Resources.java revision 3b81bc18bb661c02ad8074c39dab16644c1e65d0
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.graphics.Movie; 25import android.graphics.drawable.Drawable; 26import android.graphics.drawable.ColorDrawable; 27import android.graphics.drawable.Drawable.ConstantState; 28import android.os.Build; 29import android.os.Bundle; 30import android.os.SystemProperties; 31import android.util.AttributeSet; 32import android.util.DisplayMetrics; 33import android.util.Log; 34import android.util.SparseArray; 35import android.util.TypedValue; 36import android.util.LongSparseArray; 37import android.view.Display; 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 getAssets()) and 49 * provides a higher-level API for getting typed data from the assets. 50 */ 51public class Resources { 52 static final String TAG = "Resources"; 53 private static final boolean DEBUG_LOAD = false; 54 private static final boolean DEBUG_CONFIG = false; 55 private static final boolean TRACE_FOR_PRELOAD = false; 56 57 private static final int ID_OTHER = 0x01000004; 58 59 private static final Object mSync = new Object(); 60 private static Resources mSystem = null; 61 62 // Information about preloaded resources. Note that they are not 63 // protected by a lock, because while preloading in zygote we are all 64 // single-threaded, and after that these are immutable. 65 private static final LongSparseArray<Drawable.ConstantState> sPreloadedDrawables 66 = new LongSparseArray<Drawable.ConstantState>(); 67 private static final SparseArray<ColorStateList> mPreloadedColorStateLists 68 = new SparseArray<ColorStateList>(); 69 private static final LongSparseArray<Drawable.ConstantState> sPreloadedColorDrawables 70 = new LongSparseArray<Drawable.ConstantState>(); 71 private static boolean mPreloaded; 72 73 /*package*/ final TypedValue mTmpValue = new TypedValue(); 74 75 // These are protected by the mTmpValue lock. 76 private final LongSparseArray<WeakReference<Drawable.ConstantState> > mDrawableCache 77 = new LongSparseArray<WeakReference<Drawable.ConstantState> >(); 78 private final SparseArray<WeakReference<ColorStateList> > mColorStateListCache 79 = new SparseArray<WeakReference<ColorStateList> >(); 80 private final LongSparseArray<WeakReference<Drawable.ConstantState> > mColorDrawableCache 81 = new LongSparseArray<WeakReference<Drawable.ConstantState> >(); 82 private boolean mPreloading; 83 84 /*package*/ TypedArray mCachedStyledAttributes = null; 85 86 private int mLastCachedXmlBlockIndex = -1; 87 private final int[] mCachedXmlBlockIds = { 0, 0, 0, 0 }; 88 private final XmlBlock[] mCachedXmlBlocks = new XmlBlock[4]; 89 90 /*package*/ final AssetManager mAssets; 91 private final Configuration mConfiguration = new Configuration(); 92 /*package*/ final DisplayMetrics mMetrics = new DisplayMetrics(); 93 private NativePluralRules mPluralRule; 94 95 private CompatibilityInfo mCompatibilityInfo; 96 private Display mDefaultDisplay; 97 98 private static final LongSparseArray<Object> EMPTY_ARRAY = new LongSparseArray<Object>() { 99 @Override 100 public void put(long k, Object o) { 101 throw new UnsupportedOperationException(); 102 } 103 @Override 104 public void append(long k, Object o) { 105 throw new UnsupportedOperationException(); 106 } 107 }; 108 109 @SuppressWarnings("unchecked") 110 private static <T> LongSparseArray<T> emptySparseArray() { 111 return (LongSparseArray<T>) EMPTY_ARRAY; 112 } 113 114 /** @hide */ 115 public static int selectDefaultTheme(int curTheme, int targetSdkVersion) { 116 return selectSystemTheme(curTheme, targetSdkVersion, 117 com.android.internal.R.style.Theme, com.android.internal.R.style.Theme_Holo); 118 } 119 120 /** @hide */ 121 public static int selectSystemTheme(int curTheme, int targetSdkVersion, int orig, int holo) { 122 if (curTheme != 0) { 123 return curTheme; 124 } 125 if (targetSdkVersion < Build.VERSION_CODES.HONEYCOMB) { 126 return orig; 127 } 128 return holo; 129 } 130 131 /** 132 * This exception is thrown by the resource APIs when a requested resource 133 * can not be found. 134 */ 135 public static class NotFoundException extends RuntimeException { 136 public NotFoundException() { 137 } 138 139 public NotFoundException(String name) { 140 super(name); 141 } 142 } 143 144 /** 145 * Create a new Resources object on top of an existing set of assets in an 146 * AssetManager. 147 * 148 * @param assets Previously created AssetManager. 149 * @param metrics Current display metrics to consider when 150 * selecting/computing resource values. 151 * @param config Desired device configuration to consider when 152 * selecting/computing resource values (optional). 153 */ 154 public Resources(AssetManager assets, DisplayMetrics metrics, 155 Configuration config) { 156 this(assets, metrics, config, (CompatibilityInfo) null); 157 } 158 159 /** 160 * Creates a new Resources object with CompatibilityInfo. 161 * 162 * @param assets Previously created AssetManager. 163 * @param metrics Current display metrics to consider when 164 * selecting/computing resource values. 165 * @param config Desired device configuration to consider when 166 * selecting/computing resource values (optional). 167 * @param compInfo this resource's compatibility info. It will use the default compatibility 168 * info when it's null. 169 * @hide 170 */ 171 public Resources(AssetManager assets, DisplayMetrics metrics, 172 Configuration config, CompatibilityInfo compInfo) { 173 mAssets = assets; 174 mMetrics.setToDefaults(); 175 if (compInfo == null) { 176 mCompatibilityInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 177 } else { 178 mCompatibilityInfo = compInfo; 179 } 180 updateConfiguration(config, metrics); 181 assets.ensureStringBlocks(); 182 } 183 184 /** 185 * Return a global shared Resources object that provides access to only 186 * system resources (no application resources), and is not configured for 187 * the current screen (can not use dimension units, does not change based 188 * on orientation, etc). 189 */ 190 public static Resources getSystem() { 191 synchronized (mSync) { 192 Resources ret = mSystem; 193 if (ret == null) { 194 ret = new Resources(); 195 mSystem = ret; 196 } 197 198 return ret; 199 } 200 } 201 202 /** 203 * Return the string value associated with a particular resource ID. The 204 * returned object will be a String if this is a plain string; it will be 205 * some other type of CharSequence if it is styled. 206 * {@more} 207 * 208 * @param id The desired resource identifier, as generated by the aapt 209 * tool. This integer encodes the package, type, and resource 210 * entry. The value 0 is an invalid identifier. 211 * 212 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 213 * 214 * @return CharSequence The string data associated with the resource, plus 215 * possibly styled text information. 216 */ 217 public CharSequence getText(int id) throws NotFoundException { 218 CharSequence res = mAssets.getResourceText(id); 219 if (res != null) { 220 return res; 221 } 222 throw new NotFoundException("String resource ID #0x" 223 + Integer.toHexString(id)); 224 } 225 226 /** 227 * Return the character sequence associated with a particular resource ID for a particular 228 * numerical quantity. 229 * 230 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 231 * Resources</a> for more on quantity strings. 232 * 233 * @param id The desired resource identifier, as generated by the aapt 234 * tool. This integer encodes the package, type, and resource 235 * entry. The value 0 is an invalid identifier. 236 * @param quantity The number used to get the correct string for the current language's 237 * plural rules. 238 * 239 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 240 * 241 * @return CharSequence The string data associated with the resource, plus 242 * possibly styled text information. 243 */ 244 public CharSequence getQuantityText(int id, int quantity) throws NotFoundException { 245 NativePluralRules rule = getPluralRule(); 246 CharSequence res = mAssets.getResourceBagText(id, 247 attrForQuantityCode(rule.quantityForInt(quantity))); 248 if (res != null) { 249 return res; 250 } 251 res = mAssets.getResourceBagText(id, ID_OTHER); 252 if (res != null) { 253 return res; 254 } 255 throw new NotFoundException("Plural resource ID #0x" + Integer.toHexString(id) 256 + " quantity=" + quantity 257 + " item=" + stringForQuantityCode(rule.quantityForInt(quantity))); 258 } 259 260 private NativePluralRules getPluralRule() { 261 synchronized (mSync) { 262 if (mPluralRule == null) { 263 mPluralRule = NativePluralRules.forLocale(mConfiguration.locale); 264 } 265 return mPluralRule; 266 } 267 } 268 269 private static int attrForQuantityCode(int quantityCode) { 270 switch (quantityCode) { 271 case NativePluralRules.ZERO: return 0x01000005; 272 case NativePluralRules.ONE: return 0x01000006; 273 case NativePluralRules.TWO: return 0x01000007; 274 case NativePluralRules.FEW: return 0x01000008; 275 case NativePluralRules.MANY: return 0x01000009; 276 default: return ID_OTHER; 277 } 278 } 279 280 private static String stringForQuantityCode(int quantityCode) { 281 switch (quantityCode) { 282 case NativePluralRules.ZERO: return "zero"; 283 case NativePluralRules.ONE: return "one"; 284 case NativePluralRules.TWO: return "two"; 285 case NativePluralRules.FEW: return "few"; 286 case NativePluralRules.MANY: return "many"; 287 default: return "other"; 288 } 289 } 290 291 /** 292 * Return the string value associated with a particular resource ID. It 293 * will be stripped of any styled text information. 