Resources.java revision 95d5ab30f2f91b63af2f493548dc67e90c052831
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 sPreloaded; 93 private static int sPreloadedDensity; 94 95 /*package*/ final TypedValue mTmpValue = new TypedValue(); 96 /*package*/ final Configuration mTmpConfig = new Configuration(); 97 98 // These are protected by the mTmpValue lock. 99 private final LongSparseArray<WeakReference<Drawable.ConstantState> > mDrawableCache 100 = new LongSparseArray<WeakReference<Drawable.ConstantState> >(); 101 private final LongSparseArray<WeakReference<ColorStateList> > mColorStateListCache 102 = new LongSparseArray<WeakReference<ColorStateList> >(); 103 private final LongSparseArray<WeakReference<Drawable.ConstantState> > mColorDrawableCache 104 = new LongSparseArray<WeakReference<Drawable.ConstantState> >(); 105 private boolean mPreloading; 106 107 /*package*/ TypedArray mCachedStyledAttributes = null; 108 RuntimeException mLastRetrievedAttrs = null; 109 110 private int mLastCachedXmlBlockIndex = -1; 111 private final int[] mCachedXmlBlockIds = { 0, 0, 0, 0 }; 112 private final XmlBlock[] mCachedXmlBlocks = new XmlBlock[4]; 113 114 /*package*/ final AssetManager mAssets; 115 private final Configuration mConfiguration = new Configuration(); 116 /*package*/ final DisplayMetrics mMetrics = new DisplayMetrics(); 117 private NativePluralRules mPluralRule; 118 119 private CompatibilityInfo mCompatibilityInfo; 120 121 /** @hide */ 122 public static int selectDefaultTheme(int curTheme, int targetSdkVersion) { 123 return selectSystemTheme(curTheme, targetSdkVersion, 124 com.android.internal.R.style.Theme, 125 com.android.internal.R.style.Theme_Holo, 126 com.android.internal.R.style.Theme_DeviceDefault); 127 } 128 129 /** @hide */ 130 public static int selectSystemTheme(int curTheme, int targetSdkVersion, 131 int orig, int holo, int deviceDefault) { 132 if (curTheme != 0) { 133 return curTheme; 134 } 135 if (targetSdkVersion < Build.VERSION_CODES.HONEYCOMB) { 136 return orig; 137 } 138 if (targetSdkVersion < Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 139 return holo; 140 } 141 return deviceDefault; 142 } 143 144 /** 145 * This exception is thrown by the resource APIs when a requested resource 146 * can not be found. 147 */ 148 public static class NotFoundException extends RuntimeException { 149 public NotFoundException() { 150 } 151 152 public NotFoundException(String name) { 153 super(name); 154 } 155 } 156 157 /** 158 * Create a new Resources object on top of an existing set of assets in an 159 * AssetManager. 160 * 161 * @param assets Previously created AssetManager. 162 * @param metrics Current display metrics to consider when 163 * selecting/computing resource values. 164 * @param config Desired device configuration to consider when 165 * selecting/computing resource values (optional). 166 */ 167 public Resources(AssetManager assets, DisplayMetrics metrics, Configuration config) { 168 this(assets, metrics, config, null); 169 } 170 171 /** 172 * Creates a new Resources object with CompatibilityInfo. 173 * 174 * @param assets Previously created AssetManager. 175 * @param metrics Current display metrics to consider when 176 * selecting/computing resource values. 177 * @param config Desired device configuration to consider when 178 * selecting/computing resource values (optional). 179 * @param compInfo this resource's compatibility info. It will use the default compatibility 180 * info when it's null. 181 * @hide 182 */ 183 public Resources(AssetManager assets, DisplayMetrics metrics, 184 Configuration config, CompatibilityInfo compInfo) { 185 mAssets = assets; 186 mMetrics.setToDefaults(); 187 mCompatibilityInfo = compInfo; 188 updateConfiguration(config, metrics); 189 assets.ensureStringBlocks(); 190 } 191 192 /** 193 * Return a global shared Resources object that provides access to only 194 * system resources (no application resources), and is not configured for 195 * the current screen (can not use dimension units, does not change based 196 * on orientation, etc). 197 */ 198 public static Resources getSystem() { 199 synchronized (mSync) { 200 Resources ret = mSystem; 201 if (ret == null) { 202 ret = new Resources(); 203 mSystem = ret; 204 } 205 206 return ret; 207 } 208 } 209 210 /** 211 * Return the string value associated with a particular resource ID. The 212 * returned object will be a String if this is a plain string; it will be 213 * some other type of CharSequence if it is styled. 214 * {@more} 215 * 216 * @param id The desired resource identifier, as generated by the aapt 217 * tool. This integer encodes the package, type, and resource 218 * entry. The value 0 is an invalid identifier. 219 * 220 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 221 * 222 * @return CharSequence The string data associated with the resource, plus 223 * possibly styled text information. 224 */ 225 public CharSequence getText(int id) throws NotFoundException { 226 CharSequence res = mAssets.getResourceText(id); 227 if (res != null) { 228 return res; 229 } 230 throw new NotFoundException("String resource ID #0x" 231 + Integer.toHexString(id)); 232 } 233 234 /** 235 * Returns the character sequence necessary for grammatically correct pluralization 236 * of the given resource ID for the given quantity. 237 * Note that the character sequence is selected based solely on grammatical necessity, 238 * and that such rules differ between languages. Do not assume you know which string 239 * will be returned for a given quantity. See 240 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 241 * for more detail. 242 * 243 * @param id The desired resource identifier, as generated by the aapt 244 * tool. This integer encodes the package, type, and resource 245 * entry. The value 0 is an invalid identifier. 246 * @param quantity The number used to get the correct string for the current language's 247 * plural rules. 248 * 249 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 250 * 251 * @return CharSequence The string data associated with the resource, plus 252 * possibly styled text information. 253 */ 254 public CharSequence getQuantityText(int id, int quantity) throws NotFoundException { 255 NativePluralRules rule = getPluralRule(); 256 CharSequence res = mAssets.getResourceBagText(id, 257 attrForQuantityCode(rule.quantityForInt(quantity))); 258 if (res != null) { 259 return res; 260 } 261 res = mAssets.getResourceBagText(id, ID_OTHER); 262 if (res != null) { 263 return res; 264 } 265 throw new NotFoundException("Plural resource ID #0x" + Integer.toHexString(id) 266 + " quantity=" + quantity 267 + " item=" + stringForQuantityCode(rule.quantityForInt(quantity))); 268 } 269 270 private NativePluralRules getPluralRule() { 271 synchronized (mSync) { 272 if (mPluralRule == null) { 273 mPluralRule = NativePluralRules.forLocale(mConfiguration.locale); 274 } 275 return mPluralRule; 276 } 277 } 278 279 private static int attrForQuantityCode(int quantityCode) { 280 switch (quantityCode) { 281 case NativePluralRules.ZERO: return 0x01000005; 282 case NativePluralRules.ONE: return 0x01000006; 283 case NativePluralRules.TWO: return 0x01000007; 284 case NativePluralRules.FEW: return 0x01000008; 285 case NativePluralRules.MANY: return 0x01000009; 286 default: return ID_OTHER; 287 } 288 } 289 290 private static String stringForQuantityCode(int quantityCode) { 291 switch (quantityCode) { 292 case NativePluralRules.ZERO: return "zero"; 293 case NativePluralRules.ONE: return "one"; 294 case NativePluralRules.TWO: return "two"; 295 case NativePluralRules.FEW: return "few"; 296 case NativePluralRules.MANY: return "many"; 297 default: return "other"; 298 } 299 } 300 301 /** 302 * Return the string value associated with a particular resource ID. It 303 * will be stripped of any styled text information. 304 * {@more} 305 * 306 * @param id The desired resource identifier, as generated by the aapt 307 * tool. This integer encodes the package, type, and resource 308 * entry. The value 0 is an invalid identifier. 309 * 310 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 311 * 312 * @return String The string data associated with the resource, 313 * stripped of styled text information. 314 */ 315 public String getString(int id) throws NotFoundException { 316 CharSequence res = getText(id); 317 if (res != null) { 318 return res.toString(); 319 } 320 throw new NotFoundException("String resource ID #0x" 321 + Integer.toHexString(id)); 322 } 323 324 325 /** 326 * Return the string value associated with a particular resource ID, 327 * substituting the format arguments as defined in {@link java.util.Formatter} 328 * and {@link java.lang.String#format}. It will be stripped of any styled text 329 * information. 330 * {@more} 331 * 332 * @param id The desired resource identifier, as generated by the aapt 333 * tool. This integer encodes the package, type, and resource 334 * entry. The value 0 is an invalid identifier. 335 * 336 * @param formatArgs The format arguments that will be used for substitution. 337 * 338 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 339 * 340 * @return String The string data associated with the resource, 341 * stripped of styled text information. 342 */ 343 public String getString(int id, Object... formatArgs) throws NotFoundException { 344 String raw = getString(id); 345 return String.format(mConfiguration.locale, raw, formatArgs); 346 } 347 348 /** 349 * Formats the string necessary for grammatically correct pluralization 350 * of the given resource ID for the given quantity, using the given arguments. 