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  3. android.content.ComponentCallbacks2

Java 类android.content.ComponentCallbacks2 实例源码

项目：chromium-net-for-android    文件：MemoryPressureListener.java    
@CalledByNative
private static void registerSystemCallback(Context context) {
    context.registerComponentCallbacks(
            new ComponentCallbacks2() {
                @Override
                public void onTrimMemory(int level) {
                    maybeNotifyMemoryPresure(level);
                }

                @Override
                public void onLowMemory() {
                    nativeOnMemoryPressure(MemoryPressureLevel.CRITICAL);
                }

                @Override
                public void onConfigurationChanged(Configuration configuration) {
                }
            });
}
项目：chromium-net-for-android    文件：AdvancedMockContextTest.java    
@SmallTest
public void testComponentCallbacksForTargetContext() {
    Context targetContext = getInstrumentation().getTargetContext();
    Application targetApplication = (Application) targetContext.getApplicationContext();
    AdvancedMockContext context = new AdvancedMockContext(targetContext);
    Callback1 callback1 = new Callback1();
    Callback2 callback2 = new Callback2();
    context.registerComponentCallbacks(callback1);
    context.registerComponentCallbacks(callback2);

    targetApplication.onLowMemory();
    assertTrue("onLowMemory should have been called.", callback1.mOnLowMemoryCalled);
    assertTrue("onLowMemory should have been called.", callback2.mOnLowMemoryCalled);

    Configuration configuration = new Configuration();
    targetApplication.onConfigurationChanged(configuration);
    assertEquals("onConfigurationChanged should have been called.", configuration,
            callback1.mConfiguration);
    assertEquals("onConfigurationChanged should have been called.", configuration,
            callback2.mConfiguration);

    targetApplication.onTrimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE);
    assertEquals("onTrimMemory should have been called.", ComponentCallbacks2
            .TRIM_MEMORY_MODERATE, callback2.mLevel);
}
项目：chromium-net-for-android    文件：MemoryPressureListener.java    
/**
 * Used by applications to simulate a memory pressure signal. By throwing certain intent
 * actions.
 */
public static boolean handleDebugIntent(Activity activity, String action) {
    if (ACTION_LOW_MEMORY.equals(action)) {
        simulateLowMemoryPressureSignal(activity);
    } else if (ACTION_TRIM_MEMORY.equals(action)) {
        simulateTrimMemoryPressureSignal(activity, ComponentCallbacks2.TRIM_MEMORY_COMPLETE);
    } else if (ACTION_TRIM_MEMORY_RUNNING_CRITICAL.equals(action)) {
        simulateTrimMemoryPressureSignal(activity,
                ComponentCallbacks2.TRIM_MEMORY_RUNNING_CRITICAL);
    } else if (ACTION_TRIM_MEMORY_MODERATE.equals(action)) {
        simulateTrimMemoryPressureSignal(activity, ComponentCallbacks2.TRIM_MEMORY_MODERATE);
    } else {
        return false;
    }

    return true;
}
项目：google-books-android-viewer    文件：BookListActivity.java    
@Override
public void onTrimMemory(int level) {
  switch (level) {
    case ComponentCallbacks2.TRIM_MEMORY_RUNNING_MODERATE:
    case ComponentCallbacks2.TRIM_MEMORY_RUNNING_LOW:
    case ComponentCallbacks2.TRIM_MEMORY_RUNNING_CRITICAL:

      Log.d(TAG, "Memory trimmed");
      FragmentManager fragmentManager = getFragmentManager();
      BookListFragment lf = (BookListFragment) fragmentManager.findFragmentById(R.id.book_list);
      lf.adapter.getModel().lowMemory();

    default:
      break;
  }
}
项目：RNLearn_Project1    文件：MemoryPressureRouter.java    
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public static boolean handleDebugIntent(Application application, String action) {
  switch (action) {
    case ACTION_TRIM_MEMORY_UI_HIDDEN:
      simulateTrimMemory(application, ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN);
      break;
    case ACTION_TRIM_MEMORY_MODERATE:
      simulateTrimMemory(application, TRIM_MEMORY_MODERATE);
      break;
    case ACTION_TRIM_MEMORY_CRITICAL:
      simulateTrimMemory(application, TRIM_MEMORY_COMPLETE);
    default:
      return false;
  }

