Resources.java revision 5d911c3a95cf4db4cf1cc0c8d4d253553d50c550
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.content.res; 18 19import com.android.internal.util.XmlUtils; 20 21import org.xmlpull.v1.XmlPullParser; 22import org.xmlpull.v1.XmlPullParserException; 23 24import android.content.pm.ActivityInfo; 25import android.graphics.Movie; 26import android.graphics.drawable.Drawable; 27import android.graphics.drawable.ColorDrawable; 28import android.graphics.drawable.Drawable.ConstantState; 29import android.os.Build; 30import android.os.Bundle; 31import android.util.AttributeSet; 32import android.util.DisplayMetrics; 33import android.util.Log; 34import android.util.Slog; 35import android.util.TypedValue; 36import android.util.LongSparseArray; 37 38import java.io.IOException; 39import java.io.InputStream; 40import java.lang.ref.WeakReference; 41import java.util.Locale; 42 43import libcore.icu.NativePluralRules; 44 45/** 46 * Class for accessing an application's resources. This sits on top of the 47 * asset manager of the application (accessible through {@link #getAssets}) and 48 * provides a high-level API for getting typed data from the assets. 49 * 50 * <p>The Android resource system keeps track of all non-code assets associated with an 51 * application. You can use this class to access your application's resources. You can generally 52 * acquire the {@link android.content.res.Resources} instance associated with your application 53 * with {@link android.content.Context#getResources getResources()}.</p> 54 * 55 * <p>The Android SDK tools compile your application's resources into the application binary 56 * at build time. To use a resource, you must install it correctly in the source tree (inside 57 * your project's {@code res/} directory) and build your application. As part of the build 58 * process, the SDK tools generate symbols for each resource, which you can use in your application 59 * code to access the resources.</p> 60 * 61 * <p>Using application resources makes it easy to update various characteristics of your 62 * application without modifying code, and—by providing sets of alternative 63 * resources—enables you to optimize your application for a variety of device configurations 64 * (such as for different languages and screen sizes). This is an important aspect of developing 65 * Android applications that are compatible on different types of devices.</p> 66 * 67 * <p>For more information about using resources, see the documentation about <a 68 * href="{@docRoot}guide/topics/resources/index.html">Application Resources</a>.</p> 69 */ 70public class Resources { 71 static final String TAG = "Resources"; 72 private static final boolean DEBUG_LOAD = false; 73 private static final boolean DEBUG_CONFIG = false; 74 private static final boolean DEBUG_ATTRIBUTES_CACHE = false; 75 private static final boolean TRACE_FOR_PRELOAD = false; 76 private static final boolean TRACE_FOR_MISS_PRELOAD = false; 77 78 private static final int ID_OTHER = 0x01000004; 79 80 private static final Object mSync = new Object(); 81 /*package*/ 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 LongSparseArray<ColorStateList> sPreloadedColorStateLists 89 = new LongSparseArray<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 LongSparseArray<WeakReference<ColorStateList> > mColorStateListCache 101 = new LongSparseArray<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 RuntimeException mLastRetrievedAttrs = null; 108 109 private int mLastCachedXmlBlockIndex = -1; 110 private final int[] mCachedXmlBlockIds = { 0, 0, 0, 0 }; 111 private final XmlBlock[] mCachedXmlBlocks = new XmlBlock[4]; 112 113 /*package*/ final AssetManager mAssets; 114 private final Configuration mConfiguration = new Configuration(); 115 /*package*/ final DisplayMetrics mMetrics = new DisplayMetrics(); 116 private NativePluralRules mPluralRule; 117 118 private CompatibilityInfo mCompatibilityInfo; 119 120 /** @hide */ 121 public static int selectDefaultTheme(int curTheme, int targetSdkVersion) { 122 return selectSystemTheme(curTheme, targetSdkVersion, 123 com.android.internal.R.style.Theme, 124 com.android.internal.R.style.Theme_Holo, 125 com.android.internal.R.style.Theme_DeviceDefault); 126 } 127 128 /** @hide */ 129 public static int selectSystemTheme(int curTheme, int targetSdkVersion, 130 int orig, int holo, int deviceDefault) { 131 if (curTheme != 0) { 132 return curTheme; 133 } 134 if (targetSdkVersion < Build.VERSION_CODES.HONEYCOMB) { 135 return orig; 136 } 137 if (targetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 138 return holo; 139 } 140 return deviceDefault; 141 } 142 143 /** 144 * This exception is thrown by the resource APIs when a requested resource 145 * can not be found. 146 */ 147 public static class NotFoundException extends RuntimeException { 148 public NotFoundException() { 149 } 150 151 public NotFoundException(String name) { 152 super(name); 153 } 154 } 155 156 /** 157 * Create a new Resources object on top of an existing set of assets in an 158 * AssetManager. 159 * 160 * @param assets Previously created AssetManager. 161 * @param metrics Current display metrics to consider when 162 * selecting/computing resource values. 163 * @param config Desired device configuration to consider when 164 * selecting/computing resource values (optional). 165 */ 166 public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config) { 167 this(assets, metrics, config, null); 168 } 169 170 /** 171 * Creates a new Resources object with CompatibilityInfo. 172 * 173 * @param assets Previously created AssetManager. 174 * @param metrics Current display metrics to consider when 175 * selecting/computing resource values. 176 * @param config Desired device configuration to consider when 177 * selecting/computing resource values (optional). 178 * @param compInfo this resource's compatibility info. It will use the default compatibility 179 * info when it's null. 180 * @hide 181 */ 182 public Resources(AssetManager assets, DisplayMetrics metrics, 183 Configuration config, CompatibilityInfo compInfo) { 184 mAssets = assets; 185 mMetrics.setToDefaults(); 186 mCompatibilityInfo = compInfo; 187 updateConfiguration(config, metrics); 188 assets.ensureStringBlocks(); 189 } 190 191 /** 192 * Return a global shared Resources object that provides access to only 193 * system resources (no application resources), and is not configured for 194 * the current screen (can not use dimension units, does not change based 195 * on orientation, etc). 196 */ 197 public static Resources getSystem() { 198 synchronized (mSync) { 199 Resources ret = mSystem; 200 if (ret == null) { 201 ret = new Resources(); 202 mSystem = ret; 203 } 204 205 return ret; 206 } 207 } 208 209 /** 210 * Return the string value associated with a particular resource ID. The 211 * returned object will be a String if this is a plain string; it will be 212 * some other type of CharSequence if it is styled. 213 * {@more} 214 * 215 * @param id The desired resource identifier, as generated by the aapt 216 * tool. This integer encodes the package, type, and resource 217 * entry. The value 0 is an invalid identifier. 218 * 219 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 220 * 221 * @return CharSequence The string data associated with the resource, plus 222 * possibly styled text information. 223 */ 224 public CharSequence getText(int id) throws NotFoundException { 225 CharSequence res = mAssets.getResourceText(id); 226 if (res != null) { 227 return res; 228 } 229 throw new NotFoundException("String resource ID #0x" 230 + Integer.toHexString(id)); 231 } 232 233 /** 234 * Return the character sequence associated with a particular resource ID for a particular 235 * numerical quantity. 236 * 237 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 238 * Resources</a> for more on quantity strings. 239 * 240 * @param id The desired resource identifier, as generated by the aapt 241 * tool. This integer encodes the package, type, and resource 242 * entry. The value 0 is an invalid identifier. 243 * @param quantity The number used to get the correct string for the current language's 244 * plural rules. 245 * 246 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 247 * 248 * @return CharSequence The string data associated with the resource, plus 249 * possibly styled text information. 250 */ 251 public CharSequence getQuantityText(int id, int quantity) throws NotFoundException { 252 NativePluralRules rule = getPluralRule(); 253 CharSequence res = mAssets.getResourceBagText(id, 254 attrForQuantityCode(rule.quantityForInt(quantity))); 255 if (res != null) { 256 return res; 257 } 258 res = mAssets.getResourceBagText(id, ID_OTHER); 259 if (res != null) { 260 return res; 261 } 262 throw new NotFoundException("Plural resource ID #0x" + Integer.toHexString(id) 263 + " quantity=" + quantity 264 + " item=" + stringForQuantityCode(rule.quantityForInt(quantity))); 265 } 266 267 private NativePluralRules getPluralRule() { 268 synchronized (mSync) { 269 if (mPluralRule == null) { 270 mPluralRule = NativePluralRules.forLocale(mConfiguration.locale); 271 } 272 return mPluralRule; 273 } 274 } 275 276 private static int attrForQuantityCode(int quantityCode) { 277 switch (quantityCode) { 278 case NativePluralRules.ZERO: return 0x01000005; 279 case NativePluralRules.ONE: return 0x01000006; 280 case NativePluralRules.TWO: return 0x01000007; 281 case NativePluralRules.FEW: return 0x01000008; 282 case NativePluralRules.MANY: return 0x01000009; 283 default: return ID_OTHER; 284 } 285 } 286 287 private static String stringForQuantityCode(int quantityCode) { 288 switch (quantityCode) { 289 case NativePluralRules.ZERO: return "zero"; 290 case NativePluralRules.ONE: return "one"; 291 case NativePluralRules.TWO: return "two"; 292 case NativePluralRules.FEW: return "few"; 293 case NativePluralRules.MANY: return "many"; 294 default: return "other"; 295 } 296 } 297 298 /** 299 * Return the string value associated with a particular resource ID. It 300 * will be stripped of any styled text information. 