351 * Note that the string is selected based solely on grammatical necessity, 352 * and that such rules differ between languages. Do not assume you know which string 353 * will be returned for a given quantity. See 354 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 355 * for more detail. 356 * 357 * <p>Substitution of format arguments works as if using 358 * {@link java.util.Formatter} and {@link java.lang.String#format}. 359 * The resulting string will be stripped of any styled text information. 360 * 361 * @param id The desired resource identifier, as generated by the aapt 362 * tool. This integer encodes the package, type, and resource 363 * entry. The value 0 is an invalid identifier. 364 * @param quantity The number used to get the correct string for the current language's 365 * plural rules. 366 * @param formatArgs The format arguments that will be used for substitution. 367 * 368 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 369 * 370 * @return String The string data associated with the resource, 371 * stripped of styled text information. 372 */ 373 public String getQuantityString(int id, int quantity, Object... formatArgs) 374 throws NotFoundException { 375 String raw = getQuantityText(id, quantity).toString(); 376 return String.format(mConfiguration.locale, raw, formatArgs); 377 } 378 379 /** 380 * Returns the string necessary for grammatically correct pluralization 381 * of the given resource ID for the given quantity. 382 * Note that the string is selected based solely on grammatical necessity, 383 * and that such rules differ between languages. Do not assume you know which string 384 * will be returned for a given quantity. See 385 * <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String Resources</a> 386 * for more detail. 387 * 388 * @param id The desired resource identifier, as generated by the aapt 389 * tool. This integer encodes the package, type, and resource 390 * entry. The value 0 is an invalid identifier. 391 * @param quantity The number used to get the correct string for the current language's 392 * plural rules. 393 * 394 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 395 * 396 * @return String The string data associated with the resource, 397 * stripped of styled text information. 398 */ 399 public String getQuantityString(int id, int quantity) throws NotFoundException { 400 return getQuantityText(id, quantity).toString(); 401 } 402 403 /** 404 * Return the string value associated with a particular resource ID. The 405 * returned object will be a String if this is a plain string; it will be 406 * some other type of CharSequence if it is styled. 407 * 408 * @param id The desired resource identifier, as generated by the aapt 409 * tool. This integer encodes the package, type, and resource 410 * entry. The value 0 is an invalid identifier. 411 * 412 * @param def The default CharSequence to return. 413 * 414 * @return CharSequence The string data associated with the resource, plus 415 * possibly styled text information, or def if id is 0 or not found. 416 */ 417 public CharSequence getText(int id, CharSequence def) { 418 CharSequence res = id != 0 ? mAssets.getResourceText(id) : null; 419 return res != null ? res : def; 420 } 421 422 /** 423 * Return the styled text array associated with a particular resource ID. 424 * 425 * @param id The desired resource identifier, as generated by the aapt 426 * tool. This integer encodes the package, type, and resource 427 * entry. The value 0 is an invalid identifier. 428 * 429 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 430 * 431 * @return The styled text array associated with the resource. 432 */ 433 public CharSequence[] getTextArray(int id) throws NotFoundException { 434 CharSequence[] res = mAssets.getResourceTextArray(id); 435 if (res != null) { 436 return res; 437 } 438 throw new NotFoundException("Text array resource ID #0x" 439 + Integer.toHexString(id)); 440 } 441 442 /** 443 * Return the string array associated with a particular resource ID. 444 * 445 * @param id The desired resource identifier, as generated by the aapt 446 * tool. This integer encodes the package, type, and resource 447 * entry. The value 0 is an invalid identifier. 448 * 449 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 450 * 451 * @return The string array associated with the resource. 452 */ 453 public String[] getStringArray(int id) throws NotFoundException { 454 String[] res = mAssets.getResourceStringArray(id); 455 if (res != null) { 456 return res; 457 } 458 throw new NotFoundException("String array resource ID #0x" 459 + Integer.toHexString(id)); 460 } 461 462 /** 463 * Return the int array associated with a particular resource ID. 464 * 465 * @param id The desired resource identifier, as generated by the aapt 466 * tool. This integer encodes the package, type, and resource 467 * entry. The value 0 is an invalid identifier. 468 * 469 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 470 * 471 * @return The int array associated with the resource. 472 */ 473 public int[] getIntArray(int id) throws NotFoundException { 474 int[] res = mAssets.getArrayIntResource(id); 475 if (res != null) { 476 return res; 477 } 478 throw new NotFoundException("Int array resource ID #0x" 479 + Integer.toHexString(id)); 480 } 481 482 /** 483 * Return an array of heterogeneous values. 484 * 485 * @param id The desired resource identifier, as generated by the aapt 486 * tool. This integer encodes the package, type, and resource 487 * entry. The value 0 is an invalid identifier. 488 * 489 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 490 * 491 * @return Returns a TypedArray holding an array of the array values. 492 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 493 * when done with it. 494 */ 495 public TypedArray obtainTypedArray(int id) throws NotFoundException { 496 int len = mAssets.getArraySize(id); 497 if (len < 0) { 498 throw new NotFoundException("Array resource ID #0x" 499 + Integer.toHexString(id)); 500 } 501 502 TypedArray array = getCachedStyledAttributes(len); 503 array.mLength = mAssets.retrieveArray(id, array.mData); 504 array.mIndices[0] = 0; 505 506 return array; 507 } 508 509 /** 510 * Retrieve a dimensional for a particular resource ID. Unit 511 * conversions are based on the current {@link DisplayMetrics} associated 512 * with the resources. 513 * 514 * @param id The desired resource identifier, as generated by the aapt 515 * tool. This integer encodes the package, type, and resource 516 * entry. The value 0 is an invalid identifier. 517 * 518 * @return Resource dimension value multiplied by the appropriate 519 * metric. 520 * 521 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 522 * 523 * @see #getDimensionPixelOffset 524 * @see #getDimensionPixelSize 525 */ 526 public float getDimension(int id) throws NotFoundException { 527 synchronized (mTmpValue) { 528 TypedValue value = mTmpValue; 529 getValue(id, value, true); 530 if (value.type == TypedValue.TYPE_DIMENSION) { 531 return TypedValue.complexToDimension(value.data, mMetrics); 532 } 533 throw new NotFoundException( 534 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 535 + Integer.toHexString(value.type) + " is not valid"); 536 } 537 } 538 539 /** 540 * Retrieve a dimensional for a particular resource ID for use 541 * as an offset in raw pixels. This is the same as 542 * {@link #getDimension}, except the returned value is converted to 543 * integer pixels for you. An offset conversion involves simply 544 * truncating the base value to an integer. 545 * 546 * @param id The desired resource identifier, as generated by the aapt 547 * tool. This integer encodes the package, type, and resource 548 * entry. The value 0 is an invalid identifier. 549 * 550 * @return Resource dimension value multiplied by the appropriate 551 * metric and truncated to integer pixels. 552 * 553 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 554 * 555 * @see #getDimension 556 * @see #getDimensionPixelSize 557 */ 558 public int getDimensionPixelOffset(int id) throws NotFoundException { 559 synchronized (mTmpValue) { 560 TypedValue value = mTmpValue; 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 (mTmpValue) { 594 TypedValue value = mTmpValue; 595 getValue(id, value, true); 596 if (value.type == TypedValue.TYPE_DIMENSION) { 597 return TypedValue.complexToDimensionPixelSize( 598 value.data, mMetrics); 599 } 600 throw new NotFoundException( 601 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 602 + Integer.toHexString(value.type) + " is not valid"); 603 } 604 } 605 606 /** 607 * Retrieve a fractional unit for a particular resource ID. 608 * 609 * @param id The desired resource identifier, as generated by the aapt 610 * tool. This integer encodes the package, type, and resource 611 * entry. The value 0 is an invalid identifier. 612 * @param base The base value of this fraction. In other words, a 613 * standard fraction is multiplied by this value. 614 * @param pbase The parent base value of this fraction. In other 615 * words, a parent fraction (nn%p) is multiplied by this 616 * value. 617 * 618 * @return Attribute fractional value multiplied by the appropriate 619 * base value. 