Resources.java revision 50707cc8206f0d257ba83de2f1f99c3eaa13a4bd
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 sSync = 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 sPreloaded; 93 private static int sPreloadedDensity; 94 95 // These are protected by mAccessLock. 96 97 /*package*/ final Object mAccessLock = new Object(); 98 /*package*/ final Configuration mTmpConfig = new Configuration(); 99 /*package*/ TypedValue mTmpValue = new TypedValue(); 100 /*package*/ final LongSparseArray<WeakReference<Drawable.ConstantState> > mDrawableCache 101 = new LongSparseArray<WeakReference<Drawable.ConstantState> >(); 102 /*package*/ final LongSparseArray<WeakReference<ColorStateList> > mColorStateListCache 103 = new LongSparseArray<WeakReference<ColorStateList> >(); 104 /*package*/ final LongSparseArray<WeakReference<Drawable.ConstantState> > mColorDrawableCache 105 = new LongSparseArray<WeakReference<Drawable.ConstantState> >(); 106 /*package*/ boolean mPreloading; 107 108 /*package*/ TypedArray mCachedStyledAttributes = null; 109 RuntimeException mLastRetrievedAttrs = null; 110 111 private int mLastCachedXmlBlockIndex = -1; 112 private final int[] mCachedXmlBlockIds = { 0, 0, 0, 0 }; 113 private final XmlBlock[] mCachedXmlBlocks = new XmlBlock[4]; 114 115 /*package*/ final AssetManager mAssets; 116 private final Configuration mConfiguration = new Configuration(); 117 /*package*/ final DisplayMetrics mMetrics = new DisplayMetrics(); 118 private NativePluralRules mPluralRule; 119 120 private CompatibilityInfo mCompatibilityInfo; 121 122 /** @hide */ 123 public static int selectDefaultTheme(int curTheme, int targetSdkVersion) { 124 return selectSystemTheme(curTheme, targetSdkVersion, 125 com.android.internal.R.style.Theme, 126 com.android.internal.R.style.Theme_Holo, 127 com.android.internal.R.style.Theme_DeviceDefault); 128 } 129 130 /** @hide */ 131 public static int selectSystemTheme(int curTheme, int targetSdkVersion, 132 int orig, int holo, int deviceDefault) { 133 if (curTheme != 0) { 134 return curTheme; 135 } 136 if (targetSdkVersion < Build.VERSION_CODES.HONEYCOMB) { 137 return orig; 138 } 139 if (targetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 140 return holo; 141 } 142 return deviceDefault; 143 } 144 145 /** 146 * This exception is thrown by the resource APIs when a requested resource 147 * can not be found. 148 */ 149 public static class NotFoundException extends RuntimeException { 150 public NotFoundException() { 151 } 152 153 public NotFoundException(String name) { 154 super(name); 155 } 156 } 157 158 /** 159 * Create a new Resources object on top of an existing set of assets in an 160 * AssetManager. 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 */ 168 public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config) { 169 this(assets, metrics, config, null); 170 } 171 172 /** 173 * Creates a new Resources object with CompatibilityInfo. 174 * 175 * @param assets Previously created AssetManager. 176 * @param metrics Current display metrics to consider when 177 * selecting/computing resource values. 178 * @param config Desired device configuration to consider when 179 * selecting/computing resource values (optional). 180 * @param compInfo this resource's compatibility info. It will use the default compatibility 181 * info when it's null. 182 * @hide 183 */ 184 public Resources(AssetManager assets, DisplayMetrics metrics, 185 Configuration config, CompatibilityInfo compInfo) { 186 mAssets = assets; 187 mMetrics.setToDefaults(); 188 mCompatibilityInfo = compInfo; 189 updateConfiguration(config, metrics); 190 assets.ensureStringBlocks(); 191 } 192 193 /** 194 * Return a global shared Resources object that provides access to only 195 * system resources (no application resources), and is not configured for 196 * the current screen (can not use dimension units, does not change based 197 * on orientation, etc). 198 */ 199 public static Resources getSystem() { 200 synchronized (sSync) { 201 Resources ret = mSystem; 202 if (ret == null) { 203 ret = new Resources(); 204 mSystem = ret; 205 } 206 207 return ret; 208 } 209 } 210 211 /** 212 * Return the string value associated with a particular resource ID. The 213 * returned object will be a String if this is a plain string; it will be 214 * some other type of CharSequence if it is styled. 215 * {@more} 216 * 217 * @param id The desired resource identifier, as generated by the aapt 218 * tool. This integer encodes the package, type, and resource 219 * entry. The value 0 is an invalid identifier. 220 * 221 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 222 * 223 * @return CharSequence The string data associated with the resource, plus 224 * possibly styled text information. 225 */ 226 public CharSequence getText(int id) throws NotFoundException { 227 CharSequence res = mAssets.getResourceText(id); 228 if (res != null) { 229 return res; 230 } 231 throw new NotFoundException("String resource ID #0x" 232 + Integer.toHexString(id)); 233 } 234 235 /** 236 * Return the character sequence associated with a particular resource ID for a particular 237 * numerical quantity. 238 * 239 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 240 * Resources</a> for more on quantity strings. 241 * 242 * @param id The desired resource identifier, as generated by the aapt 243 * tool. This integer encodes the package, type, and resource 244 * entry. The value 0 is an invalid identifier. 245 * @param quantity The number used to get the correct string for the current language's 246 * plural rules. 247 * 248 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 249 * 250 * @return CharSequence The string data associated with the resource, plus 251 * possibly styled text information. 252 */ 253 public CharSequence getQuantityText(int id, int quantity) throws NotFoundException { 254 NativePluralRules rule = getPluralRule(); 255 CharSequence res = mAssets.getResourceBagText(id, 256 attrForQuantityCode(rule.quantityForInt(quantity))); 257 if (res != null) { 258 return res; 259 } 260 res = mAssets.getResourceBagText(id, ID_OTHER); 261 if (res != null) { 262 return res; 263 } 264 throw new NotFoundException("Plural resource ID #0x" + Integer.toHexString(id) 265 + " quantity=" + quantity 266 + " item=" + stringForQuantityCode(rule.quantityForInt(quantity))); 267 } 268 269 private NativePluralRules getPluralRule() { 270 synchronized (sSync) { 271 if (mPluralRule == null) { 272 mPluralRule = NativePluralRules.forLocale(mConfiguration.locale); 273 } 274 return mPluralRule; 275 } 276 } 277 278 private static int attrForQuantityCode(int quantityCode) { 279 switch (quantityCode) { 280 case NativePluralRules.ZERO: return 0x01000005; 281 case NativePluralRules.ONE: return 0x01000006; 282 case NativePluralRules.TWO: return 0x01000007; 283 case NativePluralRules.FEW: return 0x01000008; 284 case NativePluralRules.MANY: return 0x01000009; 285 default: return ID_OTHER; 286 } 287 } 288 289 private static String stringForQuantityCode(int quantityCode) { 290 switch (quantityCode) { 291 case NativePluralRules.ZERO: return "zero"; 292 case NativePluralRules.ONE: return "one"; 293 case NativePluralRules.TWO: return "two"; 294 case NativePluralRules.FEW: return "few"; 295 case NativePluralRules.MANY: return "many"; 296 default: return "other"; 297 } 298 } 299 300 /** 301 * Return the string value associated with a particular resource ID. It 302 * will be stripped of any styled text information. 303 * {@more} 304 * 305 * @param id The desired resource identifier, as generated by the aapt 306 * tool. This integer encodes the package, type, and resource 307 * entry. The value 0 is an invalid identifier. 308 * 309 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 310 * 311 * @return String The string data associated with the resource, 312 * stripped of styled text information. 313 */ 314 public String getString(int id) throws NotFoundException { 315 CharSequence res = getText(id); 316 if (res != null) { 317 return res.toString(); 318 } 319 throw new NotFoundException("String resource ID #0x" 320 + Integer.toHexString(id)); 321 } 322 323 324 /** 325 * Return the string value associated with a particular resource ID, 326 * substituting the format arguments as defined in {@link java.util.Formatter} 327 * and {@link java.lang.String#format}. It will be stripped of any styled text 328 * information. 329 * {@more} 330 * 331 * @param id The desired resource identifier, as generated by the aapt 332 * tool. This integer encodes the package, type, and resource 333 * entry. The value 0 is an invalid identifier. 334 * 335 * @param formatArgs The format arguments that will be used for substitution. 336 * 337 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 338 * 339 * @return String The string data associated with the resource, 340 * stripped of styled text information. 341 */ 342 public String getString(int id, Object... formatArgs) throws NotFoundException { 343 String raw = getString(id); 344 return String.format(mConfiguration.locale, raw, formatArgs); 345 } 346 347 /** 348 * Return the string value associated with a particular resource ID for a particular 349 * numerical quantity, substituting the format arguments as defined in 350 * {@link java.util.Formatter} and {@link java.lang.String#format}. It will be 351 * stripped of any styled text information. 352 * {@more} 353 * 354 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 355 * Resources</a> for more on quantity strings. 356 * 357 * @param id The desired resource identifier, as generated by the aapt 358 * tool. This integer encodes the package, type, and resource 359 * entry. The value 0 is an invalid identifier. 360 * @param quantity The number used to get the correct string for the current language's 361 * plural rules. 362 * @param formatArgs The format arguments that will be used for substitution. 