  return true;
}
项目：RNLearn_Project1    文件：MemoryPressureRouter.java    
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public static boolean handleDebugIntent(Application application, String action) {
  switch (action) {
    case ACTION_TRIM_MEMORY_UI_HIDDEN:
      simulateTrimMemory(application, ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN);
      break;
    case ACTION_TRIM_MEMORY_MODERATE:
      simulateTrimMemory(application, TRIM_MEMORY_MODERATE);
      break;
    case ACTION_TRIM_MEMORY_CRITICAL:
      simulateTrimMemory(application, TRIM_MEMORY_COMPLETE);
    default:
      return false;
  }

  return true;
}
项目：Audinaut    文件：DownloadService.java    
@Override
public void onTrimMemory(int level) {
    ImageLoader imageLoader = SubsonicActivity.getStaticImageLoader(this);
    if(imageLoader != null) {
        Log.i(TAG, "Memory Trim Level: " + level);
        if (level < ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN) {
            if (level >= ComponentCallbacks2.TRIM_MEMORY_RUNNING_CRITICAL) {
                imageLoader.onLowMemory(0.75f);
            } else if (level >= ComponentCallbacks2.TRIM_MEMORY_RUNNING_LOW) {
                imageLoader.onLowMemory(0.50f);
            } else if(level >= ComponentCallbacks2.TRIM_MEMORY_RUNNING_MODERATE) {
                imageLoader.onLowMemory(0.25f);
            }
        } else if (level >= ComponentCallbacks2.TRIM_MEMORY_MODERATE) {
            imageLoader.onLowMemory(0.25f);
        } else if(level >= ComponentCallbacks2.TRIM_MEMORY_COMPLETE) {
            imageLoader.onLowMemory(0.75f);
        }
    }
}
项目：Ironman    文件：MemoryPressureRouter.java    
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public static boolean handleDebugIntent(Application application, String action) {
  switch (action) {
    case ACTION_TRIM_MEMORY_UI_HIDDEN:
      simulateTrimMemory(application, ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN);
      break;
    case ACTION_TRIM_MEMORY_MODERATE:
      simulateTrimMemory(application, TRIM_MEMORY_MODERATE);
      break;
    case ACTION_TRIM_MEMORY_CRITICAL:
      simulateTrimMemory(application, TRIM_MEMORY_COMPLETE);
    default:
      return false;
  }

  return true;
}
项目：react-native-music-control    文件：MusicControlModule.java    
@Override
public void onTrimMemory(int level) {
    switch(level) {
        // Trims memory when it reaches a moderate level and the session is inactive
        case ComponentCallbacks2.TRIM_MEMORY_MODERATE:
        case ComponentCallbacks2.TRIM_MEMORY_RUNNING_MODERATE:
            if(session.isActive()) break;

        // Trims memory when it reaches a critical level
        case ComponentCallbacks2.TRIM_MEMORY_COMPLETE:
        case ComponentCallbacks2.TRIM_MEMORY_RUNNING_CRITICAL:

            Log.w("MusicControl", "Control resources are being removed due to system's low memory (Level: " + level + ")");
            destroy();
            break;
    }
}
项目：ExhibitionCenter    文件：ImageLoader.java    
public void start() {

            //自动回收内存
            imageView.getContext().registerComponentCallbacks(new ComponentCallbacks2() {
                @Override
                public void onTrimMemory(int level) {
                    LogUtils.log().addMsg("内存较低，自动回收内存缓存,Level:" + level).build().execute();
                    clearMemCache(level);
                }

                @Override
                public void onConfigurationChanged(Configuration newConfig) {
                }

