1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 5 * in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the License 10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 11 * or implied. See the License for the specific language governing permissions and limitations under 12 * the License. 13 */ 14 package android.support.v17.leanback.app; 15 16 import android.app.Fragment; 17 18 /** 19 * Fragment used by the background manager. 20 * @hide 21 */ 22 public final class BackgroundFragment extends Fragment { 23 private BackgroundManager mBackgroundManager; 24 setBackgroundManager(BackgroundManager backgroundManager)25 void setBackgroundManager(BackgroundManager backgroundManager) { 26 mBackgroundManager = backgroundManager; 27 } 28 getBackgroundManager()29 BackgroundManager getBackgroundManager() { 30 return mBackgroundManager; 31 } 32 33 @Override onResume()34 public void onResume() { 35 super.onResume(); 36 // mBackgroundManager might be null: 37 // if BackgroundFragment is just restored by FragmentManager, 38 // and user does not call BackgroundManager.getInstance() yet. 39 if (mBackgroundManager != null) { 40 mBackgroundManager.onActivityResume(); 41 } 42 } 43 44 @Override onDestroy()45 public void onDestroy() { 46 super.onDestroy(); 47 // mBackgroundManager might be null: 48 // if BackgroundFragment is just restored by FragmentManager, 49 // and user does not call BackgroundManager.getInstance() yet. 50 if (mBackgroundManager != null) { 51 mBackgroundManager.detach(); 52 } 53 } 54 } 55