//判斷BroadCastReceiver是否存在PackageManager manager = getPackageManager();//要查找的BroadCastReceiverIntent intent = new Intent("com.xiaoqiu.Action.XXXXX");List<ResolveInfo> resolveInfos = manager.queryBroadcastReceivers(intent, PackageManager.GET_INTENT_FILTERS);if (resolveInfos.size() == 0) {Log.d("debug", "該BroadCast不存在");}//判斷包含某個Action的Activity的應用已經安裝Intent i = new Intent("com.xiaoqiu.phone.action.WAKAKA");List<ResolveInfo> resolveInfos1 = manager.queryIntentActivities(intent, PackageManager.GET_INTENT_FILTERS);if (resolveInfos.size() == 0) {Log.d("debug", "該應用沒有安裝");}//判斷AIDL Service是否存在if (!bindService(new Intent("com.xiaoqiu.service"), serviceConnection, Context.BIND_AUTO_CREATE)){Log.d("debug", "不存在");}//判斷指定的ContentProvider是否存在Uri uri = Uri.parse("content://mobile.android.regincontentprovider/cities");Cursor cursor = getContentResolver().query(uri, new String[]{"city_code as _id", "city_name"}, null, null, null);if (cursor == null) {Log.d("debug", "不存在");}

轉載于:https://www.cnblogs.com/tqj-zyy/archive/2013/05/14/4559782.html

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