                @Override
                public void onLowMemory() {
                    LogUtils.log().addMsg("内存不足，自动清空内存缓存").build().execute();
                    clearMemCache();
                }
            });

            new ImageLoader(this).start();
        }
项目：365browser    文件：MemoryPressureListener.java    
@CalledByNative
private static void registerSystemCallback() {
    ContextUtils.getApplicationContext().registerComponentCallbacks(
            new ComponentCallbacks2() {
                @Override
                public void onTrimMemory(int level) {
                    maybeNotifyMemoryPresure(level);
                }

                @Override
                public void onLowMemory() {
                    nativeOnMemoryPressure(MemoryPressureLevel.CRITICAL);
                }

                @Override
                public void onConfigurationChanged(Configuration configuration) {
                }
            });
}
项目：365browser    文件：MemoryPressureListener.java    
/**
 * Used by applications to simulate a memory pressure signal. By throwing certain intent
 * actions.
 */
public static boolean handleDebugIntent(Activity activity, String action) {
    if (ACTION_LOW_MEMORY.equals(action)) {
        simulateLowMemoryPressureSignal(activity);
    } else if (ACTION_TRIM_MEMORY.equals(action)) {
        simulateTrimMemoryPressureSignal(activity, ComponentCallbacks2.TRIM_MEMORY_COMPLETE);
    } else if (ACTION_TRIM_MEMORY_RUNNING_CRITICAL.equals(action)) {
        simulateTrimMemoryPressureSignal(activity,
                ComponentCallbacks2.TRIM_MEMORY_RUNNING_CRITICAL);
    } else if (ACTION_TRIM_MEMORY_MODERATE.equals(action)) {
        simulateTrimMemoryPressureSignal(activity, ComponentCallbacks2.TRIM_MEMORY_MODERATE);
    } else {
        return false;
    }

    return true;
}
项目：365browser    文件：MemoryMonitorAndroid.java    
/**
 * Register ComponentCallbacks2 to receive memory pressure signals.
 *
 */
@CalledByNative
private static void registerComponentCallbacks() {
    sCallbacks = new ComponentCallbacks2() {
            @Override
            public void onTrimMemory(int level) {
                if (level != ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN) {
                    nativeOnTrimMemory(level);
                }
            }
            @Override
            public void onLowMemory() {
                // Don't support old onLowMemory().
            }
            @Override
            public void onConfigurationChanged(Configuration config) {
            }
        };
    ContextUtils.getApplicationContext().registerComponentCallbacks(sCallbacks);
}
项目：Popeens-DSub    文件：DownloadService.java    
@Override
public void onTrimMemory(int level) {
    ImageLoader imageLoader = SubsonicActivity.getStaticImageLoader(this);
    if(imageLoader != null && Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
        Log.i(TAG, "Memory Trim Level: " + level);
        if (level < ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN) {
            if (level >= ComponentCallbacks2.TRIM_MEMORY_RUNNING_CRITICAL) {
                imageLoader.onLowMemory(0.75f);
            } else if (level >= ComponentCallbacks2.TRIM_MEMORY_RUNNING_LOW) {
                imageLoader.onLowMemory(0.50f);
            } else if(level >= ComponentCallbacks2.TRIM_MEMORY_RUNNING_MODERATE) {
                imageLoader.onLowMemory(0.25f);
            }
        } else if (level >= ComponentCallbacks2.TRIM_MEMORY_MODERATE) {
            imageLoader.onLowMemory(0.25f);
        } else if(level >= ComponentCallbacks2.TRIM_MEMORY_COMPLETE) {
            imageLoader.onLowMemory(0.75f);
        }
    }
}
项目：Android-Fast-Image-Loader    文件：MemoryPoolImpl.java    
@Override
public void onTrimMemory(int level) {
    switch (level) {
        case ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN:
            releaseUnUsedBitmaps(3);
            break;
        case ComponentCallbacks2.TRIM_MEMORY_BACKGROUND:
            releaseUnUsedBitmaps(1);
            break;
        case ComponentCallbacks2.TRIM_MEMORY_MODERATE:
        case ComponentCallbacks2.TRIM_MEMORY_RUNNING_MODERATE:
        case ComponentCallbacks2.TRIM_MEMORY_RUNNING_LOW:
        case ComponentCallbacks2.TRIM_MEMORY_RUNNING_CRITICAL:
        case ComponentCallbacks2.TRIM_MEMORY_COMPLETE:
            releaseUnUsedBitmaps(0);
            break;
    }
}
项目：droidel    文件：ActivityThread.java    
final void handleLowMemory() {
    ArrayList<ComponentCallbacks2> callbacks = collectComponentCallbacks(true, null);

    final int N = callbacks.size();
    for (int i=0; i<N; i++) {
        callbacks.get(i).onLowMemory();
    }