301 * {@more} 302 * 303 * @param id The desired resource identifier, as generated by the aapt 304 * tool. This integer encodes the package, type, and resource 305 * entry. The value 0 is an invalid identifier. 306 * 307 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 308 * 309 * @return String The string data associated with the resource, 310 * stripped of styled text information. 311 */ 312 public String getString(int id) throws NotFoundException { 313 CharSequence res = getText(id); 314 if (res != null) { 315 return res.toString(); 316 } 317 throw new NotFoundException("String resource ID #0x" 318 + Integer.toHexString(id)); 319 } 320 321 322 /** 323 * Return the string value associated with a particular resource ID, 324 * substituting the format arguments as defined in {@link java.util.Formatter} 325 * and {@link java.lang.String#format}. It will be stripped of any styled text 326 * information. 327 * {@more} 328 * 329 * @param id The desired resource identifier, as generated by the aapt 330 * tool. This integer encodes the package, type, and resource 331 * entry. The value 0 is an invalid identifier. 332 * 333 * @param formatArgs The format arguments that will be used for substitution. 334 * 335 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 336 * 337 * @return String The string data associated with the resource, 338 * stripped of styled text information. 339 */ 340 public String getString(int id, Object... formatArgs) throws NotFoundException { 341 String raw = getString(id); 342 return String.format(mConfiguration.locale, raw, formatArgs); 343 } 344 345 /** 346 * Return the string value associated with a particular resource ID for a particular 347 * numerical quantity, substituting the format arguments as defined in 348 * {@link java.util.Formatter} and {@link java.lang.String#format}. It will be 349 * stripped of any styled text information. 350 * {@more} 351 * 352 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 353 * Resources</a> for more on quantity strings. 354 * 355 * @param id The desired resource identifier, as generated by the aapt 356 * tool. This integer encodes the package, type, and resource 357 * entry. The value 0 is an invalid identifier. 358 * @param quantity The number used to get the correct string for the current language's 359 * plural rules. 360 * @param formatArgs The format arguments that will be used for substitution. 361 * 362 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 363 * 364 * @return String The string data associated with the resource, 365 * stripped of styled text information. 366 */ 367 public String getQuantityString(int id, int quantity, Object... formatArgs) 368 throws NotFoundException { 369 String raw = getQuantityText(id, quantity).toString(); 370 return String.format(mConfiguration.locale, raw, formatArgs); 371 } 372 373 /** 374 * Return the string value associated with a particular resource ID for a particular 375 * numerical quantity. 376 * 377 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 378 * Resources</a> for more on quantity strings. 379 * 380 * @param id The desired resource identifier, as generated by the aapt 381 * tool. This integer encodes the package, type, and resource 382 * entry. The value 0 is an invalid identifier. 383 * @param quantity The number used to get the correct string for the current language's 384 * plural rules. 385 * 386 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 387 * 388 * @return String The string data associated with the resource, 389 * stripped of styled text information. 390 */ 391 public String getQuantityString(int id, int quantity) throws NotFoundException { 392 return getQuantityText(id, quantity).toString(); 393 } 394 395 /** 396 * Return the string value associated with a particular resource ID. The 397 * returned object will be a String if this is a plain string; it will be 398 * some other type of CharSequence if it is styled. 399 * 400 * @param id The desired resource identifier, as generated by the aapt 401 * tool. This integer encodes the package, type, and resource 402 * entry. The value 0 is an invalid identifier. 403 * 404 * @param def The default CharSequence to return. 405 * 406 * @return CharSequence The string data associated with the resource, plus 407 * possibly styled text information, or def if id is 0 or not found. 408 */ 409 public CharSequence getText(int id, CharSequence def) { 410 CharSequence res = id != 0 ? mAssets.getResourceText(id) : null; 411 return res != null ? res : def; 412 } 413 414 /** 415 * Return the styled text array associated with a particular resource ID. 416 * 417 * @param id The desired resource identifier, as generated by the aapt 418 * tool. This integer encodes the package, type, and resource 419 * entry. The value 0 is an invalid identifier. 420 * 421 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 422 * 423 * @return The styled text array associated with the resource. 424 */ 425 public CharSequence[] getTextArray(int id) throws NotFoundException { 426 CharSequence[] res = mAssets.getResourceTextArray(id); 427 if (res != null) { 428 return res; 429 } 430 throw new NotFoundException("Text array resource ID #0x" 431 + Integer.toHexString(id)); 432 } 433 434 /** 435 * Return the string array associated with a particular resource ID. 436 * 437 * @param id The desired resource identifier, as generated by the aapt 438 * tool. This integer encodes the package, type, and resource 439 * entry. The value 0 is an invalid identifier. 440 * 441 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 442 * 443 * @return The string array associated with the resource. 444 */ 445 public String[] getStringArray(int id) throws NotFoundException { 446 String[] res = mAssets.getResourceStringArray(id); 447 if (res != null) { 448 return res; 449 } 450 throw new NotFoundException("String array resource ID #0x" 451 + Integer.toHexString(id)); 452 } 453 454 /** 455 * Return the int array associated with a particular resource ID. 456 * 457 * @param id The desired resource identifier, as generated by the aapt 458 * tool. This integer encodes the package, type, and resource 459 * entry. The value 0 is an invalid identifier. 460 * 461 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 462 * 463 * @return The int array associated with the resource. 464 */ 465 public int[] getIntArray(int id) throws NotFoundException { 466 int[] res = mAssets.getArrayIntResource(id); 467 if (res != null) { 468 return res; 469 } 470 throw new NotFoundException("Int array resource ID #0x" 471 + Integer.toHexString(id)); 472 } 473 474 /** 475 * Return an array of heterogeneous values. 476 * 477 * @param id The desired resource identifier, as generated by the aapt 478 * tool. This integer encodes the package, type, and resource 479 * entry. The value 0 is an invalid identifier. 480 * 481 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 482 * 483 * @return Returns a TypedArray holding an array of the array values. 484 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 485 * when done with it. 486 */ 487 public TypedArray obtainTypedArray(int id) throws NotFoundException { 488 int len = mAssets.getArraySize(id); 489 if (len < 0) { 490 throw new NotFoundException("Array resource ID #0x" 491 + Integer.toHexString(id)); 492 } 493 494 TypedArray array = getCachedStyledAttributes(len); 495 array.mLength = mAssets.retrieveArray(id, array.mData); 496 array.mIndices[0] = 0; 497 498 return array; 499 } 500 501 /** 502 * Retrieve a dimensional for a particular resource ID. Unit 503 * conversions are based on the current {@link DisplayMetrics} associated 504 * with the resources. 505 * 506 * @param id The desired resource identifier, as generated by the aapt 507 * tool. This integer encodes the package, type, and resource 508 * entry. The value 0 is an invalid identifier. 509 * 510 * @return Resource dimension value multiplied by the appropriate 511 * metric. 512 * 513 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 514 * 515 * @see #getDimensionPixelOffset 516 * @see #getDimensionPixelSize 517 */ 518 public float getDimension(int id) throws NotFoundException { 519 synchronized (mTmpValue) { 520 TypedValue value = mTmpValue; 521 getValue(id, value, true); 522 if (value.type == TypedValue.TYPE_DIMENSION) { 523 return TypedValue.complexToDimension(value.data, mMetrics); 524 } 525 throw new NotFoundException( 526 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 527 + Integer.toHexString(value.type) + " is not valid"); 528 } 529 } 530 531 /** 532 * Retrieve a dimensional for a particular resource ID for use 533 * as an offset in raw pixels. This is the same as 534 * {@link #getDimension}, except the returned value is converted to 535 * integer pixels for you. An offset conversion involves simply 536 * truncating the base value to an integer. 537 * 538 * @param id The desired resource identifier, as generated by the aapt 539 * tool. This integer encodes the package, type, and resource 540 * entry. The value 0 is an invalid identifier. 541 * 542 * @return Resource dimension value multiplied by the appropriate 543 * metric and truncated to integer pixels. 