294 * {@more} 295 * 296 * @param id The desired resource identifier, as generated by the aapt 297 * tool. This integer encodes the package, type, and resource 298 * entry. The value 0 is an invalid identifier. 299 * 300 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 301 * 302 * @return String The string data associated with the resource, 303 * stripped of styled text information. 304 */ 305 public String getString(int id) throws NotFoundException { 306 CharSequence res = getText(id); 307 if (res != null) { 308 return res.toString(); 309 } 310 throw new NotFoundException("String resource ID #0x" 311 + Integer.toHexString(id)); 312 } 313 314 315 /** 316 * Return the string value associated with a particular resource ID, 317 * substituting the format arguments as defined in {@link java.util.Formatter} 318 * and {@link java.lang.String#format}. It will be stripped of any styled text 319 * information. 320 * {@more} 321 * 322 * @param id The desired resource identifier, as generated by the aapt 323 * tool. This integer encodes the package, type, and resource 324 * entry. The value 0 is an invalid identifier. 325 * 326 * @param formatArgs The format arguments that will be used for substitution. 327 * 328 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 329 * 330 * @return String The string data associated with the resource, 331 * stripped of styled text information. 332 */ 333 public String getString(int id, Object... formatArgs) throws NotFoundException { 334 String raw = getString(id); 335 return String.format(mConfiguration.locale, raw, formatArgs); 336 } 337 338 /** 339 * Return the string value associated with a particular resource ID for a particular 340 * numerical quantity, substituting the format arguments as defined in 341 * {@link java.util.Formatter} and {@link java.lang.String#format}. It will be 342 * stripped of any styled text information. 343 * {@more} 344 * 345 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 346 * Resources</a> for more on quantity strings. 347 * 348 * @param id The desired resource identifier, as generated by the aapt 349 * tool. This integer encodes the package, type, and resource 350 * entry. The value 0 is an invalid identifier. 351 * @param quantity The number used to get the correct string for the current language's 352 * plural rules. 353 * @param formatArgs The format arguments that will be used for substitution. 354 * 355 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 356 * 357 * @return String The string data associated with the resource, 358 * stripped of styled text information. 359 */ 360 public String getQuantityString(int id, int quantity, Object... formatArgs) 361 throws NotFoundException { 362 String raw = getQuantityText(id, quantity).toString(); 363 return String.format(mConfiguration.locale, raw, formatArgs); 364 } 365 366 /** 367 * Return the string value associated with a particular resource ID for a particular 368 * numerical quantity. 369 * 370 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 371 * Resources</a> for more on quantity strings. 372 * 373 * @param id The desired resource identifier, as generated by the aapt 374 * tool. This integer encodes the package, type, and resource 375 * entry. The value 0 is an invalid identifier. 376 * @param quantity The number used to get the correct string for the current language's 377 * plural rules. 378 * 379 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 380 * 381 * @return String The string data associated with the resource, 382 * stripped of styled text information. 383 */ 384 public String getQuantityString(int id, int quantity) throws NotFoundException { 385 return getQuantityText(id, quantity).toString(); 386 } 387 388 /** 389 * Return the string value associated with a particular resource ID. The 390 * returned object will be a String if this is a plain string; it will be 391 * some other type of CharSequence if it is styled. 392 * 393 * @param id The desired resource identifier, as generated by the aapt 394 * tool. This integer encodes the package, type, and resource 395 * entry. The value 0 is an invalid identifier. 396 * 397 * @param def The default CharSequence to return. 398 * 399 * @return CharSequence The string data associated with the resource, plus 400 * possibly styled text information, or def if id is 0 or not found. 401 */ 402 public CharSequence getText(int id, CharSequence def) { 403 CharSequence res = id != 0 ? mAssets.getResourceText(id) : null; 404 return res != null ? res : def; 405 } 406 407 /** 408 * Return the styled text array associated with a particular resource ID. 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 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 415 * 416 * @return The styled text array associated with the resource. 417 */ 418 public CharSequence[] getTextArray(int id) throws NotFoundException { 419 CharSequence[] res = mAssets.getResourceTextArray(id); 420 if (res != null) { 421 return res; 422 } 423 throw new NotFoundException("Text array resource ID #0x" 424 + Integer.toHexString(id)); 425 } 426 427 /** 428 * Return the string array associated with a particular resource ID. 429 * 430 * @param id The desired resource identifier, as generated by the aapt 431 * tool. This integer encodes the package, type, and resource 432 * entry. The value 0 is an invalid identifier. 433 * 434 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 435 * 436 * @return The string array associated with the resource. 437 */ 438 public String[] getStringArray(int id) throws NotFoundException { 439 String[] res = mAssets.getResourceStringArray(id); 440 if (res != null) { 441 return res; 442 } 443 throw new NotFoundException("String array resource ID #0x" 444 + Integer.toHexString(id)); 445 } 446 447 /** 448 * Return the int array associated with a particular resource ID. 449 * 450 * @param id The desired resource identifier, as generated by the aapt 451 * tool. This integer encodes the package, type, and resource 452 * entry. The value 0 is an invalid identifier. 453 * 454 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 455 * 456 * @return The int array associated with the resource. 457 */ 458 public int[] getIntArray(int id) throws NotFoundException { 459 int[] res = mAssets.getArrayIntResource(id); 460 if (res != null) { 461 return res; 462 } 463 throw new NotFoundException("Int array resource ID #0x" 464 + Integer.toHexString(id)); 465 } 466 467 /** 468 * Return an array of heterogeneous values. 469 * 470 * @param id The desired resource identifier, as generated by the aapt 471 * tool. This integer encodes the package, type, and resource 472 * entry. The value 0 is an invalid identifier. 473 * 474 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 475 * 476 * @return Returns a TypedArray holding an array of the array values. 477 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 478 * when done with it. 479 */ 480 public TypedArray obtainTypedArray(int id) throws NotFoundException { 481 int len = mAssets.getArraySize(id); 482 if (len < 0) { 483 throw new NotFoundException("Array resource ID #0x" 484 + Integer.toHexString(id)); 485 } 486 487 TypedArray array = getCachedStyledAttributes(len); 488 array.mLength = mAssets.retrieveArray(id, array.mData); 489 array.mIndices[0] = 0; 490 491 return array; 492 } 493 494 /** 495 * Retrieve a dimensional for a particular resource ID. Unit 496 * conversions are based on the current {@link DisplayMetrics} associated 497 * with the resources. 498 * 499 * @param id The desired resource identifier, as generated by the aapt 500 * tool. This integer encodes the package, type, and resource 501 * entry. The value 0 is an invalid identifier. 502 * 503 * @return Resource dimension value multiplied by the appropriate 504 * metric. 505 * 506 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 507 * 508 * @see #getDimensionPixelOffset 509 * @see #getDimensionPixelSize 510 */ 511 public float getDimension(int id) throws NotFoundException { 512 synchronized (mTmpValue) { 513 TypedValue value = mTmpValue; 514 getValue(id, value, true); 515 if (value.type == TypedValue.TYPE_DIMENSION) { 516 return TypedValue.complexToDimension(value.data, mMetrics); 517 } 518 throw new NotFoundException( 519 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 520 + Integer.toHexString(value.type) + " is not valid"); 521 } 522 } 523 524 /** 525 * Retrieve a dimensional for a particular resource ID for use 526 * as an offset in raw pixels. This is the same as 527 * {@link #getDimension}, except the returned value is converted to 528 * integer pixels for you. An offset conversion involves simply 529 * truncating the base value to an integer. 530 * 531 * @param id The desired resource identifier, as generated by the aapt 532 * tool. This integer encodes the package, type, and resource 533 * entry. The value 0 is an invalid identifier. 534 * 535 * @return Resource dimension value multiplied by the appropriate 536 * metric and truncated to integer pixels. 