Resources.java revision bf4564f03daf9a43bafae8cbfe6c3cecd60847f0
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.content.res; 18 19import com.android.internal.util.XmlUtils; 20 21import org.xmlpull.v1.XmlPullParser; 22import org.xmlpull.v1.XmlPullParserException; 23 24import android.graphics.Movie; 25import android.graphics.drawable.Drawable; 26import android.graphics.drawable.ColorDrawable; 27import android.graphics.drawable.Drawable.ConstantState; 28import android.os.Build; 29import android.os.Bundle; 30import android.os.SystemProperties; 31import android.util.AttributeSet; 32import android.util.DisplayMetrics; 33import android.util.Log; 34import android.util.SparseArray; 35import android.util.TypedValue; 36import android.util.LongSparseArray; 37import android.view.Display; 38 39import java.io.IOException; 40import java.io.InputStream; 41import java.lang.ref.WeakReference; 42import java.util.Locale; 43 44import libcore.icu.NativePluralRules; 45 46/** 47 * Class for accessing an application's resources. This sits on top of the 48 * asset manager of the application (accessible through getAssets()) and 49 * provides a higher-level API for getting typed data from the assets. 50 */ 51public class Resources { 52 static final String TAG = "Resources"; 53 private static final boolean DEBUG_LOAD = false; 54 private static final boolean DEBUG_CONFIG = false; 55 private static final boolean TRACE_FOR_PRELOAD = false; 56 57 private static final int ID_OTHER = 0x01000004; 58 59 // Use the current SDK version code. If we are a development build, 60 // also allow the previous SDK version + 1. 61 private static final int sSdkVersion = Build.VERSION.SDK_INT 62 + ("REL".equals(Build.VERSION.CODENAME) ? 0 : 1); 63 private static final Object mSync = new Object(); 64 private static Resources mSystem = null; 65 66 // Information about preloaded resources. Note that they are not 67 // protected by a lock, because while preloading in zygote we are all 68 // single-threaded, and after that these are immutable. 69 private static final LongSparseArray<Drawable.ConstantState> sPreloadedDrawables 70 = new LongSparseArray<Drawable.ConstantState>(); 71 private static final SparseArray<ColorStateList> mPreloadedColorStateLists 72 = new SparseArray<ColorStateList>(); 73 private static final LongSparseArray<Drawable.ConstantState> sPreloadedColorDrawables 74 = new LongSparseArray<Drawable.ConstantState>(); 75 private static boolean mPreloaded; 76 77 /*package*/ final TypedValue mTmpValue = new TypedValue(); 78 79 // These are protected by the mTmpValue lock. 80 private final LongSparseArray<WeakReference<Drawable.ConstantState> > mDrawableCache 81 = new LongSparseArray<WeakReference<Drawable.ConstantState> >(); 82 private final SparseArray<WeakReference<ColorStateList> > mColorStateListCache 83 = new SparseArray<WeakReference<ColorStateList> >(); 84 private final LongSparseArray<WeakReference<Drawable.ConstantState> > mColorDrawableCache 85 = new LongSparseArray<WeakReference<Drawable.ConstantState> >(); 86 private boolean mPreloading; 87 88 /*package*/ TypedArray mCachedStyledAttributes = null; 89 90 private int mLastCachedXmlBlockIndex = -1; 91 private final int[] mCachedXmlBlockIds = { 0, 0, 0, 0 }; 92 private final XmlBlock[] mCachedXmlBlocks = new XmlBlock[4]; 93 94 /*package*/ final AssetManager mAssets; 95 private final Configuration mConfiguration = new Configuration(); 96 /*package*/ final DisplayMetrics mMetrics = new DisplayMetrics(); 97 private NativePluralRules mPluralRule; 98 99 private CompatibilityInfo mCompatibilityInfo; 100 private Display mDefaultDisplay; 101 102 private static final LongSparseArray<Object> EMPTY_ARRAY = new LongSparseArray<Object>() { 103 @Override 104 public void put(long k, Object o) { 105 throw new UnsupportedOperationException(); 106 } 107 @Override 108 public void append(long k, Object o) { 109 throw new UnsupportedOperationException(); 110 } 111 }; 112 113 @SuppressWarnings("unchecked") 114 private static <T> LongSparseArray<T> emptySparseArray() { 115 return (LongSparseArray<T>) EMPTY_ARRAY; 116 } 117 118 /** 119 * This exception is thrown by the resource APIs when a requested resource 120 * can not be found. 121 */ 122 public static class NotFoundException extends RuntimeException { 123 public NotFoundException() { 124 } 125 126 public NotFoundException(String name) { 127 super(name); 128 } 129 } 130 131 /** 132 * Create a new Resources object on top of an existing set of assets in an 133 * AssetManager. 134 * 135 * @param assets Previously created AssetManager. 136 * @param metrics Current display metrics to consider when 137 * selecting/computing resource values. 138 * @param config Desired device configuration to consider when 139 * selecting/computing resource values (optional). 140 */ 141 public Resources(AssetManager assets, DisplayMetrics metrics, 142 Configuration config) { 143 this(assets, metrics, config, (CompatibilityInfo) null); 144 } 145 146 /** 147 * Creates a new Resources object with CompatibilityInfo. 148 * 149 * @param assets Previously created AssetManager. 150 * @param metrics Current display metrics to consider when 151 * selecting/computing resource values. 152 * @param config Desired device configuration to consider when 153 * selecting/computing resource values (optional). 154 * @param compInfo this resource's compatibility info. It will use the default compatibility 155 * info when it's null. 156 * @hide 157 */ 158 public Resources(AssetManager assets, DisplayMetrics metrics, 159 Configuration config, CompatibilityInfo compInfo) { 160 mAssets = assets; 161 mMetrics.setToDefaults(); 162 if (compInfo == null) { 163 mCompatibilityInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 164 } else { 165 mCompatibilityInfo = compInfo; 166 } 167 updateConfiguration(config, metrics); 168 assets.ensureStringBlocks(); 169 } 170 171 /** 172 * Return a global shared Resources object that provides access to only 173 * system resources (no application resources), and is not configured for 174 * the current screen (can not use dimension units, does not change based 175 * on orientation, etc). 176 */ 177 public static Resources getSystem() { 178 synchronized (mSync) { 179 Resources ret = mSystem; 180 if (ret == null) { 181 ret = new Resources(); 182 mSystem = ret; 183 } 184 185 return ret; 186 } 187 } 188 189 /** 190 * Return the string value associated with a particular resource ID. The 191 * returned object will be a String if this is a plain string; it will be 192 * some other type of CharSequence if it is styled. 193 * {@more} 194 * 195 * @param id The desired resource identifier, as generated by the aapt 196 * tool. This integer encodes the package, type, and resource 197 * entry. The value 0 is an invalid identifier. 198 * 199 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 200 * 201 * @return CharSequence The string data associated with the resource, plus 202 * possibly styled text information. 203 */ 204 public CharSequence getText(int id) throws NotFoundException { 205 CharSequence res = mAssets.getResourceText(id); 206 if (res != null) { 207 return res; 208 } 209 throw new NotFoundException("String resource ID #0x" 210 + Integer.toHexString(id)); 211 } 212 213 /** 214 * Return the character sequence associated with a particular resource ID for a particular 215 * numerical quantity. 216 * 217 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 218 * Resources</a> for more on quantity strings. 219 * 220 * @param id The desired resource identifier, as generated by the aapt 221 * tool. This integer encodes the package, type, and resource 222 * entry. The value 0 is an invalid identifier. 223 * @param quantity The number used to get the correct string for the current language's 224 * plural rules. 225 * 226 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 227 * 228 * @return CharSequence The string data associated with the resource, plus 229 * possibly styled text information. 230 */ 231 public CharSequence getQuantityText(int id, int quantity) throws NotFoundException { 232 NativePluralRules rule = getPluralRule(); 233 CharSequence res = mAssets.getResourceBagText(id, 234 attrForQuantityCode(rule.quantityForInt(quantity))); 235 if (res != null) { 236 return res; 237 } 238 res = mAssets.getResourceBagText(id, ID_OTHER); 239 if (res != null) { 240 return res; 241 } 242 throw new NotFoundException("Plural resource ID #0x" + Integer.toHexString(id) 243 + " quantity=" + quantity 244 + " item=" + stringForQuantityCode(rule.quantityForInt(quantity))); 245 } 246 247 private NativePluralRules getPluralRule() { 248 synchronized (mSync) { 249 if (mPluralRule == null) { 250 mPluralRule = NativePluralRules.forLocale(mConfiguration.locale); 251 } 252 return mPluralRule; 253 } 254 } 255 256 private static int attrForQuantityCode(int quantityCode) { 257 switch (quantityCode) { 258 case NativePluralRules.ZERO: return 0x01000005; 259 case NativePluralRules.ONE: return 0x01000006; 260 case NativePluralRules.TWO: return 0x01000007; 261 case NativePluralRules.FEW: return 0x01000008; 262 case NativePluralRules.MANY: return 0x01000009; 263 default: return ID_OTHER; 264 } 265 } 266 267 private static String stringForQuantityCode(int quantityCode) { 268 switch (quantityCode) { 269 case NativePluralRules.ZERO: return "zero"; 270 case NativePluralRules.ONE: return "one"; 271 case NativePluralRules.TWO: return "two"; 272 case NativePluralRules.FEW: return "few"; 273 case NativePluralRules.MANY: return "many"; 274 default: return "other"; 275 } 276 } 277 278 /** 279 * Return the string value associated with a particular resource ID. It 280 * will be stripped of any styled text information. 