544 * 545 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 546 * 547 * @see #getDimension 548 * @see #getDimensionPixelSize 549 */ 550 public int getDimensionPixelOffset(int id) throws NotFoundException { 551 synchronized (mTmpValue) { 552 TypedValue value = mTmpValue; 553 getValue(id, value, true); 554 if (value.type == TypedValue.TYPE_DIMENSION) { 555 return TypedValue.complexToDimensionPixelOffset( 556 value.data, mMetrics); 557 } 558 throw new NotFoundException( 559 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 560 + Integer.toHexString(value.type) + " is not valid"); 561 } 562 } 563 564 /** 565 * Retrieve a dimensional for a particular resource ID for use 566 * as a size in raw pixels. This is the same as 567 * {@link #getDimension}, except the returned value is converted to 568 * integer pixels for use as a size. A size conversion involves 569 * rounding the base value, and ensuring that a non-zero base value 570 * is at least one pixel in size. 571 * 572 * @param id The desired resource identifier, as generated by the aapt 573 * tool. This integer encodes the package, type, and resource 574 * entry. The value 0 is an invalid identifier. 575 * 576 * @return Resource dimension value multiplied by the appropriate 577 * metric and truncated to integer pixels. 578 * 579 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 580 * 581 * @see #getDimension 582 * @see #getDimensionPixelOffset 583 */ 584 public int getDimensionPixelSize(int id) throws NotFoundException { 585 synchronized (mTmpValue) { 586 TypedValue value = mTmpValue; 587 getValue(id, value, true); 588 if (value.type == TypedValue.TYPE_DIMENSION) { 589 return TypedValue.complexToDimensionPixelSize( 590 value.data, mMetrics); 591 } 592 throw new NotFoundException( 593 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 594 + Integer.toHexString(value.type) + " is not valid"); 595 } 596 } 597 598 /** 599 * Retrieve a fractional unit for a particular resource ID. 600 * 601 * @param id The desired resource identifier, as generated by the aapt 602 * tool. This integer encodes the package, type, and resource 603 * entry. The value 0 is an invalid identifier. 604 * @param base The base value of this fraction. In other words, a 605 * standard fraction is multiplied by this value. 606 * @param pbase The parent base value of this fraction. In other 607 * words, a parent fraction (nn%p) is multiplied by this 608 * value. 609 * 610 * @return Attribute fractional value multiplied by the appropriate 611 * base value. 612 * 613 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 614 */ 615 public float getFraction(int id, int base, int pbase) { 616 synchronized (mTmpValue) { 617 TypedValue value = mTmpValue; 618 getValue(id, value, true); 619 if (value.type == TypedValue.TYPE_FRACTION) { 620 return TypedValue.complexToFraction(value.data, base, pbase); 621 } 622 throw new NotFoundException( 623 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 624 + Integer.toHexString(value.type) + " is not valid"); 625 } 626 } 627 628 /** 629 * Return a drawable object associated with a particular resource ID. 630 * Various types of objects will be returned depending on the underlying 631 * resource -- for example, a solid color, PNG image, scalable image, etc. 632 * The Drawable API hides these implementation details. 633 * 634 * @param id The desired resource identifier, as generated by the aapt 635 * tool. This integer encodes the package, type, and resource 636 * entry. The value 0 is an invalid identifier. 637 * 638 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 639 * 640 * @return Drawable An object that can be used to draw this resource. 641 */ 642 public Drawable getDrawable(int id) throws NotFoundException { 643 synchronized (mTmpValue) { 644 TypedValue value = mTmpValue; 645 getValue(id, value, true); 646 return loadDrawable(value, id); 647 } 648 } 649 650 /** 651 * Return a drawable object associated with a particular resource ID for the 652 * given screen density in DPI. This will set the drawable's density to be 653 * the device's density multiplied by the ratio of actual drawable density 654 * to requested density. This allows the drawable to be scaled up to the 655 * correct size if needed. Various types of objects will be returned 656 * depending on the underlying resource -- for example, a solid color, PNG 657 * image, scalable image, etc. The Drawable API hides these implementation 658 * details. 659 * 660 * @param id The desired resource identifier, as generated by the aapt tool. 661 * This integer encodes the package, type, and resource entry. 662 * The value 0 is an invalid identifier. 663 * @param density the desired screen density indicated by the resource as 664 * found in {@link DisplayMetrics}. 665 * @throws NotFoundException Throws NotFoundException if the given ID does 666 * not exist. 667 * @return Drawable An object that can be used to draw this resource. 668 */ 669 public Drawable getDrawableForDensity(int id, int density) throws NotFoundException { 670 synchronized (mTmpValue) { 671 TypedValue value = mTmpValue; 672 getValueForDensity(id, density, value, true); 673 674 /* 675 * Pretend the requested density is actually the display density. If 676 * the drawable returned is not the requested density, then force it 677 * to be scaled later by dividing its density by the ratio of 678 * requested density to actual device density. Drawables that have 679 * undefined density or no density don't need to be handled here. 680 */ 681 if (value.density > 0 && value.density != TypedValue.DENSITY_NONE) { 682 if (value.density == density) { 683 value.density = DisplayMetrics.DENSITY_DEVICE; 684 } else { 685 value.density = (value.density * DisplayMetrics.DENSITY_DEVICE) / density; 686 } 687 } 688 689 return loadDrawable(value, id); 690 } 691 } 692 693 /** 694 * Return a movie object associated with the particular resource ID. 695 * @param id The desired resource identifier, as generated by the aapt 696 * tool. This integer encodes the package, type, and resource 697 * entry. The value 0 is an invalid identifier. 698 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 699 * 700 */ 701 public Movie getMovie(int id) throws NotFoundException { 702 InputStream is = openRawResource(id); 703 Movie movie = Movie.decodeStream(is); 704 try { 705 is.close(); 706 } 707 catch (java.io.IOException e) { 708 // don't care, since the return value is valid 709 } 710 return movie; 711 } 712 713 /** 714 * Return a color integer associated with a particular resource ID. 715 * If the resource holds a complex 716 * {@link android.content.res.ColorStateList}, then the default color from 717 * the set is returned. 718 * 719 * @param id The desired resource identifier, as generated by the aapt 720 * tool. This integer encodes the package, type, and resource 721 * entry. The value 0 is an invalid identifier. 722 * 723 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 724 * 725 * @return Returns a single color value in the form 0xAARRGGBB. 726 */ 727 public int getColor(int id) throws NotFoundException { 728 synchronized (mTmpValue) { 729 TypedValue value = mTmpValue; 730 getValue(id, value, true); 731 if (value.type >= TypedValue.TYPE_FIRST_INT 732 && value.type <= TypedValue.TYPE_LAST_INT) { 733 return value.data; 734 } else if (value.type == TypedValue.TYPE_STRING) { 735 ColorStateList csl = loadColorStateList(mTmpValue, id); 736 return csl.getDefaultColor(); 737 } 738 throw new NotFoundException( 739 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 740 + Integer.toHexString(value.type) + " is not valid"); 741 } 742 } 743 744 /** 745 * Return a color state list associated with a particular resource ID. The 746 * resource may contain either a single raw color value, or a complex 747 * {@link android.content.res.ColorStateList} holding multiple possible colors. 748 * 749 * @param id The desired resource identifier of a {@link ColorStateList}, 750 * as generated by the aapt tool. This integer encodes the package, type, and resource 751 * entry. The value 0 is an invalid identifier. 752 * 753 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 754 * 755 * @return Returns a ColorStateList object containing either a single 756 * solid color or multiple colors that can be selected based on a state. 757 */ 758 public ColorStateList getColorStateList(int id) throws NotFoundException { 759 synchronized (mTmpValue) { 760 TypedValue value = mTmpValue; 761 getValue(id, value, true); 762 return loadColorStateList(value, id); 763 } 764 } 765 766 /** 767 * Return a boolean associated with a particular resource ID. This can be 768 * used with any integral resource value, and will return true if it is 769 * non-zero. 770 * 771 * @param id The desired resource identifier, as generated by the aapt 772 * tool. This integer encodes the package, type, and resource 773 * entry. The value 0 is an invalid identifier. 774 * 775 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 776 * 777 * @return Returns the boolean value contained in the resource. 778 */ 779 public boolean getBoolean(int id) throws NotFoundException { 780 synchronized (mTmpValue) { 781 TypedValue value = mTmpValue; 782 getValue(id, value, true); 783 if (value.type >= TypedValue.TYPE_FIRST_INT 784 && value.type <= TypedValue.TYPE_LAST_INT) { 785 return value.data != 0; 786 } 787 throw new NotFoundException( 788 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 789 + Integer.toHexString(value.type) + " is not valid"); 790 } 791 } 792 793 /** 794 * Return an integer associated with a particular resource ID. 795 * 796 * @param id The desired resource identifier, as generated by the aapt 797 * tool. This integer encodes the package, type, and resource 798 * entry. The value 0 is an invalid identifier. 799 * 800 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 801 * 802 * @return Returns the integer value contained in the resource. 