620 * 621 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 622 */ 623 public float getFraction(int id, int base, int pbase) { 624 synchronized (mTmpValue) { 625 TypedValue value = mTmpValue; 626 getValue(id, value, true); 627 if (value.type == TypedValue.TYPE_FRACTION) { 628 return TypedValue.complexToFraction(value.data, base, pbase); 629 } 630 throw new NotFoundException( 631 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 632 + Integer.toHexString(value.type) + " is not valid"); 633 } 634 } 635 636 /** 637 * Return a drawable object associated with a particular resource ID. 638 * Various types of objects will be returned depending on the underlying 639 * resource -- for example, a solid color, PNG image, scalable image, etc. 640 * The Drawable API hides these implementation details. 641 * 642 * <p class="note"><strong>Note:</strong> Prior to 643 * {@link android.os.Build.VERSION_CODES#JELLY_BEAN}, this function 644 * would not correctly retrieve the final configuration density when 645 * the resource ID passed here is an alias to another Drawable resource. 646 * This means that if the density configuration of the alias resource 647 * is different than the actual resource, the density of the returned 648 * Drawable would be incorrect, resulting in bad scaling. To work 649 * around this, you can instead retrieve the Drawable through 650 * {@link TypedArray#getDrawable TypedArray.getDrawable}. Use 651 * {@link android.content.Context#obtainStyledAttributes(int[]) 652 * Context.obtainStyledAttributes} with 653 * an array containing the resource ID of interest to create the TypedArray.</p> 654 * 655 * @param id The desired resource identifier, as generated by the aapt 656 * tool. This integer encodes the package, type, and resource 657 * entry. The value 0 is an invalid identifier. 658 * 659 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 660 * 661 * @return Drawable An object that can be used to draw this resource. 662 */ 663 public Drawable getDrawable(int id) throws NotFoundException { 664 synchronized (mTmpValue) { 665 TypedValue value = mTmpValue; 666 getValue(id, value, true); 667 return loadDrawable(value, id); 668 } 669 } 670 671 /** 672 * Return a drawable object associated with a particular resource ID for the 673 * given screen density in DPI. This will set the drawable's density to be 674 * the device's density multiplied by the ratio of actual drawable density 675 * to requested density. This allows the drawable to be scaled up to the 676 * correct size if needed. Various types of objects will be returned 677 * depending on the underlying resource -- for example, a solid color, PNG 678 * image, scalable image, etc. The Drawable API hides these implementation 679 * details. 680 * 681 * @param id The desired resource identifier, as generated by the aapt tool. 682 * This integer encodes the package, type, and resource entry. 683 * The value 0 is an invalid identifier. 684 * @param density the desired screen density indicated by the resource as 685 * found in {@link DisplayMetrics}. 686 * @throws NotFoundException Throws NotFoundException if the given ID does 687 * not exist. 688 * @return Drawable An object that can be used to draw this resource. 689 */ 690 public Drawable getDrawableForDensity(int id, int density) throws NotFoundException { 691 synchronized (mTmpValue) { 692 TypedValue value = mTmpValue; 693 getValueForDensity(id, density, value, true); 694 695 /* 696 * Pretend the requested density is actually the display density. If 697 * the drawable returned is not the requested density, then force it 698 * to be scaled later by dividing its density by the ratio of 699 * requested density to actual device density. Drawables that have 700 * undefined density or no density don't need to be handled here. 701 */ 702 if (value.density > 0 && value.density != TypedValue.DENSITY_NONE) { 703 if (value.density == density) { 704 value.density = mMetrics.densityDpi; 705 } else { 706 value.density = (value.density * mMetrics.densityDpi) / density; 707 } 708 } 709 710 return loadDrawable(value, id); 711 } 712 } 713 714 /** 715 * Return a movie object associated with the particular resource ID. 716 * @param id The desired resource identifier, as generated by the aapt 717 * tool. This integer encodes the package, type, and resource 718 * entry. The value 0 is an invalid identifier. 719 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 720 * 721 */ 722 public Movie getMovie(int id) throws NotFoundException { 723 InputStream is = openRawResource(id); 724 Movie movie = Movie.decodeStream(is); 725 try { 726 is.close(); 727 } 728 catch (java.io.IOException e) { 729 // don't care, since the return value is valid 730 } 731 return movie; 732 } 733 734 /** 735 * Return a color integer associated with a particular resource ID. 736 * If the resource holds a complex 737 * {@link android.content.res.ColorStateList}, then the default color from 738 * the set is returned. 739 * 740 * @param id The desired resource identifier, as generated by the aapt 741 * tool. This integer encodes the package, type, and resource 742 * entry. The value 0 is an invalid identifier. 743 * 744 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 745 * 746 * @return Returns a single color value in the form 0xAARRGGBB. 747 */ 748 public int getColor(int id) throws NotFoundException { 749 synchronized (mTmpValue) { 750 TypedValue value = mTmpValue; 751 getValue(id, value, true); 752 if (value.type >= TypedValue.TYPE_FIRST_INT 753 && value.type <= TypedValue.TYPE_LAST_INT) { 754 return value.data; 755 } else if (value.type == TypedValue.TYPE_STRING) { 756 ColorStateList csl = loadColorStateList(mTmpValue, id); 757 return csl.getDefaultColor(); 758 } 759 throw new NotFoundException( 760 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 761 + Integer.toHexString(value.type) + " is not valid"); 762 } 763 } 764 765 /** 766 * Return a color state list associated with a particular resource ID. The 767 * resource may contain either a single raw color value, or a complex 768 * {@link android.content.res.ColorStateList} holding multiple possible colors. 769 * 770 * @param id The desired resource identifier of a {@link ColorStateList}, 771 * as generated by the aapt 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 ColorStateList object containing either a single 777 * solid color or multiple colors that can be selected based on a state. 778 */ 779 public ColorStateList getColorStateList(int id) throws NotFoundException { 780 synchronized (mTmpValue) { 781 TypedValue value = mTmpValue; 782 getValue(id, value, true); 783 return loadColorStateList(value, id); 784 } 785 } 786 787 /** 788 * Return a boolean associated with a particular resource ID. This can be 789 * used with any integral resource value, and will return true if it is 790 * non-zero. 791 * 792 * @param id The desired resource identifier, as generated by the aapt 793 * tool. This integer encodes the package, type, and resource 794 * entry. The value 0 is an invalid identifier. 795 * 796 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 797 * 798 * @return Returns the boolean value contained in the resource. 799 */ 800 public boolean getBoolean(int id) throws NotFoundException { 801 synchronized (mTmpValue) { 802 TypedValue value = mTmpValue; 803 getValue(id, value, true); 804 if (value.type >= TypedValue.TYPE_FIRST_INT 805 && value.type <= TypedValue.TYPE_LAST_INT) { 806 return value.data != 0; 807 } 808 throw new NotFoundException( 809 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 810 + Integer.toHexString(value.type) + " is not valid"); 811 } 812 } 813 814 /** 815 * Return an integer associated with a particular resource ID. 816 * 817 * @param id The desired resource identifier, as generated by the aapt 818 * tool. This integer encodes the package, type, and resource 819 * entry. The value 0 is an invalid identifier. 820 * 821 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 822 * 823 * @return Returns the integer value contained in the resource. 824 */ 825 public int getInteger(int id) throws NotFoundException { 826 synchronized (mTmpValue) { 827 TypedValue value = mTmpValue; 828 getValue(id, value, true); 829 if (value.type >= TypedValue.TYPE_FIRST_INT 830 && value.type <= TypedValue.TYPE_LAST_INT) { 831 return value.data; 832 } 833 throw new NotFoundException( 834 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 835 + Integer.toHexString(value.type) + " is not valid"); 836 } 837 } 838 839 /** 840 * Return an XmlResourceParser through which you can read a view layout 841 * description for the given resource ID. This parser has limited 842 * functionality -- in particular, you can't change its input, and only 843 * the high-level events are available. 844 * 845 * <p>This function is really a simple wrapper for calling 846 * {@link #getXml} with a layout resource. 847 * 848 * @param id The desired resource identifier, as generated by the aapt 849 * tool. This integer encodes the package, type, and resource 850 * entry. The value 0 is an invalid identifier. 851 * 852 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 853 * 854 * @return A new parser object through which you can read 855 * the XML data. 856 * 857 * @see #getXml 858 */ 859 public XmlResourceParser getLayout(int id) throws NotFoundException { 860 return loadXmlResourceParser(id, "layout"); 861 } 862 863 /** 864 * Return an XmlResourceParser through which you can read an animation 865 * description for the given resource ID. This parser has limited 866 * functionality -- in particular, you can't change its input, and only 867 * the high-level events are available. 868 * 869 * <p>This function is really a simple wrapper for calling 870 * {@link #getXml} with an animation resource. 