1 /* 2 * Copyright (C) 2008 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 17 package android.content.res; 18 19 import com.android.layoutlib.bridge.Bridge; 20 21 import android.content.res.AssetManager; 22 23 public class BridgeAssetManager extends AssetManager { 24 25 /** 26 * This initializes the static field {@link AssetManager#mSystem} which is used 27 * by methods who get a global asset manager using {@link AssetManager#getSystem()}. 28 * <p/> 29 * They will end up using our bridge asset manager. 30 * <p/> 31 * {@link Bridge} calls this method after setting up a new bridge. 32 */ 33 public static AssetManager initSystem() { 34 if (!(AssetManager.sSystem instanceof BridgeAssetManager)) { 35 // Note that AssetManager() creates a system AssetManager and we override it 36 // with our BridgeAssetManager. 37 AssetManager.sSystem = new BridgeAssetManager(); 38 AssetManager.sSystem.makeStringBlocks(false); 39 } 40 return AssetManager.sSystem; 41 } 42 43 /** 44 * Clears the static {@link AssetManager#sSystem} to make sure we don't leave objects 45 * around that would prevent us from unloading the library. 46 */ 47 public static void clearSystem() { 48 AssetManager.sSystem = null; 49 } 50 51 private BridgeAssetManager() { 52 } 53 } 54
