android设立wallpaper

android设置wallpaper
设置壁纸的代码在
Launcher.java中的case AddAdapter.ITEM_WALLPAPER: {
                    startWallpaper();
                    break;
                }
中，

private void startWallpaper() {        closeAllApps(true);        final Intent pickWallpaper = new Intent(Intent.ACTION_SET_WALLPAPER);        Intent chooser = Intent.createChooser(pickWallpaper,                getText(R.string.chooser_wallpaper));        // NOTE: Adds a configure option to the chooser if the wallpaper supports it        //       Removed in Eclair MR1//        WallpaperManager wm = (WallpaperManager)//                getSystemService(Context.WALLPAPER_SERVICE);//        WallpaperInfo wi = wm.getWallpaperInfo();//        if (wi != null && wi.getSettingsActivity() != null) {//            LabeledIntent li = new LabeledIntent(getPackageName(),//                    R.string.configure_wallpaper, 0);//            li.setClassName(wi.getPackageName(), wi.getSettingsActivity());//            chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Intent[] { li });//        }        startActivityForResult(chooser, REQUEST_PICK_WALLPAPER);    }

这个action是WallpaperChooser.java来响应的。

<activity            android:name="com.android.launcher2.WallpaperChooser"            android:label="@string/pick_wallpaper"            android:icon="@drawable/ic_launcher_wallpaper"            android:screenOrientation="nosensor"            android:finishOnCloseSystemDialogs="true">            <intent-filter>                <action android:name="android.intent.action.SET_WALLPAPER" />                <category android:name="android.intent.category.DEFAULT" />            </intent-filter>        </activity> 

在WallpaperChooser中通过

addWallpapers(resources, packageName, R.array.wallpapers);        addWallpapers(resources, packageName, R.array.extra_wallpapers);

来设置，找到wallpapers.xml就行了。