803 */ 804 public int getInteger(int id) throws NotFoundException { 805 synchronized (mTmpValue) { 806 TypedValue value = mTmpValue; 807 getValue(id, value, true); 808 if (value.type >= TypedValue.TYPE_FIRST_INT 809 && value.type <= TypedValue.TYPE_LAST_INT) { 810 return value.data; 811 } 812 throw new NotFoundException( 813 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 814 + Integer.toHexString(value.type) + " is not valid"); 815 } 816 } 817 818 /** 819 * Return an XmlResourceParser through which you can read a view layout 820 * description for the given resource ID. This parser has limited 821 * functionality -- in particular, you can't change its input, and only 822 * the high-level events are available. 823 * 824 * <p>This function is really a simple wrapper for calling 825 * {@link #getXml} with a layout resource. 826 * 827 * @param id The desired resource identifier, as generated by the aapt 828 * tool. This integer encodes the package, type, and resource 829 * entry. The value 0 is an invalid identifier. 830 * 831 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 832 * 833 * @return A new parser object through which you can read 834 * the XML data. 835 * 836 * @see #getXml 837 */ 838 public XmlResourceParser getLayout(int id) throws NotFoundException { 839 return loadXmlResourceParser(id, "layout"); 840 } 841 842 /** 843 * Return an XmlResourceParser through which you can read an animation 844 * description for the given resource ID. This parser has limited 845 * functionality -- in particular, you can't change its input, and only 846 * the high-level events are available. 847 * 848 * <p>This function is really a simple wrapper for calling 849 * {@link #getXml} with an animation resource. 850 * 851 * @param id The desired resource identifier, as generated by the aapt 852 * tool. This integer encodes the package, type, and resource 853 * entry. The value 0 is an invalid identifier. 854 * 855 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 856 * 857 * @return A new parser object through which you can read 858 * the XML data. 859 * 860 * @see #getXml 861 */ 862 public XmlResourceParser getAnimation(int id) throws NotFoundException { 863 return loadXmlResourceParser(id, "anim"); 864 } 865 866 /** 867 * Return an XmlResourceParser through which you can read a generic XML 868 * resource for the given resource ID. 869 * 870 * <p>The XmlPullParser implementation returned here has some limited 871 * functionality. In particular, you can't change its input, and only 872 * high-level parsing events are available (since the document was 873 * pre-parsed for you at build time, which involved merging text and 874 * stripping comments). 875 * 876 * @param id The desired resource identifier, as generated by the aapt 877 * tool. This integer encodes the package, type, and resource 878 * entry. The value 0 is an invalid identifier. 879 * 880 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 881 * 882 * @return A new parser object through which you can read 883 * the XML data. 884 * 885 * @see android.util.AttributeSet 886 */ 887 public XmlResourceParser getXml(int id) throws NotFoundException { 888 return loadXmlResourceParser(id, "xml"); 889 } 890 891 /** 892 * Open a data stream for reading a raw resource. This can only be used 893 * with resources whose value is the name of an asset files -- that is, it can be 894 * used to open drawable, sound, and raw resources; it will fail on string 895 * and color resources. 896 * 897 * @param id The resource identifier to open, as generated by the appt 898 * tool. 899 * 900 * @return InputStream Access to the resource data. 901 * 902 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 903 * 904 */ 905 public InputStream openRawResource(int id) throws NotFoundException { 906 synchronized (mTmpValue) { 907 return openRawResource(id, mTmpValue); 908 } 909 } 910 911 /** 912 * Open a data stream for reading a raw resource. This can only be used 913 * with resources whose value is the name of an asset file -- that is, it can be 914 * used to open drawable, sound, and raw resources; it will fail on string 915 * and color resources. 916 * 917 * @param id The resource identifier to open, as generated by the appt tool. 918 * @param value The TypedValue object to hold the resource information. 919 * 920 * @return InputStream Access to the resource data. 921 * 922 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 923 */ 924 public InputStream openRawResource(int id, TypedValue value) throws NotFoundException { 925 getValue(id, value, true); 926 927 try { 928 return mAssets.openNonAsset(value.assetCookie, value.string.toString(), 929 AssetManager.ACCESS_STREAMING); 930 } catch (Exception e) { 931 NotFoundException rnf = new NotFoundException("File " + value.string.toString() + 932 " from drawable resource ID #0x" + Integer.toHexString(id)); 933 rnf.initCause(e); 934 throw rnf; 935 } 936 } 937 938 /** 939 * Open a file descriptor for reading a raw resource. This can only be used 940 * with resources whose value is the name of an asset files -- that is, it can be 941 * used to open drawable, sound, and raw resources; it will fail on string 942 * and color resources. 943 * 944 * <p>This function only works for resources that are stored in the package 945 * as uncompressed data, which typically includes things like mp3 files 946 * and png images. 947 * 948 * @param id The resource identifier to open, as generated by the appt 949 * tool. 950 * 951 * @return AssetFileDescriptor A new file descriptor you can use to read 952 * the resource. This includes the file descriptor itself, as well as the 953 * offset and length of data where the resource appears in the file. A 954 * null is returned if the file exists but is compressed. 955 * 956 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 957 * 958 */ 959 public AssetFileDescriptor openRawResourceFd(int id) throws NotFoundException { 960 synchronized (mTmpValue) { 961 TypedValue value = mTmpValue; 962 getValue(id, value, true); 963 964 try { 965 return mAssets.openNonAssetFd( 966 value.assetCookie, value.string.toString()); 967 } catch (Exception e) { 968 NotFoundException rnf = new NotFoundException( 969 "File " + value.string.toString() 970 + " from drawable resource ID #0x" 971 + Integer.toHexString(id)); 972 rnf.initCause(e); 973 throw rnf; 974 } 975 976 } 977 } 978 979 /** 980 * Return the raw data associated with a particular resource ID. 981 * 982 * @param id The desired resource identifier, as generated by the aapt 983 * tool. This integer encodes the package, type, and resource 984 * entry. The value 0 is an invalid identifier. 985 * @param outValue Object in which to place the resource data. 986 * @param resolveRefs If true, a resource that is a reference to another 987 * resource will be followed so that you receive the 988 * actual final resource data. If false, the TypedValue 989 * will be filled in with the reference itself. 990 * 991 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 992 * 993 */ 994 public void getValue(int id, TypedValue outValue, boolean resolveRefs) 995 throws NotFoundException { 996 boolean found = mAssets.getResourceValue(id, 0, outValue, resolveRefs); 997 if (found) { 998 return; 999 } 1000 throw new NotFoundException("Resource ID #0x" 1001 + Integer.toHexString(id)); 1002 } 1003 1004 /** 1005 * Get the raw value associated with a resource with associated density. 1006 * 1007 * @param id resource identifier 1008 * @param density density in DPI 1009 * @param resolveRefs If true, a resource that is a reference to another 1010 * resource will be followed so that you receive the actual final 1011 * resource data. If false, the TypedValue will be filled in with 1012 * the reference itself. 1013 * @throws NotFoundException Throws NotFoundException if the given ID does 1014 * not exist. 1015 * @see #getValue(String, TypedValue, boolean) 1016 */ 1017 public void getValueForDensity(int id, int density, TypedValue outValue, boolean resolveRefs) 1018 throws NotFoundException { 1019 boolean found = mAssets.getResourceValue(id, density, outValue, resolveRefs); 1020 if (found) { 1021 return; 1022 } 1023 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id)); 1024 } 1025 1026 /** 1027 * Return the raw data associated with a particular resource ID. 1028 * See getIdentifier() for information on how names are mapped to resource 1029 * IDs, and getString(int) for information on how string resources are 1030 * retrieved. 1031 * 1032 * <p>Note: use of this function is discouraged. It is much more 1033 * efficient to retrieve resources by identifier than by name. 1034 * 1035 * @param name The name of the desired resource. This is passed to 1036 * getIdentifier() with a default type of "string". 1037 * @param outValue Object in which to place the resource data. 1038 * @param resolveRefs If true, a resource that is a reference to another 1039 * resource will be followed so that you receive the 1040 * actual final resource data. If false, the TypedValue 1041 * will be filled in with the reference itself. 1042 * 1043 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1044 * 1045 */ 1046 public void getValue(String name, TypedValue outValue, boolean resolveRefs) 1047 throws NotFoundException { 1048 int id = getIdentifier(name, "string", null); 1049 if (id != 0) { 1050 getValue(id, outValue, resolveRefs); 1051 return; 1052 } 1053 throw new NotFoundException("String resource name " + name); 1054 } 1055 1056 /** 1057 * This class holds the current attribute values for a particular theme. 1058 * In other words, a Theme is a set of values for resource attributes; 1059 * these are used in conjunction with {@link TypedArray} 1060 * to resolve the final value for an attribute. 