363 * 364 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 365 * 366 * @return String The string data associated with the resource, 367 * stripped of styled text information. 368 */ 369 public String getQuantityString(int id, int quantity, Object... formatArgs) 370 throws NotFoundException { 371 String raw = getQuantityText(id, quantity).toString(); 372 return String.format(mConfiguration.locale, raw, formatArgs); 373 } 374 375 /** 376 * Return the string value associated with a particular resource ID for a particular 377 * numerical quantity. 378 * 379 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 380 * Resources</a> for more on quantity strings. 381 * 382 * @param id The desired resource identifier, as generated by the aapt 383 * tool. This integer encodes the package, type, and resource 384 * entry. The value 0 is an invalid identifier. 385 * @param quantity The number used to get the correct string for the current language's 386 * plural rules. 387 * 388 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 389 * 390 * @return String The string data associated with the resource, 391 * stripped of styled text information. 392 */ 393 public String getQuantityString(int id, int quantity) throws NotFoundException { 394 return getQuantityText(id, quantity).toString(); 395 } 396 397 /** 398 * Return the string value associated with a particular resource ID. The 399 * returned object will be a String if this is a plain string; it will be 400 * some other type of CharSequence if it is styled. 401 * 402 * @param id The desired resource identifier, as generated by the aapt 403 * tool. This integer encodes the package, type, and resource 404 * entry. The value 0 is an invalid identifier. 405 * 406 * @param def The default CharSequence to return. 407 * 408 * @return CharSequence The string data associated with the resource, plus 409 * possibly styled text information, or def if id is 0 or not found. 410 */ 411 public CharSequence getText(int id, CharSequence def) { 412 CharSequence res = id != 0 ? mAssets.getResourceText(id) : null; 413 return res != null ? res : def; 414 } 415 416 /** 417 * Return the styled text array associated with a particular resource ID. 418 * 419 * @param id The desired resource identifier, as generated by the aapt 420 * tool. This integer encodes the package, type, and resource 421 * entry. The value 0 is an invalid identifier. 422 * 423 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 424 * 425 * @return The styled text array associated with the resource. 426 */ 427 public CharSequence[] getTextArray(int id) throws NotFoundException { 428 CharSequence[] res = mAssets.getResourceTextArray(id); 429 if (res != null) { 430 return res; 431 } 432 throw new NotFoundException("Text array resource ID #0x" 433 + Integer.toHexString(id)); 434 } 435 436 /** 437 * Return the string array associated with a particular resource ID. 438 * 439 * @param id The desired resource identifier, as generated by the aapt 440 * tool. This integer encodes the package, type, and resource 441 * entry. The value 0 is an invalid identifier. 442 * 443 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 444 * 445 * @return The string array associated with the resource. 446 */ 447 public String[] getStringArray(int id) throws NotFoundException { 448 String[] res = mAssets.getResourceStringArray(id); 449 if (res != null) { 450 return res; 451 } 452 throw new NotFoundException("String array resource ID #0x" 453 + Integer.toHexString(id)); 454 } 455 456 /** 457 * Return the int array associated with a particular resource ID. 458 * 459 * @param id The desired resource identifier, as generated by the aapt 460 * tool. This integer encodes the package, type, and resource 461 * entry. The value 0 is an invalid identifier. 462 * 463 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 464 * 465 * @return The int array associated with the resource. 466 */ 467 public int[] getIntArray(int id) throws NotFoundException { 468 int[] res = mAssets.getArrayIntResource(id); 469 if (res != null) { 470 return res; 471 } 472 throw new NotFoundException("Int array resource ID #0x" 473 + Integer.toHexString(id)); 474 } 475 476 /** 477 * Return an array of heterogeneous values. 478 * 479 * @param id The desired resource identifier, as generated by the aapt 480 * tool. This integer encodes the package, type, and resource 481 * entry. The value 0 is an invalid identifier. 482 * 483 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 484 * 485 * @return Returns a TypedArray holding an array of the array values. 486 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 487 * when done with it. 488 */ 489 public TypedArray obtainTypedArray(int id) throws NotFoundException { 490 int len = mAssets.getArraySize(id); 491 if (len < 0) { 492 throw new NotFoundException("Array resource ID #0x" 493 + Integer.toHexString(id)); 494 } 495 496 TypedArray array = getCachedStyledAttributes(len); 497 array.mLength = mAssets.retrieveArray(id, array.mData); 498 array.mIndices[0] = 0; 499 500 return array; 501 } 502 503 /** 504 * Retrieve a dimensional for a particular resource ID. Unit 505 * conversions are based on the current {@link DisplayMetrics} associated 506 * with the resources. 507 * 508 * @param id The desired resource identifier, as generated by the aapt 509 * tool. This integer encodes the package, type, and resource 510 * entry. The value 0 is an invalid identifier. 511 * 512 * @return Resource dimension value multiplied by the appropriate 513 * metric. 514 * 515 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 516 * 517 * @see #getDimensionPixelOffset 518 * @see #getDimensionPixelSize 519 */ 520 public float getDimension(int id) throws NotFoundException { 521 synchronized (mAccessLock) { 522 TypedValue value = mTmpValue; 523 if (value == null) { 524 mTmpValue = value = new TypedValue(); 525 } 526 getValue(id, value, true); 527 if (value.type == TypedValue.TYPE_DIMENSION) { 528 return TypedValue.complexToDimension(value.data, mMetrics); 529 } 530 throw new NotFoundException( 531 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 532 + Integer.toHexString(value.type) + " is not valid"); 533 } 534 } 535 536 /** 537 * Retrieve a dimensional for a particular resource ID for use 538 * as an offset in raw pixels. This is the same as 539 * {@link #getDimension}, except the returned value is converted to 540 * integer pixels for you. An offset conversion involves simply 541 * truncating the base value to an integer. 542 * 543 * @param id The desired resource identifier, as generated by the aapt 544 * tool. This integer encodes the package, type, and resource 545 * entry. The value 0 is an invalid identifier. 546 * 547 * @return Resource dimension value multiplied by the appropriate 548 * metric and truncated to integer pixels. 549 * 550 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 551 * 552 * @see #getDimension 553 * @see #getDimensionPixelSize 554 */ 555 public int getDimensionPixelOffset(int id) throws NotFoundException { 556 synchronized (mAccessLock) { 557 TypedValue value = mTmpValue; 558 if (value == null) { 559 mTmpValue = value = new TypedValue(); 560 } 561 getValue(id, value, true); 562 if (value.type == TypedValue.TYPE_DIMENSION) { 563 return TypedValue.complexToDimensionPixelOffset( 564 value.data, mMetrics); 565 } 566 throw new NotFoundException( 567 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 568 + Integer.toHexString(value.type) + " is not valid"); 569 } 570 } 571 572 /** 573 * Retrieve a dimensional for a particular resource ID for use 574 * as a size in raw pixels. This is the same as 575 * {@link #getDimension}, except the returned value is converted to 576 * integer pixels for use as a size. A size conversion involves 577 * rounding the base value, and ensuring that a non-zero base value 578 * is at least one pixel in size. 579 * 580 * @param id The desired resource identifier, as generated by the aapt 581 * tool. This integer encodes the package, type, and resource 582 * entry. The value 0 is an invalid identifier. 583 * 584 * @return Resource dimension value multiplied by the appropriate 585 * metric and truncated to integer pixels. 586 * 587 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 588 * 589 * @see #getDimension 590 * @see #getDimensionPixelOffset 591 */ 592 public int getDimensionPixelSize(int id) throws NotFoundException { 593 synchronized (mAccessLock) { 594 TypedValue value = mTmpValue; 595 if (value == null) { 596 mTmpValue = value = new TypedValue(); 597 } 598 getValue(id, value, true); 599 if (value.type == TypedValue.TYPE_DIMENSION) { 600 return TypedValue.complexToDimensionPixelSize( 601 value.data, mMetrics); 602 } 603 throw new NotFoundException( 604 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 605 + Integer.toHexString(value.type) + " is not valid"); 606 } 607 } 608 609 /** 610 * Retrieve a fractional unit for a particular resource ID. 611 * 612 * @param id The desired resource identifier, as generated by the aapt 613 * tool. This integer encodes the package, type, and resource 614 * entry. The value 0 is an invalid identifier. 615 * @param base The base value of this fraction. In other words, a 616 * standard fraction is multiplied by this value. 617 * @param pbase The parent base value of this fraction. In other 618 * words, a parent fraction (nn%p) is multiplied by this 619 * value. 620 * 621 * @return Attribute fractional value multiplied by the appropriate 622 * base value. 