537 * 538 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 539 * 540 * @see #getDimension 541 * @see #getDimensionPixelSize 542 */ 543 public int getDimensionPixelOffset(int id) throws NotFoundException { 544 synchronized (mTmpValue) { 545 TypedValue value = mTmpValue; 546 getValue(id, value, true); 547 if (value.type == TypedValue.TYPE_DIMENSION) { 548 return TypedValue.complexToDimensionPixelOffset( 549 value.data, mMetrics); 550 } 551 throw new NotFoundException( 552 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 553 + Integer.toHexString(value.type) + " is not valid"); 554 } 555 } 556 557 /** 558 * Retrieve a dimensional for a particular resource ID for use 559 * as a size in raw pixels. This is the same as 560 * {@link #getDimension}, except the returned value is converted to 561 * integer pixels for use as a size. A size conversion involves 562 * rounding the base value, and ensuring that a non-zero base value 563 * is at least one pixel in size. 564 * 565 * @param id The desired resource identifier, as generated by the aapt 566 * tool. This integer encodes the package, type, and resource 567 * entry. The value 0 is an invalid identifier. 568 * 569 * @return Resource dimension value multiplied by the appropriate 570 * metric and truncated to integer pixels. 571 * 572 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 573 * 574 * @see #getDimension 575 * @see #getDimensionPixelOffset 576 */ 577 public int getDimensionPixelSize(int id) throws NotFoundException { 578 synchronized (mTmpValue) { 579 TypedValue value = mTmpValue; 580 getValue(id, value, true); 581 if (value.type == TypedValue.TYPE_DIMENSION) { 582 return TypedValue.complexToDimensionPixelSize( 583 value.data, mMetrics); 584 } 585 throw new NotFoundException( 586 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 587 + Integer.toHexString(value.type) + " is not valid"); 588 } 589 } 590 591 /** 592 * Retrieve a fractional unit for a particular resource ID. 593 * 594 * @param id The desired resource identifier, as generated by the aapt 595 * tool. This integer encodes the package, type, and resource 596 * entry. The value 0 is an invalid identifier. 597 * @param base The base value of this fraction. In other words, a 598 * standard fraction is multiplied by this value. 599 * @param pbase The parent base value of this fraction. In other 600 * words, a parent fraction (nn%p) is multiplied by this 601 * value. 602 * 603 * @return Attribute fractional value multiplied by the appropriate 604 * base value. 605 * 606 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 607 */ 608 public float getFraction(int id, int base, int pbase) { 609 synchronized (mTmpValue) { 610 TypedValue value = mTmpValue; 611 getValue(id, value, true); 612 if (value.type == TypedValue.TYPE_FRACTION) { 613 return TypedValue.complexToFraction(value.data, base, pbase); 614 } 615 throw new NotFoundException( 616 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 617 + Integer.toHexString(value.type) + " is not valid"); 618 } 619 } 620 621 /** 622 * Return a drawable object associated with a particular resource ID. 623 * Various types of objects will be returned depending on the underlying 624 * resource -- for example, a solid color, PNG image, scalable image, etc. 625 * The Drawable API hides these implementation details. 626 * 627 * @param id The desired resource identifier, as generated by the aapt 628 * tool. This integer encodes the package, type, and resource 629 * entry. The value 0 is an invalid identifier. 630 * 631 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 632 * 633 * @return Drawable An object that can be used to draw this resource. 634 */ 635 public Drawable getDrawable(int id) throws NotFoundException { 636 synchronized (mTmpValue) { 637 TypedValue value = mTmpValue; 638 getValue(id, value, true); 639 return loadDrawable(value, id); 640 } 641 } 642 643 /** 644 * Return a drawable object associated with a particular resource ID for the 645 * given screen density in DPI. This will set the drawable's density to be 646 * the device's density multiplied by the ratio of actual drawable density 647 * to requested density. This allows the drawable to be scaled up to the 648 * correct size if needed. Various types of objects will be returned 649 * depending on the underlying resource -- for example, a solid color, PNG 650 * image, scalable image, etc. The Drawable API hides these implementation 651 * details. 652 * 653 * @param id The desired resource identifier, as generated by the aapt tool. 654 * This integer encodes the package, type, and resource entry. 655 * The value 0 is an invalid identifier. 656 * @param density the desired screen density indicated by the resource as 657 * found in {@link DisplayMetrics}. 658 * @throws NotFoundException Throws NotFoundException if the given ID does 659 * not exist. 660 * @return Drawable An object that can be used to draw this resource. 661 * @hide 662 */ 663 public Drawable getDrawableForDensity(int id, int density) throws NotFoundException { 664 synchronized (mTmpValue) { 665 TypedValue value = mTmpValue; 666 getValueForDensity(id, density, value, true); 667 668 /* 669 * Pretend the requested density is actually the display density. If 670 * the drawable returned is not the requested density, then force it 671 * to be scaled later by dividing its density by the ratio of 672 * requested density to actual device density. Drawables that have 673 * undefined density or no density don't need to be handled here. 674 */ 675 if (value.density > 0 && value.density != TypedValue.DENSITY_NONE) { 676 if (value.density == density) { 677 value.density = DisplayMetrics.DENSITY_DEVICE; 678 } else { 679 value.density = (value.density * DisplayMetrics.DENSITY_DEVICE) / density; 680 } 681 } 682 683 return loadDrawable(value, id); 684 } 685 } 686 687 /** 688 * Return a movie object associated with the particular resource ID. 689 * @param id The desired resource identifier, as generated by the aapt 690 * tool. This integer encodes the package, type, and resource 691 * entry. The value 0 is an invalid identifier. 692 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 693 * 694 */ 695 public Movie getMovie(int id) throws NotFoundException { 696 InputStream is = openRawResource(id); 697 Movie movie = Movie.decodeStream(is); 698 try { 699 is.close(); 700 } 701 catch (java.io.IOException e) { 702 // don't care, since the return value is valid 703 } 704 return movie; 705 } 706 707 /** 708 * Return a color integer associated with a particular resource ID. 709 * If the resource holds a complex 710 * {@link android.content.res.ColorStateList}, then the default color from 711 * the set is returned. 712 * 713 * @param id The desired resource identifier, as generated by the aapt 714 * tool. This integer encodes the package, type, and resource 715 * entry. The value 0 is an invalid identifier. 716 * 717 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 718 * 719 * @return Returns a single color value in the form 0xAARRGGBB. 720 */ 721 public int getColor(int id) throws NotFoundException { 722 synchronized (mTmpValue) { 723 TypedValue value = mTmpValue; 724 getValue(id, value, true); 725 if (value.type >= TypedValue.TYPE_FIRST_INT 726 && value.type <= TypedValue.TYPE_LAST_INT) { 727 return value.data; 728 } else if (value.type == TypedValue.TYPE_STRING) { 729 ColorStateList csl = loadColorStateList(mTmpValue, id); 730 return csl.getDefaultColor(); 731 } 732 throw new NotFoundException( 733 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 734 + Integer.toHexString(value.type) + " is not valid"); 735 } 736 } 737 738 /** 739 * Return a color state list associated with a particular resource ID. The 740 * resource may contain either a single raw color value, or a complex 741 * {@link android.content.res.ColorStateList} holding multiple possible colors. 742 * 743 * @param id The desired resource identifier of a {@link ColorStateList}, 744 * as generated by the aapt tool. This integer encodes the package, type, and resource 745 * entry. The value 0 is an invalid identifier. 746 * 747 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 748 * 749 * @return Returns a ColorStateList object containing either a single 750 * solid color or multiple colors that can be selected based on a state. 751 */ 752 public ColorStateList getColorStateList(int id) throws NotFoundException { 753 synchronized (mTmpValue) { 754 TypedValue value = mTmpValue; 755 getValue(id, value, true); 756 return loadColorStateList(value, id); 757 } 758 } 759 760 /** 761 * Return a boolean associated with a particular resource ID. This can be 762 * used with any integral resource value, and will return true if it is 763 * non-zero. 764 * 765 * @param id The desired resource identifier, as generated by the aapt 766 * tool. This integer encodes the package, type, and resource 767 * entry. The value 0 is an invalid identifier. 768 * 769 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 770 * 771 * @return Returns the boolean value contained in the resource. 772 */ 773 public boolean getBoolean(int id) throws NotFoundException { 774 synchronized (mTmpValue) { 775 TypedValue value = mTmpValue; 776 getValue(id, value, true); 777 if (value.type >= TypedValue.TYPE_FIRST_INT 778 && value.type <= TypedValue.TYPE_LAST_INT) { 779 return value.data != 0; 780 } 781 throw new NotFoundException( 782 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 783 + Integer.toHexString(value.type) + " is not valid"); 784 } 785 } 786 787 /** 788 * Return an integer associated with a particular resource ID. 789 * 790 * @param id The desired resource identifier, as generated by the aapt 791 * tool. This integer encodes the package, type, and resource 792 * entry. The value 0 is an invalid identifier. 