1061 * 1062 * <p>The Theme's attributes come into play in two ways: (1) a styled 1063 * attribute can explicit reference a value in the theme through the 1064 * "?themeAttribute" syntax; (2) if no value has been defined for a 1065 * particular styled attribute, as a last resort we will try to find that 1066 * attribute's value in the Theme. 1067 * 1068 * <p>You will normally use the {@link #obtainStyledAttributes} APIs to 1069 * retrieve XML attributes with style and theme information applied. 1070 */ 1071 public final class Theme { 1072 /** 1073 * Place new attribute values into the theme. The style resource 1074 * specified by <var>resid</var> will be retrieved from this Theme's 1075 * resources, its values placed into the Theme object. 1076 * 1077 * <p>The semantics of this function depends on the <var>force</var> 1078 * argument: If false, only values that are not already defined in 1079 * the theme will be copied from the system resource; otherwise, if 1080 * any of the style's attributes are already defined in the theme, the 1081 * current values in the theme will be overwritten. 1082 * 1083 * @param resid The resource ID of a style resource from which to 1084 * obtain attribute values. 1085 * @param force If true, values in the style resource will always be 1086 * used in the theme; otherwise, they will only be used 1087 * if not already defined in the theme. 1088 */ 1089 public void applyStyle(int resid, boolean force) { 1090 AssetManager.applyThemeStyle(mTheme, resid, force); 1091 } 1092 1093 /** 1094 * Set this theme to hold the same contents as the theme 1095 * <var>other</var>. If both of these themes are from the same 1096 * Resources object, they will be identical after this function 1097 * returns. If they are from different Resources, only the resources 1098 * they have in common will be set in this theme. 1099 * 1100 * @param other The existing Theme to copy from. 1101 */ 1102 public void setTo(Theme other) { 1103 AssetManager.copyTheme(mTheme, other.mTheme); 1104 } 1105 1106 /** 1107 * Return a StyledAttributes holding the values defined by 1108 * <var>Theme</var> which are listed in <var>attrs</var>. 1109 * 1110 * <p>Be sure to call StyledAttributes.recycle() when you are done with 1111 * the array. 1112 * 1113 * @param attrs The desired attributes. 1114 * 1115 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1116 * 1117 * @return Returns a TypedArray holding an array of the attribute values. 1118 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1119 * when done with it. 1120 * 1121 * @see Resources#obtainAttributes 1122 * @see #obtainStyledAttributes(int, int[]) 1123 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1124 */ 1125 public TypedArray obtainStyledAttributes(int[] attrs) { 1126 int len = attrs.length; 1127 TypedArray array = getCachedStyledAttributes(len); 1128 array.mRsrcs = attrs; 1129 AssetManager.applyStyle(mTheme, 0, 0, 0, attrs, 1130 array.mData, array.mIndices); 1131 return array; 1132 } 1133 1134 /** 1135 * Return a StyledAttributes holding the values defined by the style 1136 * resource <var>resid</var> which are listed in <var>attrs</var>. 1137 * 1138 * <p>Be sure to call StyledAttributes.recycle() when you are done with 1139 * the array. 1140 * 1141 * @param resid The desired style resource. 1142 * @param attrs The desired attributes in the style. 1143 * 1144 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1145 * 1146 * @return Returns a TypedArray holding an array of the attribute values. 1147 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1148 * when done with it. 1149 * 1150 * @see Resources#obtainAttributes 1151 * @see #obtainStyledAttributes(int[]) 1152 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1153 */ 1154 public TypedArray obtainStyledAttributes(int resid, int[] attrs) 1155 throws NotFoundException { 1156 int len = attrs.length; 1157 TypedArray array = getCachedStyledAttributes(len); 1158 array.mRsrcs = attrs; 1159 1160 AssetManager.applyStyle(mTheme, 0, resid, 0, attrs, 1161 array.mData, array.mIndices); 1162 if (false) { 1163 int[] data = array.mData; 1164 1165 System.out.println("**********************************************************"); 1166 System.out.println("**********************************************************"); 1167 System.out.println("**********************************************************"); 1168 System.out.println("Attributes:"); 1169 String s = " Attrs:"; 1170 int i; 1171 for (i=0; i<attrs.length; i++) { 1172 s = s + " 0x" + Integer.toHexString(attrs[i]); 1173 } 1174 System.out.println(s); 1175 s = " Found:"; 1176 TypedValue value = new TypedValue(); 1177 for (i=0; i<attrs.length; i++) { 1178 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1179 value.type = data[d+AssetManager.STYLE_TYPE]; 1180 value.data = data[d+AssetManager.STYLE_DATA]; 1181 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1182 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1183 s = s + " 0x" + Integer.toHexString(attrs[i]) 1184 + "=" + value; 1185 } 1186 System.out.println(s); 1187 } 1188 return array; 1189 } 1190 1191 /** 1192 * Return a StyledAttributes holding the attribute values in 1193 * <var>set</var> 1194 * that are listed in <var>attrs</var>. In addition, if the given 1195 * AttributeSet specifies a style class (through the "style" attribute), 1196 * that style will be applied on top of the base attributes it defines. 1197 * 1198 * <p>Be sure to call StyledAttributes.recycle() when you are done with 1199 * the array. 1200 * 1201 * <p>When determining the final value of a particular attribute, there 1202 * are four inputs that come into play:</p> 1203 * 1204 * <ol> 1205 * <li> Any attribute values in the given AttributeSet. 1206 * <li> The style resource specified in the AttributeSet (named 1207 * "style"). 1208 * <li> The default style specified by <var>defStyleAttr</var> and 1209 * <var>defStyleRes</var> 1210 * <li> The base values in this theme. 1211 * </ol> 1212 * 1213 * <p>Each of these inputs is considered in-order, with the first listed 1214 * taking precedence over the following ones. In other words, if in the 1215 * AttributeSet you have supplied <code><Button 1216 * textColor="#ff000000"></code>, then the button's text will 1217 * <em>always</em> be black, regardless of what is specified in any of 1218 * the styles. 1219 * 1220 * @param set The base set of attribute values. May be null. 1221 * @param attrs The desired attributes to be retrieved. 1222 * @param defStyleAttr An attribute in the current theme that contains a 1223 * reference to a style resource that supplies 1224 * defaults values for the StyledAttributes. Can be 1225 * 0 to not look for defaults. 1226 * @param defStyleRes A resource identifier of a style resource that 1227 * supplies default values for the StyledAttributes, 1228 * used only if defStyleAttr is 0 or can not be found 1229 * in the theme. Can be 0 to not look for defaults. 1230 * 1231 * @return Returns a TypedArray holding an array of the attribute values. 1232 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1233 * when done with it. 1234 * 1235 * @see Resources#obtainAttributes 1236 * @see #obtainStyledAttributes(int[]) 1237 * @see #obtainStyledAttributes(int, int[]) 1238 */ 1239 public TypedArray obtainStyledAttributes(AttributeSet set, 1240 int[] attrs, int defStyleAttr, int defStyleRes) { 1241 int len = attrs.length; 1242 TypedArray array = getCachedStyledAttributes(len); 1243 1244 // XXX note that for now we only work with compiled XML files. 1245 // To support generic XML files we will need to manually parse 1246 // out the attributes from the XML file (applying type information 1247 // contained in the resources and such). 1248 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1249 AssetManager.applyStyle( 1250 mTheme, defStyleAttr, defStyleRes, 1251 parser != null ? parser.mParseState : 0, attrs, 1252 array.mData, array.mIndices); 1253 1254 array.mRsrcs = attrs; 1255 array.mXml = parser; 1256 1257 if (false) { 1258 int[] data = array.mData; 1259 1260 System.out.println("Attributes:"); 1261 String s = " Attrs:"; 1262 int i; 1263 for (i=0; i<set.getAttributeCount(); i++) { 1264 s = s + " " + set.getAttributeName(i); 1265 int id = set.getAttributeNameResource(i); 1266 if (id != 0) { 1267 s = s + "(0x" + Integer.toHexString(id) + ")"; 1268 } 1269 s = s + "=" + set.getAttributeValue(i); 1270 } 1271 System.out.println(s); 1272 s = " Found:"; 1273 TypedValue value = new TypedValue(); 1274 for (i=0; i<attrs.length; i++) { 1275 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1276 value.type = data[d+AssetManager.STYLE_TYPE]; 1277 value.data = data[d+AssetManager.STYLE_DATA]; 1278 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1279 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1280 s = s + " 0x" + Integer.toHexString(attrs[i]) 1281 + "=" + value; 1282 } 1283 System.out.println(s); 1284 } 1285 1286 return array; 1287 } 1288 1289 /** 1290 * Retrieve the value of an attribute in the Theme. The contents of 1291 * <var>outValue</var> are ultimately filled in by 1292 * {@link Resources#getValue}. 1293 * 1294 * @param resid The resource identifier of the desired theme 1295 * attribute. 1296 * @param outValue Filled in with the ultimate resource value supplied 1297 * by the attribute. 1298 * @param resolveRefs If true, resource references will be walked; if 1299 * false, <var>outValue</var> may be a 1300 * TYPE_REFERENCE. In either case, it will never 1301 * be a TYPE_ATTRIBUTE. 1302 * 1303 * @return boolean Returns true if the attribute was found and 1304 * <var>outValue</var> is valid, else false. 