623 * 624 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 625 */ 626 public float getFraction(int id, int base, int pbase) { 627 synchronized (mAccessLock) { 628 TypedValue value = mTmpValue; 629 if (value == null) { 630 mTmpValue = value = new TypedValue(); 631 } 632 getValue(id, value, true); 633 if (value.type == TypedValue.TYPE_FRACTION) { 634 return TypedValue.complexToFraction(value.data, base, pbase); 635 } 636 throw new NotFoundException( 637 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 638 + Integer.toHexString(value.type) + " is not valid"); 639 } 640 } 641 642 /** 643 * Return a drawable object associated with a particular resource ID. 644 * Various types of objects will be returned depending on the underlying 645 * resource -- for example, a solid color, PNG image, scalable image, etc. 646 * The Drawable API hides these implementation details. 647 * 648 * <p class="note"><strong>Note:</strong> Prior to 649 * {@link android.os.Build.VERSION_CODES#JELLY_BEAN}, this function 650 * would not correctly retrieve the final configuration density when 651 * the resource ID passed here is an alias to another Drawable resource. 652 * This means that if the density configuration of the alias resource 653 * is different than the actual resource, the density of the returned 654 * Drawable would be incorrect, resulting in bad scaling. To work 655 * around this, you can instead retrieve the Drawable through 656 * {@link TypedArray#getDrawable TypedArray.getDrawable}. Use 657 * {@link android.content.Context#obtainStyledAttributes(int[]) 658 * Context.obtainStyledAttributes} with 659 * an array containing the resource ID of interest to create the TypedArray.</p> 660 * 661 * @param id The desired resource identifier, as generated by the aapt 662 * tool. This integer encodes the package, type, and resource 663 * entry. The value 0 is an invalid identifier. 664 * 665 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 666 * 667 * @return Drawable An object that can be used to draw this resource. 668 */ 669 public Drawable getDrawable(int id) throws NotFoundException { 670 TypedValue value; 671 synchronized (mAccessLock) { 672 value = mTmpValue; 673 if (value == null) { 674 value = new TypedValue(); 675 } else { 676 mTmpValue = null; 677 } 678 getValue(id, value, true); 679 } 680 Drawable res = loadDrawable(value, id); 681 synchronized (mAccessLock) { 682 if (mTmpValue == null) { 683 mTmpValue = value; 684 } 685 } 686 return res; 687 } 688 689 /** 690 * Return a drawable object associated with a particular resource ID for the 691 * given screen density in DPI. This will set the drawable's density to be 692 * the device's density multiplied by the ratio of actual drawable density 693 * to requested density. This allows the drawable to be scaled up to the 694 * correct size if needed. Various types of objects will be returned 695 * depending on the underlying resource -- for example, a solid color, PNG 696 * image, scalable image, etc. The Drawable API hides these implementation 697 * details. 698 * 699 * @param id The desired resource identifier, as generated by the aapt tool. 700 * This integer encodes the package, type, and resource entry. 701 * The value 0 is an invalid identifier. 702 * @param density the desired screen density indicated by the resource as 703 * found in {@link DisplayMetrics}. 704 * @throws NotFoundException Throws NotFoundException if the given ID does 705 * not exist. 706 * @return Drawable An object that can be used to draw this resource. 707 */ 708 public Drawable getDrawableForDensity(int id, int density) throws NotFoundException { 709 TypedValue value; 710 synchronized (mAccessLock) { 711 value = mTmpValue; 712 if (value == null) { 713 value = new TypedValue(); 714 } else { 715 mTmpValue = null; 716 } 717 getValueForDensity(id, density, value, true); 718 719 /* 720 * Pretend the requested density is actually the display density. If 721 * the drawable returned is not the requested density, then force it 722 * to be scaled later by dividing its density by the ratio of 723 * requested density to actual device density. Drawables that have 724 * undefined density or no density don't need to be handled here. 725 */ 726 if (value.density > 0 && value.density != TypedValue.DENSITY_NONE) { 727 if (value.density == density) { 728 value.density = mMetrics.densityDpi; 729 } else { 730 value.density = (value.density * mMetrics.densityDpi) / density; 731 } 732 } 733 } 734 735 Drawable res = loadDrawable(value, id); 736 synchronized (mAccessLock) { 737 if (mTmpValue == null) { 738 mTmpValue = value; 739 } 740 } 741 return res; 742 } 743 744 /** 745 * Return a movie object associated with the particular resource ID. 746 * @param id The desired resource identifier, as generated by the aapt 747 * tool. This integer encodes the package, type, and resource 748 * entry. The value 0 is an invalid identifier. 749 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 750 * 751 */ 752 public Movie getMovie(int id) throws NotFoundException { 753 InputStream is = openRawResource(id); 754 Movie movie = Movie.decodeStream(is); 755 try { 756 is.close(); 757 } 758 catch (java.io.IOException e) { 759 // don't care, since the return value is valid 760 } 761 return movie; 762 } 763 764 /** 765 * Return a color integer associated with a particular resource ID. 766 * If the resource holds a complex 767 * {@link android.content.res.ColorStateList}, then the default color from 768 * the set is returned. 769 * 770 * @param id The desired resource identifier, as generated by the aapt 771 * tool. This integer encodes the package, type, and resource 772 * entry. The value 0 is an invalid identifier. 773 * 774 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 775 * 776 * @return Returns a single color value in the form 0xAARRGGBB. 777 */ 778 public int getColor(int id) throws NotFoundException { 779 TypedValue value; 780 synchronized (mAccessLock) { 781 value = mTmpValue; 782 if (value == null) { 783 value = new TypedValue(); 784 } 785 getValue(id, value, true); 786 if (value.type >= TypedValue.TYPE_FIRST_INT 787 && value.type <= TypedValue.TYPE_LAST_INT) { 788 mTmpValue = value; 789 return value.data; 790 } else if (value.type != TypedValue.TYPE_STRING) { 791 throw new NotFoundException( 792 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 793 + Integer.toHexString(value.type) + " is not valid"); 794 } 795 } 796 ColorStateList csl = loadColorStateList(value, id); 797 synchronized (mAccessLock) { 798 if (mTmpValue == null) { 799 mTmpValue = value; 800 } 801 } 802 return csl.getDefaultColor(); 803 } 804 805 /** 806 * Return a color state list associated with a particular resource ID. The 807 * resource may contain either a single raw color value, or a complex 808 * {@link android.content.res.ColorStateList} holding multiple possible colors. 809 * 810 * @param id The desired resource identifier of a {@link ColorStateList}, 811 * as generated by the aapt tool. This integer encodes the package, type, and resource 812 * entry. The value 0 is an invalid identifier. 813 * 814 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 815 * 816 * @return Returns a ColorStateList object containing either a single 817 * solid color or multiple colors that can be selected based on a state. 818 */ 819 public ColorStateList getColorStateList(int id) throws NotFoundException { 820 TypedValue value; 821 synchronized (mAccessLock) { 822 value = mTmpValue; 823 if (value == null) { 824 value = new TypedValue(); 825 } else { 826 mTmpValue = null; 827 } 828 getValue(id, value, true); 829 } 830 ColorStateList res = loadColorStateList(value, id); 831 synchronized (mAccessLock) { 832 if (mTmpValue == null) { 833 mTmpValue = value; 834 } 835 } 836 return res; 837 } 838 839 /** 840 * Return a boolean associated with a particular resource ID. This can be 841 * used with any integral resource value, and will return true if it is 842 * non-zero. 843 * 844 * @param id The desired resource identifier, as generated by the aapt 845 * tool. This integer encodes the package, type, and resource 846 * entry. The value 0 is an invalid identifier. 847 * 848 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 849 * 850 * @return Returns the boolean value contained in the resource. 851 */ 852 public boolean getBoolean(int id) throws NotFoundException { 853 synchronized (mAccessLock) { 854 TypedValue value = mTmpValue; 855 if (value == null) { 856 mTmpValue = value = new TypedValue(); 857 } 858 getValue(id, value, true); 859 if (value.type >= TypedValue.TYPE_FIRST_INT 860 && value.type <= TypedValue.TYPE_LAST_INT) { 861 return value.data != 0; 862 } 863 throw new NotFoundException( 864 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 865 + Integer.toHexString(value.type) + " is not valid"); 866 } 867 } 868 869 /** 870 * Return an integer associated with a particular resource ID. 871 * 872 * @param id The desired resource identifier, as generated by the aapt 873 * tool. This integer encodes the package, type, and resource 874 * entry. The value 0 is an invalid identifier. 875 * 876 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 877 * 878 * @return Returns the integer value contained in the resource. 879 */ 880 public int getInteger(int id) throws NotFoundException { 881 synchronized (mAccessLock) { 882 TypedValue value = mTmpValue; 883 if (value == null) { 884 mTmpValue = value = new TypedValue(); 885 } 886 getValue(id, value, true); 887 if (value.type >= TypedValue.TYPE_FIRST_INT 888 && value.type <= TypedValue.TYPE_LAST_INT) { 889 return value.data; 890 } 891 throw new NotFoundException( 892 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 893 + Integer.toHexString(value.type) + " is not valid"); 894 } 895 } 896 897 /** 898 * Return an XmlResourceParser through which you can read a view layout 899 * description for the given resource ID. This parser has limited 900 * functionality -- in particular, you can't change its input, and only 901 * the high-level events are available. 902 * 903 * <p>This function is really a simple wrapper for calling 904 * {@link #getXml} with a layout resource. 905 * 906 * @param id The desired resource identifier, as generated by the aapt 907 * tool. This integer encodes the package, type, and resource 908 * entry. The value 0 is an invalid identifier. 