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 A new parser object through which you can read 879 * the XML data. 880 * 881 * @see #getXml 882 */ 883 public XmlResourceParser getAnimation(int id) throws NotFoundException { 884 return loadXmlResourceParser(id, "anim"); 885 } 886 887 /** 888 * Return an XmlResourceParser through which you can read a generic XML 889 * resource for the given resource ID. 890 * 891 * <p>The XmlPullParser implementation returned here has some limited 892 * functionality. In particular, you can't change its input, and only 893 * high-level parsing events are available (since the document was 894 * pre-parsed for you at build time, which involved merging text and 895 * stripping comments). 896 * 897 * @param id The desired resource identifier, as generated by the aapt 898 * tool. This integer encodes the package, type, and resource 899 * entry. The value 0 is an invalid identifier. 900 * 901 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 902 * 903 * @return A new parser object through which you can read 904 * the XML data. 905 * 906 * @see android.util.AttributeSet 907 */ 908 public XmlResourceParser getXml(int id) throws NotFoundException { 909 return loadXmlResourceParser(id, "xml"); 910 } 911 912 /** 913 * Open a data stream for reading a raw resource. This can only be used 914 * with resources whose value is the name of an asset files -- that is, it can be 915 * used to open drawable, sound, and raw resources; it will fail on string 916 * and color resources. 917 * 918 * @param id The resource identifier to open, as generated by the appt 919 * tool. 920 * 921 * @return InputStream Access to the resource data. 922 * 923 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 924 * 925 */ 926 public InputStream openRawResource(int id) throws NotFoundException { 927 synchronized (mTmpValue) { 928 return openRawResource(id, mTmpValue); 929 } 930 } 931 932 /** 933 * Open a data stream for reading a raw resource. This can only be used 934 * with resources whose value is the name of an asset file -- that is, it can be 935 * used to open drawable, sound, and raw resources; it will fail on string 936 * and color resources. 937 * 938 * @param id The resource identifier to open, as generated by the appt tool. 939 * @param value The TypedValue object to hold the resource information. 940 * 941 * @return InputStream Access to the resource data. 942 * 943 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 944 */ 945 public InputStream openRawResource(int id, TypedValue value) throws NotFoundException { 946 getValue(id, value, true); 947 948 try { 949 return mAssets.openNonAsset(value.assetCookie, value.string.toString(), 950 AssetManager.ACCESS_STREAMING); 951 } catch (Exception e) { 952 NotFoundException rnf = new NotFoundException("File " + value.string.toString() + 953 " from drawable resource ID #0x" + Integer.toHexString(id)); 954 rnf.initCause(e); 955 throw rnf; 956 } 957 } 958 959 /** 960 * Open a file descriptor for reading a raw resource. This can only be used 961 * with resources whose value is the name of an asset files -- that is, it can be 962 * used to open drawable, sound, and raw resources; it will fail on string 963 * and color resources. 964 * 965 * <p>This function only works for resources that are stored in the package 966 * as uncompressed data, which typically includes things like mp3 files 967 * and png images. 968 * 969 * @param id The resource identifier to open, as generated by the appt 970 * tool. 971 * 972 * @return AssetFileDescriptor A new file descriptor you can use to read 973 * the resource. This includes the file descriptor itself, as well as the 974 * offset and length of data where the resource appears in the file. A 975 * null is returned if the file exists but is compressed. 976 * 977 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 978 * 979 */ 980 public AssetFileDescriptor openRawResourceFd(int id) throws NotFoundException { 981 synchronized (mTmpValue) { 982 TypedValue value = mTmpValue; 983 getValue(id, value, true); 984 985 try { 986 return mAssets.openNonAssetFd( 987 value.assetCookie, value.string.toString()); 988 } catch (Exception e) { 989 NotFoundException rnf = new NotFoundException( 990 "File " + value.string.toString() 991 + " from drawable resource ID #0x" 992 + Integer.toHexString(id)); 993 rnf.initCause(e); 994 throw rnf; 995 } 996 997 } 998 } 999 1000 /** 1001 * Return the raw data associated with a particular resource ID. 1002 * 1003 * @param id The desired resource identifier, as generated by the aapt 1004 * tool. This integer encodes the package, type, and resource 1005 * entry. The value 0 is an invalid identifier. 1006 * @param outValue Object in which to place the resource data. 1007 * @param resolveRefs If true, a resource that is a reference to another 1008 * resource will be followed so that you receive the 1009 * actual final resource data. If false, the TypedValue 1010 * will be filled in with the reference itself. 1011 * 1012 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1013 * 1014 */ 1015 public void getValue(int id, TypedValue outValue, boolean resolveRefs) 1016 throws NotFoundException { 1017 boolean found = mAssets.getResourceValue(id, 0, outValue, resolveRefs); 1018 if (found) { 1019 return; 1020 } 1021 throw new NotFoundException("Resource ID #0x" 1022 + Integer.toHexString(id)); 1023 } 1024 1025 /** 1026 * Get the raw value associated with a resource with associated density. 1027 * 1028 * @param id resource identifier 1029 * @param density density in DPI 1030 * @param resolveRefs If true, a resource that is a reference to another 1031 * resource will be followed so that you receive the actual final 1032 * resource data. If false, the TypedValue will be filled in with 1033 * the reference itself. 1034 * @throws NotFoundException Throws NotFoundException if the given ID does 1035 * not exist. 1036 * @see #getValue(String, TypedValue, boolean) 1037 */ 1038 public void getValueForDensity(int id, int density, TypedValue outValue, boolean resolveRefs) 1039 throws NotFoundException { 1040 boolean found = mAssets.getResourceValue(id, density, outValue, resolveRefs); 1041 if (found) { 1042 return; 1043 } 1044 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id)); 1045 } 1046 1047 /** 1048 * Return the raw data associated with a particular resource ID. 1049 * See getIdentifier() for information on how names are mapped to resource 1050 * IDs, and getString(int) for information on how string resources are 1051 * retrieved. 1052 * 1053 * <p>Note: use of this function is discouraged. It is much more 1054 * efficient to retrieve resources by identifier than by name. 1055 * 1056 * @param name The name of the desired resource. This is passed to 1057 * getIdentifier() with a default type of "string". 1058 * @param outValue Object in which to place the resource data. 1059 * @param resolveRefs If true, a resource that is a reference to another 1060 * resource will be followed so that you receive the 1061 * actual final resource data. If false, the TypedValue 1062 * will be filled in with the reference itself. 1063 * 1064 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1065 * 1066 */ 1067 public void getValue(String name, TypedValue outValue, boolean resolveRefs) 1068 throws NotFoundException { 1069 int id = getIdentifier(name, "string", null); 1070 if (id != 0) { 1071 getValue(id, outValue, resolveRefs); 1072 return; 1073 } 1074 throw new NotFoundException("String resource name " + name); 1075 } 1076 1077 /** 1078 * This class holds the current attribute values for a particular theme. 1079 * In other words, a Theme is a set of values for resource attributes; 1080 * these are used in conjunction with {@link TypedArray} 1081 * to resolve the final value for an attribute. 1082 * 1083 * <p>The Theme's attributes come into play in two ways: (1) a styled 1084 * attribute can explicit reference a value in the theme through the 1085 * "?themeAttribute" syntax; (2) if no value has been defined for a 1086 * particular styled attribute, as a last resort we will try to find that 1087 * attribute's value in the Theme. 1088 * 1089 * <p>You will normally use the {@link #obtainStyledAttributes} APIs to 1090 * retrieve XML attributes with style and theme information applied. 1091 */ 1092 public final class Theme { 1093 /** 1094 * Place new attribute values into the theme. The style resource 1095 * specified by <var>resid</var> will be retrieved from this Theme's 1096 * resources, its values placed into the Theme object. 1097 * 1098 * <p>The semantics of this function depends on the <var>force</var> 1099 * argument: If false, only values that are not already defined in 1100 * the theme will be copied from the system resource; otherwise, if 1101 * any of the style's attributes are already defined in the theme, the 1102 * current values in the theme will be overwritten. 1103 * 1104 * @param resid The resource ID of a style resource from which to 1105 * obtain attribute values. 1106 * @param force If true, values in the style resource will always be 1107 * used in the theme; otherwise, they will only be used 1108 * if not already defined in the theme. 1109 */ 1110 public void applyStyle(int resid, boolean force) { 1111 AssetManager.applyThemeStyle(mTheme, resid, force); 1112 } 1113 1114 /** 1115 * Set this theme to hold the same contents as the theme 1116 * <var>other</var>. If both of these themes are from the same 1117 * Resources object, they will be identical after this function 1118 * returns. If they are from different Resources, only the resources 1119 * they have in common will be set in this theme. 