281 * {@more} 282 * 283 * @param id The desired resource identifier, as generated by the aapt 284 * tool. This integer encodes the package, type, and resource 285 * entry. The value 0 is an invalid identifier. 286 * 287 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 288 * 289 * @return String The string data associated with the resource, 290 * stripped of styled text information. 291 */ 292 public String getString(int id) throws NotFoundException { 293 CharSequence res = getText(id); 294 if (res != null) { 295 return res.toString(); 296 } 297 throw new NotFoundException("String resource ID #0x" 298 + Integer.toHexString(id)); 299 } 300 301 302 /** 303 * Return the string value associated with a particular resource ID, 304 * substituting the format arguments as defined in {@link java.util.Formatter} 305 * and {@link java.lang.String#format}. It will be stripped of any styled text 306 * information. 307 * {@more} 308 * 309 * @param id The desired resource identifier, as generated by the aapt 310 * tool. This integer encodes the package, type, and resource 311 * entry. The value 0 is an invalid identifier. 312 * 313 * @param formatArgs The format arguments that will be used for substitution. 314 * 315 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 316 * 317 * @return String The string data associated with the resource, 318 * stripped of styled text information. 319 */ 320 public String getString(int id, Object... formatArgs) throws NotFoundException { 321 String raw = getString(id); 322 return String.format(mConfiguration.locale, raw, formatArgs); 323 } 324 325 /** 326 * Return the string value associated with a particular resource ID for a particular 327 * numerical quantity, substituting the format arguments as defined in 328 * {@link java.util.Formatter} and {@link java.lang.String#format}. It will be 329 * stripped of any styled text information. 330 * {@more} 331 * 332 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 333 * Resources</a> for more on quantity strings. 334 * 335 * @param id The desired resource identifier, as generated by the aapt 336 * tool. This integer encodes the package, type, and resource 337 * entry. The value 0 is an invalid identifier. 338 * @param quantity The number used to get the correct string for the current language's 339 * plural rules. 340 * @param formatArgs The format arguments that will be used for substitution. 341 * 342 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 343 * 344 * @return String The string data associated with the resource, 345 * stripped of styled text information. 346 */ 347 public String getQuantityString(int id, int quantity, Object... formatArgs) 348 throws NotFoundException { 349 String raw = getQuantityText(id, quantity).toString(); 350 return String.format(mConfiguration.locale, raw, formatArgs); 351 } 352 353 /** 354 * Return the string value associated with a particular resource ID for a particular 355 * numerical quantity. 356 * 357 * <p>See <a href="{@docRoot}guide/topics/resources/string-resource.html#Plurals">String 358 * Resources</a> for more on quantity strings. 359 * 360 * @param id The desired resource identifier, as generated by the aapt 361 * tool. This integer encodes the package, type, and resource 362 * entry. The value 0 is an invalid identifier. 363 * @param quantity The number used to get the correct string for the current language's 364 * plural rules. 365 * 366 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 367 * 368 * @return String The string data associated with the resource, 369 * stripped of styled text information. 370 */ 371 public String getQuantityString(int id, int quantity) throws NotFoundException { 372 return getQuantityText(id, quantity).toString(); 373 } 374 375 /** 376 * Return the string value associated with a particular resource ID. The 377 * returned object will be a String if this is a plain string; it will be 378 * some other type of CharSequence if it is styled. 379 * 380 * @param id The desired resource identifier, as generated by the aapt 381 * tool. This integer encodes the package, type, and resource 382 * entry. The value 0 is an invalid identifier. 383 * 384 * @param def The default CharSequence to return. 385 * 386 * @return CharSequence The string data associated with the resource, plus 387 * possibly styled text information, or def if id is 0 or not found. 388 */ 389 public CharSequence getText(int id, CharSequence def) { 390 CharSequence res = id != 0 ? mAssets.getResourceText(id) : null; 391 return res != null ? res : def; 392 } 393 394 /** 395 * Return the styled text array associated with a particular resource ID. 396 * 397 * @param id The desired resource identifier, as generated by the aapt 398 * tool. This integer encodes the package, type, and resource 399 * entry. The value 0 is an invalid identifier. 400 * 401 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 402 * 403 * @return The styled text array associated with the resource. 404 */ 405 public CharSequence[] getTextArray(int id) throws NotFoundException { 406 CharSequence[] res = mAssets.getResourceTextArray(id); 407 if (res != null) { 408 return res; 409 } 410 throw new NotFoundException("Text array resource ID #0x" 411 + Integer.toHexString(id)); 412 } 413 414 /** 415 * Return the string array associated with a particular resource ID. 416 * 417 * @param id The desired resource identifier, as generated by the aapt 418 * tool. This integer encodes the package, type, and resource 419 * entry. The value 0 is an invalid identifier. 420 * 421 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 422 * 423 * @return The string array associated with the resource. 424 */ 425 public String[] getStringArray(int id) throws NotFoundException { 426 String[] res = mAssets.getResourceStringArray(id); 427 if (res != null) { 428 return res; 429 } 430 throw new NotFoundException("String array resource ID #0x" 431 + Integer.toHexString(id)); 432 } 433 434 /** 435 * Return the int array associated with a particular resource ID. 436 * 437 * @param id The desired resource identifier, as generated by the aapt 438 * tool. This integer encodes the package, type, and resource 439 * entry. The value 0 is an invalid identifier. 440 * 441 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 442 * 443 * @return The int array associated with the resource. 444 */ 445 public int[] getIntArray(int id) throws NotFoundException { 446 int[] res = mAssets.getArrayIntResource(id); 447 if (res != null) { 448 return res; 449 } 450 throw new NotFoundException("Int array resource ID #0x" 451 + Integer.toHexString(id)); 452 } 453 454 /** 455 * Return an array of heterogeneous values. 456 * 457 * @param id The desired resource identifier, as generated by the aapt 458 * tool. This integer encodes the package, type, and resource 459 * entry. The value 0 is an invalid identifier. 460 * 461 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 462 * 463 * @return Returns a TypedArray holding an array of the array values. 464 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 465 * when done with it. 466 */ 467 public TypedArray obtainTypedArray(int id) throws NotFoundException { 468 int len = mAssets.getArraySize(id); 469 if (len < 0) { 470 throw new NotFoundException("Array resource ID #0x" 471 + Integer.toHexString(id)); 472 } 473 474 TypedArray array = getCachedStyledAttributes(len); 475 array.mLength = mAssets.retrieveArray(id, array.mData); 476 array.mIndices[0] = 0; 477 478 return array; 479 } 480 481 /** 482 * Retrieve a dimensional for a particular resource ID. Unit 483 * conversions are based on the current {@link DisplayMetrics} associated 484 * with the resources. 485 * 486 * @param id The desired resource identifier, as generated by the aapt 487 * tool. This integer encodes the package, type, and resource 488 * entry. The value 0 is an invalid identifier. 489 * 490 * @return Resource dimension value multiplied by the appropriate 491 * metric. 