793 * 794 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 795 * 796 * @return Returns the integer value contained in the resource. 797 */ 798 public int getInteger(int id) throws NotFoundException { 799 synchronized (mTmpValue) { 800 TypedValue value = mTmpValue; 801 getValue(id, value, true); 802 if (value.type >= TypedValue.TYPE_FIRST_INT 803 && value.type <= TypedValue.TYPE_LAST_INT) { 804 return value.data; 805 } 806 throw new NotFoundException( 807 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 808 + Integer.toHexString(value.type) + " is not valid"); 809 } 810 } 811 812 /** 813 * Return an XmlResourceParser through which you can read a view layout 814 * description for the given resource ID. This parser has limited 815 * functionality -- in particular, you can't change its input, and only 816 * the high-level events are available. 817 * 818 * <p>This function is really a simple wrapper for calling 819 * {@link #getXml} with a layout resource. 820 * 821 * @param id The desired resource identifier, as generated by the aapt 822 * tool. This integer encodes the package, type, and resource 823 * entry. The value 0 is an invalid identifier. 824 * 825 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 826 * 827 * @return A new parser object through which you can read 828 * the XML data. 829 * 830 * @see #getXml 831 */ 832 public XmlResourceParser getLayout(int id) throws NotFoundException { 833 return loadXmlResourceParser(id, "layout"); 834 } 835 836 /** 837 * Return an XmlResourceParser through which you can read an animation 838 * description for the given resource ID. This parser has limited 839 * functionality -- in particular, you can't change its input, and only 840 * the high-level events are available. 841 * 842 * <p>This function is really a simple wrapper for calling 843 * {@link #getXml} with an animation resource. 844 * 845 * @param id The desired resource identifier, as generated by the aapt 846 * tool. This integer encodes the package, type, and resource 847 * entry. The value 0 is an invalid identifier. 848 * 849 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 850 * 851 * @return A new parser object through which you can read 852 * the XML data. 853 * 854 * @see #getXml 855 */ 856 public XmlResourceParser getAnimation(int id) throws NotFoundException { 857 return loadXmlResourceParser(id, "anim"); 858 } 859 860 /** 861 * Return an XmlResourceParser through which you can read a generic XML 862 * resource for the given resource ID. 863 * 864 * <p>The XmlPullParser implementation returned here has some limited 865 * functionality. In particular, you can't change its input, and only 866 * high-level parsing events are available (since the document was 867 * pre-parsed for you at build time, which involved merging text and 868 * stripping comments). 869 * 870 * @param id The desired resource identifier, as generated by the aapt 871 * tool. This integer encodes the package, type, and resource 872 * entry. The value 0 is an invalid identifier. 873 * 874 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 875 * 876 * @return A new parser object through which you can read 877 * the XML data. 878 * 879 * @see android.util.AttributeSet 880 */ 881 public XmlResourceParser getXml(int id) throws NotFoundException { 882 return loadXmlResourceParser(id, "xml"); 883 } 884 885 /** 886 * Open a data stream for reading a raw resource. This can only be used 887 * with resources whose value is the name of an asset files -- that is, it can be 888 * used to open drawable, sound, and raw resources; it will fail on string 889 * and color resources. 890 * 891 * @param id The resource identifier to open, as generated by the appt 892 * tool. 893 * 894 * @return InputStream Access to the resource data. 895 * 896 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 897 * 898 */ 899 public InputStream openRawResource(int id) throws NotFoundException { 900 synchronized (mTmpValue) { 901 return openRawResource(id, mTmpValue); 902 } 903 } 904 905 /** 906 * Open a data stream for reading a raw resource. This can only be used 907 * with resources whose value is the name of an asset file -- that is, it can be 908 * used to open drawable, sound, and raw resources; it will fail on string 909 * and color resources. 910 * 911 * @param id The resource identifier to open, as generated by the appt tool. 912 * @param value The TypedValue object to hold the resource information. 913 * 914 * @return InputStream Access to the resource data. 915 * 916 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 917 */ 918 public InputStream openRawResource(int id, TypedValue value) throws NotFoundException { 919 getValue(id, value, true); 920 921 try { 922 return mAssets.openNonAsset(value.assetCookie, value.string.toString(), 923 AssetManager.ACCESS_STREAMING); 924 } catch (Exception e) { 925 NotFoundException rnf = new NotFoundException("File " + value.string.toString() + 926 " from drawable resource ID #0x" + Integer.toHexString(id)); 927 rnf.initCause(e); 928 throw rnf; 929 } 930 } 931 932 /** 933 * Open a file descriptor for reading a raw resource. This can only be used 934 * with resources whose value is the name of an asset files -- that is, it can be 935 * used to open drawable, sound, and raw resources; it will fail on string 936 * and color resources. 937 * 938 * <p>This function only works for resources that are stored in the package 939 * as uncompressed data, which typically includes things like mp3 files 940 * and png images. 941 * 942 * @param id The resource identifier to open, as generated by the appt 943 * tool. 944 * 945 * @return AssetFileDescriptor A new file descriptor you can use to read 946 * the resource. This includes the file descriptor itself, as well as the 947 * offset and length of data where the resource appears in the file. A 948 * null is returned if the file exists but is compressed. 949 * 950 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 951 * 952 */ 953 public AssetFileDescriptor openRawResourceFd(int id) throws NotFoundException { 954 synchronized (mTmpValue) { 955 TypedValue value = mTmpValue; 956 getValue(id, value, true); 957 958 try { 959 return mAssets.openNonAssetFd( 960 value.assetCookie, value.string.toString()); 961 } catch (Exception e) { 962 NotFoundException rnf = new NotFoundException( 963 "File " + value.string.toString() 964 + " from drawable resource ID #0x" 965 + Integer.toHexString(id)); 966 rnf.initCause(e); 967 throw rnf; 968 } 969 970 } 971 } 972 973 /** 974 * Return the raw data associated with a particular resource ID. 975 * 976 * @param id The desired resource identifier, as generated by the aapt 977 * tool. This integer encodes the package, type, and resource 978 * entry. The value 0 is an invalid identifier. 979 * @param outValue Object in which to place the resource data. 980 * @param resolveRefs If true, a resource that is a reference to another 981 * resource will be followed so that you receive the 982 * actual final resource data. If false, the TypedValue 983 * will be filled in with the reference itself. 984 * 985 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 986 * 987 */ 988 public void getValue(int id, TypedValue outValue, boolean resolveRefs) 989 throws NotFoundException { 990 boolean found = mAssets.getResourceValue(id, 0, outValue, resolveRefs); 991 if (found) { 992 return; 993 } 994 throw new NotFoundException("Resource ID #0x" 995 + Integer.toHexString(id)); 996 } 997 998 /** 999 * Get the raw value associated with a resource with associated density. 1000 * 1001 * @param id resource identifier 1002 * @param density density in DPI 1003 * @param resolveRefs If true, a resource that is a reference to another 1004 * resource will be followed so that you receive the actual final 1005 * resource data. If false, the TypedValue will be filled in with 1006 * the reference itself. 1007 * @throws NotFoundException Throws NotFoundException if the given ID does 1008 * not exist. 1009 * @see #getValue(String, TypedValue, boolean) 1010 * @hide 1011 */ 1012 public void getValueForDensity(int id, int density, TypedValue outValue, boolean resolveRefs) 1013 throws NotFoundException { 1014 boolean found = mAssets.getResourceValue(id, density, outValue, resolveRefs); 1015 if (found) { 1016 return; 1017 } 1018 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id)); 1019 } 1020 1021 /** 1022 * Return the raw data associated with a particular resource ID. 1023 * See getIdentifier() for information on how names are mapped to resource 1024 * IDs, and getString(int) for information on how string resources are 1025 * retrieved. 1026 * 1027 * <p>Note: use of this function is discouraged. It is much more 1028 * efficient to retrieve resources by identifier than by name. 1029 * 1030 * @param name The name of the desired resource. This is passed to 1031 * getIdentifier() with a default type of "string". 