    // Ask SQLite to free up as much memory as it can, mostly from its page caches.
    if (Process.myUid() != Process.SYSTEM_UID) {
        int sqliteReleased = SQLiteDatabase.releaseMemory();
        EventLog.writeEvent(SQLITE_MEM_RELEASED_EVENT_LOG_TAG, sqliteReleased);
    }

    // Ask graphics to free up as much as possible (font/image caches)
    Canvas.freeCaches();

    // Ask text layout engine to free also as much as possible
    Canvas.freeTextLayoutCaches();

    BinderInternal.forceGc("mem");
}
项目：CrossBow    文件：DefaultImageCache.java    
/**
 * @inheritDoc
 */
@Override
public void trimMemory(int level) {

    if(level >= ComponentCallbacks2.TRIM_MEMORY_COMPLETE) {
        emptyCache(); //dump the cache
    }
    else if (level >= ComponentCallbacks2.TRIM_MEMORY_MODERATE){
        trimCache(0.5f); // trim to half the max size
    }
    else if (level >= ComponentCallbacks2.TRIM_MEMORY_BACKGROUND){
        trimCache(0.7f); // trim to one seventh max size
    }
    else if (level >= ComponentCallbacks2.TRIM_MEMORY_RUNNING_CRITICAL){
        trimCache(0.2f); // trim to one fifth max size
    }
}
项目：android-chromium-view    文件：MemoryPressureListener.java    
@CalledByNative
private static void registerSystemCallback(Context context) {
    context.registerComponentCallbacks(
        new ComponentCallbacks2() {
              @Override
              public void onTrimMemory(int level) {
                  maybeNotifyMemoryPresure(level);
              }

              @Override
              public void onLowMemory() {
                  nativeOnMemoryPressure(MemoryPressureLevelList.MEMORY_PRESSURE_CRITICAL);
              }

              @Override
              public void onConfigurationChanged(Configuration configuration) {
              }
        });
}
项目：android-chromium    文件：MemoryPressureListener.java    
@CalledByNative
private static void registerSystemCallback(Context context) {
    context.registerComponentCallbacks(
        new ComponentCallbacks2() {
              @Override
              public void onTrimMemory(int level) {
                  maybeNotifyMemoryPresure(level);
              }

              @Override
              public void onLowMemory() {
                  nativeOnMemoryPressure(MemoryPressureLevelList.MEMORY_PRESSURE_CRITICAL);
              }

              @Override
              public void onConfigurationChanged(Configuration configuration) {
              }
        });
}
项目：android-chromium    文件：MemoryPressureListener.java    
/**
 * Used by applications to simulate a memory pressure signal. By throwing certain intent
 * actions.
 */
public static boolean handleDebugIntent(Activity activity, String action) {
    if (ACTION_LOW_MEMORY.equals(action)) {
        simulateLowMemoryPressureSignal(activity);
    } else if (ACTION_TRIM_MEMORY.equals(action)) {
        simulateTrimMemoryPressureSignal(activity, ComponentCallbacks2.TRIM_MEMORY_COMPLETE);
    } else if (ACTION_TRIM_MEMORY_RUNNING_CRITICAL.equals(action)) {
        simulateTrimMemoryPressureSignal(activity, ComponentCallbacks2.TRIM_MEMORY_MODERATE);
    } else if (ACTION_TRIM_MEMORY_MODERATE.equals(action)) {
        simulateTrimMemoryPressureSignal(activity,
                ComponentCallbacks2.TRIM_MEMORY_RUNNING_CRITICAL);
    } else {
        return false;
    }

    return true;
}
项目：chromium_webview    文件：MemoryPressureListener.java    
@CalledByNative
private static void registerSystemCallback(Context context) {
    context.registerComponentCallbacks(
            new ComponentCallbacks2() {
                @Override
                public void onTrimMemory(int level) {
                    maybeNotifyMemoryPresure(level);
                }