492 * 493 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 494 * 495 * @see #getDimensionPixelOffset 496 * @see #getDimensionPixelSize 497 */ 498 public float getDimension(int id) throws NotFoundException { 499 synchronized (mTmpValue) { 500 TypedValue value = mTmpValue; 501 getValue(id, value, true); 502 if (value.type == TypedValue.TYPE_DIMENSION) { 503 return TypedValue.complexToDimension(value.data, mMetrics); 504 } 505 throw new NotFoundException( 506 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 507 + Integer.toHexString(value.type) + " is not valid"); 508 } 509 } 510 511 /** 512 * Retrieve a dimensional for a particular resource ID for use 513 * as an offset in raw pixels. This is the same as 514 * {@link #getDimension}, except the returned value is converted to 515 * integer pixels for you. An offset conversion involves simply 516 * truncating the base value to an integer. 517 * 518 * @param id The desired resource identifier, as generated by the aapt 519 * tool. This integer encodes the package, type, and resource 520 * entry. The value 0 is an invalid identifier. 521 * 522 * @return Resource dimension value multiplied by the appropriate 523 * metric and truncated to integer pixels. 524 * 525 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 526 * 527 * @see #getDimension 528 * @see #getDimensionPixelSize 529 */ 530 public int getDimensionPixelOffset(int id) throws NotFoundException { 531 synchronized (mTmpValue) { 532 TypedValue value = mTmpValue; 533 getValue(id, value, true); 534 if (value.type == TypedValue.TYPE_DIMENSION) { 535 return TypedValue.complexToDimensionPixelOffset( 536 value.data, mMetrics); 537 } 538 throw new NotFoundException( 539 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 540 + Integer.toHexString(value.type) + " is not valid"); 541 } 542 } 543 544 /** 545 * Retrieve a dimensional for a particular resource ID for use 546 * as a size in raw pixels. This is the same as 547 * {@link #getDimension}, except the returned value is converted to 548 * integer pixels for use as a size. A size conversion involves 549 * rounding the base value, and ensuring that a non-zero base value 550 * is at least one pixel in size. 551 * 552 * @param id The desired resource identifier, as generated by the aapt 553 * tool. This integer encodes the package, type, and resource 554 * entry. The value 0 is an invalid identifier. 555 * 556 * @return Resource dimension value multiplied by the appropriate 557 * metric and truncated to integer pixels. 558 * 559 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 560 * 561 * @see #getDimension 562 * @see #getDimensionPixelOffset 563 */ 564 public int getDimensionPixelSize(int id) throws NotFoundException { 565 synchronized (mTmpValue) { 566 TypedValue value = mTmpValue; 567 getValue(id, value, true); 568 if (value.type == TypedValue.TYPE_DIMENSION) { 569 return TypedValue.complexToDimensionPixelSize( 570 value.data, mMetrics); 571 } 572 throw new NotFoundException( 573 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 574 + Integer.toHexString(value.type) + " is not valid"); 575 } 576 } 577 578 /** 579 * Retrieve a fractional unit for a particular resource ID. 580 * 581 * @param id The desired resource identifier, as generated by the aapt 582 * tool. This integer encodes the package, type, and resource 583 * entry. The value 0 is an invalid identifier. 584 * @param base The base value of this fraction. In other words, a 585 * standard fraction is multiplied by this value. 586 * @param pbase The parent base value of this fraction. In other 587 * words, a parent fraction (nn%p) is multiplied by this 588 * value. 589 * 590 * @return Attribute fractional value multiplied by the appropriate 591 * base value. 592 * 593 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 594 */ 595 public float getFraction(int id, int base, int pbase) { 596 synchronized (mTmpValue) { 597 TypedValue value = mTmpValue; 598 getValue(id, value, true); 599 if (value.type == TypedValue.TYPE_FRACTION) { 600 return TypedValue.complexToFraction(value.data, base, pbase); 601 } 602 throw new NotFoundException( 603 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 604 + Integer.toHexString(value.type) + " is not valid"); 605 } 606 } 607 608 /** 609 * Return a drawable object associated with a particular resource ID. 610 * Various types of objects will be returned depending on the underlying 611 * resource -- for example, a solid color, PNG image, scalable image, etc. 612 * The Drawable API hides these implementation details. 613 * 614 * @param id The desired resource identifier, as generated by the aapt 615 * tool. This integer encodes the package, type, and resource 616 * entry. The value 0 is an invalid identifier. 617 * 618 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 619 * 620 * @return Drawable An object that can be used to draw this resource. 621 */ 622 public Drawable getDrawable(int id) throws NotFoundException { 623 synchronized (mTmpValue) { 624 TypedValue value = mTmpValue; 625 getValue(id, value, true); 626 return loadDrawable(value, id); 627 } 628 } 629 630 /** 631 * Return a movie object associated with the particular resource ID. 632 * @param id The desired resource identifier, as generated by the aapt 633 * tool. This integer encodes the package, type, and resource 634 * entry. The value 0 is an invalid identifier. 635 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 636 * 637 */ 638 public Movie getMovie(int id) throws NotFoundException { 639 InputStream is = openRawResource(id); 640 Movie movie = Movie.decodeStream(is); 641 try { 642 is.close(); 643 } 644 catch (java.io.IOException e) { 645 // don't care, since the return value is valid 646 } 647 return movie; 648 } 649 650 /** 651 * Return a color integer associated with a particular resource ID. 652 * If the resource holds a complex 653 * {@link android.content.res.ColorStateList}, then the default color from 654 * the set is returned. 655 * 656 * @param id The desired resource identifier, as generated by the aapt 657 * tool. This integer encodes the package, type, and resource 658 * entry. The value 0 is an invalid identifier. 659 * 660 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 661 * 662 * @return Returns a single color value in the form 0xAARRGGBB. 663 */ 664 public int getColor(int id) throws NotFoundException { 665 synchronized (mTmpValue) { 666 TypedValue value = mTmpValue; 667 getValue(id, value, true); 668 if (value.type >= TypedValue.TYPE_FIRST_INT 669 && value.type <= TypedValue.TYPE_LAST_INT) { 670 return value.data; 671 } else if (value.type == TypedValue.TYPE_STRING) { 672 ColorStateList csl = loadColorStateList(mTmpValue, id); 673 return csl.getDefaultColor(); 674 } 675 throw new NotFoundException( 676 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 677 + Integer.toHexString(value.type) + " is not valid"); 678 } 679 } 680 681 /** 682 * Return a color state list associated with a particular resource ID. The 683 * resource may contain either a single raw color value, or a complex 684 * {@link android.content.res.ColorStateList} holding multiple possible colors. 685 * 686 * @param id The desired resource identifier of a {@link ColorStateList}, 687 * as generated by the aapt tool. This integer encodes the package, type, and resource 688 * entry. The value 0 is an invalid identifier. 689 * 690 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 691 * 692 * @return Returns a ColorStateList object containing either a single 693 * solid color or multiple colors that can be selected based on a state. 694 */ 695 public ColorStateList getColorStateList(int id) throws NotFoundException { 696 synchronized (mTmpValue) { 697 TypedValue value = mTmpValue; 698 getValue(id, value, true); 699 return loadColorStateList(value, id); 700 } 701 } 702 703 /** 704 * Return a boolean associated with a particular resource ID. This can be 705 * used with any integral resource value, and will return true if it is 706 * non-zero. 707 * 708 * @param id The desired resource identifier, as generated by the aapt 709 * tool. This integer encodes the package, type, and resource 710 * entry. The value 0 is an invalid identifier. 711 * 712 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 713 * 714 * @return Returns the boolean value contained in the resource. 715 */ 716 public boolean getBoolean(int id) throws NotFoundException { 717 synchronized (mTmpValue) { 718 TypedValue value = mTmpValue; 719 getValue(id, value, true); 720 if (value.type >= TypedValue.TYPE_FIRST_INT 721 && value.type <= TypedValue.TYPE_LAST_INT) { 722 return value.data != 0; 723 } 724 throw new NotFoundException( 725 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 726 + Integer.toHexString(value.type) + " is not valid"); 727 } 728 } 729 730 /** 731 * Return an integer associated with a particular resource ID. 732 * 733 * @param id The desired resource identifier, as generated by the aapt 734 * tool. This integer encodes the package, type, and resource 735 * entry. The value 0 is an invalid identifier. 736 * 737 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 738 * 739 * @return Returns the integer value contained in the resource. 