PackagesMonitor.java revision 2b3ee0ea07246b859a5b75d8a6102a7cce7ec838 
1/*
2 * Copyright (C) 2010 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
17package com.android.gallery3d.app;
18
19import android.content.BroadcastReceiver;
20import android.content.Context;
21import android.content.Intent;
22import android.content.SharedPreferences;
23import android.preference.PreferenceManager;
24
25import com.android.gallery3d.picasasource.PicasaSource;
26
27public class PackagesMonitor extends BroadcastReceiver {
28    public static final String KEY_PACKAGES_VERSION  = "packages-version";
29
30    public synchronized static int getPackagesVersion(Context context) {
31        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
32        return prefs.getInt(KEY_PACKAGES_VERSION, 1);
33    }
34
35    @Override
36    public void onReceive(Context context, Intent intent) {
37        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
38
39        int version = prefs.getInt(KEY_PACKAGES_VERSION, 1);
40        prefs.edit().putInt(KEY_PACKAGES_VERSION, version + 1).commit();
41
42        String action = intent.getAction();
43        String packageName = intent.getData().getSchemeSpecificPart();
44        if (Intent.ACTION_PACKAGE_ADDED.equals(action)) {
45            PicasaSource.onPackageAdded(context, packageName);
46        } else if (Intent.ACTION_PACKAGE_REMOVED.equals(action)) {
47            PicasaSource.onPackageRemoved(context, packageName);
48        } else if (Intent.ACTION_PACKAGE_CHANGED.equals(action)) {
49            PicasaSource.onPackageChanged(context, packageName);
50        }
51    }
52}
53