1120 * 1121 * @param other The existing Theme to copy from. 1122 */ 1123 public void setTo(Theme other) { 1124 AssetManager.copyTheme(mTheme, other.mTheme); 1125 } 1126 1127 /** 1128 * Return a StyledAttributes holding the values defined by 1129 * <var>Theme</var> which are listed in <var>attrs</var>. 1130 * 1131 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1132 * with the array. 1133 * 1134 * @param attrs The desired attributes. 1135 * 1136 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1137 * 1138 * @return Returns a TypedArray holding an array of the attribute values. 1139 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1140 * when done with it. 1141 * 1142 * @see Resources#obtainAttributes 1143 * @see #obtainStyledAttributes(int, int[]) 1144 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1145 */ 1146 public TypedArray obtainStyledAttributes(int[] attrs) { 1147 int len = attrs.length; 1148 TypedArray array = getCachedStyledAttributes(len); 1149 array.mRsrcs = attrs; 1150 AssetManager.applyStyle(mTheme, 0, 0, 0, attrs, 1151 array.mData, array.mIndices); 1152 return array; 1153 } 1154 1155 /** 1156 * Return a StyledAttributes holding the values defined by the style 1157 * resource <var>resid</var> which are listed in <var>attrs</var>. 1158 * 1159 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1160 * with the array. 1161 * 1162 * @param resid The desired style resource. 1163 * @param attrs The desired attributes in the style. 1164 * 1165 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1166 * 1167 * @return Returns a TypedArray holding an array of the attribute values. 1168 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1169 * when done with it. 1170 * 1171 * @see Resources#obtainAttributes 1172 * @see #obtainStyledAttributes(int[]) 1173 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1174 */ 1175 public TypedArray obtainStyledAttributes(int resid, int[] attrs) 1176 throws NotFoundException { 1177 int len = attrs.length; 1178 TypedArray array = getCachedStyledAttributes(len); 1179 array.mRsrcs = attrs; 1180 1181 AssetManager.applyStyle(mTheme, 0, resid, 0, attrs, 1182 array.mData, array.mIndices); 1183 if (false) { 1184 int[] data = array.mData; 1185 1186 System.out.println("**********************************************************"); 1187 System.out.println("**********************************************************"); 1188 System.out.println("**********************************************************"); 1189 System.out.println("Attributes:"); 1190 String s = " Attrs:"; 1191 int i; 1192 for (i=0; i<attrs.length; i++) { 1193 s = s + " 0x" + Integer.toHexString(attrs[i]); 1194 } 1195 System.out.println(s); 1196 s = " Found:"; 1197 TypedValue value = new TypedValue(); 1198 for (i=0; i<attrs.length; i++) { 1199 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1200 value.type = data[d+AssetManager.STYLE_TYPE]; 1201 value.data = data[d+AssetManager.STYLE_DATA]; 1202 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1203 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1204 s = s + " 0x" + Integer.toHexString(attrs[i]) 1205 + "=" + value; 1206 } 1207 System.out.println(s); 1208 } 1209 return array; 1210 } 1211 1212 /** 1213 * Return a StyledAttributes holding the attribute values in 1214 * <var>set</var> 1215 * that are listed in <var>attrs</var>. In addition, if the given 1216 * AttributeSet specifies a style class (through the "style" attribute), 1217 * that style will be applied on top of the base attributes it defines. 1218 * 1219 * <p>Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} when you are done 1220 * with the array. 1221 * 1222 * <p>When determining the final value of a particular attribute, there 1223 * are four inputs that come into play:</p> 1224 * 1225 * <ol> 1226 * <li> Any attribute values in the given AttributeSet. 1227 * <li> The style resource specified in the AttributeSet (named 1228 * "style"). 1229 * <li> The default style specified by <var>defStyleAttr</var> and 1230 * <var>defStyleRes</var> 1231 * <li> The base values in this theme. 1232 * </ol> 1233 * 1234 * <p>Each of these inputs is considered in-order, with the first listed 1235 * taking precedence over the following ones. In other words, if in the 1236 * AttributeSet you have supplied <code><Button 1237 * textColor="#ff000000"></code>, then the button's text will 1238 * <em>always</em> be black, regardless of what is specified in any of 1239 * the styles. 1240 * 1241 * @param set The base set of attribute values. May be null. 1242 * @param attrs The desired attributes to be retrieved. 1243 * @param defStyleAttr An attribute in the current theme that contains a 1244 * reference to a style resource that supplies 1245 * defaults values for the StyledAttributes. Can be 1246 * 0 to not look for defaults. 1247 * @param defStyleRes A resource identifier of a style resource that 1248 * supplies default values for the StyledAttributes, 1249 * used only if defStyleAttr is 0 or can not be found 1250 * in the theme. Can be 0 to not look for defaults. 1251 * 1252 * @return Returns a TypedArray holding an array of the attribute values. 1253 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1254 * when done with it. 1255 * 1256 * @see Resources#obtainAttributes 1257 * @see #obtainStyledAttributes(int[]) 1258 * @see #obtainStyledAttributes(int, int[]) 1259 */ 1260 public TypedArray obtainStyledAttributes(AttributeSet set, 1261 int[] attrs, int defStyleAttr, int defStyleRes) { 1262 int len = attrs.length; 1263 TypedArray array = getCachedStyledAttributes(len); 1264 1265 // XXX note that for now we only work with compiled XML files. 1266 // To support generic XML files we will need to manually parse 1267 // out the attributes from the XML file (applying type information 1268 // contained in the resources and such). 1269 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1270 AssetManager.applyStyle( 1271 mTheme, defStyleAttr, defStyleRes, 1272 parser != null ? parser.mParseState : 0, attrs, 1273 array.mData, array.mIndices); 1274 1275 array.mRsrcs = attrs; 1276 array.mXml = parser; 1277 1278 if (false) { 1279 int[] data = array.mData; 1280 1281 System.out.println("Attributes:"); 1282 String s = " Attrs:"; 1283 int i; 1284 for (i=0; i<set.getAttributeCount(); i++) { 1285 s = s + " " + set.getAttributeName(i); 1286 int id = set.getAttributeNameResource(i); 1287 if (id != 0) { 1288 s = s + "(0x" + Integer.toHexString(id) + ")"; 1289 } 1290 s = s + "=" + set.getAttributeValue(i); 1291 } 1292 System.out.println(s); 1293 s = " Found:"; 1294 TypedValue value = new TypedValue(); 1295 for (i=0; i<attrs.length; i++) { 1296 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1297 value.type = data[d+AssetManager.STYLE_TYPE]; 1298 value.data = data[d+AssetManager.STYLE_DATA]; 1299 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1300 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1301 s = s + " 0x" + Integer.toHexString(attrs[i]) 1302 + "=" + value; 1303 } 1304 System.out.println(s); 1305 } 1306 1307 return array; 1308 } 1309 1310 /** 1311 * Retrieve the value of an attribute in the Theme. The contents of 1312 * <var>outValue</var> are ultimately filled in by 1313 * {@link Resources#getValue}. 1314 * 1315 * @param resid The resource identifier of the desired theme 1316 * attribute. 1317 * @param outValue Filled in with the ultimate resource value supplied 1318 * by the attribute. 1319 * @param resolveRefs If true, resource references will be walked; if 1320 * false, <var>outValue</var> may be a 1321 * TYPE_REFERENCE. In either case, it will never 1322 * be a TYPE_ATTRIBUTE. 1323 * 1324 * @return boolean Returns true if the attribute was found and 1325 * <var>outValue</var> is valid, else false. 1326 */ 1327 public boolean resolveAttribute(int resid, TypedValue outValue, 1328 boolean resolveRefs) { 1329 boolean got = mAssets.getThemeValue(mTheme, resid, outValue, resolveRefs); 1330 if (false) { 1331 System.out.println( 1332 "resolveAttribute #" + Integer.toHexString(resid) 1333 + " got=" + got + ", type=0x" + Integer.toHexString(outValue.type) 1334 + ", data=0x" + Integer.toHexString(outValue.data)); 1335 } 1336 return got; 1337 } 1338 1339 /** 1340 * Print contents of this theme out to the log. For debugging only. 1341 * 1342 * @param priority The log priority to use. 1343 * @param tag The log tag to use. 1344 * @param prefix Text to prefix each line printed. 1345 */ 1346 public void dump(int priority, String tag, String prefix) { 1347 AssetManager.dumpTheme(mTheme, priority, tag, prefix); 1348 } 1349 1350 protected void finalize() throws Throwable { 1351 super.finalize(); 1352 mAssets.releaseTheme(mTheme); 1353 } 1354 1355 /*package*/ Theme() { 1356 mAssets = Resources.this.mAssets; 1357 mTheme = mAssets.createTheme(); 1358 } 1359 1360 private final AssetManager mAssets; 1361 private final int mTheme; 1362 } 1363 1364 /** 1365 * Generate a new Theme object for this set of Resources. It initially 1366 * starts out empty. 1367 * 1368 * @return Theme The newly created Theme container. 1369 */ 1370 public final Theme newTheme() { 1371 return new Theme(); 1372 } 1373 1374 /** 1375 * Retrieve a set of basic attribute values from an AttributeSet, not 1376 * performing styling of them using a theme and/or style resources. 1377 * 1378 * @param set The current attribute values to retrieve. 1379 * @param attrs The specific attributes to be retrieved. 1380 * @return Returns a TypedArray holding an array of the attribute values. 