909 * 910 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 911 * 912 * @return A new parser object through which you can read 913 * the XML data. 914 * 915 * @see #getXml 916 */ 917 public XmlResourceParser getLayout(int id) throws NotFoundException { 918 return loadXmlResourceParser(id, "layout"); 919 } 920 921 /** 922 * Return an XmlResourceParser through which you can read an animation 923 * description for the given resource ID. This parser has limited 924 * functionality -- in particular, you can't change its input, and only 925 * the high-level events are available. 926 * 927 * <p>This function is really a simple wrapper for calling 928 * {@link #getXml} with an animation resource. 929 * 930 * @param id The desired resource identifier, as generated by the aapt 931 * tool. This integer encodes the package, type, and resource 932 * entry. The value 0 is an invalid identifier. 933 * 934 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 935 * 936 * @return A new parser object through which you can read 937 * the XML data. 938 * 939 * @see #getXml 940 */ 941 public XmlResourceParser getAnimation(int id) throws NotFoundException { 942 return loadXmlResourceParser(id, "anim"); 943 } 944 945 /** 946 * Return an XmlResourceParser through which you can read a generic XML 947 * resource for the given resource ID. 948 * 949 * <p>The XmlPullParser implementation returned here has some limited 950 * functionality. In particular, you can't change its input, and only 951 * high-level parsing events are available (since the document was 952 * pre-parsed for you at build time, which involved merging text and 953 * stripping comments). 954 * 955 * @param id The desired resource identifier, as generated by the aapt 956 * tool. This integer encodes the package, type, and resource 957 * entry. The value 0 is an invalid identifier. 958 * 959 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 960 * 961 * @return A new parser object through which you can read 962 * the XML data. 963 * 964 * @see android.util.AttributeSet 965 */ 966 public XmlResourceParser getXml(int id) throws NotFoundException { 967 return loadXmlResourceParser(id, "xml"); 968 } 969 970 /** 971 * Open a data stream for reading a raw resource. This can only be used 972 * with resources whose value is the name of an asset files -- that is, it can be 973 * used to open drawable, sound, and raw resources; it will fail on string 974 * and color resources. 975 * 976 * @param id The resource identifier to open, as generated by the appt 977 * tool. 978 * 979 * @return InputStream Access to the resource data. 980 * 981 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 982 * 983 */ 984 public InputStream openRawResource(int id) throws NotFoundException { 985 TypedValue value; 986 synchronized (mAccessLock) { 987 value = mTmpValue; 988 if (value == null) { 989 value = new TypedValue(); 990 } else { 991 mTmpValue = null; 992 } 993 } 994 InputStream res = openRawResource(id, value); 995 synchronized (mAccessLock) { 996 if (mTmpValue == null) { 997 mTmpValue = value; 998 } 999 } 1000 return res; 1001 } 1002 1003 /** 1004 * Open a data stream for reading a raw resource. This can only be used 1005 * with resources whose value is the name of an asset file -- that is, it can be 1006 * used to open drawable, sound, and raw resources; it will fail on string 1007 * and color resources. 1008 * 1009 * @param id The resource identifier to open, as generated by the appt tool. 1010 * @param value The TypedValue object to hold the resource information. 1011 * 1012 * @return InputStream Access to the resource data. 1013 * 1014 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1015 */ 1016 public InputStream openRawResource(int id, TypedValue value) throws NotFoundException { 1017 getValue(id, value, true); 1018 1019 try { 1020 return mAssets.openNonAsset(value.assetCookie, value.string.toString(), 1021 AssetManager.ACCESS_STREAMING); 1022 } catch (Exception e) { 1023 NotFoundException rnf = new NotFoundException("File " + value.string.toString() + 1024 " from drawable resource ID #0x" + Integer.toHexString(id)); 1025 rnf.initCause(e); 1026 throw rnf; 1027 } 1028 } 1029 1030 /** 1031 * Open a file descriptor for reading a raw resource. This can only be used 1032 * with resources whose value is the name of an asset files -- that is, it can be 1033 * used to open drawable, sound, and raw resources; it will fail on string 1034 * and color resources. 1035 * 1036 * <p>This function only works for resources that are stored in the package 1037 * as uncompressed data, which typically includes things like mp3 files 1038 * and png images. 1039 * 1040 * @param id The resource identifier to open, as generated by the appt 1041 * tool. 1042 * 1043 * @return AssetFileDescriptor A new file descriptor you can use to read 1044 * the resource. This includes the file descriptor itself, as well as the 1045 * offset and length of data where the resource appears in the file. A 1046 * null is returned if the file exists but is compressed. 1047 * 1048 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1049 * 1050 */ 1051 public AssetFileDescriptor openRawResourceFd(int id) throws NotFoundException { 1052 TypedValue value; 1053 synchronized (mAccessLock) { 1054 value = mTmpValue; 1055 if (value == null) { 1056 value = new TypedValue(); 1057 } else { 1058 mTmpValue = null; 1059 } 1060 getValue(id, value, true); 1061 } 1062 try { 1063 return mAssets.openNonAssetFd( 1064 value.assetCookie, value.string.toString()); 1065 } catch (Exception e) { 1066 NotFoundException rnf = new NotFoundException( 1067 "File " + value.string.toString() 1068 + " from drawable resource ID #0x" 1069 + Integer.toHexString(id)); 1070 rnf.initCause(e); 1071 throw rnf; 1072 } finally { 1073 synchronized (mAccessLock) { 1074 if (mTmpValue == null) { 1075 mTmpValue = value; 1076 } 1077 } 1078 } 1079 } 1080 1081 /** 1082 * Return the raw data associated with a particular resource ID. 1083 * 1084 * @param id The desired resource identifier, as generated by the aapt 1085 * tool. This integer encodes the package, type, and resource 1086 * entry. The value 0 is an invalid identifier. 1087 * @param outValue Object in which to place the resource data. 1088 * @param resolveRefs If true, a resource that is a reference to another 1089 * resource will be followed so that you receive the 1090 * actual final resource data. If false, the TypedValue 1091 * will be filled in with the reference itself. 1092 * 1093 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1094 * 1095 */ 1096 public void getValue(int id, TypedValue outValue, boolean resolveRefs) 1097 throws NotFoundException { 1098 boolean found = mAssets.getResourceValue(id, 0, outValue, resolveRefs); 1099 if (found) { 1100 return; 1101 } 1102 throw new NotFoundException("Resource ID #0x" 1103 + Integer.toHexString(id)); 1104 } 1105 1106 /** 1107 * Get the raw value associated with a resource with associated density. 1108 * 1109 * @param id resource identifier 1110 * @param density density in DPI 1111 * @param resolveRefs If true, a resource that is a reference to another 1112 * resource will be followed so that you receive the actual final 1113 * resource data. If false, the TypedValue will be filled in with 1114 * the reference itself. 1115 * @throws NotFoundException Throws NotFoundException if the given ID does 1116 * not exist. 1117 * @see #getValue(String, TypedValue, boolean) 1118 */ 1119 public void getValueForDensity(int id, int density, TypedValue outValue, boolean resolveRefs) 1120 throws NotFoundException { 1121 boolean found = mAssets.getResourceValue(id, density, outValue, resolveRefs); 1122 if (found) { 1123 return; 1124 } 1125 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id)); 1126 } 1127 1128 /** 1129 * Return the raw data associated with a particular resource ID. 1130 * See getIdentifier() for information on how names are mapped to resource 1131 * IDs, and getString(int) for information on how string resources are 1132 * retrieved. 1133 * 1134 * <p>Note: use of this function is discouraged. It is much more 1135 * efficient to retrieve resources by identifier than by name. 1136 * 1137 * @param name The name of the desired resource. This is passed to 1138 * getIdentifier() with a default type of "string". 1139 * @param outValue Object in which to place the resource data. 1140 * @param resolveRefs If true, a resource that is a reference to another 1141 * resource will be followed so that you receive the 1142 * actual final resource data. If false, the TypedValue 1143 * will be filled in with the reference itself. 1144 * 1145 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1146 * 1147 */ 1148 public void getValue(String name, TypedValue outValue, boolean resolveRefs) 1149 throws NotFoundException { 1150 int id = getIdentifier(name, "string", null); 1151 if (id != 0) { 1152 getValue(id, outValue, resolveRefs); 1153 return; 1154 } 1155 throw new NotFoundException("String resource name " + name); 1156 } 1157 1158 /** 1159 * This class holds the current attribute values for a particular theme. 1160 * In other words, a Theme is a set of values for resource attributes; 1161 * these are used in conjunction with {@link TypedArray} 1162 * to resolve the final value for an attribute. 1163 * 1164 * <p>The Theme's attributes come into play in two ways: (1) a styled 1165 * attribute can explicit reference a value in the theme through the 1166 * "?themeAttribute" syntax; (2) if no value has been defined for a 1167 * particular styled attribute, as a last resort we will try to find that 1168 * attribute's value in the Theme. 1169 * 1170 * <p>You will normally use the {@link #obtainStyledAttributes} APIs to 1171 * retrieve XML attributes with style and theme information applied. 