserException { 1747 TypedArray sa = obtainAttributes(attrs, 1748 com.android.internal.R.styleable.Extra); 1749 1750 String name = sa.getString( 1751 com.android.internal.R.styleable.Extra_name); 1752 if (name == null) { 1753 sa.recycle(); 1754 throw new XmlPullParserException("<" + tagName 1755 + "> requires an android:name attribute at " 1756 + attrs.getPositionDescription()); 1757 } 1758 1759 TypedValue v = sa.peekValue( 1760 com.android.internal.R.styleable.Extra_value); 1761 if (v != null) { 1762 if (v.type == TypedValue.TYPE_STRING) { 1763 CharSequence cs = v.coerceToString(); 1764 outBundle.putCharSequence(name, cs); 1765 } else if (v.type == TypedValue.TYPE_INT_BOOLEAN) { 1766 outBundle.putBoolean(name, v.data != 0); 1767 } else if (v.type >= TypedValue.TYPE_FIRST_INT 1768 && v.type <= TypedValue.TYPE_LAST_INT) { 1769 outBundle.putInt(name, v.data); 1770 } else if (v.type == TypedValue.TYPE_FLOAT) { 1771 outBundle.putFloat(name, v.getFloat()); 1772 } else { 1773 sa.recycle(); 1774 throw new XmlPullParserException("<" + tagName 1775 + "> only supports string, integer, float, color, and boolean at " 1776 + attrs.getPositionDescription()); 1777 } 1778 } else { 1779 sa.recycle(); 1780 throw new XmlPullParserException("<" + tagName 1781 + "> requires an android:value or android:resource attribute at " 1782 + attrs.getPositionDescription()); 1783 } 1784 1785 sa.recycle(); 1786 } 1787 1788 /** 1789 * Retrieve underlying AssetManager storage for these resources. 1790 */ 1791 public final AssetManager getAssets() { 1792 return mAssets; 1793 } 1794 1795 /** 1796 * Call this to remove all cached loaded layout resources from the 1797 * Resources object. Only intended for use with performance testing 1798 * tools. 1799 */ 1800 public final void flushLayoutCache() { 1801 synchronized (mCachedXmlBlockIds) { 1802 // First see if this block is in our cache. 1803 final int num = mCachedXmlBlockIds.length; 1804 for (int i=0; i<num; i++) { 1805 mCachedXmlBlockIds[i] = -0; 1806 XmlBlock oldBlock = mCachedXmlBlocks[i]; 1807 if (oldBlock != null) { 1808 oldBlock.close(); 1809 } 1810 mCachedXmlBlocks[i] = null; 1811 } 1812 } 1813 } 1814 1815 /** 1816 * Start preloading of resource data using this Resources object. Only 1817 * for use by the zygote process for loading common system resources. 1818 * {@hide} 1819 */ 1820 public final void startPreloading() { 1821 synchronized (mSync) { 1822 if (mPreloaded) { 1823 throw new IllegalStateException("Resources already preloaded"); 1824 } 1825 mPreloaded = true; 1826 mPreloading = true; 1827 } 1828 } 1829 1830 /** 1831 * Called by zygote when it is done preloading resources, to change back 1832 * to normal Resources operation. 1833 */ 1834 public final void finishPreloading() { 1835 if (mPreloading) { 1836 mPreloading = false; 1837 flushLayoutCache(); 1838 } 1839 } 1840 1841 /*package*/ Drawable loadDrawable(TypedValue value, int id) 1842 throws NotFoundException { 1843 1844 if (TRACE_FOR_PRELOAD) { 1845 // Log only framework resources 1846 if ((id >>> 24) == 0x1) { 1847 final String name = getResourceName(id); 1848 if (name != null) android.util.Log.d("PreloadDrawable", name); 1849 } 1850 } 1851 1852 final long key = (((long) value.assetCookie) << 32) | value.data; 1853 boolean isColorDrawable = false; 1854 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 1855 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 1856 isColorDrawable = true; 1857 } 1858 Drawable dr = getCachedDrawable(isColorDrawable ? mColorDrawableCache : mDrawableCache, key); 1859 1860 if (dr != null) { 1861 return dr; 1862 } 1863 1864 Drawable.ConstantState cs = isColorDrawable ? sPreloadedColorDrawables.get(key) : sPreloadedDrawables.get(key); 1865 if (cs != null) { 1866 dr = cs.newDrawable(this); 1867 } else { 1868 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 1869 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 1870 dr = new ColorDrawable(value.data); 1871 } 1872 1873 if (dr == null) { 1874 if (value.string == null) { 1875 throw new NotFoundException( 1876 "Resource is not a Drawable (color or path): " + value); 1877 } 1878 1879 String file = value.string.toString(); 1880 1881 if (DEBUG_LOAD) Log.v(TAG, "Loading drawable for cookie " 1882 + value.assetCookie + ": " + file); 1883 1884 if (file.endsWith(".xml")) { 1885 try { 1886 XmlResourceParser rp = loadXmlResourceParser( 1887 file, id, value.assetCookie, "drawable"); 1888 dr = Drawable.createFromXml(this, rp); 1889 rp.close(); 1890 } catch (Exception e) { 1891 NotFoundException rnf = new NotFoundException( 1892 "File " + file + " from drawable resource ID #0x" 1893 + Integer.toHexString(id)); 1894 rnf.initCause(e); 1895 throw rnf; 1896 } 1897 1898 } else { 1899 try { 1900 InputStream is = mAssets.openNonAsset( 1901 value.assetCookie, file, AssetManager.ACCESS_STREAMING); 1902 // System.out.println("Opened file " + file + ": " + is); 1903 dr = Drawable.createFromResourceStream(this, value, is, 1904 file, null); 1905 is.close(); 1906 // System.out.println("Created stream: " + dr); 1907 } catch (Exception e) { 1908 NotFoundException rnf = new NotFoundException( 1909 "File " + file + " from drawable resource ID #0x" 1910 + Integer.toHexString(id)); 1911 rnf.initCause(e); 1912 throw rnf; 1913 } 1914 } 1915 } 1916 } 1917 1918 if (dr != null) { 1919 dr.setChangingConfigurations(value.changingConfigurations); 1920 cs = dr.getConstantState(); 1921 if (cs != null) { 1922 if (mPreloading) { 1923 if (isColorDrawable) { 1924 sPreloadedColorDrawables.put(key, cs); 1925 } else { 1926 sPreloadedDrawables.put(key, cs); 1927 } 1928 } else { 1929 synchronized (mTmpValue) { 1930 //Log.i(TAG, "Saving cached drawable @ #" + 1931 // Integer.toHexString(key.intValue()) 1932 // + " in " + this + ": " + cs); 1933 if (isColorDrawable) { 1934 mColorDrawableCache.put(key, new WeakReference<Drawable.ConstantState>(cs)); 1935 } else { 1936 mDrawableCache.put(key, new WeakReference<Drawable.ConstantState>(cs)); 1937 } 1938 } 1939 } 1940 } 1941 } 1942 1943 return dr; 1944 } 1945 1946 private Drawable getCachedDrawable( 1947 LongSparseArray<WeakReference<ConstantState>> drawableCache, 1948 long key) { 1949 synchronized (mTmpValue) { 1950 WeakReference<Drawable.ConstantState> wr = drawableCache.get(key); 1951 if (wr != null) { // we have the key 1952 Drawable.ConstantState entry = wr.get(); 1953 if (entry != null) { 1954 //Log.i(TAG, "Returning cached drawable @ #" + 1955 // Integer.toHexString(((Integer)key).intValue()) 1956 // + " in " + this + ": " + entry); 1957 return entry.newDrawable(this); 1958 } 1959 else { // our entry has been purged 1960 drawableCache.delete(key); 1961 } 1962 } 1963 } 1964 return null; 1965 } 1966 1967 /*package*/ ColorStateList loadColorStateList(TypedValue value, int id) 1968 throws NotFoundException { 1969 if (TRACE_FOR_PRELOAD) { 1970 // Log only framework resources 1971 if ((id >>> 24) == 0x1) { 1972 final String name = getResourceName(id); 1973 if (name != null) android.util.Log.d("PreloadColorStateList", name); 1974 } 1975 } 1976 1977 final int key = (value.assetCookie << 24) | value.data; 1978 1979 ColorStateList csl; 1980 1981 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 1982 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 1983 1984 csl = mPreloadedColorStateLists.get(key); 1985 if (csl != null) { 1986 return csl; 1987 } 1988 1989 csl = ColorStateList.valueOf(value.data); 1990 if (mPreloading) { 1991 mPreloadedColorStateLists.put(key, csl); 1992 } 1993 1994 return csl; 1995 } 1996 1997 csl = getCachedColorStateList(key); 1998 if (csl != null) { 1999 return csl; 2000 } 2001 2002 csl = mPreloadedColorStateLists.get(key); 2003 if (csl != null) { 2004 return csl; 2005 } 2006 2007 if (value.string == null) { 2008 throw new NotFoundException( 2009 "Resource is not a ColorStateList (color or path): " + value); 2010 } 2011 2012 String file = value.string.toString(); 2013 2014 if (file.endsWith(".xml")) { 2015 try { 2016 XmlResourceParser rp = loadXmlResourceParser( 2017 file, id, value.assetCookie, "colorstatelist"); 2018 csl = ColorStateList.createFromXml(this, rp); 2019 rp.close(); 2020 } catch (Exception e) { 2021 NotFoundException rnf = new NotFoundException( 2022 "File " + file + " from color state list resource ID #0x" 2023 + Integer.toHexString(id)); 2024 rnf.initCause(e); 2025 throw rnf; 2026 } 2027 } else { 2028 throw new NotFoundException( 2029 "File " + file + " from drawable resource ID #0x" 2030 + Integer.toHexString(id) + ": .xml