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broadcastRec = new SDcardBroadcastReceiver();
IntentFilter intentFilter = new IntentFilter(
Intent.ACTION_MEDIA_MOUNTED);
intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
intentFilter.addAction(Intent.ACTION_MEDIA_REMOVED);
intentFilter.addAction(Intent.ACTION_MEDIA_BAD_REMOVAL);
intentFilter.addDataScheme("file");
registerReceiver(broadcastRec, intentFilter);