1305 */ 1306 public boolean resolveAttribute(int resid, TypedValue outValue, 1307 boolean resolveRefs) { 1308 boolean got = mAssets.getThemeValue(mTheme, resid, outValue, resolveRefs); 1309 if (false) { 1310 System.out.println( 1311 "resolveAttribute #" + Integer.toHexString(resid) 1312 + " got=" + got + ", type=0x" + Integer.toHexString(outValue.type) 1313 + ", data=0x" + Integer.toHexString(outValue.data)); 1314 } 1315 return got; 1316 } 1317 1318 /** 1319 * Print contents of this theme out to the log. For debugging only. 1320 * 1321 * @param priority The log priority to use. 1322 * @param tag The log tag to use. 1323 * @param prefix Text to prefix each line printed. 1324 */ 1325 public void dump(int priority, String tag, String prefix) { 1326 AssetManager.dumpTheme(mTheme, priority, tag, prefix); 1327 } 1328 1329 protected void finalize() throws Throwable { 1330 super.finalize(); 1331 mAssets.releaseTheme(mTheme); 1332 } 1333 1334 /*package*/ Theme() { 1335 mAssets = Resources.this.mAssets; 1336 mTheme = mAssets.createTheme(); 1337 } 1338 1339 private final AssetManager mAssets; 1340 private final int mTheme; 1341 } 1342 1343 /** 1344 * Generate a new Theme object for this set of Resources. It initially 1345 * starts out empty. 1346 * 1347 * @return Theme The newly created Theme container. 1348 */ 1349 public final Theme newTheme() { 1350 return new Theme(); 1351 } 1352 1353 /** 1354 * Retrieve a set of basic attribute values from an AttributeSet, not 1355 * performing styling of them using a theme and/or style resources. 1356 * 1357 * @param set The current attribute values to retrieve. 1358 * @param attrs The specific attributes to be retrieved. 1359 * @return Returns a TypedArray holding an array of the attribute values. 1360 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1361 * when done with it. 1362 * 1363 * @see Theme#obtainStyledAttributes(AttributeSet, int[], int, int) 1364 */ 1365 public TypedArray obtainAttributes(AttributeSet set, int[] attrs) { 1366 int len = attrs.length; 1367 TypedArray array = getCachedStyledAttributes(len); 1368 1369 // XXX note that for now we only work with compiled XML files. 1370 // To support generic XML files we will need to manually parse 1371 // out the attributes from the XML file (applying type information 1372 // contained in the resources and such). 1373 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1374 mAssets.retrieveAttributes(parser.mParseState, attrs, 1375 array.mData, array.mIndices); 1376 1377 array.mRsrcs = attrs; 1378 array.mXml = parser; 1379 1380 return array; 1381 } 1382 1383 /** 1384 * Store the newly updated configuration. 1385 */ 1386 public void updateConfiguration(Configuration config, 1387 DisplayMetrics metrics) { 1388 updateConfiguration(config, metrics, null); 1389 } 1390 1391 /** 1392 * @hide 1393 */ 1394 public void updateConfiguration(Configuration config, 1395 DisplayMetrics metrics, CompatibilityInfo compat) { 1396 synchronized (mTmpValue) { 1397 if (false) { 1398 Slog.i(TAG, "**** Updating config of " + this + ": old config is " 1399 + mConfiguration + " old compat is " + mCompatibilityInfo); 1400 Slog.i(TAG, "**** Updating config of " + this + ": new config is " 1401 + config + " new compat is " + compat); 1402 } 1403 if (compat != null) { 1404 mCompatibilityInfo = compat; 1405 } 1406 if (metrics != null) { 1407 mMetrics.setTo(metrics); 1408 } 1409 // NOTE: We should re-arrange this code to create a Display 1410 // with the CompatibilityInfo that is used everywhere we deal 1411 // with the display in relation to this app, rather than 1412 // doing the conversion here. This impl should be okay because 1413 // we make sure to return a compatible display in the places 1414 // where there are public APIs to retrieve the display... but 1415 // it would be cleaner and more maintainble to just be 1416 // consistently dealing with a compatible display everywhere in 1417 // the framework. 1418 if (mCompatibilityInfo != null) { 1419 mCompatibilityInfo.applyToDisplayMetrics(mMetrics); 1420 } 1421 int configChanges = 0xfffffff; 1422 if (config != null) { 1423 mTmpConfig.setTo(config); 1424 if (mCompatibilityInfo != null) { 1425 mCompatibilityInfo.applyToConfiguration(mTmpConfig); 1426 } 1427 if (mTmpConfig.locale == null) { 1428 mTmpConfig.locale = Locale.getDefault(); 1429 } 1430 configChanges = mConfiguration.updateFrom(mTmpConfig); 1431 configChanges = ActivityInfo.activityInfoConfigToNative(configChanges); 1432 } 1433 if (mConfiguration.locale == null) { 1434 mConfiguration.locale = Locale.getDefault(); 1435 } 1436 mMetrics.scaledDensity = mMetrics.density * mConfiguration.fontScale; 1437 1438 String locale = null; 1439 if (mConfiguration.locale != null) { 1440 locale = mConfiguration.locale.getLanguage(); 1441 if (mConfiguration.locale.getCountry() != null) { 1442 locale += "-" + mConfiguration.locale.getCountry(); 1443 } 1444 } 1445 int width, height; 1446 if (mMetrics.widthPixels >= mMetrics.heightPixels) { 1447 width = mMetrics.widthPixels; 1448 height = mMetrics.heightPixels; 1449 } else { 1450 //noinspection SuspiciousNameCombination 1451 width = mMetrics.heightPixels; 1452 //noinspection SuspiciousNameCombination 1453 height = mMetrics.widthPixels; 1454 } 1455 int keyboardHidden = mConfiguration.keyboardHidden; 1456 if (keyboardHidden == Configuration.KEYBOARDHIDDEN_NO 1457 && mConfiguration.hardKeyboardHidden 1458 == Configuration.HARDKEYBOARDHIDDEN_YES) { 1459 keyboardHidden = Configuration.KEYBOARDHIDDEN_SOFT; 1460 } 1461 mAssets.setConfiguration(mConfiguration.mcc, mConfiguration.mnc, 1462 locale, mConfiguration.orientation, 1463 mConfiguration.touchscreen, 1464 (int)(mMetrics.density*160), mConfiguration.keyboard, 1465 keyboardHidden, mConfiguration.navigation, width, height, 1466 mConfiguration.smallestScreenWidthDp, 1467 mConfiguration.screenWidthDp, mConfiguration.screenHeightDp, 1468 mConfiguration.screenLayout, mConfiguration.uiMode, 1469 Build.VERSION.RESOURCES_SDK_INT); 1470 1471 if (DEBUG_CONFIG) { 1472 Slog.i(TAG, "**** Updating config of " + this + ": final config is " + mConfiguration 1473 + " final compat is " + mCompatibilityInfo); 1474 } 1475 1476 clearDrawableCache(mDrawableCache, configChanges); 1477 clearDrawableCache(mColorDrawableCache, configChanges); 1478 1479 mColorStateListCache.clear(); 1480 1481 flushLayoutCache(); 1482 } 1483 synchronized (mSync) { 1484 if (mPluralRule != null) { 1485 mPluralRule = NativePluralRules.forLocale(config.locale); 1486 } 1487 } 1488 } 1489 1490 private void clearDrawableCache( 1491 LongSparseArray<WeakReference<ConstantState>> cache, 1492 int configChanges) { 1493 int N = cache.size(); 1494 if (DEBUG_CONFIG) { 1495 Log.d(TAG, "Cleaning up drawables config changes: 0x" 1496 + Integer.toHexString(configChanges)); 1497 } 1498 for (int i=0; i<N; i++) { 1499 WeakReference<Drawable.ConstantState> ref = cache.valueAt(i); 1500 if (ref != null) { 1501 Drawable.ConstantState cs = ref.get(); 1502 if (cs != null) { 1503 if (Configuration.needNewResources( 1504 configChanges, cs.getChangingConfigurations())) { 1505 if (DEBUG_CONFIG) { 1506 Log.d(TAG, "FLUSHING #0x" 1507 + Long.toHexString(mDrawableCache.keyAt(i)) 1508 + " / " + cs + " with changes: 0x" 1509 + Integer.toHexString(cs.getChangingConfigurations())); 1510 } 1511 cache.setValueAt(i, null); 1512 } else if (DEBUG_CONFIG) { 1513 Log.d(TAG, "(Keeping #0x" 1514 + Long.toHexString(cache.keyAt(i)) 1515 + " / " + cs + " with changes: 0x" 1516 + Integer.toHexString(cs.getChangingConfigurations()) 1517 + ")"); 1518 } 1519 } 1520 } 1521 } 1522 } 1523 1524 /** 1525 * Update the system resources configuration if they have previously 1526 * been initialized. 1527 * 1528 * @hide 1529 */ 1530 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics, 1531 CompatibilityInfo compat) { 1532 if (mSystem != null) { 1533 mSystem.updateConfiguration(config, metrics, compat); 1534 //Log.i(TAG, "Updated system resources " + mSystem 1535 // + ": " + mSystem.getConfiguration()); 1536 } 1537 } 1538 1539 /** 1540 * @hide 1541 */ 1542 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics) { 1543 updateSystemConfiguration(config, metrics, null); 1544 } 1545 1546 /** 1547 * Return the current display metrics that are in effect for this resource 1548 * object. The returned object should be treated as read-only. 1549 * 1550 * @return The resource's current display metrics. 1551 */ 1552 public DisplayMetrics getDisplayMetrics() { 1553 if (DEBUG_CONFIG) Slog.v(TAG, "Returning DisplayMetrics: " + mMetrics.widthPixels 1554 + "x" + mMetrics.heightPixels + " " + mMetrics.density); 1555 return mMetrics; 1556 } 1557 1558 /** 1559 * Return the current configuration that is in effect for this resource 1560 * object. The returned object should be treated as read-only. 1561 * 1562 * @return The resource's current configuration. 1563 */ 1564 public Configuration getConfiguration() { 1565 return mConfiguration; 1566 } 1567 1568 /** 1569 * Return the compatibility mode information for the application. 1570 * The returned object should be treated as read-only. 1571 * 1572 * @return compatibility info. 1573 * @hide 1574 */ 1575 public CompatibilityInfo getCompatibilityInfo() { 1576 return mCompatibilityInfo != null ? mCompatibilityInfo 1577 : CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 1578 } 1579 1580 /** 1581 * This is just for testing. 1582 * @hide 1583 */ 1584 public void setCompatibilityInfo(CompatibilityInfo ci) { 1585 mCompatibilityInfo = ci; 1586 updateConfiguration(mConfiguration, mMetrics); 1587 } 1588 1589 /** 1590 * Return a resource identifier for the given resource name. A fully 1591 * qualified resource name is of the form "package:type/entry". The first 1592 * two components (package and type) are optional if defType and 1593 * defPackage, respectively, are specified here. 1594 * 1595 * <p>Note: use of this function is discouraged. It is much more 1596 * efficient to retrieve resources by identifier than by name. 1597 * 1598 * @param name The name of the desired resource. 