ResourcesImpl.java revision 50954d2b4ea938d787ef5021d75f6bc02826607a
1/* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not 5 * use this file except in compliance with the License. You may obtain a copy of 6 * 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, WITHOUT 12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 13 * License for the specific language governing permissions and limitations under 14 * the License. 15 */ 16package android.content.res; 17 18import org.xmlpull.v1.XmlPullParser; 19import org.xmlpull.v1.XmlPullParserException; 20 21import android.animation.Animator; 22import android.animation.StateListAnimator; 23import android.annotation.AnyRes; 24import android.annotation.AttrRes; 25import android.annotation.NonNull; 26import android.annotation.Nullable; 27import android.annotation.PluralsRes; 28import android.annotation.RawRes; 29import android.annotation.StyleRes; 30import android.annotation.StyleableRes; 31import android.content.pm.ActivityInfo; 32import android.content.pm.ActivityInfo.Config; 33import android.content.res.Configuration.NativeConfig; 34import android.content.res.Resources.NotFoundException; 35import android.graphics.FontFamily; 36import android.graphics.Typeface; 37import android.graphics.drawable.ColorDrawable; 38import android.graphics.drawable.Drawable; 39import android.icu.text.PluralRules; 40import android.os.Build; 41import android.os.LocaleList; 42import android.os.Trace; 43import android.text.FontConfig; 44import android.util.AttributeSet; 45import android.util.DisplayMetrics; 46import android.util.Log; 47import android.util.LongSparseArray; 48import android.util.Slog; 49import android.util.TypedValue; 50import android.util.Xml; 51import android.view.DisplayAdjustments; 52 53import java.io.IOException; 54import java.io.InputStream; 55import java.util.Arrays; 56import java.util.List; 57import java.util.Locale; 58 59/** 60 * The implementation of Resource access. This class contains the AssetManager and all caches 61 * associated with it. 62 * 63 * {@link Resources} is just a thing wrapper around this class. When a configuration change 64 * occurs, clients can retain the same {@link Resources} reference because the underlying 65 * {@link ResourcesImpl} object will be updated or re-created. 66 * 67 * @hide 68 */ 69public class ResourcesImpl { 70 static final String TAG = "Resources"; 71 72 private static final boolean DEBUG_LOAD = false; 73 private static final boolean DEBUG_CONFIG = false; 74 private static final boolean TRACE_FOR_PRELOAD = false; 75 private static final boolean TRACE_FOR_MISS_PRELOAD = false; 76 77 78 private static final int ID_OTHER = 0x01000004; 79 80 private static final Object sSync = new Object(); 81 82 private static boolean sPreloaded; 83 private boolean mPreloading; 84 85 // Information about preloaded resources. Note that they are not 86 // protected by a lock, because while preloading in zygote we are all 87 // single-threaded, and after that these are immutable. 88 private static final LongSparseArray<Drawable.ConstantState>[] sPreloadedDrawables; 89 private static final LongSparseArray<Drawable.ConstantState> sPreloadedColorDrawables 90 = new LongSparseArray<>(); 91 private static final LongSparseArray<android.content.res.ConstantState<ComplexColor>> 92 sPreloadedComplexColors = new LongSparseArray<>(); 93 94 /** Lock object used to protect access to caches and configuration. */ 95 private final Object mAccessLock = new Object(); 96 97 // These are protected by mAccessLock. 98 private final Configuration mTmpConfig = new Configuration(); 99 private final DrawableCache mDrawableCache = new DrawableCache(); 100 private final DrawableCache mColorDrawableCache = new DrawableCache(); 101 private final ConfigurationBoundResourceCache<ComplexColor> mComplexColorCache = 102 new ConfigurationBoundResourceCache<>(); 103 private final ConfigurationBoundResourceCache<Animator> mAnimatorCache = 104 new ConfigurationBoundResourceCache<>(); 105 private final ConfigurationBoundResourceCache<StateListAnimator> mStateListAnimatorCache = 106 new ConfigurationBoundResourceCache<>(); 107 108 /** Size of the cyclical cache used to map XML files to blocks. */ 109 private static final int XML_BLOCK_CACHE_SIZE = 4; 110 111 // Cyclical cache used for recently-accessed XML files. 112 private int mLastCachedXmlBlockIndex = -1; 113 private final int[] mCachedXmlBlockCookies = new int[XML_BLOCK_CACHE_SIZE]; 114 private final String[] mCachedXmlBlockFiles = new String[XML_BLOCK_CACHE_SIZE]; 115 private final XmlBlock[] mCachedXmlBlocks = new XmlBlock[XML_BLOCK_CACHE_SIZE]; 116 117 118 final AssetManager mAssets; 119 private final DisplayMetrics mMetrics = new DisplayMetrics(); 120 private final DisplayAdjustments mDisplayAdjustments; 121 122 private PluralRules mPluralRule; 123 124 private final Configuration mConfiguration = new Configuration(); 125 126 static { 127 sPreloadedDrawables = new LongSparseArray[2]; 128 sPreloadedDrawables[0] = new LongSparseArray<>(); 129 sPreloadedDrawables[1] = new LongSparseArray<>(); 130 } 131 132 /** 133 * Creates a new ResourcesImpl object with CompatibilityInfo. 