740 */ 741 public int getInteger(int id) throws NotFoundException { 742 synchronized (mTmpValue) { 743 TypedValue value = mTmpValue; 744 getValue(id, value, true); 745 if (value.type >= TypedValue.TYPE_FIRST_INT 746 && value.type <= TypedValue.TYPE_LAST_INT) { 747 return value.data; 748 } 749 throw new NotFoundException( 750 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 751 + Integer.toHexString(value.type) + " is not valid"); 752 } 753 } 754 755 /** 756 * Return an XmlResourceParser through which you can read a view layout 757 * description for the given resource ID. This parser has limited 758 * functionality -- in particular, you can't change its input, and only 759 * the high-level events are available. 760 * 761 * <p>This function is really a simple wrapper for calling 762 * {@link #getXml} with a layout resource. 763 * 764 * @param id The desired resource identifier, as generated by the aapt 765 * tool. This integer encodes the package, type, and resource 766 * entry. The value 0 is an invalid identifier. 767 * 768 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 769 * 770 * @return A new parser object through which you can read 771 * the XML data. 772 * 773 * @see #getXml 774 */ 775 public XmlResourceParser getLayout(int id) throws NotFoundException { 776 return loadXmlResourceParser(id, "layout"); 777 } 778 779 /** 780 * Return an XmlResourceParser through which you can read an animation 781 * description for the given resource ID. This parser has limited 782 * functionality -- in particular, you can't change its input, and only 783 * the high-level events are available. 784 * 785 * <p>This function is really a simple wrapper for calling 786 * {@link #getXml} with an animation resource. 787 * 788 * @param id The desired resource identifier, as generated by the aapt 789 * tool. This integer encodes the package, type, and resource 790 * entry. The value 0 is an invalid identifier. 791 * 792 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 793 * 794 * @return A new parser object through which you can read 795 * the XML data. 796 * 797 * @see #getXml 798 */ 799 public XmlResourceParser getAnimation(int id) throws NotFoundException { 800 return loadXmlResourceParser(id, "anim"); 801 } 802 803 /** 804 * Return an XmlResourceParser through which you can read a generic XML 805 * resource for the given resource ID. 806 * 807 * <p>The XmlPullParser implementation returned here has some limited 808 * functionality. In particular, you can't change its input, and only 809 * high-level parsing events are available (since the document was 810 * pre-parsed for you at build time, which involved merging text and 811 * stripping comments). 812 * 813 * @param id The desired resource identifier, as generated by the aapt 814 * tool. This integer encodes the package, type, and resource 815 * entry. The value 0 is an invalid identifier. 816 * 817 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 818 * 819 * @return A new parser object through which you can read 820 * the XML data. 821 * 822 * @see android.util.AttributeSet 823 */ 824 public XmlResourceParser getXml(int id) throws NotFoundException { 825 return loadXmlResourceParser(id, "xml"); 826 } 827 828 /** 829 * Open a data stream for reading a raw resource. This can only be used 830 * with resources whose value is the name of an asset files -- that is, it can be 831 * used to open drawable, sound, and raw resources; it will fail on string 832 * and color resources. 833 * 834 * @param id The resource identifier to open, as generated by the appt 835 * tool. 836 * 837 * @return InputStream Access to the resource data. 838 * 839 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 840 * 841 */ 842 public InputStream openRawResource(int id) throws NotFoundException { 843 synchronized (mTmpValue) { 844 return openRawResource(id, mTmpValue); 845 } 846 } 847 848 /** 849 * Open a data stream for reading a raw resource. This can only be used 850 * with resources whose value is the name of an asset file -- that is, it can be 851 * used to open drawable, sound, and raw resources; it will fail on string 852 * and color resources. 853 * 854 * @param id The resource identifier to open, as generated by the appt tool. 855 * @param value The TypedValue object to hold the resource information. 856 * 857 * @return InputStream Access to the resource data. 858 * 859 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 860 */ 861 public InputStream openRawResource(int id, TypedValue value) throws NotFoundException { 862 getValue(id, value, true); 863 864 try { 865 return mAssets.openNonAsset(value.assetCookie, value.string.toString(), 866 AssetManager.ACCESS_STREAMING); 867 } catch (Exception e) { 868 NotFoundException rnf = new NotFoundException("File " + value.string.toString() + 869 " from drawable resource ID #0x" + Integer.toHexString(id)); 870 rnf.initCause(e); 871 throw rnf; 872 } 873 } 874 875 /** 876 * Open a file descriptor for reading a raw resource. This can only be used 877 * with resources whose value is the name of an asset files -- that is, it can be 878 * used to open drawable, sound, and raw resources; it will fail on string 879 * and color resources. 880 * 881 * <p>This function only works for resources that are stored in the package 882 * as uncompressed data, which typically includes things like mp3 files 883 * and png images. 884 * 885 * @param id The resource identifier to open, as generated by the appt 886 * tool. 887 * 888 * @return AssetFileDescriptor A new file descriptor you can use to read 889 * the resource. This includes the file descriptor itself, as well as the 890 * offset and length of data where the resource appears in the file. A 891 * null is returned if the file exists but is compressed. 892 * 893 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 894 * 895 */ 896 public AssetFileDescriptor openRawResourceFd(int id) throws NotFoundException { 897 synchronized (mTmpValue) { 898 TypedValue value = mTmpValue; 899 getValue(id, value, true); 900 901 try { 902 return mAssets.openNonAssetFd( 903 value.assetCookie, value.string.toString()); 904 } catch (Exception e) { 905 NotFoundException rnf = new NotFoundException( 906 "File " + value.string.toString() 907 + " from drawable resource ID #0x" 908 + Integer.toHexString(id)); 909 rnf.initCause(e); 910 throw rnf; 911 } 912 913 } 914 } 915 916 /** 917 * Return the raw data associated with a particular resource ID. 918 * 919 * @param id The desired resource identifier, as generated by the aapt 920 * tool. This integer encodes the package, type, and resource 921 * entry. The value 0 is an invalid identifier. 922 * @param outValue Object in which to place the resource data. 923 * @param resolveRefs If true, a resource that is a reference to another 924 * resource will be followed so that you receive the 925 * actual final resource data. If false, the TypedValue 926 * will be filled in with the reference itself. 927 * 928 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 929 * 930 */ 931 public void getValue(int id, TypedValue outValue, boolean resolveRefs) 932 throws NotFoundException { 933 boolean found = mAssets.getResourceValue(id, outValue, resolveRefs); 934 if (found) { 935 return; 936 } 937 throw new NotFoundException("Resource ID #0x" 938 + Integer.toHexString(id)); 939 } 940 941 /** 942 * Return the raw data associated with a particular resource ID. 943 * See getIdentifier() for information on how names are mapped to resource 944 * IDs, and getString(int) for information on how string resources are 945 * retrieved. 946 * 947 * <p>Note: use of this function is discouraged. It is much more 948 * efficient to retrieve resources by identifier than by name. 949 * 950 * @param name The name of the desired resource. This is passed to 951 * getIdentifier() with a default type of "string". 952 * @param outValue Object in which to place the resource data. 953 * @param resolveRefs If true, a resource that is a reference to another 954 * resource will be followed so that you receive the 955 * actual final resource data. If false, the TypedValue 956 * will be filled in with the reference itself. 957 * 958 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 959 * 960 */ 961 public void getValue(String name, TypedValue outValue, boolean resolveRefs) 962 throws NotFoundException { 963 int id = getIdentifier(name, "string", null); 964 if (id != 0) { 965 getValue(id, outValue, resolveRefs); 966 return; 967 } 968 throw new NotFoundException("String resource name " + name); 969 } 970 971 /** 972 * This class holds the current attribute values for a particular theme. 973 * In other words, a Theme is a set of values for resource attributes; 974 * these are used in conjunction with {@link TypedArray} 975 * to resolve the final value for an attribute. 976 * 977 * <p>The Theme's attributes come into play in two ways: (1) a styled 978 * attribute can explicit reference a value in the theme through the 979 * "?themeAttribute" syntax; (2) if no value has been defined for a 980 * particular styled attribute, as a last resort we will try to find that 981 * attribute's value in the Theme. 982 * 983 * <p>You will normally use the {@link #obtainStyledAttributes} APIs to 984 * retrieve XML attributes with style and theme information applied. 