1599 * @param defType Optional default resource type to find, if "type/" is 1600 * not included in the name. Can be null to require an 1601 * explicit type. 1602 * @param defPackage Optional default package to find, if "package:" is 1603 * not included in the name. Can be null to require an 1604 * explicit package. 1605 * 1606 * @return int The associated resource identifier. Returns 0 if no such 1607 * resource was found. (0 is not a valid resource ID.) 1608 */ 1609 public int getIdentifier(String name, String defType, String defPackage) { 1610 try { 1611 return Integer.parseInt(name); 1612 } catch (Exception e) { 1613 // Ignore 1614 } 1615 return mAssets.getResourceIdentifier(name, defType, defPackage); 1616 } 1617 1618 /** 1619 * Return the full name for a given resource identifier. This name is 1620 * a single string of the form "package:type/entry". 1621 * 1622 * @param resid The resource identifier whose name is to be retrieved. 1623 * 1624 * @return A string holding the name of the resource. 1625 * 1626 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1627 * 1628 * @see #getResourcePackageName 1629 * @see #getResourceTypeName 1630 * @see #getResourceEntryName 1631 */ 1632 public String getResourceName(int resid) throws NotFoundException { 1633 String str = mAssets.getResourceName(resid); 1634 if (str != null) return str; 1635 throw new NotFoundException("Unable to find resource ID #0x" 1636 + Integer.toHexString(resid)); 1637 } 1638 1639 /** 1640 * Return the package name for a given resource identifier. 1641 * 1642 * @param resid The resource identifier whose package name is to be 1643 * retrieved. 1644 * 1645 * @return A string holding the package name of the resource. 1646 * 1647 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1648 * 1649 * @see #getResourceName 1650 */ 1651 public String getResourcePackageName(int resid) throws NotFoundException { 1652 String str = mAssets.getResourcePackageName(resid); 1653 if (str != null) return str; 1654 throw new NotFoundException("Unable to find resource ID #0x" 1655 + Integer.toHexString(resid)); 1656 } 1657 1658 /** 1659 * Return the type name for a given resource identifier. 1660 * 1661 * @param resid The resource identifier whose type name is to be 1662 * retrieved. 1663 * 1664 * @return A string holding the type name of the resource. 1665 * 1666 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1667 * 1668 * @see #getResourceName 1669 */ 1670 public String getResourceTypeName(int resid) throws NotFoundException { 1671 String str = mAssets.getResourceTypeName(resid); 1672 if (str != null) return str; 1673 throw new NotFoundException("Unable to find resource ID #0x" 1674 + Integer.toHexString(resid)); 1675 } 1676 1677 /** 1678 * Return the entry name for a given resource identifier. 1679 * 1680 * @param resid The resource identifier whose entry name is to be 1681 * retrieved. 1682 * 1683 * @return A string holding the entry name of the resource. 1684 * 1685 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1686 * 1687 * @see #getResourceName 1688 */ 1689 public String getResourceEntryName(int resid) throws NotFoundException { 1690 String str = mAssets.getResourceEntryName(resid); 1691 if (str != null) return str; 1692 throw new NotFoundException("Unable to find resource ID #0x" 1693 + Integer.toHexString(resid)); 1694 } 1695 1696 /** 1697 * Parse a series of {@link android.R.styleable#Extra <extra>} tags from 1698 * an XML file. You call this when you are at the parent tag of the 1699 * extra tags, and it will return once all of the child tags have been parsed. 1700 * This will call {@link #parseBundleExtra} for each extra tag encountered. 1701 * 1702 * @param parser The parser from which to retrieve the extras. 1703 * @param outBundle A Bundle in which to place all parsed extras. 1704 * @throws XmlPullParserException 1705 * @throws IOException 1706 */ 1707 public void parseBundleExtras(XmlResourceParser parser, Bundle outBundle) 1708 throws XmlPullParserException, IOException { 1709 int outerDepth = parser.getDepth(); 1710 int type; 1711 while ((type=parser.next()) != XmlPullParser.END_DOCUMENT 1712 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 1713 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 1714 continue; 1715 } 1716 1717 String nodeName = parser.getName(); 1718 if (nodeName.equals("extra")) { 1719 parseBundleExtra("extra", parser, outBundle); 1720 XmlUtils.skipCurrentTag(parser); 1721 1722 } else { 1723 XmlUtils.skipCurrentTag(parser); 1724 } 1725 } 1726 } 1727 1728 /** 1729 * Parse a name/value pair out of an XML tag holding that data. The 1730 * AttributeSet must be holding the data defined by 1731 * {@link android.R.styleable#Extra}. The following value types are supported: 1732 * <ul> 1733 * <li> {@link TypedValue#TYPE_STRING}: 1734 * {@link Bundle#putCharSequence Bundle.putCharSequence()} 1735 * <li> {@link TypedValue#TYPE_INT_BOOLEAN}: 1736 * {@link Bundle#putCharSequence Bundle.putBoolean()} 1737 * <li> {@link TypedValue#TYPE_FIRST_INT}-{@link TypedValue#TYPE_LAST_INT}: 1738 * {@link Bundle#putCharSequence Bundle.putBoolean()} 1739 * <li> {@link TypedValue#TYPE_FLOAT}: 1740 * {@link Bundle#putCharSequence Bundle.putFloat()} 1741 * </ul> 1742 * 1743 * @param tagName The name of the tag these attributes come from; this is 1744 * only used for reporting error messages. 1745 * @param attrs The attributes from which to retrieve the name/value pair. 1746 * @param outBundle The Bundle in which to place the parsed value. 1747 * @throws XmlPullParserException If the attributes are not valid. 1748 */ 1749 public void parseBundleExtra(String tagName, AttributeSet attrs, 1750 Bundle outBundle) throws XmlPullParserException { 1751 TypedArray sa = obtainAttributes(attrs, 1752 com.android.internal.R.styleable.Extra); 1753 1754 String name = sa.getString( 1755 com.android.internal.R.styleable.Extra_name); 1756 if (name == null) { 1757 sa.recycle(); 1758 throw new XmlPullParserException("<" + tagName 1759 + "> requires an android:name attribute at " 1760 + attrs.getPositionDescription()); 1761 } 1762 1763 TypedValue v = sa.peekValue( 1764 com.android.internal.R.styleable.Extra_value); 1765 if (v != null) { 1766 if (v.type == TypedValue.TYPE_STRING) { 1767 CharSequence cs = v.coerceToString(); 1768 outBundle.putCharSequence(name, cs); 1769 } else if (v.type == TypedValue.TYPE_INT_BOOLEAN) { 1770 outBundle.putBoolean(name, v.data != 0); 1771 } else if (v.type >= TypedValue.TYPE_FIRST_INT 1772 && v.type <= TypedValue.TYPE_LAST_INT) { 1773 outBundle.putInt(name, v.data); 1774 } else if (v.type == TypedValue.TYPE_FLOAT) { 1775 outBundle.putFloat(name, v.getFloat()); 1776 } else { 1777 sa.recycle(); 1778 throw new XmlPullParserException("<" + tagName 1779 + "> only supports string, integer, float, color, and boolean at " 1780 + attrs.getPositionDescription()); 1781 } 1782 } else { 1783 sa.recycle(); 1784 throw new XmlPullParserException("<" + tagName 1785 + "> requires an android:value or android:resource attribute at " 1786 + attrs.getPositionDescription()); 1787 } 1788 1789 sa.recycle(); 1790 } 1791 1792 /** 1793 * Retrieve underlying AssetManager storage for these resources. 1794 */ 1795 public final AssetManager getAssets() { 1796 return mAssets; 1797 } 1798 1799 /** 1800 * Call this to remove all cached loaded layout resources from the 1801 * Resources object. Only intended for use with performance testing 1802 * tools. 1803 */ 1804 public final void flushLayoutCache() { 1805 synchronized (mCachedXmlBlockIds) { 1806 // First see if this block is in our cache. 1807 final int num = mCachedXmlBlockIds.length; 1808 for (int i=0; i<num; i++) { 1809 mCachedXmlBlockIds[i] = -0; 1810 XmlBlock oldBlock = mCachedXmlBlocks[i]; 1811 if (oldBlock != null) { 1812 oldBlock.close(); 1813 } 1814 mCachedXmlBlocks[i] = null; 1815 } 1816 } 1817 } 1818 1819 /** 1820 * Start preloading of resource data using this Resources object. Only 1821 * for use by the zygote process for loading common system resources. 1822 * {@hide} 1823 */ 1824 public final void startPreloading() { 1825 synchronized (mSync) { 1826 if (mPreloaded) { 1827 throw new IllegalStateException("Resources already preloaded"); 1828 } 1829 mPreloaded = true; 1830 mPreloading = true; 1831 } 1832 } 1833 1834 /** 1835 * Called by zygote when it is done preloading resources, to change back 1836 * to normal Resources operation. 1837 */ 1838 public final void finishPreloading() { 1839 if (mPreloading) { 1840 mPreloading = false; 1841 flushLayoutCache(); 1842 } 1843 } 1844 1845 /*package*/ Drawable loadDrawable(TypedValue value, int id) 1846 throws NotFoundException { 1847 1848 if (TRACE_FOR_PRELOAD) { 1849 // Log only framework resources 1850 if ((id >>> 24) == 0x1) { 1851 final String name = getResourceName(id); 1852 if (name != null) android.util.Log.d("PreloadDrawable", name); 1853 } 1854 } 1855 1856 final long key = (((long) value.assetCookie) << 32) | value.data; 1857 boolean isColorDrawable = false; 1858 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 1859 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 1860 isColorDrawable = true; 1861 } 1862 Drawable dr = getCachedDrawable(isColorDrawable ? mColorDrawableCache : mDrawableCache, key); 1863 1864 if (dr != null) { 1865 return dr; 1866 } 1867 1868 Drawable.ConstantState cs = isColorDrawable ? 