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 * @param displayAdjustments this resource's Display override and compatibility info. 141 * Must not be null. 142 */ 143 public ResourcesImpl(@NonNull AssetManager assets, @Nullable DisplayMetrics metrics, 144 @Nullable Configuration config, @NonNull DisplayAdjustments displayAdjustments) { 145 mAssets = assets; 146 mMetrics.setToDefaults(); 147 mDisplayAdjustments = displayAdjustments; 148 mConfiguration.setToDefaults(); 149 updateConfiguration(config, metrics, displayAdjustments.getCompatibilityInfo()); 150 mAssets.ensureStringBlocks(); 151 } 152 153 public DisplayAdjustments getDisplayAdjustments() { 154 return mDisplayAdjustments; 155 } 156 157 public AssetManager getAssets() { 158 return mAssets; 159 } 160 161 DisplayMetrics getDisplayMetrics() { 162 if (DEBUG_CONFIG) Slog.v(TAG, "Returning DisplayMetrics: " + mMetrics.widthPixels 163 + "x" + mMetrics.heightPixels + " " + mMetrics.density); 164 return mMetrics; 165 } 166 167 Configuration getConfiguration() { 168 return mConfiguration; 169 } 170 171 Configuration[] getSizeConfigurations() { 172 return mAssets.getSizeConfigurations(); 173 } 174 175 CompatibilityInfo getCompatibilityInfo() { 176 return mDisplayAdjustments.getCompatibilityInfo(); 177 } 178 179 private PluralRules getPluralRule() { 180 synchronized (sSync) { 181 if (mPluralRule == null) { 182 mPluralRule = PluralRules.forLocale(mConfiguration.getLocales().get(0)); 183 } 184 return mPluralRule; 185 } 186 } 187 188 void getValue(@AnyRes int id, TypedValue outValue, boolean resolveRefs) 189 throws NotFoundException { 190 boolean found = mAssets.getResourceValue(id, 0, outValue, resolveRefs); 191 if (found) { 192 return; 193 } 194 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id)); 195 } 196 197 void getValueForDensity(@AnyRes int id, int density, TypedValue outValue, 198 boolean resolveRefs) throws NotFoundException { 199 boolean found = mAssets.getResourceValue(id, density, outValue, resolveRefs); 200 if (found) { 201 return; 202 } 203 throw new NotFoundException("Resource ID #0x" + Integer.toHexString(id)); 204 } 205 206 void getValue(String name, TypedValue outValue, boolean resolveRefs) 207 throws NotFoundException { 208 int id = getIdentifier(name, "string", null); 209 if (id != 0) { 210 getValue(id, outValue, resolveRefs); 211 return; 212 } 213 throw new NotFoundException("String resource name " + name); 214 } 215 216 int getIdentifier(String name, String defType, String defPackage) { 217 if (name == null) { 218 throw new NullPointerException("name is null"); 219 } 220 try { 221 return Integer.parseInt(name); 222 } catch (Exception e) { 223 // Ignore 224 } 225 return mAssets.getResourceIdentifier(name, defType, defPackage); 226 } 227 228 @NonNull 229 String getResourceName(@AnyRes int resid) throws NotFoundException { 230 String str = mAssets.getResourceName(resid); 231 if (str != null) return str; 232 throw new NotFoundException("Unable to find resource ID #0x" 233 + Integer.toHexString(resid)); 234 } 235 236 @NonNull 237 String getResourcePackageName(@AnyRes int resid) throws NotFoundException { 238 String str = mAssets.getResourcePackageName(resid); 239 if (str != null) return str; 240 throw new NotFoundException("Unable to find resource ID #0x" 241 + Integer.toHexString(resid)); 242 } 243 244 @NonNull 245 String getResourceTypeName(@AnyRes int resid) throws NotFoundException { 246 String str = mAssets.getResourceTypeName(resid); 247 if (str != null) return str; 248 throw new NotFoundException("Unable to find resource ID #0x" 249 + Integer.toHexString(resid)); 250 } 251 252 @NonNull 253 String getResourceEntryName(@AnyRes int resid) throws NotFoundException { 254 String str = mAssets.getResourceEntryName(resid); 255 if (str != null) return str; 256 throw new NotFoundException("Unable to find resource ID #0x" 257 + Integer.toHexString(resid)); 258 } 259 260 @NonNull 261 CharSequence getQuantityText(@PluralsRes int id, int quantity) throws NotFoundException { 262 PluralRules rule = getPluralRule(); 263 CharSequence res = mAssets.getResourceBagText(id, 264 attrForQuantityCode(rule.select(quantity))); 265 if (res != null) { 266 return res; 267 } 268 res = mAssets.getResourceBagText(id, ID_OTHER); 269 if (res != null) { 270 return res; 271 } 272 throw new NotFoundException("Plural resource ID #0x" + Integer.toHexString(id) 273 + " quantity=" + quantity 274 + " item=" + rule.select(quantity)); 275 } 276 277 private static int attrForQuantityCode(String quantityCode) { 278 switch (quantityCode) { 279 case PluralRules.KEYWORD_ZERO: return 0x01000005; 280 case PluralRules.KEYWORD_ONE: return 0x01000006; 281 case PluralRules.KEYWORD_TWO: return 0x01000007; 282 case PluralRules.KEYWORD_FEW: return 0x01000008; 283 case PluralRules.KEYWORD_MANY: return 0x01000009; 284 default: return ID_OTHER; 285 } 286 } 287 288 @NonNull 289 AssetFileDescriptor openRawResourceFd(@RawRes int id, TypedValue tempValue) 290 throws NotFoundException { 291 getValue(id, tempValue, true); 292 try { 293 return mAssets.openNonAssetFd(tempValue.assetCookie, tempValue.string.toString()); 294 } catch (Exception e) { 295 throw new NotFoundException("File " + tempValue.string.toString() + " from drawable " 296 + "resource ID #0x" + Integer.toHexString(id), e); 297 } 298 } 299 300 @NonNull 301 InputStream openRawResource(@RawRes int id, TypedValue value) throws NotFoundException { 302 getValue(id, value, true); 303 try { 304 return mAssets.openNonAsset(value.assetCookie, value.string.toString(), 305 AssetManager.ACCESS_STREAMING); 306 } catch (Exception e) { 307 // Note: value.string might be null 308 NotFoundException rnf = new NotFoundException("File " 309 + (value.string == null ? "(null)" : value.string.toString()) 