1172 */ 1173 public final class Theme { 1174 /** 1175 * Place new attribute values into the theme. The style resource 1176 * specified by <var>resid</var> will be retrieved from this Theme's 1177 * resources, its values placed into the Theme object. 1178 * 1179 * <p>The semantics of this function depends on the <var>force</var> 1180 * argument: If false, only values that are not already defined in 1181 * the theme will be copied from the system resource; otherwise, if 1182 * any of the style's attributes are already defined in the theme, the 1183 * current values in the theme will be overwritten. 1184 * 1185 * @param resid The resource ID of a style resource from which to 1186 * obtain attribute values. 1187 * @param force If true, values in the style resource will always be 1188 * used in the theme; otherwise, they will only be used 1189 * if not already defined in the theme. 1190 */ 1191 public void applyStyle(int resid, boolean force) { 1192 AssetManager.applyThemeStyle(mTheme, resid, force); 1193 } 1194 1195 /** 1196 * Set this theme to hold the same contents as the theme 1197 * <var>other</var>. If both of these themes are from the same 1198 * Resources object, they will be identical after this function 1199 * returns. If they are from different Resources, only the resources 1200 * they have in common will be set in this theme. 1201 * 1202 * @param other The existing Theme to copy from. 1203 */ 1204 public void setTo(Theme other) { 1205 AssetManager.copyTheme(mTheme, other.mTheme); 1206 } 1207 1208 /** 1209 * Return a TypedArray holding the values defined by 1210 * <var>Theme</var> which are listed in <var>attrs</var>. 1211 * 1212 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1213 * with the array. 1214 * 1215 * @param attrs The desired attributes. 1216 * 1217 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1218 * 1219 * @return Returns a TypedArray holding an array of the attribute values. 1220 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1221 * when done with it. 1222 * 1223 * @see Resources#obtainAttributes 1224 * @see #obtainStyledAttributes(int, int[]) 1225 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1226 */ 1227 public TypedArray obtainStyledAttributes(int[] attrs) { 1228 int len = attrs.length; 1229 TypedArray array = getCachedStyledAttributes(len); 1230 array.mRsrcs = attrs; 1231 AssetManager.applyStyle(mTheme, 0, 0, 0, attrs, 1232 array.mData, array.mIndices); 1233 return array; 1234 } 1235 1236 /** 1237 * Return a TypedArray holding the values defined by the style 1238 * resource <var>resid</var> which are listed in <var>attrs</var>. 1239 * 1240 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1241 * with the array. 1242 * 1243 * @param resid The desired style resource. 1244 * @param attrs The desired attributes in the style. 1245 * 1246 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1247 * 1248 * @return Returns a TypedArray holding an array of the attribute values. 1249 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1250 * when done with it. 1251 * 1252 * @see Resources#obtainAttributes 1253 * @see #obtainStyledAttributes(int[]) 1254 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1255 */ 1256 public TypedArray obtainStyledAttributes(int resid, int[] attrs) 1257 throws NotFoundException { 1258 int len = attrs.length; 1259 TypedArray array = getCachedStyledAttributes(len); 1260 array.mRsrcs = attrs; 1261 1262 AssetManager.applyStyle(mTheme, 0, resid, 0, attrs, 1263 array.mData, array.mIndices); 1264 if (false) { 1265 int[] data = array.mData; 1266 1267 System.out.println("**********************************************************"); 1268 System.out.println("**********************************************************"); 1269 System.out.println("**********************************************************"); 1270 System.out.println("Attributes:"); 1271 String s = " Attrs:"; 1272 int i; 1273 for (i=0; i<attrs.length; i++) { 1274 s = s + " 0x" + Integer.toHexString(attrs[i]); 1275 } 1276 System.out.println(s); 1277 s = " Found:"; 1278 TypedValue value = new TypedValue(); 1279 for (i=0; i<attrs.length; i++) { 1280 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1281 value.type = data[d+AssetManager.STYLE_TYPE]; 1282 value.data = data[d+AssetManager.STYLE_DATA]; 1283 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1284 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1285 s = s + " 0x" + Integer.toHexString(attrs[i]) 1286 + "=" + value; 1287 } 1288 System.out.println(s); 1289 } 1290 return array; 1291 } 1292 1293 /** 1294 * Return a TypedArray holding the attribute values in 1295 * <var>set</var> 1296 * that are listed in <var>attrs</var>. In addition, if the given 1297 * AttributeSet specifies a style class (through the "style" attribute), 1298 * that style will be applied on top of the base attributes it defines. 1299 * 1300 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1301 * with the array. 1302 * 1303 * <p>When determining the final value of a particular attribute, there 1304 * are four inputs that come into play:</p> 1305 * 1306 * <ol> 1307 * <li> Any attribute values in the given AttributeSet. 1308 * <li> The style resource specified in the AttributeSet (named 1309 * "style"). 1310 * <li> The default style specified by <var>defStyleAttr</var> and 1311 * <var>defStyleRes</var> 1312 * <li> The base values in this theme. 1313 * </ol> 1314 * 1315 * <p>Each of these inputs is considered in-order, with the first listed 1316 * taking precedence over the following ones. In other words, if in the 1317 * AttributeSet you have supplied <code><Button 1318 * textColor="#ff000000"></code>, then the button's text will 1319 * <em>always</em> be black, regardless of what is specified in any of 1320 * the styles. 1321 * 1322 * @param set The base set of attribute values. May be null. 1323 * @param attrs The desired attributes to be retrieved. 1324 * @param defStyleAttr An attribute in the current theme that contains a 1325 * reference to a style resource that supplies 1326 * defaults values for the TypedArray. Can be 1327 * 0 to not look for defaults. 1328 * @param defStyleRes A resource identifier of a style resource that 1329 * supplies default values for the TypedArray, 1330 * used only if defStyleAttr is 0 or can not be found 1331 * in the theme. Can be 0 to not look for defaults. 1332 * 1333 * @return Returns a TypedArray holding an array of the attribute values. 1334 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1335 * when done with it. 1336 * 1337 * @see Resources#obtainAttributes 1338 * @see #obtainStyledAttributes(int[]) 1339 * @see #obtainStyledAttributes(int, int[]) 1340 */ 1341 public TypedArray obtainStyledAttributes(AttributeSet set, 1342 int[] attrs, int defStyleAttr, int defStyleRes) { 1343 int len = attrs.length; 1344 TypedArray array = getCachedStyledAttributes(len); 1345 1346 // XXX note that for now we only work with compiled XML files. 1347 // To support generic XML files we will need to manually parse 1348 // out the attributes from the XML file (applying type information 1349 // contained in the resources and such). 1350 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1351 AssetManager.applyStyle( 1352 mTheme, defStyleAttr, defStyleRes, 1353 parser != null ? parser.mParseState : 0, attrs, 1354 array.mData, array.mIndices); 1355 1356 array.mRsrcs = attrs; 1357 array.mXml = parser; 1358 1359 if (false) { 1360 int[] data = array.mData; 1361 1362 System.out.println("Attributes:"); 1363 String s = " Attrs:"; 1364 int i; 1365 for (i=0; i<set.getAttributeCount(); i++) { 1366 s = s + " " + set.getAttributeName(i); 1367 int id = set.getAttributeNameResource(i); 1368 if (id != 0) { 1369 s = s + "(0x" + Integer.toHexString(id) + ")"; 1370 } 1371 s = s + "=" + set.getAttributeValue(i); 1372 } 1373 System.out.println(s); 1374 s = " Found:"; 1375 TypedValue value = new TypedValue(); 1376 for (i=0; i<attrs.length; i++) { 1377 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1378 value.type = data[d+AssetManager.STYLE_TYPE]; 1379 value.data = data[d+AssetManager.STYLE_DATA]; 1380 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1381 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1382 s = s + " 0x" + Integer.toHexString(attrs[i]) 1383 + "=" + value; 1384 } 1385 System.out.println(s); 1386 } 1387 1388 return array; 1389 } 1390 1391 /** 1392 * Retrieve the value of an attribute in the Theme. The contents of 1393 * <var>outValue</var> are ultimately filled in by 1394 * {@link Resources#getValue}. 1395 * 1396 * @param resid The resource identifier of the desired theme 1397 * attribute. 1398 * @param outValue Filled in with the ultimate resource value supplied 1399 * by the attribute. 1400 * @param resolveRefs If true, resource references will be walked; if 1401 * false, <var>outValue</var> may be a 1402 * TYPE_REFERENCE. In either case, it will never 1403 * be a TYPE_ATTRIBUTE. 1404 * 1405 * @return boolean Returns true if the attribute was found and 1406 * <var>outValue</var> is valid, else false. 1407 */ 1408 public boolean resolveAttribute(int resid, TypedValue outValue, 1409 boolean resolveRefs) { 1410 boolean got = mAssets.getThemeValue(mTheme, resid, outValue, resolveRefs); 1411 if (false) { 1412 System.out.println( 1413 "resolveAttribute #" + Integer.toHexString(resid) 1414 + " got=" + got + ", type=0x" + Integer.toHexString(outValue.type) 1415 + ", data=0x" + Integer.toHexString(outValue.data)); 1416 } 1417 return got; 1418 } 1419 1420 /** 1421 * Print contents of this theme out to the log. For debugging only. 1422 * 1423 * @param priority The log priority to use. 1424 * @param tag The log tag to use. 1425 * @param prefix Text to prefix each line printed. 