1869 sPreloadedColorDrawables.get(key) : sPreloadedDrawables.get(key); 1870 if (cs != null) { 1871 dr = cs.newDrawable(this); 1872 } else { 1873 if (isColorDrawable) { 1874 dr = new ColorDrawable(value.data); 1875 } 1876 1877 if (dr == null) { 1878 if (value.string == null) { 1879 throw new NotFoundException( 1880 "Resource is not a Drawable (color or path): " + value); 1881 } 1882 1883 String file = value.string.toString(); 1884 1885 if (TRACE_FOR_MISS_PRELOAD) { 1886 // Log only framework resources 1887 if ((id >>> 24) == 0x1) { 1888 final String name = getResourceName(id); 1889 if (name != null) android.util.Log.d(TAG, "Loading framework drawable #" 1890 + Integer.toHexString(id) + ": " + name 1891 + " at " + file); 1892 } 1893 } 1894 1895 if (DEBUG_LOAD) Log.v(TAG, "Loading drawable for cookie " 1896 + value.assetCookie + ": " + file); 1897 1898 if (file.endsWith(".xml")) { 1899 try { 1900 XmlResourceParser rp = loadXmlResourceParser( 1901 file, id, value.assetCookie, "drawable"); 1902 dr = Drawable.createFromXml(this, rp); 1903 rp.close(); 1904 } catch (Exception e) { 1905 NotFoundException rnf = new NotFoundException( 1906 "File " + file + " from drawable resource ID #0x" 1907 + Integer.toHexString(id)); 1908 rnf.initCause(e); 1909 throw rnf; 1910 } 1911 1912 } else { 1913 try { 1914 InputStream is = mAssets.openNonAsset( 1915 value.assetCookie, file, AssetManager.ACCESS_STREAMING); 1916 // System.out.println("Opened file " + file + ": " + is); 1917 dr = Drawable.createFromResourceStream(this, value, is, 1918 file, null); 1919 is.close(); 1920 // System.out.println("Created stream: " + dr); 1921 } catch (Exception e) { 1922 NotFoundException rnf = new NotFoundException( 1923 "File " + file + " from drawable resource ID #0x" 1924 + Integer.toHexString(id)); 1925 rnf.initCause(e); 1926 throw rnf; 1927 } 1928 } 1929 } 1930 } 1931 1932 if (dr != null) { 1933 dr.setChangingConfigurations(value.changingConfigurations); 1934 cs = dr.getConstantState(); 1935 if (cs != null) { 1936 if (mPreloading) { 1937 if (isColorDrawable) { 1938 sPreloadedColorDrawables.put(key, cs); 1939 } else { 1940 sPreloadedDrawables.put(key, cs); 1941 } 1942 } else { 1943 synchronized (mTmpValue) { 1944 //Log.i(TAG, "Saving cached drawable @ #" + 1945 // Integer.toHexString(key.intValue()) 1946 // + " in " + this + ": " + cs); 1947 if (isColorDrawable) { 1948 mColorDrawableCache.put(key, new WeakReference<Drawable.ConstantState>(cs)); 1949 } else { 1950 mDrawableCache.put(key, new WeakReference<Drawable.ConstantState>(cs)); 1951 } 1952 } 1953 } 1954 } 1955 } 1956 1957 return dr; 1958 } 1959 1960 private Drawable getCachedDrawable( 1961 LongSparseArray<WeakReference<ConstantState>> drawableCache, 1962 long key) { 1963 synchronized (mTmpValue) { 1964 WeakReference<Drawable.ConstantState> wr = drawableCache.get(key); 1965 if (wr != null) { // we have the key 1966 Drawable.ConstantState entry = wr.get(); 1967 if (entry != null) { 1968 //Log.i(TAG, "Returning cached drawable @ #" + 1969 // Integer.toHexString(((Integer)key).intValue()) 1970 // + " in " + this + ": " + entry); 1971 return entry.newDrawable(this); 1972 } 1973 else { // our entry has been purged 1974 drawableCache.delete(key); 1975 } 1976 } 1977 } 1978 return null; 1979 } 1980 1981 /*package*/ ColorStateList loadColorStateList(TypedValue value, int id) 1982 throws NotFoundException { 1983 if (TRACE_FOR_PRELOAD) { 1984 // Log only framework resources 1985 if ((id >>> 24) == 0x1) { 1986 final String name = getResourceName(id); 1987 if (name != null) android.util.Log.d("PreloadColorStateList", name); 1988 } 1989 } 1990 1991 final long key = (((long) value.assetCookie) << 32) | value.data; 1992 1993 ColorStateList csl; 1994 1995 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 1996 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 1997 1998 csl = sPreloadedColorStateLists.get(key); 1999 if (csl != null) { 2000 return csl; 2001 } 2002 2003 csl = ColorStateList.valueOf(value.data); 2004 if (mPreloading) { 2005 sPreloadedColorStateLists.put(key, csl); 2006 } 2007 2008 return csl; 2009 } 2010 2011 csl = getCachedColorStateList(key); 2012 if (csl != null) { 2013 return csl; 2014 } 2015 2016 csl = sPreloadedColorStateLists.get(key); 2017 if (csl != null) { 2018 return csl; 2019 } 2020 2021 if (value.string == null) { 2022 throw new NotFoundException( 2023 "Resource is not a ColorStateList (color or path): " + value); 2024 } 2025 2026 String file = value.string.toString(); 2027 2028 if (file.endsWith(".xml")) { 2029 try { 2030 XmlResourceParser rp = loadXmlResourceParser( 2031 file, id, value.assetCookie, "colorstatelist"); 2032 csl = ColorStateList.createFromXml(this, rp); 2033 rp.close(); 2034 } catch (Exception e) { 2035 NotFoundException rnf = new NotFoundException( 2036 "File " + file + " from color state list resource ID #0x" 2037 + Integer.toHexString(id)); 2038 rnf.initCause(e); 2039 throw rnf; 2040 } 2041 } else { 2042 throw new NotFoundException( 2043 "File " + file + " from drawable resource ID #0x" 2044 + Integer.toHexString(id) + ": .xml extension required"); 2045 } 2046 2047 if (csl != null) { 2048 if (mPreloading) { 2049 sPreloadedColorStateLists.put(key, csl); 2050 } else { 2051 synchronized (mTmpValue) { 2052 //Log.i(TAG, "Saving cached color state list @ #" + 2053 // Integer.toHexString(key.intValue()) 2054 // + " in " + this + ": " + csl); 2055 mColorStateListCache.put(key, new WeakReference<ColorStateList>(csl)); 2056 } 2057 } 2058 } 2059 2060 return csl; 2061 } 2062 2063 private ColorStateList getCachedColorStateList(long key) { 2064 synchronized (mTmpValue) { 2065 WeakReference<ColorStateList> wr = mColorStateListCache.get(key); 2066 if (wr != null) { // we have the key 2067 ColorStateList entry = wr.get(); 2068 if (entry != null) { 2069 //Log.i(TAG, "Returning cached color state list @ #" + 2070 // Integer.toHexString(((Integer)key).intValue()) 2071 // + " in " + this + ": " + entry); 2072 return entry; 2073 } else { // our entry has been purged 2074 mColorStateListCache.delete(key); 2075 } 2076 } 2077 } 2078 return null; 2079 } 2080 2081 /*package*/ XmlResourceParser loadXmlResourceParser(int id, String type) 2082 throws NotFoundException { 2083 synchronized (mTmpValue) { 2084 TypedValue value = mTmpValue; 2085 getValue(id, value, true); 2086 if (value.type == TypedValue.TYPE_STRING) { 2087 return loadXmlResourceParser(value.string.toString(), id, 2088 value.assetCookie, type); 2089 } 2090 throw new NotFoundException( 2091 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 2092 + Integer.toHexString(value.type) + " is not valid"); 2093 } 2094 } 2095 2096 /*package*/ XmlResourceParser loadXmlResourceParser(String file, int id, 2097 int assetCookie, String type) throws NotFoundException { 2098 if (id != 0) { 2099 try { 2100 // These may be compiled... 2101 synchronized (mCachedXmlBlockIds) { 2102 // First see if this block is in our cache. 2103 final int num = mCachedXmlBlockIds.length; 2104 for (int i=0; i<num; i++) { 2105 if (mCachedXmlBlockIds[i] == id) { 2106 //System.out.println("**** REUSING XML BLOCK! id=" 2107 // + id + ", index=" + i); 2108 return mCachedXmlBlocks[i].newParser(); 2109 } 2110 } 2111 2112 // Not in the cache, create a new block and put it at 2113 // the next slot in the cache. 2114 XmlBlock block = mAssets.openXmlBlockAsset( 2115 assetCookie, file); 2116 if (block != null) { 2117 int pos = mLastCachedXmlBlockIndex+1; 2118 if (pos >= num) pos = 0; 2119 mLastCachedXmlBlockIndex = pos; 2120 XmlBlock oldBlock = mCachedXmlBlocks[pos]; 2121 if (oldBlock != null) { 2122 oldBlock.close(); 2123 } 2124 mCachedXmlBlockIds[pos] = id; 2125 mCachedXmlBlocks[pos] = block; 2126 //System.out.println("**** CACHING NEW XML BLOCK! id=" 2127 // + id + ", index=" + pos); 2128 return block.newParser(); 2129 } 2130 } 2131 } catch (Exception e) { 2132 NotFoundException rnf = new NotFoundException( 2133 "File " + file + " from xml type " + type + " resource ID #0x" 2134 + Integer.toHexString(id)); 2135 rnf.initCause(e); 2136 throw rnf; 2137 } 2138 } 2139 2140 throw new NotFoundException( 2141 "File " + file + " from xml type " + type + " resource ID #0x" 2142 + Integer.toHexString(id)); 2143 } 2144 2145 private TypedArray getCachedStyledAttributes(int len) { 2146 synchronized (mTmpValue) { 2147 TypedArray attrs = mCachedStyledAttributes; 2148 if (attrs != null) { 2149 mCachedStyledAttributes = null; 2150 if (DEBUG_ATTRIBUTES_CACHE) { 2151 mLastRetrievedAttrs = new RuntimeException("here"); 2152 mLastRetrievedAttrs.fillInStackTrace(); 2153 } 2154 2155 attrs.mLength = len; 2156 int fullLen = len * AssetManager.STYLE_NUM_ENTRIES; 2157 if (attrs.mData.length >= fullLen) { 2158 return attrs; 2159 } 2160 attrs.mData = new int[fullLen]; 2161 attrs.mIndices = new int[1+len]; 2162 return attrs; 2163 } 2164 if (DEBUG_ATTRIBUTES_CACHE) { 2165 RuntimeException here = new RuntimeException("here"); 2166 here.fillInStackTrace(); 2167 if (mLastRetrievedAttrs != null) { 2168 Log.i(TAG, "Allocated new TypedArray of " + len + " in " + this, here); 2169 Log.i(TAG, "Last retrieved attributes here", mLastRetrievedAttrs); 2170 } 2171 mLastRetrievedAttrs = here; 2172 } 2173 return new TypedArray(this, 2174 new int[len*AssetManager.STYLE_NUM_ENTRIES], 2175 new int[1+len], len); 2176 } 2177 } 2178 2179 private Resources() { 2180 mAssets = AssetManager.getSystem(); 2181 // NOTE: Intentionally leaving this uninitialized (all values set 2182 // to zero), so that anyone who tries to do something that requires 2183 // metrics will get a very wrong value. 2184 mConfiguration.setToDefaults(); 2185 mMetrics.setToDefaults(); 2186 updateConfiguration(null, null); 2187 mAssets.ensureStringBlocks(); 2188 mCompatibilityInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 2189 } 2190} 2191