310 + " from drawable resource ID #0x" + Integer.toHexString(id)); 311 rnf.initCause(e); 312 throw rnf; 313 } 314 } 315 316 ConfigurationBoundResourceCache<Animator> getAnimatorCache() { 317 return mAnimatorCache; 318 } 319 320 ConfigurationBoundResourceCache<StateListAnimator> getStateListAnimatorCache() { 321 return mStateListAnimatorCache; 322 } 323 324 public void updateConfiguration(Configuration config, DisplayMetrics metrics, 325 CompatibilityInfo compat) { 326 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, "ResourcesImpl#updateConfiguration"); 327 try { 328 synchronized (mAccessLock) { 329 if (false) { 330 Slog.i(TAG, "**** Updating config of " + this + ": old config is " 331 + mConfiguration + " old compat is " 332 + mDisplayAdjustments.getCompatibilityInfo()); 333 Slog.i(TAG, "**** Updating config of " + this + ": new config is " 334 + config + " new compat is " + compat); 335 } 336 if (compat != null) { 337 mDisplayAdjustments.setCompatibilityInfo(compat); 338 } 339 if (metrics != null) { 340 mMetrics.setTo(metrics); 341 } 342 // NOTE: We should re-arrange this code to create a Display 343 // with the CompatibilityInfo that is used everywhere we deal 344 // with the display in relation to this app, rather than 345 // doing the conversion here. This impl should be okay because 346 // we make sure to return a compatible display in the places 347 // where there are public APIs to retrieve the display... but 348 // it would be cleaner and more maintainable to just be 349 // consistently dealing with a compatible display everywhere in 350 // the framework. 351 mDisplayAdjustments.getCompatibilityInfo().applyToDisplayMetrics(mMetrics); 352 353 final @Config int configChanges = calcConfigChanges(config); 354 355 // If even after the update there are no Locales set, grab the default locales. 356 LocaleList locales = mConfiguration.getLocales(); 357 if (locales.isEmpty()) { 358 locales = LocaleList.getDefault(); 359 mConfiguration.setLocales(locales); 360 } 361 362 if ((configChanges & ActivityInfo.CONFIG_LOCALE) != 0) { 363 if (locales.size() > 1) { 364 // The LocaleList has changed. We must query the AssetManager's available 365 // Locales and figure out the best matching Locale in the new LocaleList. 366 String[] availableLocales = mAssets.getNonSystemLocales(); 367 if (LocaleList.isPseudoLocalesOnly(availableLocales)) { 368 // No app defined locales, so grab the system locales. 369 availableLocales = mAssets.getLocales(); 370 if (LocaleList.isPseudoLocalesOnly(availableLocales)) { 371 availableLocales = null; 372 } 373 } 374 375 if (availableLocales != null) { 376 final Locale bestLocale = locales.getFirstMatchWithEnglishSupported( 377 availableLocales); 378 if (bestLocale != null && bestLocale != locales.get(0)) { 379 mConfiguration.setLocales(new LocaleList(bestLocale, locales)); 380 } 381 } 382 } 383 } 384 385 if (mConfiguration.densityDpi != Configuration.DENSITY_DPI_UNDEFINED) { 386 mMetrics.densityDpi = mConfiguration.densityDpi; 387 mMetrics.density = 388 mConfiguration.densityDpi * DisplayMetrics.DENSITY_DEFAULT_SCALE; 389 } 390 391 // Protect against an unset fontScale. 392 mMetrics.scaledDensity = mMetrics.density * 393 (mConfiguration.fontScale != 0 ? mConfiguration.fontScale : 1.0f); 394 395 final int width, height; 396 if (mMetrics.widthPixels >= mMetrics.heightPixels) { 397 width = mMetrics.widthPixels; 398 height = mMetrics.heightPixels; 399 } else { 400 //noinspection SuspiciousNameCombination 401 width = mMetrics.heightPixels; 402 //noinspection SuspiciousNameCombination 403 height = mMetrics.widthPixels; 404 } 405 406 final int keyboardHidden; 407 if (mConfiguration.keyboardHidden == Configuration.KEYBOARDHIDDEN_NO 408 && mConfiguration.hardKeyboardHidden 409 == Configuration.HARDKEYBOARDHIDDEN_YES) { 410 keyboardHidden = Configuration.KEYBOARDHIDDEN_SOFT; 411 } else { 412 keyboardHidden = mConfiguration.keyboardHidden; 413 } 414 415 mAssets.setConfiguration(mConfiguration.mcc, mConfiguration.mnc, 416 adjustLanguageTag(mConfiguration.getLocales().get(0).toLanguageTag()), 417 mConfiguration.orientation, 418 mConfiguration.touchscreen, 419 mConfiguration.densityDpi, mConfiguration.keyboard, 420 keyboardHidden, mConfiguration.navigation, width, height, 421 mConfiguration.smallestScreenWidthDp, 422 mConfiguration.screenWidthDp, mConfiguration.screenHeightDp, 423 mConfiguration.screenLayout, mConfiguration.uiMode, 424 mConfiguration.colorMode, Build.VERSION.RESOURCES_SDK_INT); 425 426 if (DEBUG_CONFIG) { 427 Slog.i(TAG, "**** Updating config of " + this + ": final config is " 428 + mConfiguration + " final compat is " 429 + mDisplayAdjustments.getCompatibilityInfo()); 430 } 431 432 mDrawableCache.onConfigurationChange(configChanges); 433 mColorDrawableCache.onConfigurationChange(configChanges); 434 mComplexColorCache.onConfigurationChange(configChanges); 435 mAnimatorCache.onConfigurationChange(configChanges); 436 mStateListAnimatorCache.onConfigurationChange(configChanges); 437 438 flushLayoutCache(); 439 } 440 synchronized (sSync) { 441 if (mPluralRule != null) { 442 mPluralRule = PluralRules.forLocale(mConfiguration.getLocales().get(0)); 443 } 444 } 445 } finally { 446 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 447 } 448 } 449 450 /** 451 * Applies the new configuration, returning a bitmask of the changes 452 * between the old and new configurations. 