1032 * @param outValue Object in which to place the resource data. 1033 * @param resolveRefs If true, a resource that is a reference to another 1034 * resource will be followed so that you receive the 1035 * actual final resource data. If false, the TypedValue 1036 * will be filled in with the reference itself. 1037 * 1038 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1039 * 1040 */ 1041 public void getValue(String name, TypedValue outValue, boolean resolveRefs) 1042 throws NotFoundException { 1043 int id = getIdentifier(name, "string", null); 1044 if (id != 0) { 1045 getValue(id, outValue, resolveRefs); 1046 return; 1047 } 1048 throw new NotFoundException("String resource name " + name); 1049 } 1050 1051 /** 1052 * This class holds the current attribute values for a particular theme. 1053 * In other words, a Theme is a set of values for resource attributes; 1054 * these are used in conjunction with {@link TypedArray} 1055 * to resolve the final value for an attribute. 1056 * 1057 * <p>The Theme's attributes come into play in two ways: (1) a styled 1058 * attribute can explicit reference a value in the theme through the 1059 * "?themeAttribute" syntax; (2) if no value has been defined for a 1060 * particular styled attribute, as a last resort we will try to find that 1061 * attribute's value in the Theme. 1062 * 1063 * <p>You will normally use the {@link #obtainStyledAttributes} APIs to 1064 * retrieve XML attributes with style and theme information applied. 1065 */ 1066 public final class Theme { 1067 /** 1068 * Place new attribute values into the theme. The style resource 1069 * specified by <var>resid</var> will be retrieved from this Theme's 1070 * resources, its values placed into the Theme object. 1071 * 1072 * <p>The semantics of this function depends on the <var>force</var> 1073 * argument: If false, only values that are not already defined in 1074 * the theme will be copied from the system resource; otherwise, if 1075 * any of the style's attributes are already defined in the theme, the 1076 * current values in the theme will be overwritten. 1077 * 1078 * @param resid The resource ID of a style resource from which to 1079 * obtain attribute values. 1080 * @param force If true, values in the style resource will always be 1081 * used in the theme; otherwise, they will only be used 1082 * if not already defined in the theme. 1083 */ 1084 public void applyStyle(int resid, boolean force) { 1085 AssetManager.applyThemeStyle(mTheme, resid, force); 1086 } 1087 1088 /** 1089 * Set this theme to hold the same contents as the theme 1090 * <var>other</var>. If both of these themes are from the same 1091 * Resources object, they will be identical after this function 1092 * returns. If they are from different Resources, only the resources 1093 * they have in common will be set in this theme. 1094 * 1095 * @param other The existing Theme to copy from. 1096 */ 1097 public void setTo(Theme other) { 1098 AssetManager.copyTheme(mTheme, other.mTheme); 1099 } 1100 1101 /** 1102 * Return a StyledAttributes holding the values defined by 1103 * <var>Theme</var> which are listed in <var>attrs</var>. 1104 * 1105 * <p>Be sure to call StyledAttributes.recycle() when you are done with 1106 * the array. 1107 * 1108 * @param attrs The desired attributes. 1109 * 1110 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1111 * 1112 * @return Returns a TypedArray holding an array of the attribute values. 1113 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1114 * when done with it. 1115 * 1116 * @see Resources#obtainAttributes 1117 * @see #obtainStyledAttributes(int, int[]) 1118 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1119 */ 1120 public TypedArray obtainStyledAttributes(int[] attrs) { 1121 int len = attrs.length; 1122 TypedArray array = getCachedStyledAttributes(len); 1123 array.mRsrcs = attrs; 1124 AssetManager.applyStyle(mTheme, 0, 0, 0, attrs, 1125 array.mData, array.mIndices); 1126 return array; 1127 } 1128 1129 /** 1130 * Return a StyledAttributes holding the values defined by the style 1131 * resource <var>resid</var> which are listed in <var>attrs</var>. 1132 * 1133 * <p>Be sure to call StyledAttributes.recycle() when you are done with 1134 * the array. 1135 * 1136 * @param resid The desired style resource. 1137 * @param attrs The desired attributes in the style. 1138 * 1139 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1140 * 1141 * @return Returns a TypedArray holding an array of the attribute values. 1142 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1143 * when done with it. 1144 * 1145 * @see Resources#obtainAttributes 1146 * @see #obtainStyledAttributes(int[]) 1147 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1148 */ 1149 public TypedArray obtainStyledAttributes(int resid, int[] attrs) 1150 throws NotFoundException { 1151 int len = attrs.length; 1152 TypedArray array = getCachedStyledAttributes(len); 1153 array.mRsrcs = attrs; 1154 1155 AssetManager.applyStyle(mTheme, 0, resid, 0, attrs, 1156 array.mData, array.mIndices); 1157 if (false) { 1158 int[] data = array.mData; 1159 1160 System.out.println("**********************************************************"); 1161 System.out.println("**********************************************************"); 1162 System.out.println("**********************************************************"); 1163 System.out.println("Attributes:"); 1164 String s = " Attrs:"; 1165 int i; 1166 for (i=0; i<attrs.length; i++) { 1167 s = s + " 0x" + Integer.toHexString(attrs[i]); 1168 } 1169 System.out.println(s); 1170 s = " Found:"; 1171 TypedValue value = new TypedValue(); 1172 for (i=0; i<attrs.length; i++) { 1173 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1174 value.type = data[d+AssetManager.STYLE_TYPE]; 1175 value.data = data[d+AssetManager.STYLE_DATA]; 1176 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1177 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1178 s = s + " 0x" + Integer.toHexString(attrs[i]) 1179 + "=" + value; 1180 } 1181 System.out.println(s); 1182 } 1183 return array; 1184 } 1185 1186 /** 1187 * Return a StyledAttributes holding the attribute values in 1188 * <var>set</var> 1189 * that are listed in <var>attrs</var>. In addition, if the given 1190 * AttributeSet specifies a style class (through the "style" attribute), 1191 * that style will be applied on top of the base attributes it defines. 1192 * 1193 * <p>Be sure to call StyledAttributes.recycle() when you are done with 1194 * the array. 1195 * 1196 * <p>When determining the final value of a particular attribute, there 1197 * are four inputs that come into play:</p> 1198 * 1199 * <ol> 1200 * <li> Any attribute values in the given AttributeSet. 1201 * <li> The style resource specified in the AttributeSet (named 1202 * "style"). 1203 * <li> The default style specified by <var>defStyleAttr</var> and 1204 * <var>defStyleRes</var> 1205 * <li> The base values in this theme. 1206 * </ol> 1207 * 1208 * <p>Each of these inputs is considered in-order, with the first listed 1209 * taking precedence over the following ones. In other words, if in the 1210 * AttributeSet you have supplied <code><Button 1211 * textColor="#ff000000"></code>, then the button's text will 1212 * <em>always</em> be black, regardless of what is specified in any of 1213 * the styles. 1214 * 1215 * @param set The base set of attribute values. May be null. 1216 * @param attrs The desired attributes to be retrieved. 1217 * @param defStyleAttr An attribute in the current theme that contains a 1218 * reference to a style resource that supplies 1219 * defaults values for the StyledAttributes. Can be 1220 * 0 to not look for defaults. 1221 * @param defStyleRes A resource identifier of a style resource that 1222 * supplies default values for the StyledAttributes, 1223 * used only if defStyleAttr is 0 or can not be found 1224 * in the theme. Can be 0 to not look for defaults. 1225 * 1226 * @return Returns a TypedArray holding an array of the attribute values. 1227 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1228 * when done with it. 1229 * 1230 * @see Resources#obtainAttributes 1231 * @see #obtainStyledAttributes(int[]) 1232 * @see #obtainStyledAttributes(int, int[]) 1233 */ 1234 public TypedArray obtainStyledAttributes(AttributeSet set, 1235 int[] attrs, int defStyleAttr, int defStyleRes) { 1236 int len = attrs.length; 1237 TypedArray array = getCachedStyledAttributes(len); 1238 1239 // XXX note that for now we only work with compiled XML files. 1240 // To support generic XML files we will need to manually parse 1241 // out the attributes from the XML file (applying type information 1242 // contained in the resources and such). 1243 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1244 AssetManager.applyStyle( 1245 mTheme, defStyleAttr, defStyleRes, 1246 parser != null ? parser.mParseState : 0, attrs, 1247 array.mData, array.mIndices); 1248 1249 array.mRsrcs = attrs; 1250 array.mXml = parser; 1251 1252 if (false) { 1253 int[] data = array.mData; 1254 1255 System.out.println("Attributes:"); 1256 String s = " Attrs:"; 1257 int i; 1258 for (i=0; i<set.getAttributeCount(); i++) { 1259 s = s + " " + set.getAttributeName(i); 1260 int id = set.getAttributeNameResource(i); 1261 if (id != 0) { 1262 s = s + "(0x" + Integer.toHexString(id) + ")"; 1263 } 1264 s = s + "=" + set.getAttributeValue(i); 1265 } 1266 System.out.println(s); 1267 s = " Found:"; 1268 TypedValue value = new TypedValue(); 1269 for (i=0; i<attrs.length; i++) { 1270 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1271 value.type = data[d+AssetManager.STYLE_TYPE]; 1272 value.data = data[d+AssetManager.STYLE_DATA]; 1273 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1274 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1275 s = s + " 0x" + Integer.toHexString(attrs[i]) 1276 + "=" + value; 1277 } 1278 System.out.println(s); 1279 } 1280 1281 return array; 1282 } 1283 1284 /** 1285 * Retrieve the value of an attribute in the Theme. The contents of 1286 * <var>outValue</var> are ultimately filled in by 1287 * {@link Resources#getValue}. 