                @Override
                public void onLowMemory() {
                    nativeOnMemoryPressure(MemoryPressureLevelList.MEMORY_PRESSURE_CRITICAL);
                }

                @Override
                public void onConfigurationChanged(Configuration configuration) {
                }
            });
}
项目：chromium_webview    文件：MemoryPressureListener.java    
/**
 * Used by applications to simulate a memory pressure signal. By throwing certain intent
 * actions.
 */
public static boolean handleDebugIntent(Activity activity, String action) {
    if (ACTION_LOW_MEMORY.equals(action)) {
        simulateLowMemoryPressureSignal(activity);
    } else if (ACTION_TRIM_MEMORY.equals(action)) {
        simulateTrimMemoryPressureSignal(activity, ComponentCallbacks2.TRIM_MEMORY_COMPLETE);
    } else if (ACTION_TRIM_MEMORY_RUNNING_CRITICAL.equals(action)) {
        simulateTrimMemoryPressureSignal(activity, ComponentCallbacks2.TRIM_MEMORY_MODERATE);
    } else if (ACTION_TRIM_MEMORY_MODERATE.equals(action)) {
        simulateTrimMemoryPressureSignal(activity,
                ComponentCallbacks2.TRIM_MEMORY_RUNNING_CRITICAL);
    } else {
        return false;
    }

    return true;
}
项目：sketch    文件：SketchUtils.java    
/**
 * 获取修剪级别的名称
 */
public static String getTrimLevelName(int level) {
    switch (level) {
        case ComponentCallbacks2.TRIM_MEMORY_COMPLETE:
            return "COMPLETE";
        case ComponentCallbacks2.TRIM_MEMORY_MODERATE:
            return "MODERATE";
        case ComponentCallbacks2.TRIM_MEMORY_BACKGROUND:
            return "BACKGROUND";
        case ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN:
            return "UI_HIDDEN";
        case ComponentCallbacks2.TRIM_MEMORY_RUNNING_CRITICAL:
            return "RUNNING_CRITICAL";
        case ComponentCallbacks2.TRIM_MEMORY_RUNNING_LOW:
            return "RUNNING_LOW";
        case ComponentCallbacks2.TRIM_MEMORY_RUNNING_MODERATE:
            return "RUNNING_MODERATE";
        default:
            return "UNKNOWN";
    }
}
项目：cordova-android-chromium    文件：MemoryPressureListener.java    
@CalledByNative
private static void registerSystemCallback(Context context) {
    context.registerComponentCallbacks(
        new ComponentCallbacks2() {
              @Override
              public void onTrimMemory(int level) {
                  maybeNotifyMemoryPresure(level);
              }

              @Override
              public void onLowMemory() {
                  nativeOnMemoryPressure(MemoryPressureLevelList.MEMORY_PRESSURE_CRITICAL);
              }

              @Override
              public void onConfigurationChanged(Configuration configuration) {
              }
        });
}
项目：cordova-android-chromium    文件：MemoryPressureListener.java    
/**
 * Used by applications to simulate a memory pressure signal. By throwing certain intent
 * actions.
 */
public static boolean handleDebugIntent(Activity activity, String action) {
    if (ACTION_LOW_MEMORY.equals(action)) {
        simulateLowMemoryPressureSignal(activity);
    } else if (ACTION_TRIM_MEMORY.equals(action)) {
        simulateTrimMemoryPressureSignal(activity, ComponentCallbacks2.TRIM_MEMORY_COMPLETE);
    } else if (ACTION_TRIM_MEMORY_RUNNING_CRITICAL.equals(action)) {
        simulateTrimMemoryPressureSignal(activity, ComponentCallbacks2.TRIM_MEMORY_MODERATE);
    } else if (ACTION_TRIM_MEMORY_MODERATE.equals(action)) {
        simulateTrimMemoryPressureSignal(activity,
                ComponentCallbacks2.TRIM_MEMORY_RUNNING_CRITICAL);
    } else {
        return false;
    }