453 * 454 * @param config the new configuration 455 * @return bitmask of config changes 456 */ 457 public @Config int calcConfigChanges(@Nullable Configuration config) { 458 if (config == null) { 459 // If there is no configuration, assume all flags have changed. 460 return 0xFFFFFFFF; 461 } 462 463 mTmpConfig.setTo(config); 464 int density = config.densityDpi; 465 if (density == Configuration.DENSITY_DPI_UNDEFINED) { 466 density = mMetrics.noncompatDensityDpi; 467 } 468 469 mDisplayAdjustments.getCompatibilityInfo().applyToConfiguration(density, mTmpConfig); 470 471 if (mTmpConfig.getLocales().isEmpty()) { 472 mTmpConfig.setLocales(LocaleList.getDefault()); 473 } 474 return mConfiguration.updateFrom(mTmpConfig); 475 } 476 477 /** 478 * {@code Locale.toLanguageTag} will transform the obsolete (and deprecated) 479 * language codes "in", "ji" and "iw" to "id", "yi" and "he" respectively. 480 * 481 * All released versions of android prior to "L" used the deprecated language 482 * tags, so we will need to support them for backwards compatibility. 483 * 484 * Note that this conversion needs to take place *after* the call to 485 * {@code toLanguageTag} because that will convert all the deprecated codes to 486 * the new ones, even if they're set manually. 487 */ 488 private static String adjustLanguageTag(String languageTag) { 489 final int separator = languageTag.indexOf('-'); 490 final String language; 491 final String remainder; 492 493 if (separator == -1) { 494 language = languageTag; 495 remainder = ""; 496 } else { 497 language = languageTag.substring(0, separator); 498 remainder = languageTag.substring(separator); 499 } 500 501 return Locale.adjustLanguageCode(language) + remainder; 502 } 503 504 /** 505 * Call this to remove all cached loaded layout resources from the 506 * Resources object. Only intended for use with performance testing 507 * tools. 508 */ 509 public void flushLayoutCache() { 510 synchronized (mCachedXmlBlocks) { 511 Arrays.fill(mCachedXmlBlockCookies, 0); 512 Arrays.fill(mCachedXmlBlockFiles, null); 513 514 final XmlBlock[] cachedXmlBlocks = mCachedXmlBlocks; 515 for (int i = 0; i < XML_BLOCK_CACHE_SIZE; i++) { 516 final XmlBlock oldBlock = cachedXmlBlocks[i]; 517 if (oldBlock != null) { 518 oldBlock.close(); 519 } 520 } 521 Arrays.fill(cachedXmlBlocks, null); 522 } 523 } 524 525 @Nullable 526 Drawable loadDrawable(@NonNull Resources wrapper, @NonNull TypedValue value, int id, 527 int density, @Nullable Resources.Theme theme) 528 throws NotFoundException { 529 // If the drawable's XML lives in our current density qualifier, 530 // it's okay to use a scaled version from the cache. Otherwise, we 531 // need to actually load the drawable from XML. 532 final boolean useCache = density == 0 || value.density == mMetrics.densityDpi; 533 534 // Pretend the requested density is actually the display density. If 535 // the drawable returned is not the requested density, then force it 536 // to be scaled later by dividing its density by the ratio of 537 // requested density to actual device density. Drawables that have 538 // undefined density or no density don't need to be handled here. 539 if (density > 0 && value.density > 0 && value.density != TypedValue.DENSITY_NONE) { 540 if (value.density == density) { 541 value.density = mMetrics.densityDpi; 542 } else { 543 value.density = (value.density * mMetrics.densityDpi) / density; 544 } 545 } 546 547 try { 548 if (TRACE_FOR_PRELOAD) { 549 // Log only framework resources 550 if ((id >>> 24) == 0x1) { 551 final String name = getResourceName(id); 552 if (name != null) { 553 Log.d("PreloadDrawable", name); 554 } 555 } 556 } 557 558 final boolean isColorDrawable; 559 final DrawableCache caches; 560 final long key; 561 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT 562 && value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 563 isColorDrawable = true; 564 caches = mColorDrawableCache; 565 key = value.data; 566 } else { 567 isColorDrawable = false; 568 caches = mDrawableCache; 569 key = (((long) value.assetCookie) << 32) | value.data; 570 } 571 572 // First, check whether we have a cached version of this drawable 573 // that was inflated against the specified theme. Skip the cache if 574 // we're currently preloading or we're not using the cache. 575 if (!mPreloading && useCache) { 576 final Drawable cachedDrawable = caches.getInstance(key, wrapper, theme); 577 if (cachedDrawable != null) { 578 cachedDrawable.setChangingConfigurations(value.changingConfigurations); 579 return cachedDrawable; 580 } 581 } 582 583 // Next, check preloaded drawables. Preloaded drawables may contain 584 // unresolved theme attributes. 585 final Drawable.ConstantState cs; 586 if (isColorDrawable) { 587 cs = sPreloadedColorDrawables.get(key); 588 } else { 589 cs = sPreloadedDrawables[mConfiguration.getLayoutDirection()].get(key); 590 } 591 592 Drawable dr; 593 if (cs != null) { 594 dr = cs.newDrawable(wrapper); 595 } else if (isColorDrawable) { 596 dr = new ColorDrawable(value.data); 597 } else { 598 dr = loadDrawableForCookie(wrapper, value, id, density, null); 599 } 600 601 // Determine if the drawable has unresolved theme attributes. If it 602 // does, we'll need to apply a theme and store it in a theme-specific 603 // cache. 604 final boolean canApplyTheme = dr != null && dr.canApplyTheme(); 605 if (canApplyTheme && theme != null) { 606 dr = dr.mutate(); 607 dr.applyTheme(theme); 608 dr.clearMutated(); 609 } 610 611 // If we were able to obtain a drawable, store it in the appropriate 612 // cache: preload, not themed, null theme, or theme-specific. Don't 613 // pollute the cache with drawables loaded from a foreign density. 