1288 * 1289 * @param resid The resource identifier of the desired theme 1290 * attribute. 1291 * @param outValue Filled in with the ultimate resource value supplied 1292 * by the attribute. 1293 * @param resolveRefs If true, resource references will be walked; if 1294 * false, <var>outValue</var> may be a 1295 * TYPE_REFERENCE. In either case, it will never 1296 * be a TYPE_ATTRIBUTE. 1297 * 1298 * @return boolean Returns true if the attribute was found and 1299 * <var>outValue</var> is valid, else false. 1300 */ 1301 public boolean resolveAttribute(int resid, TypedValue outValue, 1302 boolean resolveRefs) { 1303 boolean got = mAssets.getThemeValue(mTheme, resid, outValue, resolveRefs); 1304 if (false) { 1305 System.out.println( 1306 "resolveAttribute #" + Integer.toHexString(resid) 1307 + " got=" + got + ", type=0x" + Integer.toHexString(outValue.type) 1308 + ", data=0x" + Integer.toHexString(outValue.data)); 1309 } 1310 return got; 1311 } 1312 1313 /** 1314 * Print contents of this theme out to the log. For debugging only. 1315 * 1316 * @param priority The log priority to use. 1317 * @param tag The log tag to use. 1318 * @param prefix Text to prefix each line printed. 1319 */ 1320 public void dump(int priority, String tag, String prefix) { 1321 AssetManager.dumpTheme(mTheme, priority, tag, prefix); 1322 } 1323 1324 protected void finalize() throws Throwable { 1325 super.finalize(); 1326 mAssets.releaseTheme(mTheme); 1327 } 1328 1329 /*package*/ Theme() { 1330 mAssets = Resources.this.mAssets; 1331 mTheme = mAssets.createTheme(); 1332 } 1333 1334 private final AssetManager mAssets; 1335 private final int mTheme; 1336 } 1337 1338 /** 1339 * Generate a new Theme object for this set of Resources. It initially 1340 * starts out empty. 1341 * 1342 * @return Theme The newly created Theme container. 1343 */ 1344 public final Theme newTheme() { 1345 return new Theme(); 1346 } 1347 1348 /** 1349 * Retrieve a set of basic attribute values from an AttributeSet, not 1350 * performing styling of them using a theme and/or style resources. 1351 * 1352 * @param set The current attribute values to retrieve. 1353 * @param attrs The specific attributes to be retrieved. 1354 * @return Returns a TypedArray holding an array of the attribute values. 1355 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1356 * when done with it. 1357 * 1358 * @see Theme#obtainStyledAttributes(AttributeSet, int[], int, int) 1359 */ 1360 public TypedArray obtainAttributes(AttributeSet set, int[] attrs) { 1361 int len = attrs.length; 1362 TypedArray array = getCachedStyledAttributes(len); 1363 1364 // XXX note that for now we only work with compiled XML files. 1365 // To support generic XML files we will need to manually parse 1366 // out the attributes from the XML file (applying type information 1367 // contained in the resources and such). 1368 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1369 mAssets.retrieveAttributes(parser.mParseState, attrs, 1370 array.mData, array.mIndices); 1371 1372 array.mRsrcs = attrs; 1373 array.mXml = parser; 1374 1375 return array; 1376 } 1377 1378 /** 1379 * Store the newly updated configuration. 1380 */ 1381 public void updateConfiguration(Configuration config, 1382 DisplayMetrics metrics) { 1383 synchronized (mTmpValue) { 1384 int configChanges = 0xfffffff; 1385 if (config != null) { 1386 configChanges = mConfiguration.updateFrom(config); 1387 } 1388 if (mConfiguration.locale == null) { 1389 mConfiguration.locale = Locale.getDefault(); 1390 } 1391 if (metrics != null) { 1392 mMetrics.setTo(metrics); 1393 mMetrics.updateMetrics(mCompatibilityInfo, 1394 mConfiguration.orientation, mConfiguration.screenLayout); 1395 } 1396 mMetrics.scaledDensity = mMetrics.density * mConfiguration.fontScale; 1397 1398 String locale = null; 1399 if (mConfiguration.locale != null) { 1400 locale = mConfiguration.locale.getLanguage(); 1401 if (mConfiguration.locale.getCountry() != null) { 1402 locale += "-" + mConfiguration.locale.getCountry(); 1403 } 1404 } 1405 int width, height; 1406 if (mMetrics.widthPixels >= mMetrics.heightPixels) { 1407 width = mMetrics.widthPixels; 1408 height = mMetrics.heightPixels; 1409 } else { 1410 //noinspection SuspiciousNameCombination 1411 width = mMetrics.heightPixels; 1412 //noinspection SuspiciousNameCombination 1413 height = mMetrics.widthPixels; 1414 } 1415 int keyboardHidden = mConfiguration.keyboardHidden; 1416 if (keyboardHidden == Configuration.KEYBOARDHIDDEN_NO 1417 && mConfiguration.hardKeyboardHidden 1418 == Configuration.HARDKEYBOARDHIDDEN_YES) { 1419 keyboardHidden = Configuration.KEYBOARDHIDDEN_SOFT; 1420 } 1421 mAssets.setConfiguration(mConfiguration.mcc, mConfiguration.mnc, 1422 locale, mConfiguration.orientation, 1423 mConfiguration.touchscreen, 1424 (int)(mMetrics.density*160), mConfiguration.keyboard, 1425 keyboardHidden, mConfiguration.navigation, width, height, 1426 mConfiguration.screenLayout, mConfiguration.uiMode, 1427 Build.VERSION.RESOURCES_SDK_INT); 1428 1429 clearDrawableCache(mDrawableCache, configChanges); 1430 clearDrawableCache(mColorDrawableCache, configChanges); 1431 1432 mColorStateListCache.clear(); 1433 1434 flushLayoutCache(); 1435 } 1436 synchronized (mSync) { 1437 if (mPluralRule != null) { 1438 mPluralRule = NativePluralRules.forLocale(config.locale); 1439 } 1440 } 1441 } 1442 1443 private void clearDrawableCache( 1444 LongSparseArray<WeakReference<ConstantState>> cache, 1445 int configChanges) { 1446 int N = cache.size(); 1447 if (DEBUG_CONFIG) { 1448 Log.d(TAG, "Cleaning up drawables config changes: 0x" 1449 + Integer.toHexString(configChanges)); 1450 } 1451 for (int i=0; i<N; i++) { 1452 WeakReference<Drawable.ConstantState> ref = cache.valueAt(i); 1453 if (ref != null) { 1454 Drawable.ConstantState cs = ref.get(); 1455 if (cs != null) { 1456 if (Configuration.needNewResources( 1457 configChanges, cs.getChangingConfigurations())) { 1458 if (DEBUG_CONFIG) { 1459 Log.d(TAG, "FLUSHING #0x" 1460 + Long.toHexString(mDrawableCache.keyAt(i)) 1461 + " / " + cs + " with changes: 0x" 1462 + Integer.toHexString(cs.getChangingConfigurations())); 1463 } 1464 cache.setValueAt(i, null); 1465 } else if (DEBUG_CONFIG) { 1466 Log.d(TAG, "(Keeping #0x" 1467 + Long.toHexString(cache.keyAt(i)) 1468 + " / " + cs + " with changes: 0x" 1469 + Integer.toHexString(cs.getChangingConfigurations()) 1470 + ")"); 1471 } 1472 } 1473 } 1474 } 1475 } 1476 1477 /** 1478 * Update the system resources configuration if they have previously 1479 * been initialized. 1480 * 1481 * @hide 1482 */ 1483 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics) { 1484 if (mSystem != null) { 1485 mSystem.updateConfiguration(config, metrics); 1486 //Log.i(TAG, "Updated system resources " + mSystem 1487 // + ": " + mSystem.getConfiguration()); 1488 } 1489 } 1490 1491 /** 1492 * Return the current display metrics that are in effect for this resource 1493 * object. The returned object should be treated as read-only. 1494 * 1495 * @return The resource's current display metrics. 1496 */ 1497 public DisplayMetrics getDisplayMetrics() { 1498 return mMetrics; 1499 } 1500 1501 /** 1502 * Return the current configuration that is in effect for this resource 1503 * object. The returned object should be treated as read-only. 1504 * 1505 * @return The resource's current configuration. 1506 */ 1507 public Configuration getConfiguration() { 1508 return mConfiguration; 1509 } 1510 1511 /** 1512 * Return the compatibility mode information for the application. 1513 * The returned object should be treated as read-only. 1514 * 1515 * @return compatibility info. null if the app does not require compatibility mode. 1516 * @hide 1517 */ 1518 public CompatibilityInfo getCompatibilityInfo() { 1519 return mCompatibilityInfo; 1520 } 1521 1522 /** 1523 * This is just for testing. 1524 * @hide 1525 */ 1526 public void setCompatibilityInfo(CompatibilityInfo ci) { 1527 mCompatibilityInfo = ci; 1528 updateConfiguration(mConfiguration, mMetrics); 1529 } 1530 1531 /** 1532 * Return a resource identifier for the given resource name. A fully 1533 * qualified resource name is of the form "package:type/entry". The first 1534 * two components (package and type) are optional if defType and 1535 * defPackage, respectively, are specified here. 1536 * 1537 * <p>Note: use of this function is discouraged. It is much more 1538 * efficient to retrieve resources by identifier than by name. 1539 * 1540 * @param name The name of the desired resource. 1541 * @param defType Optional default resource type to find, if "type/" is 1542 * not included in the name. Can be null to require an 1543 * explicit type. 1544 * @param defPackage Optional default package to find, if "package:" is 1545 * not included in the name. Can be null to require an 1546 * explicit package. 