extension required"); 2031 } 2032 2033 if (csl != null) { 2034 if (mPreloading) { 2035 mPreloadedColorStateLists.put(key, csl); 2036 } else { 2037 synchronized (mTmpValue) { 2038 //Log.i(TAG, "Saving cached color state list @ #" + 2039 // Integer.toHexString(key.intValue()) 2040 // + " in " + this + ": " + csl); 2041 mColorStateListCache.put( 2042 key, new WeakReference<ColorStateList>(csl)); 2043 } 2044 } 2045 } 2046 2047 return csl; 2048 } 2049 2050 private ColorStateList getCachedColorStateList(int key) { 2051 synchronized (mTmpValue) { 2052 WeakReference<ColorStateList> wr = mColorStateListCache.get(key); 2053 if (wr != null) { // we have the key 2054 ColorStateList entry = wr.get(); 2055 if (entry != null) { 2056 //Log.i(TAG, "Returning cached color state list @ #" + 2057 // Integer.toHexString(((Integer)key).intValue()) 2058 // + " in " + this + ": " + entry); 2059 return entry; 2060 } 2061 else { // our entry has been purged 2062 mColorStateListCache.delete(key); 2063 } 2064 } 2065 } 2066 return null; 2067 } 2068 2069 /*package*/ XmlResourceParser loadXmlResourceParser(int id, String type) 2070 throws NotFoundException { 2071 synchronized (mTmpValue) { 2072 TypedValue value = mTmpValue; 2073 getValue(id, value, true); 2074 if (value.type == TypedValue.TYPE_STRING) { 2075 return loadXmlResourceParser(value.string.toString(), id, 2076 value.assetCookie, type); 2077 } 2078 throw new NotFoundException( 2079 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 2080 + Integer.toHexString(value.type) + " is not valid"); 2081 } 2082 } 2083 2084 /*package*/ XmlResourceParser loadXmlResourceParser(String file, int id, 2085 int assetCookie, String type) throws NotFoundException { 2086 if (id != 0) { 2087 try { 2088 // These may be compiled... 2089 synchronized (mCachedXmlBlockIds) { 2090 // First see if this block is in our cache. 2091 final int num = mCachedXmlBlockIds.length; 2092 for (int i=0; i<num; i++) { 2093 if (mCachedXmlBlockIds[i] == id) { 2094 //System.out.println("**** REUSING XML BLOCK! id=" 2095 // + id + ", index=" + i); 2096 return mCachedXmlBlocks[i].newParser(); 2097 } 2098 } 2099 2100 // Not in the cache, create a new block and put it at 2101 // the next slot in the cache. 2102 XmlBlock block = mAssets.openXmlBlockAsset( 2103 assetCookie, file); 2104 if (block != null) { 2105 int pos = mLastCachedXmlBlockIndex+1; 2106 if (pos >= num) pos = 0; 2107 mLastCachedXmlBlockIndex = pos; 2108 XmlBlock oldBlock = mCachedXmlBlocks[pos]; 2109 if (oldBlock != null) { 2110 oldBlock.close(); 2111 } 2112 mCachedXmlBlockIds[pos] = id; 2113 mCachedXmlBlocks[pos] = block; 2114 //System.out.println("**** CACHING NEW XML BLOCK! id=" 2115 // + id + ", index=" + pos); 2116 return block.newParser(); 2117 } 2118 } 2119 } catch (Exception e) { 2120 NotFoundException rnf = new NotFoundException( 2121 "File " + file + " from xml type " + type + " resource ID #0x" 2122 + Integer.toHexString(id)); 2123 rnf.initCause(e); 2124 throw rnf; 2125 } 2126 } 2127 2128 throw new NotFoundException( 2129 "File " + file + " from xml type " + type + " resource ID #0x" 2130 + Integer.toHexString(id)); 2131 } 2132 2133 private TypedArray getCachedStyledAttributes(int len) { 2134 synchronized (mTmpValue) { 2135 TypedArray attrs = mCachedStyledAttributes; 2136 if (attrs != null) { 2137 mCachedStyledAttributes = null; 2138 2139 attrs.mLength = len; 2140 int fullLen = len * AssetManager.STYLE_NUM_ENTRIES; 2141 if (attrs.mData.length >= fullLen) { 2142 return attrs; 2143 } 2144 attrs.mData = new int[fullLen]; 2145 attrs.mIndices = new int[1+len]; 2146 return attrs; 2147 } 2148 return new TypedArray(this, 2149 new int[len*AssetManager.STYLE_NUM_ENTRIES], 2150 new int[1+len], len); 2151 } 2152 } 2153 2154 private Resources() { 2155 mAssets = AssetManager.getSystem(); 2156 // NOTE: Intentionally leaving this uninitialized (all values set 2157 // to zero), so that anyone who tries to do something that requires 2158 // metrics will get a very wrong value. 2159 mConfiguration.setToDefaults(); 2160 mMetrics.setToDefaults(); 2161 updateConfiguration(null, null); 2162 mAssets.ensureStringBlocks(); 2163 mCompatibilityInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 2164 } 2165} 2166