614 if (dr != null) { 615 dr.setChangingConfigurations(value.changingConfigurations); 616 if (useCache) { 617 cacheDrawable(value, isColorDrawable, caches, theme, canApplyTheme, key, dr); 618 } 619 } 620 621 return dr; 622 } catch (Exception e) { 623 String name; 624 try { 625 name = getResourceName(id); 626 } catch (NotFoundException e2) { 627 name = "(missing name)"; 628 } 629 630 // The target drawable might fail to load for any number of 631 // reasons, but we always want to include the resource name. 632 // Since the client already expects this method to throw a 633 // NotFoundException, just throw one of those. 634 final NotFoundException nfe = new NotFoundException("Drawable " + name 635 + " with resource ID #0x" + Integer.toHexString(id), e); 636 nfe.setStackTrace(new StackTraceElement[0]); 637 throw nfe; 638 } 639 } 640 641 private void cacheDrawable(TypedValue value, boolean isColorDrawable, DrawableCache caches, 642 Resources.Theme theme, boolean usesTheme, long key, Drawable dr) { 643 final Drawable.ConstantState cs = dr.getConstantState(); 644 if (cs == null) { 645 return; 646 } 647 648 if (mPreloading) { 649 final int changingConfigs = cs.getChangingConfigurations(); 650 if (isColorDrawable) { 651 if (verifyPreloadConfig(changingConfigs, 0, value.resourceId, "drawable")) { 652 sPreloadedColorDrawables.put(key, cs); 653 } 654 } else { 655 if (verifyPreloadConfig( 656 changingConfigs, ActivityInfo.CONFIG_LAYOUT_DIRECTION, value.resourceId, "drawable")) { 657 if ((changingConfigs & ActivityInfo.CONFIG_LAYOUT_DIRECTION) == 0) { 658 // If this resource does not vary based on layout direction, 659 // we can put it in all of the preload maps. 660 sPreloadedDrawables[0].put(key, cs); 661 sPreloadedDrawables[1].put(key, cs); 662 } else { 663 // Otherwise, only in the layout dir we loaded it for. 664 sPreloadedDrawables[mConfiguration.getLayoutDirection()].put(key, cs); 665 } 666 } 667 } 668 } else { 669 synchronized (mAccessLock) { 670 caches.put(key, theme, cs, usesTheme); 671 } 672 } 673 } 674 675 private boolean verifyPreloadConfig(@Config int changingConfigurations, 676 @Config int allowVarying, @AnyRes int resourceId, @Nullable String name) { 677 // We allow preloading of resources even if they vary by font scale (which 678 // doesn't impact resource selection) or density (which we handle specially by 679 // simply turning off all preloading), as well as any other configs specified 680 // by the caller. 681 if (((changingConfigurations&~(ActivityInfo.CONFIG_FONT_SCALE | 682 ActivityInfo.CONFIG_DENSITY)) & ~allowVarying) != 0) { 683 String resName; 684 try { 685 resName = getResourceName(resourceId); 686 } catch (NotFoundException e) { 687 resName = "?"; 688 } 689 // This should never happen in production, so we should log a 690 // warning even if we're not debugging. 691 Log.w(TAG, "Preloaded " + name + " resource #0x" 692 + Integer.toHexString(resourceId) 693 + " (" + resName + ") that varies with configuration!!"); 694 return false; 695 } 696 if (TRACE_FOR_PRELOAD) { 697 String resName; 698 try { 699 resName = getResourceName(resourceId); 700 } catch (NotFoundException e) { 701 resName = "?"; 702 } 703 Log.w(TAG, "Preloading " + name + " resource #0x" 704 + Integer.toHexString(resourceId) 705 + " (" + resName + ")"); 706 } 707 return true; 708 } 709 710 /** 711 * Loads a drawable from XML or resources stream. 712 */ 713 private Drawable loadDrawableForCookie(@NonNull Resources wrapper, @NonNull TypedValue value, 714 int id, int density, @Nullable Resources.Theme theme) { 715 if (value.string == null) { 716 throw new NotFoundException("Resource \"" + getResourceName(id) + "\" (" 717 + Integer.toHexString(id) + ") is not a Drawable (color or path): " + value); 718 } 719 720 final String file = value.string.toString(); 721 722 if (TRACE_FOR_MISS_PRELOAD) { 723 // Log only framework resources 724 if ((id >>> 24) == 0x1) { 725 final String name = getResourceName(id); 726 if (name != null) { 727 Log.d(TAG, "Loading framework drawable #" + Integer.toHexString(id) 728 + ": " + name + " at " + file); 729 } 730 } 731 } 732 733 if (DEBUG_LOAD) { 734 Log.v(TAG, "Loading drawable for cookie " + value.assetCookie + ": " + file); 735 } 736 737 final Drawable dr; 738 739 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 740 try { 741 if (file.endsWith(".xml")) { 742 final XmlResourceParser rp = loadXmlResourceParser( 743 file, id, value.assetCookie, "drawable"); 744 dr = Drawable.createFromXmlForDensity(wrapper, rp, density, theme); 745 rp.close(); 746 } else { 747 final InputStream is = mAssets.openNonAsset( 748 value.assetCookie, file, AssetManager.ACCESS_STREAMING); 749 dr = Drawable.createFromResourceStream(wrapper, value, is, file, null); 750 is.close(); 751 } 752 } catch (Exception e) { 753 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 754 final NotFoundException rnf = new NotFoundException( 755 "File " + file + " from drawable resource ID #0x" + Integer.toHexString(id)); 756 rnf.initCause(e); 757 throw rnf; 758 } 759 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 760 761 return dr; 762 } 763 764 /** 765 * Loads a font from XML or resources stream. 