1381 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1382 * when done with it. 1383 * 1384 * @see Theme#obtainStyledAttributes(AttributeSet, int[], int, int) 1385 */ 1386 public TypedArray obtainAttributes(AttributeSet set, int[] attrs) { 1387 int len = attrs.length; 1388 TypedArray array = getCachedStyledAttributes(len); 1389 1390 // XXX note that for now we only work with compiled XML files. 1391 // To support generic XML files we will need to manually parse 1392 // out the attributes from the XML file (applying type information 1393 // contained in the resources and such). 1394 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1395 mAssets.retrieveAttributes(parser.mParseState, attrs, 1396 array.mData, array.mIndices); 1397 1398 array.mRsrcs = attrs; 1399 array.mXml = parser; 1400 1401 return array; 1402 } 1403 1404 /** 1405 * Store the newly updated configuration. 1406 */ 1407 public void updateConfiguration(Configuration config, 1408 DisplayMetrics metrics) { 1409 updateConfiguration(config, metrics, null); 1410 } 1411 1412 /** 1413 * @hide 1414 */ 1415 public void updateConfiguration(Configuration config, 1416 DisplayMetrics metrics, CompatibilityInfo compat) { 1417 synchronized (mTmpValue) { 1418 if (false) { 1419 Slog.i(TAG, "**** Updating config of " + this + ": old config is " 1420 + mConfiguration + " old compat is " + mCompatibilityInfo); 1421 Slog.i(TAG, "**** Updating config of " + this + ": new config is " 1422 + config + " new compat is " + compat); 1423 } 1424 if (compat != null) { 1425 mCompatibilityInfo = compat; 1426 } 1427 if (metrics != null) { 1428 mMetrics.setTo(metrics); 1429 } 1430 // NOTE: We should re-arrange this code to create a Display 1431 // with the CompatibilityInfo that is used everywhere we deal 1432 // with the display in relation to this app, rather than 1433 // doing the conversion here. This impl should be okay because 1434 // we make sure to return a compatible display in the places 1435 // where there are public APIs to retrieve the display... but 1436 // it would be cleaner and more maintainble to just be 1437 // consistently dealing with a compatible display everywhere in 1438 // the framework. 1439 if (mCompatibilityInfo != null) { 1440 mCompatibilityInfo.applyToDisplayMetrics(mMetrics); 1441 } 1442 int configChanges = 0xfffffff; 1443 if (config != null) { 1444 mTmpConfig.setTo(config); 1445 int density = config.densityDpi; 1446 if (density == Configuration.DENSITY_DPI_UNDEFINED) { 1447 density = mMetrics.noncompatDensityDpi; 1448 } 1449 if (mCompatibilityInfo != null) { 1450 mCompatibilityInfo.applyToConfiguration(density, mTmpConfig); 1451 } 1452 if (mTmpConfig.locale == null) { 1453 mTmpConfig.locale = Locale.getDefault(); 1454 mTmpConfig.setLayoutDirection(mTmpConfig.locale); 1455 } 1456 configChanges = mConfiguration.updateFrom(mTmpConfig); 1457 configChanges = ActivityInfo.activityInfoConfigToNative(configChanges); 1458 } 1459 if (mConfiguration.locale == null) { 1460 mConfiguration.locale = Locale.getDefault(); 1461 mConfiguration.setLayoutDirection(mConfiguration.locale); 1462 } 1463 if (mConfiguration.densityDpi != Configuration.DENSITY_DPI_UNDEFINED) { 1464 mMetrics.densityDpi = mConfiguration.densityDpi; 1465 mMetrics.density = mConfiguration.densityDpi * DisplayMetrics.DENSITY_DEFAULT_SCALE; 1466 } 1467 mMetrics.scaledDensity = mMetrics.density * mConfiguration.fontScale; 1468 1469 String locale = null; 1470 if (mConfiguration.locale != null) { 1471 locale = mConfiguration.locale.getLanguage(); 1472 if (mConfiguration.locale.getCountry() != null) { 1473 locale += "-" + mConfiguration.locale.getCountry(); 1474 } 1475 } 1476 int width, height; 1477 if (mMetrics.widthPixels >= mMetrics.heightPixels) { 1478 width = mMetrics.widthPixels; 1479 height = mMetrics.heightPixels; 1480 } else { 1481 //noinspection SuspiciousNameCombination 1482 width = mMetrics.heightPixels; 1483 //noinspection SuspiciousNameCombination 1484 height = mMetrics.widthPixels; 1485 } 1486 int keyboardHidden = mConfiguration.keyboardHidden; 1487 if (keyboardHidden == Configuration.KEYBOARDHIDDEN_NO 1488 && mConfiguration.hardKeyboardHidden 1489 == Configuration.HARDKEYBOARDHIDDEN_YES) { 1490 keyboardHidden = Configuration.KEYBOARDHIDDEN_SOFT; 1491 } 1492 mAssets.setConfiguration(mConfiguration.mcc, mConfiguration.mnc, 1493 locale, mConfiguration.orientation, 1494 mConfiguration.touchscreen, 1495 mConfiguration.densityDpi, mConfiguration.keyboard, 1496 keyboardHidden, mConfiguration.navigation, width, height, 1497 mConfiguration.smallestScreenWidthDp, 1498 mConfiguration.screenWidthDp, mConfiguration.screenHeightDp, 1499 mConfiguration.screenLayout, mConfiguration.uiMode, 1500 Build.VERSION.RESOURCES_SDK_INT); 1501 1502 if (DEBUG_CONFIG) { 1503 Slog.i(TAG, "**** Updating config of " + this + ": final config is " + mConfiguration 1504 + " final compat is " + mCompatibilityInfo); 1505 } 1506 1507 clearDrawableCache(mDrawableCache, configChanges); 1508 clearDrawableCache(mColorDrawableCache, configChanges); 1509 1510 mColorStateListCache.clear(); 1511 1512 flushLayoutCache(); 1513 } 1514 synchronized (mSync) { 1515 if (mPluralRule != null) { 1516 mPluralRule = NativePluralRules.forLocale(config.locale); 1517 } 1518 } 1519 } 1520 1521 private void clearDrawableCache( 1522 LongSparseArray<WeakReference<ConstantState>> cache, 1523 int configChanges) { 1524 int N = cache.size(); 1525 if (DEBUG_CONFIG) { 1526 Log.d(TAG, "Cleaning up drawables config changes: 0x" 1527 + Integer.toHexString(configChanges)); 1528 } 1529 for (int i=0; i<N; i++) { 1530 WeakReference<Drawable.ConstantState> ref = cache.valueAt(i); 1531 if (ref != null) { 1532 Drawable.ConstantState cs = ref.get(); 1533 if (cs != null) { 1534 if (Configuration.needNewResources( 1535 configChanges, cs.getChangingConfigurations())) { 1536 if (DEBUG_CONFIG) { 1537 Log.d(TAG, "FLUSHING #0x" 1538 + Long.toHexString(mDrawableCache.keyAt(i)) 1539 + " / " + cs + " with changes: 0x" 1540 + Integer.toHexString(cs.getChangingConfigurations())); 1541 } 1542 cache.setValueAt(i, null); 1543 } else if (DEBUG_CONFIG) { 1544 Log.d(TAG, "(Keeping #0x" 1545 + Long.toHexString(cache.keyAt(i)) 1546 + " / " + cs + " with changes: 0x" 1547 + Integer.toHexString(cs.getChangingConfigurations()) 1548 + ")"); 1549 } 1550 } 1551 } 1552 } 1553 } 1554 1555 /** 1556 * Update the system resources configuration if they have previously 1557 * been initialized. 1558 * 1559 * @hide 1560 */ 1561 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics, 1562 CompatibilityInfo compat) { 1563 if (mSystem != null) { 1564 mSystem.updateConfiguration(config, metrics, compat); 1565 //Log.i(TAG, "Updated system resources " + mSystem 1566 // + ": " + mSystem.getConfiguration()); 1567 } 1568 } 1569 1570 /** 1571 * @hide 1572 */ 1573 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics) { 1574 updateSystemConfiguration(config, metrics, null); 1575 } 1576 1577 /** 1578 * Return the current display metrics that are in effect for this resource 1579 * object. The returned object should be treated as read-only. 1580 * 1581 * @return The resource's current display metrics. 1582 */ 1583 public DisplayMetrics getDisplayMetrics() { 1584 if (DEBUG_CONFIG) Slog.v(TAG, "Returning DisplayMetrics: " + mMetrics.widthPixels 1585 + "x" + mMetrics.heightPixels + " " + mMetrics.density); 1586 return mMetrics; 1587 } 1588 1589 /** 1590 * Return the current configuration that is in effect for this resource 1591 * object. The returned object should be treated as read-only. 1592 * 1593 * @return The resource's current configuration. 1594 */ 1595 public Configuration getConfiguration() { 1596 return mConfiguration; 1597 } 1598 1599 /** 1600 * Return the compatibility mode information for the application. 1601 * The returned object should be treated as read-only. 1602 * 1603 * @return compatibility info. 1604 * @hide 1605 */ 1606 public CompatibilityInfo getCompatibilityInfo() { 1607 return mCompatibilityInfo != null ? mCompatibilityInfo 1608 : CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 1609 } 1610 1611 /** 1612 * This is just for testing. 1613 * @hide 1614 */ 1615 public void setCompatibilityInfo(CompatibilityInfo ci) { 1616 mCompatibilityInfo = ci; 1617 updateConfiguration(mConfiguration, mMetrics); 1618 } 1619 1620 /** 1621 * Return a resource identifier for the given resource name. A fully 1622 * qualified resource name is of the form "package:type/entry". The first 1623 * two components (package and type) are optional if defType and 1624 * defPackage, respectively, are specified here. 1625 * 1626 * <p>Note: use of this function is discouraged. It is much more 1627 * efficient to retrieve resources by identifier than by name. 1628 * 1629 * @param name The name of the desired resource. 1630 * @param defType Optional default resource type to find, if "type/" is 1631 * not included in the name. Can be null to require an 1632 * explicit type. 1633 * @param defPackage Optional default package to find, if "package:" is 1634 * not included in the name. Can be null to require an 1635 * explicit package. 1636 * 1637 * @return int The associated resource identifier. Returns 0 if no such 1638 * resource was found. (0 is not a valid resource ID.) 1639 */ 1640 public int getIdentifier(String name, String defType, String defPackage) { 1641 try { 1642 return Integer.parseInt(name); 1643 } catch (Exception e) { 1644 // Ignore 1645 } 1646 return mAssets.getResourceIdentifier(name, defType, defPackage); 1647 } 1648 1649 /** 1650 * Return the full name for a given resource identifier. This name is 1651 * a single string of the form "package:type/entry". 1652 * 1653 * @param resid The resource identifier whose name is to be retrieved. 