1547 * 1548 * @return int The associated resource identifier. Returns 0 if no such 1549 * resource was found. (0 is not a valid resource ID.) 1550 */ 1551 public int getIdentifier(String name, String defType, String defPackage) { 1552 try { 1553 return Integer.parseInt(name); 1554 } catch (Exception e) { 1555 // Ignore 1556 } 1557 return mAssets.getResourceIdentifier(name, defType, defPackage); 1558 } 1559 1560 /** 1561 * Return the full name for a given resource identifier. This name is 1562 * a single string of the form "package:type/entry". 1563 * 1564 * @param resid The resource identifier whose name is to be retrieved. 1565 * 1566 * @return A string holding the name of the resource. 1567 * 1568 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1569 * 1570 * @see #getResourcePackageName 1571 * @see #getResourceTypeName 1572 * @see #getResourceEntryName 1573 */ 1574 public String getResourceName(int resid) throws NotFoundException { 1575 String str = mAssets.getResourceName(resid); 1576 if (str != null) return str; 1577 throw new NotFoundException("Unable to find resource ID #0x" 1578 + Integer.toHexString(resid)); 1579 } 1580 1581 /** 1582 * Return the package name for a given resource identifier. 1583 * 1584 * @param resid The resource identifier whose package name is to be 1585 * retrieved. 1586 * 1587 * @return A string holding the package name of the resource. 1588 * 1589 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1590 * 1591 * @see #getResourceName 1592 */ 1593 public String getResourcePackageName(int resid) throws NotFoundException { 1594 String str = mAssets.getResourcePackageName(resid); 1595 if (str != null) return str; 1596 throw new NotFoundException("Unable to find resource ID #0x" 1597 + Integer.toHexString(resid)); 1598 } 1599 1600 /** 1601 * Return the type name for a given resource identifier. 1602 * 1603 * @param resid The resource identifier whose type name is to be 1604 * retrieved. 1605 * 1606 * @return A string holding the type name of the resource. 1607 * 1608 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1609 * 1610 * @see #getResourceName 1611 */ 1612 public String getResourceTypeName(int resid) throws NotFoundException { 1613 String str = mAssets.getResourceTypeName(resid); 1614 if (str != null) return str; 1615 throw new NotFoundException("Unable to find resource ID #0x" 1616 + Integer.toHexString(resid)); 1617 } 1618 1619 /** 1620 * Return the entry name for a given resource identifier. 1621 * 1622 * @param resid The resource identifier whose entry name is to be 1623 * retrieved. 1624 * 1625 * @return A string holding the entry name of the resource. 1626 * 1627 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1628 * 1629 * @see #getResourceName 1630 */ 1631 public String getResourceEntryName(int resid) throws NotFoundException { 1632 String str = mAssets.getResourceEntryName(resid); 1633 if (str != null) return str; 1634 throw new NotFoundException("Unable to find resource ID #0x" 1635 + Integer.toHexString(resid)); 1636 } 1637 1638 /** 1639 * Parse a series of {@link android.R.styleable#Extra <extra>} tags from 1640 * an XML file. You call this when you are at the parent tag of the 1641 * extra tags, and it will return once all of the child tags have been parsed. 1642 * This will call {@link #parseBundleExtra} for each extra tag encountered. 1643 * 1644 * @param parser The parser from which to retrieve the extras. 1645 * @param outBundle A Bundle in which to place all parsed extras. 1646 * @throws XmlPullParserException 1647 * @throws IOException 1648 */ 1649 public void parseBundleExtras(XmlResourceParser parser, Bundle outBundle) 1650 throws XmlPullParserException, IOException { 1651 int outerDepth = parser.getDepth(); 1652 int type; 1653 while ((type=parser.next()) != XmlPullParser.END_DOCUMENT 1654 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 1655 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 1656 continue; 1657 } 1658 1659 String nodeName = parser.getName(); 1660 if (nodeName.equals("extra")) { 1661 parseBundleExtra("extra", parser, outBundle); 1662 XmlUtils.skipCurrentTag(parser); 1663 1664 } else { 1665 XmlUtils.skipCurrentTag(parser); 1666 } 1667 } 1668 } 1669 1670 /** 1671 * Parse a name/value pair out of an XML tag holding that data. The 1672 * AttributeSet must be holding the data defined by 1673 * {@link android.R.styleable#Extra}. The following value types are supported: 1674 * <ul> 1675 * <li> {@link TypedValue#TYPE_STRING}: 1676 * {@link Bundle#putCharSequence Bundle.putCharSequence()} 1677 * <li> {@link TypedValue#TYPE_INT_BOOLEAN}: 1678 * {@link Bundle#putCharSequence Bundle.putBoolean()} 1679 * <li> {@link TypedValue#TYPE_FIRST_INT}-{@link TypedValue#TYPE_LAST_INT}: 1680 * {@link Bundle#putCharSequence Bundle.putBoolean()} 1681 * <li> {@link TypedValue#TYPE_FLOAT}: 1682 * {@link Bundle#putCharSequence Bundle.putFloat()} 1683 * </ul> 1684 * 1685 * @param tagName The name of the tag these attributes come from; this is 1686 * only used for reporting error messages. 1687 * @param attrs The attributes from which to retrieve the name/value pair. 1688 * @param outBundle The Bundle in which to place the parsed value. 1689 * @throws XmlPullParserException If the attributes are not valid. 1690 */ 1691 public void parseBundleExtra(String tagName, AttributeSet attrs, 1692 Bundle outBundle) throws XmlPullParserException { 1693 TypedArray sa = obtainAttributes(attrs, 1694 com.android.internal.R.styleable.Extra); 1695 1696 String name = sa.getString( 1697 com.android.internal.R.styleable.Extra_name); 1698 if (name == null) { 1699 sa.recycle(); 1700 throw new XmlPullParserException("<" + tagName 1701 + "> requires an android:name attribute at " 1702 + attrs.getPositionDescription()); 1703 } 1704 1705 TypedValue v = sa.peekValue( 1706 com.android.internal.R.styleable.Extra_value); 1707 if (v != null) { 1708 if (v.type == TypedValue.TYPE_STRING) { 1709 CharSequence cs = v.coerceToString(); 1710 outBundle.putCharSequence(name, cs); 1711 } else if (v.type == TypedValue.TYPE_INT_BOOLEAN) { 1712 outBundle.putBoolean(name, v.data != 0); 1713 } else if (v.type >= TypedValue.TYPE_FIRST_INT 1714 && v.type <= TypedValue.TYPE_LAST_INT) { 1715 outBundle.putInt(name, v.data); 1716 } else if (v.type == TypedValue.TYPE_FLOAT) { 1717 outBundle.putFloat(name, v.getFloat()); 1718 } else { 1719 sa.recycle(); 1720 throw new XmlPullParserException("<" + tagName 1721 + "> only supports string, integer, float, color, and boolean at " 1722 + attrs.getPositionDescription()); 1723 } 1724 } else { 1725 sa.recycle(); 1726 throw new XmlPullParserException("<" + tagName 1727 + "> requires an android:value or android:resource attribute at " 1728 + attrs.getPositionDescription()); 1729 } 1730 1731 sa.recycle(); 1732 } 1733 1734 /** 1735 * Retrieve underlying AssetManager storage for these resources. 1736 */ 1737 public final AssetManager getAssets() { 1738 return mAssets; 1739 } 1740 1741 /** 1742 * Call this to remove all cached loaded layout resources from the 1743 * Resources object. Only intended for use with performance testing 1744 * tools. 1745 */ 1746 public final void flushLayoutCache() { 1747 synchronized (mCachedXmlBlockIds) { 1748 // First see if this block is in our cache. 1749 final int num = mCachedXmlBlockIds.length; 1750 for (int i=0; i<num; i++) { 1751 mCachedXmlBlockIds[i] = -0; 1752 XmlBlock oldBlock = mCachedXmlBlocks[i]; 1753 if (oldBlock != null) { 1754 oldBlock.close(); 1755 } 1756 mCachedXmlBlocks[i] = null; 1757 } 1758 } 1759 } 1760 1761 /** 1762 * Start preloading of resource data using this Resources object. Only 1763 * for use by the zygote process for loading common system resources. 1764 * {@hide} 1765 */ 1766 public final void startPreloading() { 1767 synchronized (mSync) { 1768 if (mPreloaded) { 1769 throw new IllegalStateException("Resources already preloaded"); 1770 } 1771 mPreloaded = true; 1772 mPreloading = true; 1773 } 1774 } 1775 1776 /** 1777 * Called by zygote when it is done preloading resources, to change back 1778 * to normal Resources operation. 