1 /* 2 * Copyright (C) 2013 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 com.android.camera.data; 18 19 import android.database.ContentObserver; 20 21 /** 22 * Listening to the changes to the local image and video data. onChange will 23 * happen on the main thread. 24 */ 25 public class LocalMediaObserver extends ContentObserver { 26 27 private boolean mActivityPaused = false; 28 private boolean mMediaDataChangedDuringPause = false; 29 LocalMediaObserver()30 public LocalMediaObserver() { 31 super(null); 32 } 33 34 /** 35 * When the activity is paused and MediaObserver get onChange() call, then 36 * we would like to set a dirty bit to reload the data at onResume(). 37 */ 38 @Override onChange(boolean selfChange)39 public void onChange(boolean selfChange) { 40 if (mActivityPaused) { 41 mMediaDataChangedDuringPause = true; 42 } 43 } 44 setActivityPaused(boolean paused)45 public void setActivityPaused(boolean paused) { 46 mActivityPaused = paused; 47 if (!paused) { 48 mMediaDataChangedDuringPause = false; 49 } 50 } 51 isMediaDataChangedDuringPause()52 public boolean isMediaDataChangedDuringPause() { 53 return mMediaDataChangedDuringPause; 54 } 55 } 56