1654 * 1655 * @return A string holding the name of the resource. 1656 * 1657 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1658 * 1659 * @see #getResourcePackageName 1660 * @see #getResourceTypeName 1661 * @see #getResourceEntryName 1662 */ 1663 public String getResourceName(int resid) throws NotFoundException { 1664 String str = mAssets.getResourceName(resid); 1665 if (str != null) return str; 1666 throw new NotFoundException("Unable to find resource ID #0x" 1667 + Integer.toHexString(resid)); 1668 } 1669 1670 /** 1671 * Return the package name for a given resource identifier. 1672 * 1673 * @param resid The resource identifier whose package name is to be 1674 * retrieved. 1675 * 1676 * @return A string holding the package name of the resource. 1677 * 1678 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1679 * 1680 * @see #getResourceName 1681 */ 1682 public String getResourcePackageName(int resid) throws NotFoundException { 1683 String str = mAssets.getResourcePackageName(resid); 1684 if (str != null) return str; 1685 throw new NotFoundException("Unable to find resource ID #0x" 1686 + Integer.toHexString(resid)); 1687 } 1688 1689 /** 1690 * Return the type name for a given resource identifier. 1691 * 1692 * @param resid The resource identifier whose type name is to be 1693 * retrieved. 1694 * 1695 * @return A string holding the type name of the resource. 1696 * 1697 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1698 * 1699 * @see #getResourceName 1700 */ 1701 public String getResourceTypeName(int resid) throws NotFoundException { 1702 String str = mAssets.getResourceTypeName(resid); 1703 if (str != null) return str; 1704 throw new NotFoundException("Unable to find resource ID #0x" 1705 + Integer.toHexString(resid)); 1706 } 1707 1708 /** 1709 * Return the entry name for a given resource identifier. 1710 * 1711 * @param resid The resource identifier whose entry name is to be 1712 * retrieved. 1713 * 1714 * @return A string holding the entry name of the resource. 1715 * 1716 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1717 * 1718 * @see #getResourceName 1719 */ 1720 public String getResourceEntryName(int resid) throws NotFoundException { 1721 String str = mAssets.getResourceEntryName(resid); 1722 if (str != null) return str; 1723 throw new NotFoundException("Unable to find resource ID #0x" 1724 + Integer.toHexString(resid)); 1725 } 1726 1727 /** 1728 * Parse a series of {@link android.R.styleable#Extra <extra>} tags from 1729 * an XML file. You call this when you are at the parent tag of the 1730 * extra tags, and it will return once all of the child tags have been parsed. 1731 * This will call {@link #parseBundleExtra} for each extra tag encountered. 1732 * 1733 * @param parser The parser from which to retrieve the extras. 1734 * @param outBundle A Bundle in which to place all parsed extras. 1735 * @throws XmlPullParserException 1736 * @throws IOException 1737 */ 1738 public void parseBundleExtras(XmlResourceParser parser, Bundle outBundle) 1739 throws XmlPullParserException, IOException { 1740 int outerDepth = parser.getDepth(); 1741 int type; 1742 while ((type=parser.next()) != XmlPullParser.END_DOCUMENT 1743 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 1744 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 1745 continue; 1746 } 1747 1748 String nodeName = parser.getName(); 1749 if (nodeName.equals("extra")) { 1750 parseBundleExtra("extra", parser, outBundle); 1751 XmlUtils.skipCurrentTag(parser); 1752 1753 } else { 1754 XmlUtils.skipCurrentTag(parser); 1755 } 1756 } 1757 } 1758 1759 /** 1760 * Parse a name/value pair out of an XML tag holding that data. The 1761 * AttributeSet must be holding the data defined by 1762 * {@link android.R.styleable#Extra}. The following value types are supported: 1763 * <ul> 1764 * <li> {@link TypedValue#TYPE_STRING}: 1765 * {@link Bundle#putCharSequence Bundle.putCharSequence()} 1766 * <li> {@link TypedValue#TYPE_INT_BOOLEAN}: 1767 * {@link Bundle#putCharSequence Bundle.putBoolean()} 1768 * <li> {@link TypedValue#TYPE_FIRST_INT}-{@link TypedValue#TYPE_LAST_INT}: 1769 * {@link Bundle#putCharSequence Bundle.putBoolean()} 1770 * <li> {@link TypedValue#TYPE_FLOAT}: 1771 * {@link Bundle#putCharSequence Bundle.putFloat()} 1772 * </ul> 1773 * 1774 * @param tagName The name of the tag these attributes come from; this is 1775 * only used for reporting error messages. 1776 * @param attrs The attributes from which to retrieve the name/value pair. 1777 * @param outBundle The Bundle in which to place the parsed value. 1778 * @throws XmlPullParserException If the attributes are not valid. 1779 */ 1780 public void parseBundleExtra(String tagName, AttributeSet attrs, 1781 Bundle outBundle) throws XmlPullParserException { 1782 TypedArray sa = obtainAttributes(attrs, 1783 com.android.internal.R.styleable.Extra); 1784 1785 String name = sa.getString( 1786 com.android.internal.R.styleable.Extra_name); 1787 if (name == null) { 1788 sa.recycle(); 1789 throw new XmlPullParserException("<" + tagName 1790 + "> requires an android:name attribute at " 1791 + attrs.getPositionDescription()); 1792 } 1793 1794 TypedValue v = sa.peekValue( 1795 com.android.internal.R.styleable.Extra_value); 1796 if (v != null) { 1797 if (v.type == TypedValue.TYPE_STRING) { 1798 CharSequence cs = v.coerceToString(); 1799 outBundle.putCharSequence(name, cs); 1800 } else if (v.type == TypedValue.TYPE_INT_BOOLEAN) { 1801 outBundle.putBoolean(name, v.data != 0); 1802 } else if (v.type >= TypedValue.TYPE_FIRST_INT 1803 && v.type <= TypedValue.TYPE_LAST_INT) { 1804 outBundle.putInt(name, v.data); 1805 } else if (v.type == TypedValue.TYPE_FLOAT) { 1806 outBundle.putFloat(name, v.getFloat()); 1807 } else { 1808 sa.recycle(); 1809 throw new XmlPullParserException("<" + tagName 1810 + "> only supports string, integer, float, color, and boolean at " 1811 + attrs.getPositionDescription()); 1812 } 1813 } else { 1814 sa.recycle(); 1815 throw new XmlPullParserException("<" + tagName 1816 + "> requires an android:value or android:resource attribute at " 1817 + attrs.getPositionDescription()); 1818 } 1819 1820 sa.recycle(); 1821 } 1822 1823 /** 1824 * Retrieve underlying AssetManager storage for these resources. 1825 */ 1826 public final AssetManager getAssets() { 1827 return mAssets; 1828 } 1829 1830 /** 1831 * Call this to remove all cached loaded layout resources from the 1832 * Resources object. Only intended for use with performance testing 1833 * tools. 1834 */ 1835 public final void flushLayoutCache() { 1836 synchronized (mCachedXmlBlockIds) { 1837 // First see if this block is in our cache. 1838 final int num = mCachedXmlBlockIds.length; 1839 for (int i=0; i<num; i++) { 1840 mCachedXmlBlockIds[i] = -0; 1841 XmlBlock oldBlock = mCachedXmlBlocks[i]; 1842 if (oldBlock != null) { 1843 oldBlock.close(); 1844 } 1845 mCachedXmlBlocks[i] = null; 1846 } 1847 } 1848 } 1849 1850 /** 1851 * Start preloading of resource data using this Resources object. Only 1852 * for use by the zygote process for loading common system resources. 1853 * {@hide} 1854 */ 1855 public final void startPreloading() { 1856 synchronized (mSync) { 1857 if (sPreloaded) { 1858 throw new IllegalStateException("Resources already preloaded"); 1859 } 1860 sPreloaded = true; 1861 mPreloading = true; 1862 sPreloadedDensity = DisplayMetrics.DENSITY_DEVICE; 1863 mConfiguration.densityDpi = sPreloadedDensity; 1864 updateConfiguration(null, null); 1865 } 1866 } 1867 1868 /** 1869 * Called by zygote when it is done preloading resources, to change back 1870 * to normal Resources operation. 1871 */ 1872 public final void finishPreloading() { 1873 if (mPreloading) { 1874 mPreloading = false; 1875 flushLayoutCache(); 1876 } 1877 } 1878 1879 private boolean verifyPreloadConfig(TypedValue value, String name) { 1880 if ((value.changingConfigurations&~(ActivityInfo.CONFIG_FONT_SCALE 1881 | ActivityInfo.CONFIG_DENSITY)) != 0) { 1882 String resName; 1883 try { 1884 resName = getResourceName(value.resourceId); 1885 } catch (NotFoundException e) { 1886 resName = "?"; 1887 } 1888 Log.w(TAG, "Preloaded " + name + " resource #0x" 1889 + Integer.toHexString(value.resourceId) 1890 + " (" + resName + ") that varies with configuration!!"); 1891 return false; 1892 } 1893 return true; 1894 } 1895 1896 /*package*/ Drawable loadDrawable(TypedValue value, int id) 1897 throws NotFoundException { 1898 1899 if (TRACE_FOR_PRELOAD) { 1900 // Log only framework resources 1901 if ((id >>> 24) == 0x1) { 1902 final String name = getResourceName(id); 1903 if (name != null) android.util.Log.d("PreloadDrawable", name); 1904 } 1905 } 1906 1907 boolean isColorDrawable = false; 1908 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 1909 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 1910 isColorDrawable = true; 1911 } 1912 final long key = isColorDrawable ? value.data : 1913 (((long) value.assetCookie) << 32) | value.data; 1914 1915 Drawable dr = getCachedDrawable(isColorDrawable ? mColorDrawableCache : mDrawableCache, key); 1916 1917 if (dr != null) { 1918 return dr; 1919 } 1920 1921 Drawable.ConstantState cs = isColorDrawable 1922 ? sPreloadedColorDrawables.get(key) 1923 : (sPreloadedDensity == mConfiguration.densityDpi 1924 ? sPreloadedDrawables.get(key) : null); 1925 if (cs != null) { 1926 dr = cs.newDrawable(this); 1927 } else { 1928 if (isColorDrawable) { 1929 dr = new ColorDrawable(value.data); 1930 } 1931 1932 if (dr == null) { 1933 if (value.string == null) { 1934 throw new NotFoundException( 1935 "Resource is not a Drawable (color or path): " + value); 