    return true;
}
项目：GitHub    文件：GlideContext.java    
public GlideContext(Context context, Registry registry,
    ImageViewTargetFactory imageViewTargetFactory, RequestOptions defaultRequestOptions,
    Engine engine, ComponentCallbacks2 componentCallbacks, int logLevel) {
  super(context.getApplicationContext());
  this.registry = registry;
  this.imageViewTargetFactory = imageViewTargetFactory;
  this.defaultRequestOptions = defaultRequestOptions;
  this.engine = engine;
  this.componentCallbacks = componentCallbacks;
  this.logLevel = logLevel;

  mainHandler = new Handler(Looper.getMainLooper());
}
项目：GitHub    文件：LruResourceCacheTest.java    
@Test
public void testTrimMemoryBackground() {
  TrimClearMemoryCacheHarness harness = new TrimClearMemoryCacheHarness();

  harness.resourceCache.trimMemory(ComponentCallbacks2.TRIM_MEMORY_BACKGROUND);

  verify(harness.listener).onResourceRemoved(eq(harness.first));
  verify(harness.listener).onResourceRemoved(eq(harness.second));
}
项目：GitHub    文件：LruResourceCacheTest.java    
@Test
public void testTrimMemoryModerate() {
  TrimClearMemoryCacheHarness harness = new TrimClearMemoryCacheHarness();

  harness.resourceCache.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE);

  verify(harness.listener).onResourceRemoved(harness.first);
  verify(harness.listener).onResourceRemoved(harness.second);
}
项目：GitHub    文件：LruResourceCacheTest.java    
@Test
public void testTrimMemoryUiHidden() {
  TrimClearMemoryCacheHarness harness = new TrimClearMemoryCacheHarness();

  harness.resourceCache.trimMemory(ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN);

  verify(harness.listener).onResourceRemoved(harness.first);
  verify(harness.listener, never()).onResourceRemoved(harness.second);
}
项目：GitHub    文件：LruResourceCacheTest.java    
@Test
public void testTrimMemoryBackground() {
  TrimClearMemoryCacheHarness harness = new TrimClearMemoryCacheHarness();

  harness.resourceCache.trimMemory(ComponentCallbacks2.TRIM_MEMORY_BACKGROUND);

  verify(harness.listener).onResourceRemoved(eq(harness.first));
  verify(harness.listener).onResourceRemoved(eq(harness.second));
}
项目：GitHub    文件：LruResourceCacheTest.java    
@Test
public void testTrimMemoryModerate() {
  TrimClearMemoryCacheHarness harness = new TrimClearMemoryCacheHarness();

  harness.resourceCache.trimMemory(ComponentCallbacks2.TRIM_MEMORY_MODERATE);

  verify(harness.listener).onResourceRemoved(harness.first);
  verify(harness.listener).onResourceRemoved(harness.second);
}
项目：GitHub    文件：LruResourceCacheTest.java    
@Test
public void testTrimMemoryUiHidden() {
  TrimClearMemoryCacheHarness harness = new TrimClearMemoryCacheHarness();

  harness.resourceCache.trimMemory(ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN);

  verify(harness.listener).onResourceRemoved(harness.first);
  verify(harness.listener, never()).onResourceRemoved(harness.second);
}
项目：GitHub    文件：LruResourceCacheTest.java    
@Test
public void testPreventEviction() {
  final MemoryCache cache = new LruResourceCache(100);
  final Resource<?> first = getResource(30);
  final Key firstKey = new MockKey();
  cache.put(firstKey, first);
  Resource<?> second = getResource(30);
  Key secondKey = new MockKey();
  cache.put(secondKey, second);
  Resource<?> third = getResource(30);
  Key thirdKey = new MockKey();
  cache.put(thirdKey, third);
  cache.setResourceRemovedListener(new ResourceRemovedListener() {
    @Override
    public void onResourceRemoved(Resource<?> removed) {
      if (removed == first) {
        cache.put(firstKey, first);
      }
    }
  });