985 */ 986 public final class Theme { 987 /** 988 * Place new attribute values into the theme. The style resource 989 * specified by <var>resid</var> will be retrieved from this Theme's 990 * resources, its values placed into the Theme object. 991 * 992 * <p>The semantics of this function depends on the <var>force</var> 993 * argument: If false, only values that are not already defined in 994 * the theme will be copied from the system resource; otherwise, if 995 * any of the style's attributes are already defined in the theme, the 996 * current values in the theme will be overwritten. 997 * 998 * @param resid The resource ID of a style resource from which to 999 * obtain attribute values. 1000 * @param force If true, values in the style resource will always be 1001 * used in the theme; otherwise, they will only be used 1002 * if not already defined in the theme. 1003 */ 1004 public void applyStyle(int resid, boolean force) { 1005 AssetManager.applyThemeStyle(mTheme, resid, force); 1006 } 1007 1008 /** 1009 * Set this theme to hold the same contents as the theme 1010 * <var>other</var>. If both of these themes are from the same 1011 * Resources object, they will be identical after this function 1012 * returns. If they are from different Resources, only the resources 1013 * they have in common will be set in this theme. 1014 * 1015 * @param other The existing Theme to copy from. 1016 */ 1017 public void setTo(Theme other) { 1018 AssetManager.copyTheme(mTheme, other.mTheme); 1019 } 1020 1021 /** 1022 * Return a StyledAttributes holding the values defined by 1023 * <var>Theme</var> which are listed in <var>attrs</var>. 1024 * 1025 * <p>Be sure to call StyledAttributes.recycle() when you are done with 1026 * the array. 1027 * 1028 * @param attrs The desired attributes. 1029 * 1030 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1031 * 1032 * @return Returns a TypedArray holding an array of the attribute values. 1033 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1034 * when done with it. 1035 * 1036 * @see Resources#obtainAttributes 1037 * @see #obtainStyledAttributes(int, int[]) 1038 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1039 */ 1040 public TypedArray obtainStyledAttributes(int[] attrs) { 1041 int len = attrs.length; 1042 TypedArray array = getCachedStyledAttributes(len); 1043 array.mRsrcs = attrs; 1044 AssetManager.applyStyle(mTheme, 0, 0, 0, attrs, 1045 array.mData, array.mIndices); 1046 return array; 1047 } 1048 1049 /** 1050 * Return a StyledAttributes holding the values defined by the style 1051 * resource <var>resid</var> which are listed in <var>attrs</var>. 1052 * 1053 * <p>Be sure to call StyledAttributes.recycle() when you are done with 1054 * the array. 1055 * 1056 * @param resid The desired style resource. 1057 * @param attrs The desired attributes in the style. 1058 * 1059 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1060 * 1061 * @return Returns a TypedArray holding an array of the attribute values. 1062 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1063 * when done with it. 1064 * 1065 * @see Resources#obtainAttributes 1066 * @see #obtainStyledAttributes(int[]) 1067 * @see #obtainStyledAttributes(AttributeSet, int[], int, int) 1068 */ 1069 public TypedArray obtainStyledAttributes(int resid, int[] attrs) 1070 throws NotFoundException { 1071 int len = attrs.length; 1072 TypedArray array = getCachedStyledAttributes(len); 1073 array.mRsrcs = attrs; 1074 1075 AssetManager.applyStyle(mTheme, 0, resid, 0, attrs, 1076 array.mData, array.mIndices); 1077 if (false) { 1078 int[] data = array.mData; 1079 1080 System.out.println("**********************************************************"); 1081 System.out.println("**********************************************************"); 1082 System.out.println("**********************************************************"); 1083 System.out.println("Attributes:"); 1084 String s = " Attrs:"; 1085 int i; 1086 for (i=0; i<attrs.length; i++) { 1087 s = s + " 0x" + Integer.toHexString(attrs[i]); 1088 } 1089 System.out.println(s); 1090 s = " Found:"; 1091 TypedValue value = new TypedValue(); 1092 for (i=0; i<attrs.length; i++) { 1093 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1094 value.type = data[d+AssetManager.STYLE_TYPE]; 1095 value.data = data[d+AssetManager.STYLE_DATA]; 1096 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1097 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1098 s = s + " 0x" + Integer.toHexString(attrs[i]) 1099 + "=" + value; 1100 } 1101 System.out.println(s); 1102 } 1103 return array; 1104 } 1105 1106 /** 1107 * Return a StyledAttributes holding the attribute values in 1108 * <var>set</var> 1109 * that are listed in <var>attrs</var>. In addition, if the given 1110 * AttributeSet specifies a style class (through the "style" attribute), 1111 * that style will be applied on top of the base attributes it defines. 1112 * 1113 * <p>Be sure to call StyledAttributes.recycle() when you are done with 1114 * the array. 1115 * 1116 * <p>When determining the final value of a particular attribute, there 1117 * are four inputs that come into play:</p> 1118 * 1119 * <ol> 1120 * <li> Any attribute values in the given AttributeSet. 1121 * <li> The style resource specified in the AttributeSet (named 1122 * "style"). 1123 * <li> The default style specified by <var>defStyleAttr</var> and 1124 * <var>defStyleRes</var> 1125 * <li> The base values in this theme. 1126 * </ol> 1127 * 1128 * <p>Each of these inputs is considered in-order, with the first listed 1129 * taking precedence over the following ones. In other words, if in the 1130 * AttributeSet you have supplied <code><Button 1131 * textColor="#ff000000"></code>, then the button's text will 1132 * <em>always</em> be black, regardless of what is specified in any of 1133 * the styles. 1134 * 1135 * @param set The base set of attribute values. May be null. 1136 * @param attrs The desired attributes to be retrieved. 1137 * @param defStyleAttr An attribute in the current theme that contains a 1138 * reference to a style resource that supplies 1139 * defaults values for the StyledAttributes. Can be 1140 * 0 to not look for defaults. 1141 * @param defStyleRes A resource identifier of a style resource that 1142 * supplies default values for the StyledAttributes, 1143 * used only if defStyleAttr is 0 or can not be found 1144 * in the theme. Can be 0 to not look for defaults. 1145 * 1146 * @return Returns a TypedArray holding an array of the attribute values. 1147 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1148 * when done with it. 1149 * 1150 * @see Resources#obtainAttributes 1151 * @see #obtainStyledAttributes(int[]) 1152 * @see #obtainStyledAttributes(int, int[]) 1153 */ 1154 public TypedArray obtainStyledAttributes(AttributeSet set, 1155 int[] attrs, int defStyleAttr, int defStyleRes) { 1156 int len = attrs.length; 1157 TypedArray array = getCachedStyledAttributes(len); 1158 1159 // XXX note that for now we only work with compiled XML files. 1160 // To support generic XML files we will need to manually parse 1161 // out the attributes from the XML file (applying type information 1162 // contained in the resources and such). 1163 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1164 AssetManager.applyStyle( 1165 mTheme, defStyleAttr, defStyleRes, 1166 parser != null ? parser.mParseState : 0, attrs, 1167 array.mData, array.mIndices); 1168 1169 array.mRsrcs = attrs; 1170 array.mXml = parser; 1171 1172 if (false) { 1173 int[] data = array.mData; 1174 1175 System.out.println("Attributes:"); 1176 String s = " Attrs:"; 1177 int i; 1178 for (i=0; i<set.getAttributeCount(); i++) { 1179 s = s + " " + set.getAttributeName(i); 1180 int id = set.getAttributeNameResource(i); 1181 if (id != 0) { 1182 s = s + "(0x" + Integer.toHexString(id) + ")"; 1183 } 1184 s = s + "=" + set.getAttributeValue(i); 1185 } 1186 System.out.println(s); 1187 s = " Found:"; 1188 TypedValue value = new TypedValue(); 1189 for (i=0; i<attrs.length; i++) { 1190 int d = i*AssetManager.STYLE_NUM_ENTRIES; 1191 value.type = data[d+AssetManager.STYLE_TYPE]; 1192 value.data = data[d+AssetManager.STYLE_DATA]; 1193 value.assetCookie = data[d+AssetManager.STYLE_ASSET_COOKIE]; 1194 value.resourceId = data[d+AssetManager.STYLE_RESOURCE_ID]; 1195 s = s + " 0x" + Integer.toHexString(attrs[i]) 1196 + "=" + value; 1197 } 1198 System.out.println(s); 1199 } 1200 1201 return array; 1202 } 1203 1204 /** 1205 * Retrieve the value of an attribute in the Theme. The contents of 1206 * <var>outValue</var> are ultimately filled in by 1207 * {@link Resources#getValue}. 1208 * 1209 * @param resid The resource identifier of the desired theme 1210 * attribute. 1211 * @param outValue Filled in with the ultimate resource value supplied 1212 * by the attribute. 1213 * @param resolveRefs If true, resource references will be walked; if 1214 * false, <var>outValue</var> may be a 1215 * TYPE_REFERENCE. In either case, it will never 1216 * be a TYPE_ATTRIBUTE. 