766 */ 767 @Nullable 768 public Typeface loadFont(Resources wrapper, TypedValue value, int id) { 769 if (value.string == null) { 770 throw new NotFoundException("Resource \"" + getResourceName(id) + "\" (" 771 + Integer.toHexString(id) + ") is not a Font: " + value); 772 } 773 774 final String file = value.string.toString(); 775 Typeface cached = Typeface.findFromCache(mAssets, file); 776 if (cached != null) { 777 return cached; 778 } 779 780 if (DEBUG_LOAD) { 781 Log.v(TAG, "Loading font for cookie " + value.assetCookie + ": " + file); 782 } 783 784 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 785 try { 786 if (file.endsWith("xml")) { 787 final XmlResourceParser rp = loadXmlResourceParser( 788 file, id, value.assetCookie, "font"); 789 final FontResourcesParser.FamilyResourceEntry familyEntry = 790 FontResourcesParser.parse(rp, wrapper); 791 if (familyEntry == null) { 792 Log.e(TAG, "Failed to find font-family tag"); 793 return null; 794 } 795 return Typeface.createFromResources(familyEntry, mAssets, file); 796 } 797 return Typeface.createFromResources(mAssets, file, value.assetCookie); 798 } catch (XmlPullParserException e) { 799 Log.e(TAG, "Failed to parse xml resource " + file, e); 800 } catch (IOException e) { 801 Log.e(TAG, "Failed to read xml resource " + file, e); 802 } finally { 803 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 804 } 805 return null; 806 } 807 808 /** 809 * Given the value and id, we can get the XML filename as in value.data, based on that, we 810 * first try to load CSL from the cache. If not found, try to get from the constant state. 811 * Last, parse the XML and generate the CSL. 812 */ 813 private ComplexColor loadComplexColorFromName(Resources wrapper, Resources.Theme theme, 814 TypedValue value, int id) { 815 final long key = (((long) value.assetCookie) << 32) | value.data; 816 final ConfigurationBoundResourceCache<ComplexColor> cache = mComplexColorCache; 817 ComplexColor complexColor = cache.getInstance(key, wrapper, theme); 818 if (complexColor != null) { 819 return complexColor; 820 } 821 822 final android.content.res.ConstantState<ComplexColor> factory = 823 sPreloadedComplexColors.get(key); 824 825 if (factory != null) { 826 complexColor = factory.newInstance(wrapper, theme); 827 } 828 if (complexColor == null) { 829 complexColor = loadComplexColorForCookie(wrapper, value, id, theme); 830 } 831 832 if (complexColor != null) { 833 complexColor.setBaseChangingConfigurations(value.changingConfigurations); 834 835 if (mPreloading) { 836 if (verifyPreloadConfig(complexColor.getChangingConfigurations(), 837 0, value.resourceId, "color")) { 838 sPreloadedComplexColors.put(key, complexColor.getConstantState()); 839 } 840 } else { 841 cache.put(key, theme, complexColor.getConstantState()); 842 } 843 } 844 return complexColor; 845 } 846 847 @Nullable 848 ComplexColor loadComplexColor(Resources wrapper, @NonNull TypedValue value, int id, 849 Resources.Theme theme) { 850 if (TRACE_FOR_PRELOAD) { 851 // Log only framework resources 852 if ((id >>> 24) == 0x1) { 853 final String name = getResourceName(id); 854 if (name != null) android.util.Log.d("loadComplexColor", name); 855 } 856 } 857 858 final long key = (((long) value.assetCookie) << 32) | value.data; 859 860 // Handle inline color definitions. 861 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT 862 && value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 863 return getColorStateListFromInt(value, key); 864 } 865 866 final String file = value.string.toString(); 867 868 ComplexColor complexColor; 869 if (file.endsWith(".xml")) { 870 try { 871 complexColor = loadComplexColorFromName(wrapper, theme, value, id); 872 } catch (Exception e) { 873 final NotFoundException rnf = new NotFoundException( 874 "File " + file + " from complex color resource ID #0x" 875 + Integer.toHexString(id)); 876 rnf.initCause(e); 877 throw rnf; 878 } 879 } else { 880 throw new NotFoundException( 881 "File " + file + " from drawable resource ID #0x" 882 + Integer.toHexString(id) + ": .xml extension required"); 883 } 884 885 return complexColor; 886 } 887 888 @Nullable 889 ColorStateList loadColorStateList(Resources wrapper, TypedValue value, int id, 890 Resources.Theme theme) 891 throws NotFoundException { 892 if (TRACE_FOR_PRELOAD) { 893 // Log only framework resources 894 if ((id >>> 24) == 0x1) { 895 final String name = getResourceName(id); 896 if (name != null) android.util.Log.d("PreloadColorStateList", name); 897 } 898 } 899 900 final long key = (((long) value.assetCookie) << 32) | value.data; 901 902 // Handle inline color definitions. 903 if (value.type >= TypedValue.TYPE_FIRST_COLOR_INT 904 && value.type <= TypedValue.TYPE_LAST_COLOR_INT) { 905 return getColorStateListFromInt(value, key); 906 } 907 908 ComplexColor complexColor = loadComplexColorFromName(wrapper, theme, value, id); 909 if (complexColor != null && complexColor instanceof ColorStateList) { 910 return (ColorStateList) complexColor; 911 } 912 913 throw new NotFoundException( 914 "Can't find ColorStateList from drawable resource ID #0x" 915 + Integer.toHexString(id)); 916 } 917 918 @NonNull 919 private ColorStateList getColorStateListFromInt(@NonNull TypedValue value, long key) { 920 ColorStateList csl; 921 final android.content.res.ConstantState<ComplexColor> factory = 922 sPreloadedComplexColors.get(key); 923 if (factory != null) { 924 return (ColorStateList) factory.newInstance(); 925 } 926 927 csl = ColorStateList.valueOf(value.data); 928 929 if (mPreloading) { 930 if (verifyPreloadConfig(value.changingConfigurations, 0, value.resourceId, 931 "color")) { 932 sPreloadedComplexColors.put(key, csl.getConstantState()); 933 } 934 } 935 936 return csl; 937 } 938 939 /** 940 * Load a ComplexColor based on the XML file content. The result can be a GradientColor or 941 * ColorStateList. Note that pure color will be wrapped into a ColorStateList. 