  // trims from 100 to 50, having 30+30+30 items, it should trim to 1 item
  cache.trimMemory(ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN);

  // and that 1 item must be first, because it's forced to return to cache in the listener
  @SuppressWarnings("unchecked")
  LruCache<Key, Resource<?>> lruCache = (LruCache<Key, Resource<?>>) cache;
  assertTrue(lruCache.contains(firstKey));
  assertFalse(lruCache.contains(secondKey));
  assertFalse(lruCache.contains(thirdKey));
}
项目：LaunchEnr    文件：Launcher.java    
@Override
public void onTrimMemory(int level) {
    super.onTrimMemory(level);
    if (level >= ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN) {
        // The widget preview db can result in holding onto over
        // 3MB of memory for caching which isn't necessary.
        SQLiteDatabase.releaseMemory();

        // This clears all widget bitmaps from the widget tray
        // TODO(hyunyoungs)
    }
    if (mLauncherCallbacks != null) {
        mLauncherCallbacks.onTrimMemory(level);
    }
}
项目：chromium-net-for-android    文件：MemoryPressureListener.java    
public static void maybeNotifyMemoryPresure(int level) {
    if (level >= ComponentCallbacks2.TRIM_MEMORY_COMPLETE) {
        nativeOnMemoryPressure(MemoryPressureLevel.CRITICAL);
    } else if (level >= ComponentCallbacks2.TRIM_MEMORY_BACKGROUND
            || level == ComponentCallbacks2.TRIM_MEMORY_RUNNING_CRITICAL) {
        // Don't notifiy on TRIM_MEMORY_UI_HIDDEN, since this class only
        // dispatches actionable memory pressure signals to native.
        nativeOnMemoryPressure(MemoryPressureLevel.MODERATE);
    }
}
项目：okwallet    文件：BlockchainServiceImpl.java    
@Override
public void onTrimMemory(final int level) {
    log.info("onTrimMemory({}) called", level);

    if (level >= ComponentCallbacks2.TRIM_MEMORY_BACKGROUND) {
        log.warn("low memory detected, stopping service");
        stopSelf();
    }
}
项目：FlickLauncher    文件：Launcher.java    
@Override
public void onTrimMemory(int level) {
    super.onTrimMemory(level);
    if (level >= ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN) {
        // The widget preview db can result in holding onto over
        // 3MB of memory for caching which isn't necessary.
        SQLiteDatabase.releaseMemory();

        // This clears all widget bitmaps from the widget tray
        // TODO(hyunyoungs)
    }
    if (mLauncherCallbacks != null) {
        mLauncherCallbacks.onTrimMemory(level);
    }
}
项目：SimpleUILauncher    文件：Launcher.java    
@Override
public void onTrimMemory(int level) {
    super.onTrimMemory(level);
    if (level >= ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN) {
        // The widget preview db can result in holding onto over
        // 3MB of memory for caching which isn't necessary.
        SQLiteDatabase.releaseMemory();

        // This clears all widget bitmaps from the widget tray
        // TODO(hyunyoungs)
    }
    if (mLauncherCallbacks != null) {
        mLauncherCallbacks.onTrimMemory(level);
    }
}
项目：ReactNativeSignatureExample    文件：MemoryPressureRouter.java    
private void trimMemory(int level) {
  if (level >= ComponentCallbacks2.TRIM_MEMORY_COMPLETE) {
    dispatchMemoryPressure(MemoryPressure.CRITICAL);
  } else if (level >= TRIM_MEMORY_BACKGROUND || level == TRIM_MEMORY_RUNNING_CRITICAL) {
    dispatchMemoryPressure(MemoryPressure.MODERATE);
  }
}
项目：ello-android    文件：MainActivity.java    
@Override
public void onTrimMemory(int level) {
    super.onTrimMemory(level);
    if (level >= ComponentCallbacks2.TRIM_MEMORY_MODERATE) {
        shouldReload = true;
    }
}