1426 */ 1427 public void dump(int priority, String tag, String prefix) { 1428 AssetManager.dumpTheme(mTheme, priority, tag, prefix); 1429 } 1430 1431 protected void finalize() throws Throwable { 1432 super.finalize(); 1433 mAssets.releaseTheme(mTheme); 1434 } 1435 1436 /*package*/ Theme() { 1437 mAssets = Resources.this.mAssets; 1438 mTheme = mAssets.createTheme(); 1439 } 1440 1441 private final AssetManager mAssets; 1442 private final int mTheme; 1443 } 1444 1445 /** 1446 * Generate a new Theme object for this set of Resources. It initially 1447 * starts out empty. 1448 * 1449 * @return Theme The newly created Theme container. 1450 */ 1451 public final Theme newTheme() { 1452 return new Theme(); 1453 } 1454 1455 /** 1456 * Retrieve a set of basic attribute values from an AttributeSet, not 1457 * performing styling of them using a theme and/or style resources. 1458 * 1459 * @param set The current attribute values to retrieve. 1460 * @param attrs The specific attributes to be retrieved. 1461 * @return Returns a TypedArray holding an array of the attribute values. 1462 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1463 * when done with it. 1464 * 1465 * @see Theme#obtainStyledAttributes(AttributeSet, int[], int, int) 1466 */ 1467 public TypedArray obtainAttributes(AttributeSet set, int[] attrs) { 1468 int len = attrs.length; 1469 TypedArray array = getCachedStyledAttributes(len); 1470 1471 // XXX note that for now we only work with compiled XML files. 1472 // To support generic XML files we will need to manually parse 1473 // out the attributes from the XML file (applying type information 1474 // contained in the resources and such). 1475 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1476 mAssets.retrieveAttributes(parser.mParseState, attrs, 1477 array.mData, array.mIndices); 1478 1479 array.mRsrcs = attrs; 1480 array.mXml = parser; 1481 1482 return array; 1483 } 1484 1485 /** 1486 * Store the newly updated configuration. 1487 */ 1488 public void updateConfiguration(Configuration config, 1489 DisplayMetrics metrics) { 1490 updateConfiguration(config, metrics, null); 1491 } 1492 1493 /** 1494 * @hide 1495 */ 1496 public void updateConfiguration(Configuration config, 1497 DisplayMetrics metrics, CompatibilityInfo compat) { 1498 synchronized (mAccessLock) { 1499 if (false) { 1500 Slog.i(TAG, "**** Updating config of " + this + ": old config is " 1501 + mConfiguration + " old compat is " + mCompatibilityInfo); 1502 Slog.i(TAG, "**** Updating config of " + this + ": new config is " 1503 + config + " new compat is " + compat); 1504 } 1505 if (compat != null) { 1506 mCompatibilityInfo = compat; 1507 } 1508 if (metrics != null) { 1509 mMetrics.setTo(metrics); 1510 } 1511 // NOTE: We should re-arrange this code to create a Display 1512 // with the CompatibilityInfo that is used everywhere we deal 1513 // with the display in relation to this app, rather than 1514 // doing the conversion here. This impl should be okay because 1515 // we make sure to return a compatible display in the places 1516 // where there are public APIs to retrieve the display... but 1517 // it would be cleaner and more maintainble to just be 1518 // consistently dealing with a compatible display everywhere in 1519 // the framework. 1520 if (mCompatibilityInfo != null) { 1521 mCompatibilityInfo.applyToDisplayMetrics(mMetrics); 1522 } 1523 int configChanges = 0xfffffff; 1524 if (config != null) { 1525 mTmpConfig.setTo(config); 1526 int density = config.densityDpi; 1527 if (density == Configuration.DENSITY_DPI_UNDEFINED) { 1528 density = mMetrics.noncompatDensityDpi; 1529 } 1530 if (mCompatibilityInfo != null) { 1531 mCompatibilityInfo.applyToConfiguration(density, mTmpConfig); 1532 } 1533 if (mTmpConfig.locale == null) { 1534 mTmpConfig.locale = Locale.getDefault(); 1535 mTmpConfig.setLayoutDirection(mTmpConfig.locale); 1536 } 1537 configChanges = mConfiguration.updateFrom(mTmpConfig); 1538 configChanges = ActivityInfo.activityInfoConfigToNative(configChanges); 1539 } 1540 if (mConfiguration.locale == null) { 1541 mConfiguration.locale = Locale.getDefault(); 1542 mConfiguration.setLayoutDirection(mConfiguration.locale); 1543 } 1544 if (mConfiguration.densityDpi != Configuration.DENSITY_DPI_UNDEFINED) { 1545 mMetrics.densityDpi = mConfiguration.densityDpi; 1546 mMetrics.density = mConfiguration.densityDpi * DisplayMetrics.DENSITY_DEFAULT_SCALE; 1547 } 1548 mMetrics.scaledDensity = mMetrics.density * mConfiguration.fontScale; 1549 1550 String locale = null; 1551 if (mConfiguration.locale != null) { 1552 locale = mConfiguration.locale.getLanguage(); 1553 if (mConfiguration.locale.getCountry() != null) { 1554 locale += "-" + mConfiguration.locale.getCountry(); 1555 } 1556 } 1557 int width, height; 1558 if (mMetrics.widthPixels >= mMetrics.heightPixels) { 1559 width = mMetrics.widthPixels; 1560 height = mMetrics.heightPixels; 1561 } else { 1562 //noinspection SuspiciousNameCombination 1563 width = mMetrics.heightPixels; 1564 //noinspection SuspiciousNameCombination 1565 height = mMetrics.widthPixels; 1566 } 1567 int keyboardHidden = mConfiguration.keyboardHidden; 1568 if (keyboardHidden == Configuration.KEYBOARDHIDDEN_NO 1569 && mConfiguration.hardKeyboardHidden 1570 == Configuration.HARDKEYBOARDHIDDEN_YES) { 1571 keyboardHidden = Configuration.KEYBOARDHIDDEN_SOFT; 1572 } 1573 mAssets.setConfiguration(mConfiguration.mcc, mConfiguration.mnc, 1574 locale, mConfiguration.orientation, 1575 mConfiguration.touchscreen, 1576 mConfiguration.densityDpi, mConfiguration.keyboard, 1577 keyboardHidden, mConfiguration.navigation, width, height, 1578 mConfiguration.smallestScreenWidthDp, 1579 mConfiguration.screenWidthDp, mConfiguration.screenHeightDp, 1580 mConfiguration.screenLayout, mConfiguration.uiMode, 1581 Build.VERSION.RESOURCES_SDK_INT); 1582 1583 if (DEBUG_CONFIG) { 1584 Slog.i(TAG, "**** Updating config of " + this + ": final config is " + mConfiguration 1585 + " final compat is " + mCompatibilityInfo); 1586 } 1587 1588 clearDrawableCacheLocked(mDrawableCache, configChanges); 1589 clearDrawableCacheLocked(mColorDrawableCache, configChanges); 1590 1591 mColorStateListCache.clear(); 1592 1593 flushLayoutCache(); 1594 } 1595 synchronized (sSync) { 1596 if (mPluralRule != null) { 1597 mPluralRule = NativePluralRules.forLocale(config.locale); 1598 } 1599 } 1600 } 1601 1602 private void clearDrawableCacheLocked( 1603 LongSparseArray<WeakReference<ConstantState>> cache, 1604 int configChanges) { 1605 int N = cache.size(); 1606 if (DEBUG_CONFIG) { 1607 Log.d(TAG, "Cleaning up drawables config changes: 0x" 1608 + Integer.toHexString(configChanges)); 1609 } 1610 for (int i=0; i<N; i++) { 1611 WeakReference<Drawable.ConstantState> ref = cache.valueAt(i); 1612 if (ref != null) { 1613 Drawable.ConstantState cs = ref.get(); 1614 if (cs != null) { 1615 if (Configuration.needNewResources( 1616 configChanges, cs.getChangingConfigurations())) { 1617 if (DEBUG_CONFIG) { 1618 Log.d(TAG, "FLUSHING #0x" 1619 + Long.toHexString(mDrawableCache.keyAt(i)) 1620 + " / " + cs + " with changes: 0x" 1621 + Integer.toHexString(cs.getChangingConfigurations())); 1622 } 1623 cache.setValueAt(i, null); 1624 } else if (DEBUG_CONFIG) { 1625 Log.d(TAG, "(Keeping #0x" 1626 + Long.toHexString(cache.keyAt(i)) 1627 + " / " + cs + " with changes: 0x" 1628 + Integer.toHexString(cs.getChangingConfigurations()) 1629 + ")"); 1630 } 1631 } 1632 } 1633 } 1634 } 1635 1636 /** 1637 * Update the system resources configuration if they have previously 1638 * been initialized. 1639 * 1640 * @hide 1641 */ 1642 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics, 1643 CompatibilityInfo compat) { 1644 if (mSystem != null) { 1645 mSystem.updateConfiguration(config, metrics, compat); 1646 //Log.i(TAG, "Updated system resources " + mSystem 1647 // + ": " + mSystem.getConfiguration()); 1648 } 1649 } 1650 1651 /** 1652 * @hide 1653 */ 1654 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics) { 1655 updateSystemConfiguration(config, metrics, null); 1656 } 1657 1658 /** 1659 * Return the current display metrics that are in effect for this resource 1660 * object. The returned object should be treated as read-only. 1661 * 1662 * @return The resource's current display metrics. 1663 */ 1664 public DisplayMetrics getDisplayMetrics() { 1665 if (DEBUG_CONFIG) Slog.v(TAG, "Returning DisplayMetrics: " + mMetrics.widthPixels 1666 + "x" + mMetrics.heightPixels + " " + mMetrics.density); 1667 return mMetrics; 1668 } 1669 1670 /** 1671 * Return the current configuration that is in effect for this resource 1672 * object. The returned object should be treated as read-only. 1673 * 1674 * @return The resource's current configuration. 1675 */ 1676 public Configuration getConfiguration() { 1677 return mConfiguration; 1678 } 1679 1680 /** 1681 * Return the compatibility mode information for the application. 1682 * The returned object should be treated as read-only. 1683 * 1684 * @return compatibility info. 1685 * @hide 1686 */ 1687 public CompatibilityInfo getCompatibilityInfo() { 1688 return mCompatibilityInfo != null ? mCompatibilityInfo 1689 : CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 1690 } 1691 1692 /** 1693 * This is just for testing. 1694 * @hide 1695 */ 1696 public void setCompatibilityInfo(CompatibilityInfo ci) { 1697 mCompatibilityInfo = ci; 1698 updateConfiguration(mConfiguration, mMetrics); 1699 } 1700 1701 /** 1702 * Return a resource identifier for the given resource name. A fully 1703 * qualified resource name is of the form "package:type/entry". The first 1704 * two components (package and type) are optional if defType and 1705 * defPackage, respectively, are specified here. 1706 * 1707 * <p>Note: use of this function is discouraged. It is much more 1708 * efficient to retrieve resources by identifier than by name. 1709 * 1710 * @param name The name of the desired resource. 1711 * @param defType Optional default resource type to find, if "type/" is 1712 * not included in the name. Can be null to require an 1713 * explicit type. 1714 * @param defPackage Optional default package to find, if "package:" is 1715 * not included in the name. Can be null to require an 1716 * explicit package. 