942 * 943 * We deferred the parser creation to this function b/c we need to differentiate b/t gradient 944 * and selector tag. 945 * 946 * @return a ComplexColor (GradientColor or ColorStateList) based on the XML file content. 947 */ 948 @Nullable 949 private ComplexColor loadComplexColorForCookie(Resources wrapper, TypedValue value, int id, 950 Resources.Theme theme) { 951 if (value.string == null) { 952 throw new UnsupportedOperationException( 953 "Can't convert to ComplexColor: type=0x" + value.type); 954 } 955 956 final String file = value.string.toString(); 957 958 if (TRACE_FOR_MISS_PRELOAD) { 959 // Log only framework resources 960 if ((id >>> 24) == 0x1) { 961 final String name = getResourceName(id); 962 if (name != null) { 963 Log.d(TAG, "Loading framework ComplexColor #" + Integer.toHexString(id) 964 + ": " + name + " at " + file); 965 } 966 } 967 } 968 969 if (DEBUG_LOAD) { 970 Log.v(TAG, "Loading ComplexColor for cookie " + value.assetCookie + ": " + file); 971 } 972 973 ComplexColor complexColor = null; 974 975 Trace.traceBegin(Trace.TRACE_TAG_RESOURCES, file); 976 if (file.endsWith(".xml")) { 977 try { 978 final XmlResourceParser parser = loadXmlResourceParser( 979 file, id, value.assetCookie, "ComplexColor"); 980 981 final AttributeSet attrs = Xml.asAttributeSet(parser); 982 int type; 983 while ((type = parser.next()) != XmlPullParser.START_TAG 984 && type != XmlPullParser.END_DOCUMENT) { 985 // Seek parser to start tag. 986 } 987 if (type != XmlPullParser.START_TAG) { 988 throw new XmlPullParserException("No start tag found"); 989 } 990 991 final String name = parser.getName(); 992 if (name.equals("gradient")) { 993 complexColor = GradientColor.createFromXmlInner(wrapper, parser, attrs, theme); 994 } else if (name.equals("selector")) { 995 complexColor = ColorStateList.createFromXmlInner(wrapper, parser, attrs, theme); 996 } 997 parser.close(); 998 } catch (Exception e) { 999 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 1000 final NotFoundException rnf = new NotFoundException( 1001 "File " + file + " from ComplexColor resource ID #0x" 1002 + Integer.toHexString(id)); 1003 rnf.initCause(e); 1004 throw rnf; 1005 } 1006 } else { 1007 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 1008 throw new NotFoundException( 1009 "File " + file + " from drawable resource ID #0x" 1010 + Integer.toHexString(id) + ": .xml extension required"); 1011 } 1012 Trace.traceEnd(Trace.TRACE_TAG_RESOURCES); 1013 1014 return complexColor; 1015 } 1016 1017 /** 1018 * Loads an XML parser for the specified file. 1019 * 1020 * @param file the path for the XML file to parse 1021 * @param id the resource identifier for the file 1022 * @param assetCookie the asset cookie for the file 1023 * @param type the type of resource (used for logging) 1024 * @return a parser for the specified XML file 1025 * @throws NotFoundException if the file could not be loaded 1026 */ 1027 @NonNull 1028 XmlResourceParser loadXmlResourceParser(@NonNull String file, @AnyRes int id, int assetCookie, 1029 @NonNull String type) 1030 throws NotFoundException { 1031 if (id != 0) { 1032 try { 1033 synchronized (mCachedXmlBlocks) { 1034 final int[] cachedXmlBlockCookies = mCachedXmlBlockCookies; 1035 final String[] cachedXmlBlockFiles = mCachedXmlBlockFiles; 1036 final XmlBlock[] cachedXmlBlocks = mCachedXmlBlocks; 1037 // First see if this block is in our cache. 1038 final int num = cachedXmlBlockFiles.length; 1039 for (int i = 0; i < num; i++) { 1040 if (cachedXmlBlockCookies[i] == assetCookie && cachedXmlBlockFiles[i] != null 1041 && cachedXmlBlockFiles[i].equals(file)) { 1042 return cachedXmlBlocks[i].newParser(); 1043 } 1044 } 1045 1046 // Not in the cache, create a new block and put it at 1047 // the next slot in the cache. 1048 final XmlBlock block = mAssets.openXmlBlockAsset(assetCookie, file); 1049 if (block != null) { 1050 final int pos = (mLastCachedXmlBlockIndex + 1) % num; 1051 mLastCachedXmlBlockIndex = pos; 1052 final XmlBlock oldBlock = cachedXmlBlocks[pos]; 1053 if (oldBlock != null) { 1054 oldBlock.close(); 1055 } 1056 cachedXmlBlockCookies[pos] = assetCookie; 1057 cachedXmlBlockFiles[pos] = file; 1058 cachedXmlBlocks[pos] = block; 1059 return block.newParser(); 1060 } 1061 } 1062 } catch (Exception e) { 1063 final NotFoundException rnf = new NotFoundException("File " + file 1064 + " from xml type " + type + " resource ID #0x" + Integer.toHexString(id)); 1065 rnf.initCause(e); 1066 throw rnf; 1067 } 1068 } 1069 1070 throw new NotFoundException("File " + file + " from xml type " + type + " resource ID #0x" 1071 + Integer.toHexString(id)); 1072 } 1073 1074 /** 1075 * Start preloading of resource data using this Resources object. Only 1076 * for use by the zygote process for loading common system resources. 1077 * {@hide} 1078 */ 1079 public final void startPreloading() { 1080 synchronized (sSync) { 1081 if (sPreloaded) { 1082 throw new IllegalStateException("Resources already preloaded"); 1083 } 1084 sPreloaded = true; 1085 mPreloading = true; 1086 mConfiguration.densityDpi = DisplayMetrics.DENSITY_DEVICE; 1087 updateConfiguration(null, null, null); 1088 } 1089 } 1090 1091 /** 1092 * Called by zygote when it is done preloading resources, to change back 1093 * to normal Resources operation. 