1 /* 2 * Copyright (C) 2009 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.wallpaper.livepicker; 18 19 import java.io.IOException; 20 import java.util.List; 21 22 import org.xmlpull.v1.XmlPullParserException; 23 24 import android.app.Activity; 25 import android.app.WallpaperInfo; 26 import android.app.WallpaperManager; 27 import android.os.Bundle; 28 import android.os.Parcelable; 29 import android.content.ComponentName; 30 import android.content.Intent; 31 import android.content.pm.PackageManager; 32 import android.content.pm.PackageManager.NameNotFoundException; 33 import android.content.pm.ResolveInfo; 34 import android.content.pm.ServiceInfo; 35 import android.service.wallpaper.WallpaperService; 36 import android.util.Log; 37 38 public class LiveWallpaperChange extends Activity { 39 private static final String TAG = "CHANGE_LIVE_WALLPAPER"; 40 41 @Override 42 protected void onCreate(Bundle savedInstanceState) { 43 super.onCreate(savedInstanceState); 44 45 Parcelable obj = getIntent().getParcelableExtra( 46 WallpaperManager.EXTRA_LIVE_WALLPAPER_COMPONENT); 47 if (obj == null || !(obj instanceof ComponentName)) { 48 Log.w(TAG, "No LIVE_WALLPAPER_COMPONENT extra supplied"); 49 finish(); 50 return; 51 } 52 53 ComponentName comp = (ComponentName)obj; 54 55 // Get the information about this component. Implemented this way 56 // to not allow us to direct the caller to a service that is not a 57 // live wallpaper. 58 Intent queryIntent = new Intent(WallpaperService.SERVICE_INTERFACE); 59 queryIntent.setPackage(comp.getPackageName()); 60 List<ResolveInfo> list = getPackageManager().queryIntentServices( 61 queryIntent, PackageManager.GET_META_DATA); 62 if (list != null) { 63 for (int i=0; i<list.size(); i++) { 64 ResolveInfo ri = list.get(i); 65 if (ri.serviceInfo.name.equals(comp.getClassName())) { 66 WallpaperInfo info = null; 67 try { 68 info = new WallpaperInfo(this, ri); 69 } catch (XmlPullParserException e) { 70 Log.w(TAG, "Bad wallpaper " + ri.serviceInfo, e); 71 finish(); 72 return; 73 } catch (IOException e) { 74 Log.w(TAG, "Bad wallpaper " + ri.serviceInfo, e); 75 finish(); 76 return; 77 } 78 Intent intent = new Intent(WallpaperService.SERVICE_INTERFACE); 79 intent.setClassName(info.getPackageName(), info.getServiceName()); 80 LiveWallpaperPreview.showPreview(this, 0, intent, info); 81 finish(); 82 return; 83 } 84 } 85 } 86 87 Log.w(TAG, "Not a live wallpaper: " + comp); 88 finish(); 89 } 90 } 91