1779 */ 1780 public final void finishPreloading() { 1781 if (mPreloading) { 1782 mPreloading = false; 1783 flushLayoutCache(); 1784 } 1785 } 1786 1787 /*package*/ Drawable loadDrawable(TypedValue value, int id) 1788 throws NotFoundException { 1789 1790 if (TRACE_FOR_PRELOAD) { 1791 // Log only framework resources 1792 if ((id >>> 24) == 0x1) { 1793 final String name = getResourceName(id); 1794 if (name != null) android.util.Log.d("PreloadDrawable", name); 1795 } 1796 } 1797 1798 final long key = (((long) value.assetCookie) << 32) | value.data; 1799 boolean isColorDrawable = false; 1800 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 1801 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 1802 isColorDrawable = true; 1803 } 1804 Drawable dr = getCachedDrawable(isColorDrawable ? mColorDrawableCache : mDrawableCache, key); 1805 1806 if (dr != null) { 1807 return dr; 1808 } 1809 1810 Drawable.ConstantState cs = isColorDrawable ? sPreloadedColorDrawables.get(key) : sPreloadedDrawables.get(key); 1811 if (cs != null) { 1812 dr = cs.newDrawable(this); 1813 } else { 1814 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 1815 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 1816 dr = new ColorDrawable(value.data); 1817 } 1818 1819 if (dr == null) { 1820 if (value.string == null) { 1821 throw new NotFoundException( 1822 "Resource is not a Drawable (color or path): " + value); 1823 } 1824 1825 String file = value.string.toString(); 1826 1827 if (DEBUG_LOAD) Log.v(TAG, "Loading drawable for cookie " 1828 + value.assetCookie + ": " + file); 1829 1830 if (file.endsWith(".xml")) { 1831 try { 1832 XmlResourceParser rp = loadXmlResourceParser( 1833 file, id, value.assetCookie, "drawable"); 1834 dr = Drawable.createFromXml(this, rp); 1835 rp.close(); 1836 } catch (Exception e) { 1837 NotFoundException rnf = new NotFoundException( 1838 "File " + file + " from drawable resource ID #0x" 1839 + Integer.toHexString(id)); 1840 rnf.initCause(e); 1841 throw rnf; 1842 } 1843 1844 } else { 1845 try { 1846 InputStream is = mAssets.openNonAsset( 1847 value.assetCookie, file, AssetManager.ACCESS_STREAMING); 1848 // System.out.println("Opened file " + file + ": " + is); 1849 dr = Drawable.createFromResourceStream(this, value, is, 1850 file, null); 1851 is.close(); 1852 // System.out.println("Created stream: " + dr); 1853 } catch (Exception e) { 1854 NotFoundException rnf = new NotFoundException( 1855 "File " + file + " from drawable resource ID #0x" 1856 + Integer.toHexString(id)); 1857 rnf.initCause(e); 1858 throw rnf; 1859 } 1860 } 1861 } 1862 } 1863 1864 if (dr != null) { 1865 dr.setChangingConfigurations(value.changingConfigurations); 1866 cs = dr.getConstantState(); 1867 if (cs != null) { 1868 if (mPreloading) { 1869 if (isColorDrawable) { 1870 sPreloadedColorDrawables.put(key, cs); 1871 } else { 1872 sPreloadedDrawables.put(key, cs); 1873 } 1874 } else { 1875 synchronized (mTmpValue) { 1876 //Log.i(TAG, "Saving cached drawable @ #" + 1877 // Integer.toHexString(key.intValue()) 1878 // + " in " + this + ": " + cs); 1879 if (isColorDrawable) { 1880 mColorDrawableCache.put(key, new WeakReference<Drawable.ConstantState>(cs)); 1881 } else { 1882 mDrawableCache.put(key, new WeakReference<Drawable.ConstantState>(cs)); 1883 } 1884 } 1885 } 1886 } 1887 } 1888 1889 return dr; 1890 } 1891 1892 private Drawable getCachedDrawable( 1893 LongSparseArray<WeakReference<ConstantState>> drawableCache, 1894 long key) { 1895 synchronized (mTmpValue) { 1896 WeakReference<Drawable.ConstantState> wr = drawableCache.get(key); 1897 if (wr != null) { // we have the key 1898 Drawable.ConstantState entry = wr.get(); 1899 if (entry != null) { 1900 //Log.i(TAG, "Returning cached drawable @ #" + 1901 // Integer.toHexString(((Integer)key).intValue()) 1902 // + " in " + this + ": " + entry); 1903 return entry.newDrawable(this); 1904 } 1905 else { // our entry has been purged 1906 drawableCache.delete(key); 1907 } 1908 } 1909 } 1910 return null; 1911 } 1912 1913 /*package*/ ColorStateList loadColorStateList(TypedValue value, int id) 1914 throws NotFoundException { 1915 if (TRACE_FOR_PRELOAD) { 1916 // Log only framework resources 1917 if ((id >>> 24) == 0x1) { 1918 final String name = getResourceName(id); 1919 if (name != null) android.util.Log.d("PreloadColorStateList", name); 1920 } 1921 } 1922 1923 final int key = (value.assetCookie << 24) | value.data; 1924 1925 ColorStateList csl; 1926 1927 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 1928 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 1929 1930 csl = mPreloadedColorStateLists.get(key); 1931 if (csl != null) { 1932 return csl; 1933 } 1934 1935 csl = ColorStateList.valueOf(value.data); 1936 if (mPreloading) { 1937 mPreloadedColorStateLists.put(key, csl); 1938 } 1939 1940 return csl; 1941 } 1942 1943 csl = getCachedColorStateList(key); 1944 if (csl != null) { 1945 return csl; 1946 } 1947 1948 csl = mPreloadedColorStateLists.get(key); 1949 if (csl != null) { 1950 return csl; 1951 } 1952 1953 if (value.string == null) { 1954 throw new NotFoundException( 1955 "Resource is not a ColorStateList (color or path): " + value); 1956 } 1957 1958 String file = value.string.toString(); 1959 1960 if (file.endsWith(".xml")) { 1961 try { 1962 XmlResourceParser rp = loadXmlResourceParser( 1963 file, id, value.assetCookie, "colorstatelist"); 1964 csl = ColorStateList.createFromXml(this, rp); 1965 rp.close(); 1966 } catch (Exception e) { 1967 NotFoundException rnf = new NotFoundException( 1968 "File " + file + " from color state list resource ID #0x" 1969 + Integer.toHexString(id)); 1970 rnf.initCause(e); 1971 throw rnf; 1972 } 1973 } else { 1974 throw new NotFoundException( 1975 "File " + file + " from drawable resource ID #0x" 1976 + Integer.toHexString(id) + ": .xml extension required"); 1977 } 1978 1979 if (csl != null) { 1980 if (mPreloading) { 1981 mPreloadedColorStateLists.put(key, csl); 1982 } else { 1983 synchronized (mTmpValue) { 1984 //Log.i(TAG, "Saving cached color state list @ #" + 1985 // Integer.toHexString(key.intValue()) 1986 // + " in " + this + ": " + csl); 1987 mColorStateListCache.put( 1988 key, new WeakReference<ColorStateList>(csl)); 1989 } 1990 } 1991 } 1992 1993 return csl; 1994 } 1995 1996 private ColorStateList getCachedColorStateList(int key) { 1997 synchronized (mTmpValue) { 1998 WeakReference<ColorStateList> wr = mColorStateListCache.get(key); 1999 if (wr != null) { // we have the key 2000 ColorStateList entry = wr.get(); 2001 if (entry != null) { 2002 //Log.i(TAG, "Returning cached color state list @ #" + 2003 // Integer.toHexString(((Integer)key).intValue()) 2004 // + " in " + this + ": " + entry); 2005 return entry; 2006 } 2007 else { // our entry has been purged 2008 mColorStateListCache.delete(key); 2009 } 2010 } 2011 } 2012 return null; 2013 } 2014 2015 /*package*/ XmlResourceParser loadXmlResourceParser(int id, String type) 2016 throws NotFoundException { 2017 synchronized (mTmpValue) { 2018 TypedValue value = mTmpValue; 2019 getValue(id, value, true); 2020 if (value.type == TypedValue.TYPE_STRING) { 2021 return loadXmlResourceParser(value.string.toString(), id, 2022 value.assetCookie, type); 2023 } 2024 throw new NotFoundException( 2025 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 2026 + Integer.toHexString(value.type) + " is not valid"); 2027 } 2028 } 2029 2030 /*package*/ XmlResourceParser loadXmlResourceParser(String file, int id, 2031 int assetCookie, String type) throws NotFoundException { 2032 if (id != 0) { 2033 try { 2034 // These may be compiled... 2035 synchronized (mCachedXmlBlockIds) { 2036 // First see if this block is in our cache. 2037 final int num = mCachedXmlBlockIds.length; 2038 for (int i=0; i<num; i++) { 2039 if (mCachedXmlBlockIds[i] == id) { 2040 //System.out.println("**** REUSING XML BLOCK! id=" 2041 // + id + ", index=" + i); 2042 return mCachedXmlBlocks[i].newParser(); 2043 } 2044 } 2045 2046 // Not in the cache, create a new block and put it at 2047 // the next slot in the cache. 2048 XmlBlock block = mAssets.openXmlBlockAsset( 2049 assetCookie, file); 2050 if (block != null) { 2051 int pos = mLastCachedXmlBlockIndex+1; 2052 if (pos >= num) pos = 0; 2053 mLastCachedXmlBlockIndex = pos; 2054 XmlBlock oldBlock = mCachedXmlBlocks[pos]; 2055 if (oldBlock != null) { 2056 oldBlock.close(); 2057 } 2058 mCachedXmlBlockIds[pos] = id; 2059 mCachedXmlBlocks[pos] = block; 2060 //System.out.println("**** CACHING NEW XML BLOCK! id=" 2061 // + id + ", index=" + pos); 2062 return block.newParser(); 2063 } 2064 } 2065 } catch (Exception e) { 2066 NotFoundException rnf = new NotFoundException( 2067 "File " + file + " from xml type " + type + " resource ID #0x" 2068 + Integer.toHexString(id)); 2069 rnf.initCause(e); 2070 throw rnf; 2071 } 2072 } 2073 2074 throw new NotFoundException( 2075 "File " + file + " from xml type " + type + " resource ID #0x" 2076 + Integer.toHexString(id)); 2077 } 2078 2079 /** 2080 * Returns the display adjusted for the Resources' metrics. 2081 * @hide 2082 */ 2083 public Display getDefaultDisplay(Display defaultDisplay) { 2084 if (mDefaultDisplay == null) { 2085 if (!mCompatibilityInfo.isScalingRequired() && mCompatibilityInfo.supportsScreen()) { 2086 // the app supports the display. just use the default one. 2087 mDefaultDisplay = defaultDisplay; 2088 } else { 2089 // display needs adjustment. 2090 mDefaultDisplay = Display.createMetricsBasedDisplay( 2091 defaultDisplay.getDisplayId(), mMetrics); 2092 } 2093 } 2094 return mDefaultDisplay; 2095 } 2096 2097 private TypedArray getCachedStyledAttributes(int len) { 2098 synchronized (mTmpValue) { 2099 TypedArray attrs = mCachedStyledAttributes; 2100 if (attrs != null) { 2101 mCachedStyledAttributes = null; 2102 2103 attrs.mLength = len; 2104 int fullLen = len * AssetManager.STYLE_NUM_ENTRIES; 2105 if (attrs.mData.length >= fullLen) { 2106 return attrs; 2107 } 2108 attrs.mData = new int[fullLen]; 2109 attrs.mIndices = new int[1+len]; 2110 return attrs; 2111 } 2112 return new TypedArray(this, 2113 new int[len*AssetManager.STYLE_NUM_ENTRIES], 2114 new int[1+len], len); 2115 } 2116 } 2117 2118 private Resources() { 2119 mAssets = AssetManager.getSystem(); 2120 // NOTE: Intentionally leaving this uninitialized (all values set 2121 // to zero), so that anyone who tries to do something that requires 2122 // metrics will get a very wrong value. 2123 mConfiguration.setToDefaults(); 2124 mMetrics.setToDefaults(); 2125 updateConfiguration(null, null); 2126 mAssets.ensureStringBlocks(); 2127 mCompatibilityInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 2128 } 2129} 2130