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.ide.common.rendering.api.AssetRepository; 20 import com.android.layoutlib.bridge.Bridge; 21 22 public class BridgeAssetManager extends AssetManager { 23 24 private AssetRepository mAssetRepository; 25 26 /** 27 * This initializes the static field {@link AssetManager#sSystem} which is used 28 * by methods who get a global asset manager using {@link AssetManager#getSystem()}. 29 * <p/> 30 * They will end up using our bridge asset manager. 31 * <p/> 32 * {@link Bridge} calls this method after setting up a new bridge. 33 */ initSystem()34 public static AssetManager initSystem() { 35 if (!(AssetManager.sSystem instanceof BridgeAssetManager)) { 36 // Note that AssetManager() creates a system AssetManager and we override it 37 // with our BridgeAssetManager. 38 AssetManager.sSystem = new BridgeAssetManager(); 39 AssetManager.sSystem.makeStringBlocks(null); 40 } 41 return AssetManager.sSystem; 42 } 43 44 /** 45 * Clears the static {@link AssetManager#sSystem} to make sure we don't leave objects 46 * around that would prevent us from unloading the library. 47 */ clearSystem()48 public static void clearSystem() { 49 AssetManager.sSystem = null; 50 } 51 setAssetRepository(AssetRepository assetRepository)52 public void setAssetRepository(AssetRepository assetRepository) { 53 mAssetRepository = assetRepository; 54 } 55 getAssetRepository()56 public AssetRepository getAssetRepository() { 57 return mAssetRepository; 58 } 59 BridgeAssetManager()60 public BridgeAssetManager() { 61 } 62 } 63