1217 * 1218 * @return boolean Returns true if the attribute was found and 1219 * <var>outValue</var> is valid, else false. 1220 */ 1221 public boolean resolveAttribute(int resid, TypedValue outValue, 1222 boolean resolveRefs) { 1223 boolean got = mAssets.getThemeValue(mTheme, resid, outValue, resolveRefs); 1224 if (false) { 1225 System.out.println( 1226 "resolveAttribute #" + Integer.toHexString(resid) 1227 + " got=" + got + ", type=0x" + Integer.toHexString(outValue.type) 1228 + ", data=0x" + Integer.toHexString(outValue.data)); 1229 } 1230 return got; 1231 } 1232 1233 /** 1234 * Print contents of this theme out to the log. For debugging only. 1235 * 1236 * @param priority The log priority to use. 1237 * @param tag The log tag to use. 1238 * @param prefix Text to prefix each line printed. 1239 */ 1240 public void dump(int priority, String tag, String prefix) { 1241 AssetManager.dumpTheme(mTheme, priority, tag, prefix); 1242 } 1243 1244 protected void finalize() throws Throwable { 1245 super.finalize(); 1246 mAssets.releaseTheme(mTheme); 1247 } 1248 1249 /*package*/ Theme() { 1250 mAssets = Resources.this.mAssets; 1251 mTheme = mAssets.createTheme(); 1252 } 1253 1254 private final AssetManager mAssets; 1255 private final int mTheme; 1256 } 1257 1258 /** 1259 * Generate a new Theme object for this set of Resources. It initially 1260 * starts out empty. 1261 * 1262 * @return Theme The newly created Theme container. 1263 */ 1264 public final Theme newTheme() { 1265 return new Theme(); 1266 } 1267 1268 /** 1269 * Retrieve a set of basic attribute values from an AttributeSet, not 1270 * performing styling of them using a theme and/or style resources. 1271 * 1272 * @param set The current attribute values to retrieve. 1273 * @param attrs The specific attributes to be retrieved. 1274 * @return Returns a TypedArray holding an array of the attribute values. 1275 * Be sure to call {@link TypedArray#recycle() TypedArray.recycle()} 1276 * when done with it. 1277 * 1278 * @see Theme#obtainStyledAttributes(AttributeSet, int[], int, int) 1279 */ 1280 public TypedArray obtainAttributes(AttributeSet set, int[] attrs) { 1281 int len = attrs.length; 1282 TypedArray array = getCachedStyledAttributes(len); 1283 1284 // XXX note that for now we only work with compiled XML files. 1285 // To support generic XML files we will need to manually parse 1286 // out the attributes from the XML file (applying type information 1287 // contained in the resources and such). 1288 XmlBlock.Parser parser = (XmlBlock.Parser)set; 1289 mAssets.retrieveAttributes(parser.mParseState, attrs, 1290 array.mData, array.mIndices); 1291 1292 array.mRsrcs = attrs; 1293 array.mXml = parser; 1294 1295 return array; 1296 } 1297 1298 /** 1299 * Store the newly updated configuration. 1300 */ 1301 public void updateConfiguration(Configuration config, 1302 DisplayMetrics metrics) { 1303 synchronized (mTmpValue) { 1304 int configChanges = 0xfffffff; 1305 if (config != null) { 1306 configChanges = mConfiguration.updateFrom(config); 1307 } 1308 if (mConfiguration.locale == null) { 1309 mConfiguration.locale = Locale.getDefault(); 1310 } 1311 if (metrics != null) { 1312 mMetrics.setTo(metrics); 1313 mMetrics.updateMetrics(mCompatibilityInfo, 1314 mConfiguration.orientation, mConfiguration.screenLayout); 1315 } 1316 mMetrics.scaledDensity = mMetrics.density * mConfiguration.fontScale; 1317 1318 String locale = null; 1319 if (mConfiguration.locale != null) { 1320 locale = mConfiguration.locale.getLanguage(); 1321 if (mConfiguration.locale.getCountry() != null) { 1322 locale += "-" + mConfiguration.locale.getCountry(); 1323 } 1324 } 1325 int width, height; 1326 if (mMetrics.widthPixels >= mMetrics.heightPixels) { 1327 width = mMetrics.widthPixels; 1328 height = mMetrics.heightPixels; 1329 } else { 1330 //noinspection SuspiciousNameCombination 1331 width = mMetrics.heightPixels; 1332 //noinspection SuspiciousNameCombination 1333 height = mMetrics.widthPixels; 1334 } 1335 int keyboardHidden = mConfiguration.keyboardHidden; 1336 if (keyboardHidden == Configuration.HARDKEYBOARDHIDDEN_NO 1337 && mConfiguration.hardKeyboardHidden 1338 == Configuration.HARDKEYBOARDHIDDEN_YES) { 1339 keyboardHidden = Configuration.KEYBOARDHIDDEN_SOFT; 1340 } 1341 mAssets.setConfiguration(mConfiguration.mcc, mConfiguration.mnc, 1342 locale, mConfiguration.orientation, 1343 mConfiguration.touchscreen, 1344 (int)(mMetrics.density*160), mConfiguration.keyboard, 1345 keyboardHidden, mConfiguration.navigation, width, height, 1346 mConfiguration.screenLayout, mConfiguration.uiMode, sSdkVersion); 1347 1348 drawableCacheClear(mDrawableCache, configChanges); 1349 drawableCacheClear(mColorDrawableCache, configChanges); 1350 1351 mColorStateListCache.clear(); 1352 1353 1354 flushLayoutCache(); 1355 } 1356 synchronized (mSync) { 1357 if (mPluralRule != null) { 1358 mPluralRule = NativePluralRules.forLocale(config.locale); 1359 } 1360 } 1361 } 1362 1363 private void drawableCacheClear( 1364 LongSparseArray<WeakReference<ConstantState>> cache, 1365 int configChanges) { 1366 int N = cache.size(); 1367 if (DEBUG_CONFIG) { 1368 Log.d(TAG, "Cleaning up drawables config changes: 0x" 1369 + Integer.toHexString(configChanges)); 1370 } 1371 for (int i=0; i<N; i++) { 1372 WeakReference<Drawable.ConstantState> ref = cache.valueAt(i); 1373 if (ref != null) { 1374 Drawable.ConstantState cs = ref.get(); 1375 if (cs != null) { 1376 if (Configuration.needNewResources( 1377 configChanges, cs.getChangingConfigurations())) { 1378 if (DEBUG_CONFIG) { 1379 Log.d(TAG, "FLUSHING #0x" 1380 + Long.toHexString(mDrawableCache.keyAt(i)) 1381 + " / " + cs + " with changes: 0x" 1382 + Integer.toHexString(cs.getChangingConfigurations())); 1383 } 1384 cache.setValueAt(i, null); 1385 } else if (DEBUG_CONFIG) { 1386 Log.d(TAG, "(Keeping #0x" 1387 + Long.toHexString(cache.keyAt(i)) 1388 + " / " + cs + " with changes: 0x" 1389 + Integer.toHexString(cs.getChangingConfigurations()) 1390 + ")"); 1391 } 1392 } 1393 } 1394 } 1395 cache.clear(); 1396 } 1397 1398 /** 1399 * Update the system resources configuration if they have previously 1400 * been initialized. 1401 * 1402 * @hide 1403 */ 1404 public static void updateSystemConfiguration(Configuration config, DisplayMetrics metrics) { 1405 if (mSystem != null) { 1406 mSystem.updateConfiguration(config, metrics); 1407 //Log.i(TAG, "Updated system resources " + mSystem 1408 // + ": " + mSystem.getConfiguration()); 1409 } 1410 } 1411 1412 /** 1413 * Return the current display metrics that are in effect for this resource 1414 * object. The returned object should be treated as read-only. 1415 * 1416 * @return The resource's current display metrics. 1417 */ 1418 public DisplayMetrics getDisplayMetrics() { 1419 return mMetrics; 1420 } 1421 1422 /** 1423 * Return the current configuration that is in effect for this resource 1424 * object. The returned object should be treated as read-only. 1425 * 1426 * @return The resource's current configuration. 1427 */ 1428 public Configuration getConfiguration() { 1429 return mConfiguration; 1430 } 1431 1432 /** 1433 * Return the compatibility mode information for the application. 1434 * The returned object should be treated as read-only. 1435 * 1436 * @return compatibility info. null if the app does not require compatibility mode. 1437 * @hide 1438 */ 1439 public CompatibilityInfo getCompatibilityInfo() { 1440 return mCompatibilityInfo; 1441 } 1442 1443 /** 1444 * This is just for testing. 1445 * @hide 1446 */ 1447 public void setCompatibilityInfo(CompatibilityInfo ci) { 1448 mCompatibilityInfo = ci; 1449 updateConfiguration(mConfiguration, mMetrics); 1450 } 1451 1452 /** 1453 * Return a resource identifier for the given resource name. A fully 1454 * qualified resource name is of the form "package:type/entry". The first 1455 * two components (package and type) are optional if defType and 1456 * defPackage, respectively, are specified here. 1457 * 1458 * <p>Note: use of this function is discouraged. It is much more 1459 * efficient to retrieve resources by identifier than by name. 1460 * 1461 * @param name The name of the desired resource. 1462 * @param defType Optional default resource type to find, if "type/" is 1463 * not included in the name. Can be null to require an 1464 * explicit type. 1465 * @param defPackage Optional default package to find, if "package:" is 1466 * not included in the name. Can be null to require an 1467 * explicit package. 1468 * 1469 * @return int The associated resource identifier. Returns 0 if no such 1470 * resource was found. (0 is not a valid resource ID.) 1471 */ 1472 public int getIdentifier(String name, String defType, String defPackage) { 1473 try { 1474 return Integer.parseInt(name); 1475 } catch (Exception e) { 1476 // Ignore 1477 } 1478 return mAssets.getResourceIdentifier(name, defType, defPackage); 1479 } 1480 1481 /** 1482 * Return the full name for a given resource identifier. This name is 1483 * a single string of the form "package:type/entry". 1484 * 1485 * @param resid The resource identifier whose name is to be retrieved. 