1094 */ 1095 void finishPreloading() { 1096 if (mPreloading) { 1097 mPreloading = false; 1098 flushLayoutCache(); 1099 } 1100 } 1101 1102 LongSparseArray<Drawable.ConstantState> getPreloadedDrawables() { 1103 return sPreloadedDrawables[0]; 1104 } 1105 1106 ThemeImpl newThemeImpl() { 1107 return new ThemeImpl(); 1108 } 1109 1110 /** 1111 * Creates a new ThemeImpl which is already set to the given Resources.ThemeKey. 1112 */ 1113 ThemeImpl newThemeImpl(Resources.ThemeKey key) { 1114 ThemeImpl impl = new ThemeImpl(); 1115 impl.mKey.setTo(key); 1116 impl.rebase(); 1117 return impl; 1118 } 1119 1120 public class ThemeImpl { 1121 /** 1122 * Unique key for the series of styles applied to this theme. 1123 */ 1124 private final Resources.ThemeKey mKey = new Resources.ThemeKey(); 1125 1126 @SuppressWarnings("hiding") 1127 private final AssetManager mAssets; 1128 private final long mTheme; 1129 1130 /** 1131 * Resource identifier for the theme. 1132 */ 1133 private int mThemeResId = 0; 1134 1135 /*package*/ ThemeImpl() { 1136 mAssets = ResourcesImpl.this.mAssets; 1137 mTheme = mAssets.createTheme(); 1138 } 1139 1140 @Override 1141 protected void finalize() throws Throwable { 1142 super.finalize(); 1143 mAssets.releaseTheme(mTheme); 1144 } 1145 1146 /*package*/ Resources.ThemeKey getKey() { 1147 return mKey; 1148 } 1149 1150 /*package*/ long getNativeTheme() { 1151 return mTheme; 1152 } 1153 1154 /*package*/ int getAppliedStyleResId() { 1155 return mThemeResId; 1156 } 1157 1158 void applyStyle(int resId, boolean force) { 1159 synchronized (mKey) { 1160 AssetManager.applyThemeStyle(mTheme, resId, force); 1161 1162 mThemeResId = resId; 1163 mKey.append(resId, force); 1164 } 1165 } 1166 1167 void setTo(ThemeImpl other) { 1168 synchronized (mKey) { 1169 synchronized (other.mKey) { 1170 AssetManager.copyTheme(mTheme, other.mTheme); 1171 1172 mThemeResId = other.mThemeResId; 1173 mKey.setTo(other.getKey()); 1174 } 1175 } 1176 } 1177 1178 @NonNull 1179 TypedArray obtainStyledAttributes(@NonNull Resources.Theme wrapper, 1180 AttributeSet set, 1181 @StyleableRes int[] attrs, 1182 @AttrRes int defStyleAttr, 1183 @StyleRes int defStyleRes) { 1184 synchronized (mKey) { 1185 final int len = attrs.length; 1186 final TypedArray array = TypedArray.obtain(wrapper.getResources(), len); 1187 1188 // XXX note that for now we only work with compiled XML files. 1189 // To support generic XML files we will need to manually parse 1190 // out the attributes from the XML file (applying type information 1191 // contained in the resources and such). 1192 final XmlBlock.Parser parser = (XmlBlock.Parser) set; 1193 AssetManager.applyStyle(mTheme, defStyleAttr, defStyleRes, 1194 parser != null ? parser.mParseState : 0, 1195 attrs, attrs.length, array.mDataAddress, array.mIndicesAddress); 1196 array.mTheme = wrapper; 1197 array.mXml = parser; 1198 1199 return array; 1200 } 1201 } 1202 1203 @NonNull 1204 TypedArray resolveAttributes(@NonNull Resources.Theme wrapper, 1205 @NonNull int[] values, 1206 @NonNull int[] attrs) { 1207 synchronized (mKey) { 1208 final int len = attrs.length; 1209 if (values == null || len != values.length) { 1210 throw new IllegalArgumentException( 1211 "Base attribute values must the same length as attrs"); 1212 } 1213 1214 final TypedArray array = TypedArray.obtain(wrapper.getResources(), len); 1215 AssetManager.resolveAttrs(mTheme, 0, 0, values, attrs, array.mData, array.mIndices); 1216 array.mTheme = wrapper; 1217 array.mXml = null; 1218 return array; 1219 } 1220 } 1221 1222 boolean resolveAttribute(int resid, TypedValue outValue, boolean resolveRefs) { 1223 synchronized (mKey) { 1224 return mAssets.getThemeValue(mTheme, resid, outValue, resolveRefs); 1225 } 1226 } 1227 1228 int[] getAllAttributes() { 1229 return mAssets.getStyleAttributes(getAppliedStyleResId()); 1230 } 1231 1232 @Config int getChangingConfigurations() { 1233 synchronized (mKey) { 1234 final @NativeConfig int nativeChangingConfig = 1235 AssetManager.getThemeChangingConfigurations(mTheme); 1236 return ActivityInfo.activityInfoConfigNativeToJava(nativeChangingConfig); 1237 } 1238 } 1239 1240 public void dump(int priority, String tag, String prefix) { 1241 synchronized (mKey) { 1242 AssetManager.dumpTheme(mTheme, priority, tag, prefix); 1243 } 1244 } 1245 1246 String[] getTheme() { 1247 synchronized (mKey) { 1248 final int N = mKey.mCount; 1249 final String[] themes = new String[N * 2]; 1250 for (int i = 0, j = N - 1; i < themes.length; i += 2, --j) { 1251 final int resId = mKey.mResId[j]; 1252 final boolean forced = mKey.mForce[j]; 1253 try { 1254 themes[i] = getResourceName(resId); 1255 } catch (NotFoundException e) { 1256 themes[i] = Integer.toHexString(i); 1257 } 1258 themes[i + 1] = forced ? "forced" : "not forced"; 1259 } 1260 return themes; 1261 } 1262 } 1263 1264 /** 1265 * Rebases the theme against the parent Resource object's current 1266 * configuration by re-applying the styles passed to 1267 * {@link #applyStyle(int, boolean)}. 1268 */ 1269 void rebase() { 1270 synchronized (mKey) { 1271 AssetManager.clearTheme(mTheme); 1272 1273 // Reapply the same styles in the same order. 1274 for (int i = 0; i < mKey.mCount; i++) { 1275 final int resId = mKey.mResId[i]; 1276 final boolean force = mKey.mForce[i]; 1277 AssetManager.applyThemeStyle(mTheme, resId, force); 1278 } 1279 } 1280 } 1281 } 1282} 1283