1717 * 1718 * @return int The associated resource identifier. Returns 0 if no such 1719 * resource was found. (0 is not a valid resource ID.) 1720 */ 1721 public int getIdentifier(String name, String defType, String defPackage) { 1722 if (name == null) { 1723 throw new NullPointerException("name is null"); 1724 } 1725 try { 1726 return Integer.parseInt(name); 1727 } catch (Exception e) { 1728 // Ignore 1729 } 1730 return mAssets.getResourceIdentifier(name, defType, defPackage); 1731 } 1732 1733 /** 1734 * Return the full name for a given resource identifier. This name is 1735 * a single string of the form "package:type/entry". 1736 * 1737 * @param resid The resource identifier whose name is to be retrieved. 1738 * 1739 * @return A string holding the name of the resource. 1740 * 1741 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1742 * 1743 * @see #getResourcePackageName 1744 * @see #getResourceTypeName 1745 * @see #getResourceEntryName 1746 */ 1747 public String getResourceName(int resid) throws NotFoundException { 1748 String str = mAssets.getResourceName(resid); 1749 if (str != null) return str; 1750 throw new NotFoundException("Unable to find resource ID #0x" 1751 + Integer.toHexString(resid)); 1752 } 1753 1754 /** 1755 * Return the package name for a given resource identifier. 1756 * 1757 * @param resid The resource identifier whose package name is to be 1758 * retrieved. 1759 * 1760 * @return A string holding the package name of the resource. 1761 * 1762 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1763 * 1764 * @see #getResourceName 1765 */ 1766 public String getResourcePackageName(int resid) throws NotFoundException { 1767 String str = mAssets.getResourcePackageName(resid); 1768 if (str != null) return str; 1769 throw new NotFoundException("Unable to find resource ID #0x" 1770 + Integer.toHexString(resid)); 1771 } 1772 1773 /** 1774 * Return the type name for a given resource identifier. 1775 * 1776 * @param resid The resource identifier whose type name is to be 1777 * retrieved. 1778 * 1779 * @return A string holding the type name of the resource. 1780 * 1781 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1782 * 1783 * @see #getResourceName 1784 */ 1785 public String getResourceTypeName(int resid) throws NotFoundException { 1786 String str = mAssets.getResourceTypeName(resid); 1787 if (str != null) return str; 1788 throw new NotFoundException("Unable to find resource ID #0x" 1789 + Integer.toHexString(resid)); 1790 } 1791 1792 /** 1793 * Return the entry name for a given resource identifier. 1794 * 1795 * @param resid The resource identifier whose entry name is to be 1796 * retrieved. 1797 * 1798 * @return A string holding the entry name of the resource. 1799 * 1800 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1801 * 1802 * @see #getResourceName 1803 */ 1804 public String getResourceEntryName(int resid) throws NotFoundException { 1805 String str = mAssets.getResourceEntryName(resid); 1806 if (str != null) return str; 1807 throw new NotFoundException("Unable to find resource ID #0x" 1808 + Integer.toHexString(resid)); 1809 } 1810 1811 /** 1812 * Parse a series of {@link android.R.styleable#Extra <extra>} tags from 1813 * an XML file. You call this when you are at the parent tag of the 1814 * extra tags, and it will return once all of the child tags have been parsed. 1815 * This will call {@link #parseBundleExtra} for each extra tag encountered. 1816 * 1817 * @param parser The parser from which to retrieve the extras. 1818 * @param outBundle A Bundle in which to place all parsed extras. 1819 * @throws XmlPullParserException 1820 * @throws IOException 1821 */ 1822 public void parseBundleExtras(XmlResourceParser parser, Bundle outBundle) 1823 throws XmlPullParserException, IOException { 1824 int outerDepth = parser.getDepth(); 1825 int type; 1826 while ((type=parser.next()) != XmlPullParser.END_DOCUMENT 1827 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 1828 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 1829 continue; 1830 } 1831 1832 String nodeName = parser.getName(); 1833 if (nodeName.equals("extra")) { 1834 parseBundleExtra("extra", parser, outBundle); 1835 XmlUtils.skipCurrentTag(parser); 1836 1837 } else { 1838 XmlUtils.skipCurrentTag(parser); 1839 } 1840 } 1841 } 1842 1843 /** 1844 * Parse a name/value pair out of an XML tag holding that data. The 1845 * AttributeSet must be holding the data defined by 1846 * {@link android.R.styleable#Extra}. The following value types are supported: 1847 * <ul> 1848 * <li> {@link TypedValue#TYPE_STRING}: 1849 * {@link Bundle#putCharSequence Bundle.putCharSequence()} 1850 * <li> {@link TypedValue#TYPE_INT_BOOLEAN}: 1851 * {@link Bundle#putCharSequence Bundle.putBoolean()} 1852 * <li> {@link TypedValue#TYPE_FIRST_INT}-{@link TypedValue#TYPE_LAST_INT}: 1853 * {@link Bundle#putCharSequence Bundle.putBoolean()} 1854 * <li> {@link TypedValue#TYPE_FLOAT}: 1855 * {@link Bundle#putCharSequence Bundle.putFloat()} 1856 * </ul> 1857 * 1858 * @param tagName The name of the tag these attributes come from; this is 1859 * only used for reporting error messages. 1860 * @param attrs The attributes from which to retrieve the name/value pair. 1861 * @param outBundle The Bundle in which to place the parsed value. 1862 * @throws XmlPullParserException If the attributes are not valid. 1863 */ 1864 public void parseBundleExtra(String tagName, AttributeSet attrs, 1865 Bundle outBundle) throws XmlPullParserException { 1866 TypedArray sa = obtainAttributes(attrs, 1867 com.android.internal.R.styleable.Extra); 1868 1869 String name = sa.getString( 1870 com.android.internal.R.styleable.Extra_name); 1871 if (name == null) { 1872 sa.recycle(); 1873 throw new XmlPullParserException("<" + tagName 1874 + "> requires an android:name attribute at " 1875 + attrs.getPositionDescription()); 1876 } 1877 1878 TypedValue v = sa.peekValue( 1879 com.android.internal.R.styleable.Extra_value); 1880 if (v != null) { 1881 if (v.type == TypedValue.TYPE_STRING) { 1882 CharSequence cs = v.coerceToString(); 1883 outBundle.putCharSequence(name, cs); 1884 } else if (v.type == TypedValue.TYPE_INT_BOOLEAN) { 1885 outBundle.putBoolean(name, v.data != 0); 1886 } else if (v.type >= TypedValue.TYPE_FIRST_INT 1887 && v.type <= TypedValue.TYPE_LAST_INT) { 1888 outBundle.putInt(name, v.data); 1889 } else if (v.type == TypedValue.TYPE_FLOAT) { 1890 outBundle.putFloat(name, v.getFloat()); 1891 } else { 1892 sa.recycle(); 1893 throw new XmlPullParserException("<" + tagName 1894 + "> only supports string, integer, float, color, and boolean at " 1895 + attrs.getPositionDescription()); 1896 } 1897 } else { 1898 sa.recycle(); 1899 throw new XmlPullParserException("<" + tagName 1900 + "> requires an android:value or android:resource attribute at " 1901 + attrs.getPositionDescription()); 1902 } 1903 1904 sa.recycle(); 1905 } 1906 1907 /** 1908 * Retrieve underlying AssetManager storage for these resources. 1909 */ 1910 public final AssetManager getAssets() { 1911 return mAssets; 1912 } 1913 1914 /** 1915 * Call this to remove all cached loaded layout resources from the 1916 * Resources object. Only intended for use with performance testing 1917 * tools. 1918 */ 1919 public final void flushLayoutCache() { 1920 synchronized (mCachedXmlBlockIds) { 1921 // First see if this block is in our cache. 1922 final int num = mCachedXmlBlockIds.length; 1923 for (int i=0; i<num; i++) { 1924 mCachedXmlBlockIds[i] = -0; 1925 XmlBlock oldBlock = mCachedXmlBlocks[i]; 1926 if (oldBlock != null) { 1927 oldBlock.close(); 1928 } 1929 mCachedXmlBlocks[i] = null; 1930 } 1931 } 1932 } 1933 1934 /** 1935 * Start preloading of resource data using this Resources object. Only 1936 * for use by the zygote process for loading common system resources. 1937 * {@hide} 1938 */ 1939 public final void startPreloading() { 1940 synchronized (sSync) { 1941 if (sPreloaded) { 1942 throw new IllegalStateException("Resources already preloaded"); 1943 } 1944 sPreloaded = true; 1945 mPreloading = true; 1946 sPreloadedDensity = DisplayMetrics.DENSITY_DEVICE; 1947 mConfiguration.densityDpi = sPreloadedDensity; 1948 updateConfiguration(null, null); 1949 } 1950 } 1951 1952 /** 1953 * Called by zygote when it is done preloading resources, to change back 1954 * to normal Resources operation. 1955 */ 1956 public final void finishPreloading() { 1957 if (mPreloading) { 1958 mPreloading = false; 1959 flushLayoutCache(); 1960 } 1961 } 1962 1963 private boolean verifyPreloadConfig(TypedValue value, String name) { 1964 if ((value.changingConfigurations&~(ActivityInfo.CONFIG_FONT_SCALE 1965 | ActivityInfo.CONFIG_DENSITY)) != 0) { 1966 String resName; 1967 try { 1968 resName = getResourceName(value.resourceId); 1969 } catch (NotFoundException e) { 1970 resName = "?"; 1971 } 1972 Log.w(TAG, "Preloaded " + name + " resource #0x" 1973 + Integer.toHexString(value.resourceId) 1974 + " (" + resName + ") that varies with configuration!!"); 1975 return false; 1976 } 1977 return true; 1978 } 1979 1980 /*package*/ Drawable loadDrawable(TypedValue value, int id) 1981 throws NotFoundException { 1982 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("PreloadDrawable", name); 1988 } 1989 } 1990 1991 boolean isColorDrawable = false; 1992 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 1993 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 1994 isColorDrawable = true; 1995 } 1996 final long key = isColorDrawable ? value.data : 1997 (((long) value.assetCookie) << 32) | value.data; 1998 1999 Drawable dr = getCachedDrawable(isColorDrawable ? mColorDrawableCache : mDrawableCache, key); 2000 2001 if (dr != null) { 2002 return dr; 2003 } 2004 2005 Drawable.ConstantState cs = isColorDrawable 2006 ? sPreloadedColorDrawables.get(key) 2007 : (sPreloadedDensity == mConfiguration.densityDpi 2008 ? sPreloadedDrawables.get(key) : null); 