1936 } 1937 1938 String file = value.string.toString(); 1939 1940 if (TRACE_FOR_MISS_PRELOAD) { 1941 // Log only framework resources 1942 if ((id >>> 24) == 0x1) { 1943 final String name = getResourceName(id); 1944 if (name != null) android.util.Log.d(TAG, "Loading framework drawable #" 1945 + Integer.toHexString(id) + ": " + name 1946 + " at " + file); 1947 } 1948 } 1949 1950 if (DEBUG_LOAD) Log.v(TAG, "Loading drawable for cookie " 1951 + value.assetCookie + ": " + file); 1952 1953 if (file.endsWith(".xml")) { 1954 try { 1955 XmlResourceParser rp = loadXmlResourceParser( 1956 file, id, value.assetCookie, "drawable"); 1957 dr = Drawable.createFromXml(this, rp); 1958 rp.close(); 1959 } catch (Exception e) { 1960 NotFoundException rnf = new NotFoundException( 1961 "File " + file + " from drawable resource ID #0x" 1962 + Integer.toHexString(id)); 1963 rnf.initCause(e); 1964 throw rnf; 1965 } 1966 1967 } else { 1968 try { 1969 InputStream is = mAssets.openNonAsset( 1970 value.assetCookie, file, AssetManager.ACCESS_STREAMING); 1971 // System.out.println("Opened file " + file + ": " + is); 1972 dr = Drawable.createFromResourceStream(this, value, is, 1973 file, null); 1974 is.close(); 1975 // System.out.println("Created stream: " + dr); 1976 } catch (Exception e) { 1977 NotFoundException rnf = new NotFoundException( 1978 "File " + file + " from drawable resource ID #0x" 1979 + Integer.toHexString(id)); 1980 rnf.initCause(e); 1981 throw rnf; 1982 } 1983 } 1984 } 1985 } 1986 1987 if (dr != null) { 1988 dr.setChangingConfigurations(value.changingConfigurations); 1989 cs = dr.getConstantState(); 1990 if (cs != null) { 1991 if (mPreloading) { 1992 if (verifyPreloadConfig(value, "drawable")) { 1993 if (isColorDrawable) { 1994 sPreloadedColorDrawables.put(key, cs); 1995 } else { 1996 sPreloadedDrawables.put(key, cs); 1997 } 1998 } 1999 } else { 2000 synchronized (mTmpValue) { 2001 //Log.i(TAG, "Saving cached drawable @ #" + 2002 // Integer.toHexString(key.intValue()) 2003 // + " in " + this + ": " + cs); 2004 if (isColorDrawable) { 2005 mColorDrawableCache.put(key, new WeakReference<Drawable.ConstantState>(cs)); 2006 } else { 2007 mDrawableCache.put(key, new WeakReference<Drawable.ConstantState>(cs)); 2008 } 2009 } 2010 } 2011 } 2012 } 2013 2014 return dr; 2015 } 2016 2017 private Drawable getCachedDrawable( 2018 LongSparseArray<WeakReference<ConstantState>> drawableCache, 2019 long key) { 2020 synchronized (mTmpValue) { 2021 WeakReference<Drawable.ConstantState> wr = drawableCache.get(key); 2022 if (wr != null) { // we have the key 2023 Drawable.ConstantState entry = wr.get(); 2024 if (entry != null) { 2025 //Log.i(TAG, "Returning cached drawable @ #" + 2026 // Integer.toHexString(((Integer)key).intValue()) 2027 // + " in " + this + ": " + entry); 2028 return entry.newDrawable(this); 2029 } 2030 else { // our entry has been purged 2031 drawableCache.delete(key); 2032 } 2033 } 2034 } 2035 return null; 2036 } 2037 2038 /*package*/ ColorStateList loadColorStateList(TypedValue value, int id) 2039 throws NotFoundException { 2040 if (TRACE_FOR_PRELOAD) { 2041 // Log only framework resources 2042 if ((id >>> 24) == 0x1) { 2043 final String name = getResourceName(id); 2044 if (name != null) android.util.Log.d("PreloadColorStateList", name); 2045 } 2046 } 2047 2048 final long key = (((long) value.assetCookie) << 32) | value.data; 2049 2050 ColorStateList csl; 2051 2052 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 2053 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 2054 2055 csl = sPreloadedColorStateLists.get(key); 2056 if (csl != null) { 2057 return csl; 2058 } 2059 2060 csl = ColorStateList.valueOf(value.data); 2061 if (mPreloading) { 2062 if (verifyPreloadConfig(value, "color")) { 2063 sPreloadedColorStateLists.put(key, csl); 2064 } 2065 } 2066 2067 return csl; 2068 } 2069 2070 csl = getCachedColorStateList(key); 2071 if (csl != null) { 2072 return csl; 2073 } 2074 2075 csl = sPreloadedColorStateLists.get(key); 2076 if (csl != null) { 2077 return csl; 2078 } 2079 2080 if (value.string == null) { 2081 throw new NotFoundException( 2082 "Resource is not a ColorStateList (color or path): " + value); 2083 } 2084 2085 String file = value.string.toString(); 2086 2087 if (file.endsWith(".xml")) { 2088 try { 2089 XmlResourceParser rp = loadXmlResourceParser( 2090 file, id, value.assetCookie, "colorstatelist"); 2091 csl = ColorStateList.createFromXml(this, rp); 2092 rp.close(); 2093 } catch (Exception e) { 2094 NotFoundException rnf = new NotFoundException( 2095 "File " + file + " from color state list resource ID #0x" 2096 + Integer.toHexString(id)); 2097 rnf.initCause(e); 2098 throw rnf; 2099 } 2100 } else { 2101 throw new NotFoundException( 2102 "File " + file + " from drawable resource ID #0x" 2103 + Integer.toHexString(id) + ": .xml extension required"); 2104 } 2105 2106 if (csl != null) { 2107 if (mPreloading) { 2108 if (verifyPreloadConfig(value, "color")) { 2109 sPreloadedColorStateLists.put(key, csl); 2110 } 2111 } else { 2112 synchronized (mTmpValue) { 2113 //Log.i(TAG, "Saving cached color state list @ #" + 2114 // Integer.toHexString(key.intValue()) 2115 // + " in " + this + ": " + csl); 2116 mColorStateListCache.put(key, new WeakReference<ColorStateList>(csl)); 2117 } 2118 } 2119 } 2120 2121 return csl; 2122 } 2123 2124 private ColorStateList getCachedColorStateList(long key) { 2125 synchronized (mTmpValue) { 2126 WeakReference<ColorStateList> wr = mColorStateListCache.get(key); 2127 if (wr != null) { // we have the key 2128 ColorStateList entry = wr.get(); 2129 if (entry != null) { 2130 //Log.i(TAG, "Returning cached color state list @ #" + 2131 // Integer.toHexString(((Integer)key).intValue()) 2132 // + " in " + this + ": " + entry); 2133 return entry; 2134 } else { // our entry has been purged 2135 mColorStateListCache.delete(key); 2136 } 2137 } 2138 } 2139 return null; 2140 } 2141 2142 /*package*/ XmlResourceParser loadXmlResourceParser(int id, String type) 2143 throws NotFoundException { 2144 synchronized (mTmpValue) { 2145 TypedValue value = mTmpValue; 2146 getValue(id, value, true); 2147 if (value.type == TypedValue.TYPE_STRING) { 2148 return loadXmlResourceParser(value.string.toString(), id, 2149 value.assetCookie, type); 2150 } 2151 throw new NotFoundException( 2152 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 2153 + Integer.toHexString(value.type) + " is not valid"); 2154 } 2155 } 2156 2157 /*package*/ XmlResourceParser loadXmlResourceParser(String file, int id, 2158 int assetCookie, String type) throws NotFoundException { 2159 if (id != 0) { 2160 try { 2161 // These may be compiled... 2162 synchronized (mCachedXmlBlockIds) { 2163 // First see if this block is in our cache. 2164 final int num = mCachedXmlBlockIds.length; 2165 for (int i=0; i<num; i++) { 2166 if (mCachedXmlBlockIds[i] == id) { 2167 //System.out.println("**** REUSING XML BLOCK! id=" 2168 // + id + ", index=" + i); 2169 return mCachedXmlBlocks[i].newParser(); 2170 } 2171 } 2172 2173 // Not in the cache, create a new block and put it at 2174 // the next slot in the cache. 2175 XmlBlock block = mAssets.openXmlBlockAsset( 2176 assetCookie, file); 2177 if (block != null) { 2178 int pos = mLastCachedXmlBlockIndex+1; 2179 if (pos >= num) pos = 0; 2180 mLastCachedXmlBlockIndex = pos; 2181 XmlBlock oldBlock = mCachedXmlBlocks[pos]; 2182 if (oldBlock != null) { 2183 oldBlock.close(); 2184 } 2185 mCachedXmlBlockIds[pos] = id; 2186 mCachedXmlBlocks[pos] = block; 2187 //System.out.println("**** CACHING NEW XML BLOCK! id=" 2188 // + id + ", index=" + pos); 2189 return block.newParser(); 2190 } 2191 } 2192 } catch (Exception e) { 2193 NotFoundException rnf = new NotFoundException( 2194 "File " + file + " from xml type " + type + " resource ID #0x" 2195 + Integer.toHexString(id)); 2196 rnf.initCause(e); 2197 throw rnf; 2198 } 2199 } 2200 2201 throw new NotFoundException( 2202 "File " + file + " from xml type " + type + " resource ID #0x" 2203 + Integer.toHexString(id)); 2204 } 2205 2206 private TypedArray getCachedStyledAttributes(int len) { 2207 synchronized (mTmpValue) { 2208 TypedArray attrs = mCachedStyledAttributes; 2209 if (attrs != null) { 2210 mCachedStyledAttributes = null; 2211 if (DEBUG_ATTRIBUTES_CACHE) { 2212 mLastRetrievedAttrs = new RuntimeException("here"); 2213 mLastRetrievedAttrs.fillInStackTrace(); 2214 } 2215 2216 attrs.mLength = len; 2217 int fullLen = len * AssetManager.STYLE_NUM_ENTRIES; 2218 if (attrs.mData.length >= fullLen) { 2219 return attrs; 2220 } 2221 attrs.mData = new int[fullLen]; 2222 attrs.mIndices = new int[1+len]; 2223 return attrs; 2224 } 2225 if (DEBUG_ATTRIBUTES_CACHE) { 2226 RuntimeException here = new RuntimeException("here"); 2227 here.fillInStackTrace(); 2228 if (mLastRetrievedAttrs != null) { 2229 Log.i(TAG, "Allocated new TypedArray of " + len + " in " + this, here); 2230 Log.i(TAG, "Last retrieved attributes here", mLastRetrievedAttrs); 2231 } 2232 mLastRetrievedAttrs = here; 2233 } 2234 return new TypedArray(this, 2235 new int[len*AssetManager.STYLE_NUM_ENTRIES], 2236 new int[1+len], len); 2237 } 2238 } 2239 2240 private Resources() { 2241 mAssets = AssetManager.getSystem(); 2242 // NOTE: Intentionally leaving this uninitialized (all values set 2243 // to zero), so that anyone who tries to do something that requires 2244 // metrics will get a very wrong value. 2245 mConfiguration.setToDefaults(); 2246 mMetrics.setToDefaults(); 2247 updateConfiguration(null, null); 2248 mAssets.ensureStringBlocks(); 2249 mCompatibilityInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 2250 } 2251} 2252