1486 * 1487 * @return A string holding the name of the resource. 1488 * 1489 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1490 * 1491 * @see #getResourcePackageName 1492 * @see #getResourceTypeName 1493 * @see #getResourceEntryName 1494 */ 1495 public String getResourceName(int resid) throws NotFoundException { 1496 String str = mAssets.getResourceName(resid); 1497 if (str != null) return str; 1498 throw new NotFoundException("Unable to find resource ID #0x" 1499 + Integer.toHexString(resid)); 1500 } 1501 1502 /** 1503 * Return the package name for a given resource identifier. 1504 * 1505 * @param resid The resource identifier whose package name is to be 1506 * retrieved. 1507 * 1508 * @return A string holding the package name of the resource. 1509 * 1510 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1511 * 1512 * @see #getResourceName 1513 */ 1514 public String getResourcePackageName(int resid) throws NotFoundException { 1515 String str = mAssets.getResourcePackageName(resid); 1516 if (str != null) return str; 1517 throw new NotFoundException("Unable to find resource ID #0x" 1518 + Integer.toHexString(resid)); 1519 } 1520 1521 /** 1522 * Return the type name for a given resource identifier. 1523 * 1524 * @param resid The resource identifier whose type name is to be 1525 * retrieved. 1526 * 1527 * @return A string holding the type name of the resource. 1528 * 1529 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1530 * 1531 * @see #getResourceName 1532 */ 1533 public String getResourceTypeName(int resid) throws NotFoundException { 1534 String str = mAssets.getResourceTypeName(resid); 1535 if (str != null) return str; 1536 throw new NotFoundException("Unable to find resource ID #0x" 1537 + Integer.toHexString(resid)); 1538 } 1539 1540 /** 1541 * Return the entry name for a given resource identifier. 1542 * 1543 * @param resid The resource identifier whose entry name is to be 1544 * retrieved. 1545 * 1546 * @return A string holding the entry name of the resource. 1547 * 1548 * @throws NotFoundException Throws NotFoundException if the given ID does not exist. 1549 * 1550 * @see #getResourceName 1551 */ 1552 public String getResourceEntryName(int resid) throws NotFoundException { 1553 String str = mAssets.getResourceEntryName(resid); 1554 if (str != null) return str; 1555 throw new NotFoundException("Unable to find resource ID #0x" 1556 + Integer.toHexString(resid)); 1557 } 1558 1559 /** 1560 * Parse a series of {@link android.R.styleable#Extra <extra>} tags from 1561 * an XML file. You call this when you are at the parent tag of the 1562 * extra tags, and it return once all of the child tags have been parsed. 1563 * This will call {@link #parseBundleExtra} for each extra tag encountered. 1564 * 1565 * @param parser The parser from which to retrieve the extras. 1566 * @param outBundle A Bundle in which to place all parsed extras. 1567 * @throws XmlPullParserException 1568 * @throws IOException 1569 */ 1570 public void parseBundleExtras(XmlResourceParser parser, Bundle outBundle) 1571 throws XmlPullParserException, IOException { 1572 int outerDepth = parser.getDepth(); 1573 int type; 1574 while ((type=parser.next()) != XmlPullParser.END_DOCUMENT 1575 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 1576 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 1577 continue; 1578 } 1579 1580 String nodeName = parser.getName(); 1581 if (nodeName.equals("extra")) { 1582 parseBundleExtra("extra", parser, outBundle); 1583 XmlUtils.skipCurrentTag(parser); 1584 1585 } else { 1586 XmlUtils.skipCurrentTag(parser); 1587 } 1588 } 1589 } 1590 1591 /** 1592 * Parse a name/value pair out of an XML tag holding that data. The 1593 * AttributeSet must be holding the data defined by 1594 * {@link android.R.styleable#Extra}. The following value types are supported: 1595 * <ul> 1596 * <li> {@link TypedValue#TYPE_STRING}: 1597 * {@link Bundle#putCharSequence Bundle.putCharSequence()} 1598 * <li> {@link TypedValue#TYPE_INT_BOOLEAN}: 1599 * {@link Bundle#putCharSequence Bundle.putBoolean()} 1600 * <li> {@link TypedValue#TYPE_FIRST_INT}-{@link TypedValue#TYPE_LAST_INT}: 1601 * {@link Bundle#putCharSequence Bundle.putBoolean()} 1602 * <li> {@link TypedValue#TYPE_FLOAT}: 1603 * {@link Bundle#putCharSequence Bundle.putFloat()} 1604 * </ul> 1605 * 1606 * @param tagName The name of the tag these attributes come from; this is 1607 * only used for reporting error messages. 1608 * @param attrs The attributes from which to retrieve the name/value pair. 1609 * @param outBundle The Bundle in which to place the parsed value. 1610 * @throws XmlPullParserException If the attributes are not valid. 1611 */ 1612 public void parseBundleExtra(String tagName, AttributeSet attrs, 1613 Bundle outBundle) throws XmlPullParserException { 1614 TypedArray sa = obtainAttributes(attrs, 1615 com.android.internal.R.styleable.Extra); 1616 1617 String name = sa.getString( 1618 com.android.internal.R.styleable.Extra_name); 1619 if (name == null) { 1620 sa.recycle(); 1621 throw new XmlPullParserException("<" + tagName 1622 + "> requires an android:name attribute at " 1623 + attrs.getPositionDescription()); 1624 } 1625 1626 TypedValue v = sa.peekValue( 1627 com.android.internal.R.styleable.Extra_value); 1628 if (v != null) { 1629 if (v.type == TypedValue.TYPE_STRING) { 1630 CharSequence cs = v.coerceToString(); 1631 outBundle.putCharSequence(name, cs); 1632 } else if (v.type == TypedValue.TYPE_INT_BOOLEAN) { 1633 outBundle.putBoolean(name, v.data != 0); 1634 } else if (v.type >= TypedValue.TYPE_FIRST_INT 1635 && v.type <= TypedValue.TYPE_LAST_INT) { 1636 outBundle.putInt(name, v.data); 1637 } else if (v.type == TypedValue.TYPE_FLOAT) { 1638 outBundle.putFloat(name, v.getFloat()); 1639 } else { 1640 sa.recycle(); 1641 throw new XmlPullParserException("<" + tagName 1642 + "> only supports string, integer, float, color, and boolean at " 1643 + attrs.getPositionDescription()); 1644 } 1645 } else { 1646 sa.recycle(); 1647 throw new XmlPullParserException("<" + tagName 1648 + "> requires an android:value or android:resource attribute at " 1649 + attrs.getPositionDescription()); 1650 } 1651 1652 sa.recycle(); 1653 } 1654 1655 /** 1656 * Retrieve underlying AssetManager storage for these resources. 1657 */ 1658 public final AssetManager getAssets() { 1659 return mAssets; 1660 } 1661 1662 /** 1663 * Call this to remove all cached loaded layout resources from the 1664 * Resources object. Only intended for use with performance testing 1665 * tools. 1666 */ 1667 public final void flushLayoutCache() { 1668 synchronized (mCachedXmlBlockIds) { 1669 // First see if this block is in our cache. 1670 final int num = mCachedXmlBlockIds.length; 1671 for (int i=0; i<num; i++) { 1672 mCachedXmlBlockIds[i] = -0; 1673 XmlBlock oldBlock = mCachedXmlBlocks[i]; 1674 if (oldBlock != null) { 1675 oldBlock.close(); 1676 } 1677 mCachedXmlBlocks[i] = null; 1678 } 1679 } 1680 } 1681 1682 /** 1683 * Start preloading of resource data using this Resources object. Only 1684 * for use by the zygote process for loading common system resources. 1685 * {@hide} 1686 */ 1687 public final void startPreloading() { 1688 synchronized (mSync) { 1689 if (mPreloaded) { 1690 throw new IllegalStateException("Resources already preloaded"); 1691 } 1692 mPreloaded = true; 1693 mPreloading = true; 1694 } 1695 } 1696 1697 /** 1698 * Called by zygote when it is done preloading resources, to change back 1699 * to normal Resources operation. 1700 */ 1701 public final void finishPreloading() { 1702 if (mPreloading) { 1703 mPreloading = false; 1704 flushLayoutCache(); 1705 } 1706 } 1707 1708 /*package*/ Drawable loadDrawable(TypedValue value, int id) 1709 throws NotFoundException { 1710 1711 if (TRACE_FOR_PRELOAD) { 1712 // Log only framework resources 1713 if ((id >>> 24) == 0x1) { 1714 final String name = getResourceName(id); 1715 if (name != null) android.util.Log.d("PreloadDrawable", name); 1716 } 1717 } 1718 1719 final long key = (((long) value.assetCookie) << 32) | value.data; 1720 boolean isColorDrawable = false; 1721 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 1722 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 1723 isColorDrawable = true; 1724 } 1725 Drawable dr = getCachedDrawable(isColorDrawable ? mColorDrawableCache : mDrawableCache, key); 1726 1727 if (dr != null) { 1728 return dr; 1729 } 1730 1731 Drawable.ConstantState cs = isColorDrawable ? sPreloadedColorDrawables.get(key) : sPreloadedDrawables.get(key); 1732 if (cs != null) { 1733 dr = cs.newDrawable(this); 1734 } else { 1735 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 1736 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 1737 dr = new ColorDrawable(value.data); 1738 } 1739 1740 if (dr == null) { 1741 if (value.string == null) { 1742 throw new NotFoundException( 1743 "Resource is not a Drawable (color or path): " + value); 1744 } 1745 1746 String file = value.string.toString(); 1747 1748 if (DEBUG_LOAD) Log.v(TAG, "Loading drawable for cookie " 1749 + value.assetCookie + ": " + file); 1750 1751 if (file.endsWith(".xml")) { 1752 try { 1753 XmlResourceParser rp = loadXmlResourceParser( 1754 file, id, value.assetCookie, "drawable"); 1755 dr = Drawable.createFromXml(this, rp); 1756 rp.close(); 1757 } catch (Exception e) { 1758 NotFoundException rnf = new NotFoundException( 1759 "File " + file + " from drawable resource ID #0x" 1760 + Integer.toHexString(id)); 1761 rnf.initCause(e); 1762 throw rnf; 1763 } 1764 1765 } else { 1766 try { 1767 InputStream is = mAssets.openNonAsset( 1768 value.assetCookie, file, AssetManager.ACCESS_STREAMING); 1769 // System.out.println("Opened file " + file + ": " + is); 1770 dr = Drawable.createFromResourceStream(this, value, is, 1771 file, null); 1772 is.close(); 1773 // System.out.println("Created stream: " + dr); 1774 } catch (Exception e) { 1775 NotFoundException rnf = new NotFoundException( 1776 "File " + file + " from drawable resource ID #0x" 1777 + Integer.toHexString(id)); 1778 rnf.initCause(e); 1779 throw rnf; 1780 } 1781 } 1782 } 1783 } 1784 1785 if (dr != null) { 1786 dr.setChangingConfigurations(value.changingConfigurations); 1787 cs = dr.getConstantState(); 1788 if (cs != null) { 1789 if (mPreloading) { 1790 if (isColorDrawable) { 1791 sPreloadedColorDrawables.put(key, cs); 1792 } else { 1793 sPreloadedDrawables.put(key, cs); 1794 } 1795 } else { 1796 synchronized (mTmpValue) { 1797 //Log.i(TAG, "Saving cached drawable @ #" + 1798 // Integer.toHexString(key.intValue()) 1799 // + " in " + this + ": " + cs); 1800 if (isColorDrawable) { 1801 mColorDrawableCache.put(key, new WeakReference<Drawable.ConstantState>(cs)); 1802 } else { 1803 mDrawableCache.put(key, new WeakReference<Drawable.ConstantState>(cs)); 1804 } 1805 } 1806 } 1807 } 1808 } 1809 1810 return dr; 1811 } 1812 1813 private Drawable getCachedDrawable( 1814 LongSparseArray<WeakReference<ConstantState>> drawableCache, 1815 long key) { 1816 synchronized (mTmpValue) { 1817 WeakReference<Drawable.ConstantState> wr = drawableCache.get(key); 1818 if (wr != null) { // we have the key 1819 Drawable.ConstantState entry = wr.get(); 1820 if (entry != null) { 1821 //Log.i(TAG, "Returning cached drawable @ #" + 1822 // Integer.toHexString(((Integer)key).intValue()) 1823 // + " in " + this + ": " + entry); 1824 return entry.newDrawable(); 1825 } 1826 else { // our entry has been purged 1827 drawableCache.delete(key); 1828 } 1829 } 1830 } 1831 return null; 1832 } 1833 1834 /*package*/ ColorStateList loadColorStateList(TypedValue value, int id) 1835 throws NotFoundException { 1836 if (TRACE_FOR_PRELOAD) { 1837 // Log only framework resources 1838 if ((id >>> 24) == 0x1) { 1839 final String name = getResourceName(id); 1840 if (name != null) android.util.Log.d("PreloadColorStateList", name); 1841 } 1842 } 1843 1844 final int key = (value.assetCookie << 24) | value.data; 1845 1846 ColorStateList csl; 1847 1848 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT && 1849 value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 1850 1851 csl = mPreloadedColorStateLists.get(key); 1852 if (csl != null) { 1853 return csl; 1854 } 1855 1856 csl = ColorStateList.valueOf(value.data); 1857 if (mPreloading) { 1858 mPreloadedColorStateLists.put(key, csl); 1859 } 1860 1861 return csl; 1862 } 1863 1864 csl = getCachedColorStateList(key); 1865 if (csl != null) { 1866 return csl; 1867 } 1868 1869 csl = mPreloadedColorStateLists.get(key); 1870 if (csl != null) { 1871 return csl; 1872 } 1873 1874 if (value.string == null) { 1875 throw new NotFoundException( 1876 "Resource is not a ColorStateList (color or path): " + value); 1877 } 1878 1879 String file = value.string.toString(); 1880 1881 if (file.endsWith(".xml")) { 1882 try { 1883 XmlResourceParser rp = loadXmlResourceParser( 1884 file, id, value.assetCookie, "colorstatelist"); 1885 csl = ColorStateList.createFromXml(this, rp); 1886 rp.close(); 1887 } catch (Exception e) { 1888 NotFoundException rnf = new NotFoundException( 1889 "File " + file + " from color state list resource ID #0x" 1890 + Integer.toHexString(id)); 1891 rnf.initCause(e); 1892 throw rnf; 1893 } 1894 } else { 1895 throw new NotFoundException( 1896 "File " + file + " from drawable resource ID #0x" 1897 + Integer.toHexString(id) + ": .xml extension required"); 1898 } 1899 1900 if (csl != null) { 1901 if (mPreloading) { 1902 mPreloadedColorStateLists.put(key, csl); 1903 } else { 1904 synchronized (mTmpValue) { 1905 //Log.i(TAG, "Saving cached color state list @ #" + 1906 // Integer.toHexString(key.intValue()) 1907 // + " in " + this + ": " + csl); 1908 mColorStateListCache.put( 1909 key, new WeakReference<ColorStateList>(csl)); 1910 } 1911 } 1912 } 1913 1914 return csl; 1915 } 1916 1917 private ColorStateList getCachedColorStateList(int key) { 1918 synchronized (mTmpValue) { 1919 WeakReference<ColorStateList> wr = mColorStateListCache.get(key); 1920 if (wr != null) { // we have the key 1921 ColorStateList entry = wr.get(); 1922 if (entry != null) { 1923 //Log.i(TAG, "Returning cached color state list @ #" + 1924 // Integer.toHexString(((Integer)key).intValue()) 1925 // + " in " + this + ": " + entry); 1926 return entry; 1927 } 1928 else { // our entry has been purged 1929 mColorStateListCache.delete(key); 1930 } 1931 } 1932 } 1933 return null; 1934 } 1935 1936 /*package*/ XmlResourceParser loadXmlResourceParser(int id, String type) 1937 throws NotFoundException { 1938 synchronized (mTmpValue) { 1939 TypedValue value = mTmpValue; 1940 getValue(id, value, true); 1941 if (value.type == TypedValue.TYPE_STRING) { 1942 return loadXmlResourceParser(value.string.toString(), id, 1943 value.assetCookie, type); 1944 } 1945 throw new NotFoundException( 1946 "Resource ID #0x" + Integer.toHexString(id) + " type #0x" 1947 + Integer.toHexString(value.type) + " is not valid"); 1948 } 1949 } 1950 1951 /*package*/ XmlResourceParser loadXmlResourceParser(String file, int id, 1952 int assetCookie, String type) throws NotFoundException { 1953 if (id != 0) { 1954 try { 1955 // These may be compiled... 1956 synchronized (mCachedXmlBlockIds) { 1957 // First see if this block is in our cache. 1958 final int num = mCachedXmlBlockIds.length; 1959 for (int i=0; i<num; i++) { 1960 if (mCachedXmlBlockIds[i] == id) { 1961 //System.out.println("**** REUSING XML BLOCK! id=" 1962 // + id + ", index=" + i); 1963 return mCachedXmlBlocks[i].newParser(); 1964 } 1965 } 1966 1967 // Not in the cache, create a new block and put it at 1968 // the next slot in the cache. 1969 XmlBlock block = mAssets.openXmlBlockAsset( 1970 assetCookie, file); 1971 if (block != null) { 1972 int pos = mLastCachedXmlBlockIndex+1; 1973 if (pos >= num) pos = 0; 1974 mLastCachedXmlBlockIndex = pos; 1975 XmlBlock oldBlock = mCachedXmlBlocks[pos]; 1976 if (oldBlock != null) { 1977 oldBlock.close(); 1978 } 1979 mCachedXmlBlockIds[pos] = id; 1980 mCachedXmlBlocks[pos] = block; 1981 //System.out.println("**** CACHING NEW XML BLOCK! id=" 1982 // + id + ", index=" + pos); 1983 return block.newParser(); 1984 } 1985 } 1986 } catch (Exception e) { 1987 NotFoundException rnf = new NotFoundException( 1988 "File " + file + " from xml type " + type + " resource ID #0x" 1989 + Integer.toHexString(id)); 1990 rnf.initCause(e); 1991 throw rnf; 1992 } 1993 } 1994 1995 throw new NotFoundException( 1996 "File " + file + " from xml type " + type + " resource ID #0x" 1997 + Integer.toHexString(id)); 1998 } 1999 2000 /** 2001 * Returns the display adjusted for the Resources' metrics. 2002 * @hide 2003 */ 2004 public Display getDefaultDisplay(Display defaultDisplay) { 2005 if (mDefaultDisplay == null) { 2006 if (!mCompatibilityInfo.isScalingRequired() && mCompatibilityInfo.supportsScreen()) { 2007 // the app supports the display. just use the default one. 2008 mDefaultDisplay = defaultDisplay; 2009 } else { 2010 // display needs adjustment. 2011 mDefaultDisplay = Display.createMetricsBasedDisplay( 2012 defaultDisplay.getDisplayId(), mMetrics); 2013 } 2014 } 2015 return mDefaultDisplay; 2016 } 2017 2018 private TypedArray getCachedStyledAttributes(int len) { 2019 synchronized (mTmpValue) { 2020 TypedArray attrs = mCachedStyledAttributes; 2021 if (attrs != null) { 2022 mCachedStyledAttributes = null; 2023 2024 attrs.mLength = len; 2025 int fullLen = len * AssetManager.STYLE_NUM_ENTRIES; 2026 if (attrs.mData.length >= fullLen) { 2027 return attrs; 2028 } 2029 attrs.mData = new int[fullLen]; 2030 attrs.mIndices = new int[1+len]; 2031 return attrs; 2032 } 2033 return new TypedArray(this, 2034 new int[len*AssetManager.STYLE_NUM_ENTRIES], 2035 new int[1+len], len); 2036 } 2037 } 2038 2039 private Resources() { 2040 mAssets = AssetManager.getSystem(); 2041 // NOTE: Intentionally leaving this uninitialized (all values set 2042 // to zero), so that anyone who tries to do something that requires 2043 // metrics will get a very wrong value. 2044 mConfiguration.setToDefaults(); 2045 mMetrics.setToDefaults(); 2046 updateConfiguration(null, null); 2047 mAssets.ensureStringBlocks(); 2048 mCompatibilityInfo = CompatibilityInfo.DEFAULT_COMPATIBILITY_INFO; 2049 } 2050} 2051