2009 if (cs != null) { 2010 dr = cs.newDrawable(this); 2011 } else { 2012 if (isColorDrawable) { 2013 dr = new ColorDrawable(value.data); 2014 } 2015 2016 if (dr == null) { 2017 if (value.string == null) { 2018 throw new NotFoundException( 2019 "Resource is not a Drawable (color or path): " + value); 2020 } 2021 2022 String file = value.string.toString(); 2023 2024 if (TRACE_FOR_MISS_PRELOAD) { 2025 // Log only framework resources 2026 if ((id >>> 24) == 0x1) { 2027 final String name = getResourceName(id); 2028 if (name != null) android.util.Log.d(TAG, "Loading framework drawable #" 2029 + Integer.toHexString(id) + ": " + name 2030 + " at " + file); 2031 } 2032 } 2033 2034 if (DEBUG_LOAD) Log.v(TAG, "Loading drawable for cookie " 2035 + value.assetCookie + ": " + file); 2036 2037 if (file.endsWith(".xml")) { 2038 try { 2039 XmlResourceParser rp = loadXmlResourceParser( 2040 file, id, value.assetCookie, "drawable"); 2041 dr = Drawable.createFromXml(this, rp); 2042 rp.close(); 2043 } catch (Exception e) { 2044 NotFoundException rnf = new NotFoundException( 2045 "File " + file + " from drawable resource ID #0x" 2046 + Integer.toHexString(id)); 2047 rnf.initCause(e); 2048 throw rnf; 2049 } 2050 2051 } else { 2052 try { 2053 InputStream is = mAssets.openNonAsset( 2054 value.assetCookie, file, AssetManager.ACCESS_STREAMING); 2055 // System.out.println("Opened file " + file + ": " + is); 2056 dr = Drawable.createFromResourceStream(this, value, is, 2057 file, null); 2058 is.close(); 2059 // System.out.println("Created stream: " + dr); 2060 } catch (Exception e) { 2061 NotFoundException rnf = new NotFoundException( 2062 "File " + file + " from drawable resource ID #0x" 2063 + Integer.toHexString(id)); 2064 rnf.initCause(e); 2065 throw rnf; 2066 } 2067 } 2068 } 2069 } 2070 2071 if (dr != null) { 2072 dr.setChangingConfigurations(value.changingConfigurations); 2073 cs = dr.getConstantState(); 2074 if (cs != null) { 2075 if (mPreloading) { 2076 if (verifyPreloadConfig(value, "drawable")) { 2077 if (isColorDrawable) { 2078 sPreloadedColorDrawables.put(key, cs); 2079 } else { 2080 sPreloadedDrawables.put(key, cs); 2081 } 2082 } 2083 } else { 2084 synchronized (mAccessLock) { 2085 //Log.i(TAG, "Saving cached drawable @ #" + 2086 // Integer.toHexString(key.intValue()) 2087 // + " in " + this + ": " + cs); 2088 if (isColorDrawable) { 2089 mColorDrawableCache.put(key, new WeakReference<Drawable.ConstantState>(cs)); 2090 } else { 2091 mDrawableCache.put(key, new WeakReference<Drawable.ConstantState>(cs)); 2092 } 2093 } 2094 } 2095 } 2096 } 2097 2098 return dr; 2099 } 2100 2101 private Drawable getCachedDrawable( 2102 LongSparseArray<WeakReference<ConstantState>> drawableCache, 2103 long key) { 2104 synchronized (mAccessLock) { 2105 WeakReference<Drawable.ConstantState> wr = drawableCache.get(key); 2106 if (wr != null) { // we have the key 2107 Drawable.ConstantState entry = wr.get(); 2108 if (entry != null) { 2109 //Log.i(TAG, "Returning cached drawable @ #" + 2110 // Integer.toHexString(((Integer)key).intValue()) 2111 // + " in " + this + ": " + entry); 2112 return entry.newDrawable(this); 2113 } 2114 else { // our entry has been purged 2115 drawableCache.delete(key); 2116 } 2117 } 2118 } 2119 return null; 2120 } 2121 2122 /*package*/ ColorStateList loadColorStateList(TypedValue value, int id) 2123 throws NotFoundException { 2124 if (TRACE_FOR_PRELOAD) { 2125 // Log only framework resources 2126 if ((id >>> 24) == 0x1) { 2127 final String name = getResourceName(id); 2128 if (name != null) android.util.Log.d("PreloadColorStateList", name); 2129 } 2130 } 2131 2132 final long key = (((long) value.assetCookie) << 32) | value.data; 2133 2134 ColorStateList csl; 2135 2136 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 2137 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2138 2139 csl = sPreloadedColorStateLists.get(key); 2140 if (csl != null) { 2141 return csl; 2142 } 2143 2144 csl = ColorStateList.valueOf(value.data); 2145 if (mPreloading) { 2146 if (verifyPreloadConfig(value, "color")) { 2147 sPreloadedColorStateLists.put(key, csl); 2148 } 2149 } 2150 2151 return csl; 2152 } 2153 2154 csl = getCachedColorStateList(key); 2155 if (csl != null) { 2156 return csl; 2157 } 2158 2159 csl = sPreloadedColorStateLists.get(key); 2160 if (csl != null) { 2161 return csl; 2162 } 2163 2164 if (value.string == null) { 2165 throw new NotFoundException( 2166 "Resource is not a ColorStateList (color or path): " + value); 2167 } 2168 2169 String file = value.string.toString(); 2170 2171 if (file.endsWith(".xml")) { 2172 try { 2173 XmlResourceParser rp = loadXmlResourceParser( 2174 file, id, value.assetCookie, "colorstatelist"); 2175 csl = ColorStateList.createFromXml(this, rp); 2176 rp.close(); 2177 } catch (Exception e) { 2178 NotFoundException rnf = new NotFoundException( 2179 "File " + file + " from color state list resource ID #0x" 2180 + Integer.toHexString(id)); 2181 rnf.initCause(e); 2182 throw rnf; 2183 } 2184 } else { 2185 throw new NotFoundException( 2186 "File " + file + " from drawable resource ID #0x" 2187 + Integer.toHexString(id) + ": .xml extension required"); 2188 } 2189 2190 if (csl != null) { 2191 if (mPreloading) { 2192 if (verifyPreloadConfig(value, "color")) { 2193 sPreloadedColorStateLists.put(key, csl); 2194 } 2195 } else { 2196 synchronized (mAccessLock) { 2197 //Log.i(TAG, "Saving cached color state list @ #" + 2198 // Integer.toHexString(key.intValue()) 2199 // + " in " + this + ": " + csl); 2200 mColorStateListCache.put(key, new WeakReference<ColorStateList>(csl)); 2201 } 2202 } 2203 } 2204 2205 return csl; 2206 } 2207 2208 private ColorStateList getCachedColorStateList(long key) { 2209 synchronized (mAccessLock) { 2210 WeakReference<ColorStateList> wr = mColorStateListCache.get(key); 2211 if (wr != null) { // we have the key 2212 ColorStateList entry = wr.get(); 2213 if (entry != null) { 2214 //Log.i(TAG, "Returning cached color state list @ #" + 2215 // Integer.toHexString(((Integer)key).intValue()) 2216 // + " in " + this + ": " + entry); 2217 return entry; 2218 } else { // our entry has been purged 2219 mColorStateListCache.delete(key); 2220 } 2221 } 2222 } 2223 return null; 2224 } 2225 2226 /*package*/ XmlResourceParser loadXmlResourceParser(int id, String type) 2227 throws NotFoundException { 2228 synchronized (mAccessLock) { 2229 TypedValue value = mTmpValue; 2230 getValue(id, value, true); 2231 if (value.type == TypedValue.TYPE_STRING) { 2232 return loadXmlResourceParser(value.string.toString(), id, 2233 value.assetCookie, type); 2234 } 2235 throw new NotFoundException( 2236 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 2237 + Integer.toHexString(value.type) + " is not valid"); 2238 } 2239 } 2240 2241 /*package*/ XmlResourceParser loadXmlResourceParser(String file, int id, 2242 int assetCookie, String type) throws NotFoundException { 2243 if (id != 0) { 2244 try { 2245 // These may be compiled... 2246 synchronized (mCachedXmlBlockIds) { 2247 // First see if this block is in our cache. 2248 final int num = mCachedXmlBlockIds.length; 2249 for (int i=0; i<num; i++) { 2250 if (mCachedXmlBlockIds[i] == id) { 2251 //System.out.println("**** REUSING XML BLOCK! id=" 2252 // + id + ", index=" + i); 2253 return mCachedXmlBlocks[i].newParser(); 2254 } 2255 } 2256 2257 // Not in the cache, create a new block and put it at 2258 // the next slot in the cache. 2259 XmlBlock block = mAssets.openXmlBlockAsset( 2260 assetCookie, file); 2261 if (block != null) { 2262 int pos = mLastCachedXmlBlockIndex+1; 2263 if (pos >= num) pos = 0; 2264 mLastCachedXmlBlockIndex = pos; 2265 XmlBlock oldBlock = mCachedXmlBlocks[pos]; 2266 if (oldBlock != null) { 2267 oldBlock.close(); 2268 } 2269 mCachedXmlBlockIds[pos] = id; 2270 mCachedXmlBlocks[pos] = block; 2271 //System.out.println("**** CACHING NEW XML BLOCK! id=" 2272 // + id + ", index=" + pos); 2273 return block.newParser(); 2274 } 2275 } 2276 } catch (Exception e) { 2277 NotFoundException rnf = new NotFoundException( 2278 "File " + file + " from xml type " + type + " resource ID #0x" 2279 + Integer.toHexString(id)); 2280 rnf.initCause(e); 2281 throw rnf; 2282 } 2283 } 2284 2285 throw new NotFoundException( 2286 "File " + file + " from xml type " + type + " resource ID #0x" 2287 + Integer.toHexString(id)); 2288 } 2289 2290 private TypedArray getCachedStyledAttributes(int len) { 2291 synchronized (mAccessLock) { 2292 TypedArray attrs = mCachedStyledAttributes; 2293 if (attrs != null) { 2294 mCachedStyledAttributes = null; 2295 if (DEBUG_ATTRIBUTES_CACHE) { 2296 mLastRetrievedAttrs = new RuntimeException("here"); 2297 mLastRetrievedAttrs.fillInStackTrace(); 2298 } 2299 2300 attrs.mLength = len; 2301 int fullLen = len * AssetManager.STYLE_NUM_ENTRIES; 2302 if (attrs.mData.length >= fullLen) { 2303 return attrs; 2304 } 2305 attrs.mData = new int[fullLen]; 2306 attrs.mIndices = new int[1+len]; 2307 return attrs; 2308 } 2309 if (DEBUG_ATTRIBUTES_CACHE) { 2310 RuntimeException here = new RuntimeException("here"); 2311 here.fillInStackTrace(); 2312 if (mLastRetrievedAttrs != null) { 2313 Log.i(TAG, "Allocated new TypedArray of " + len + " in " + this, here); 2314 Log.i(TAG, "Last retrieved attributes here", mLastRetrievedAttrs); 2315 } 2316 mLastRetrievedAttrs = here; 2317 } 2318 return new TypedArray(this, 2319 new int[len*AssetManager.STYLE_NUM_ENTRIES], 2320 new int[1+len], len); 2321 } 2322 } 2323 2324 private Resources() { 2325 mAssets = AssetManager.getSystem(); 2326 // NOTE: Intentionally leaving this uninitialized (all values set 2327 // to zero), so that anyone who tries to do something that requires 2328 // metrics will get a very wrong value. 2329 mConfiguration.setToDefaults(); 2330 mMetrics.setToDefaults(); 2331 updateConfiguration(null, null); 2332 mAssets.ensureStringBlocks(); 2333 mCompatibilityInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 2334 } 2335} 2336