How to listen for sd card mount and unmount

file.java

private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        Log.d("TAG", intent.getAction());
    }
};

@Override
protected void onResume() {
    super.onResume();

    IntentFilter intentFilter = new IntentFilter();

    intentFilter.addAction(Intent.ACTION_MEDIA_MOUNTED);
    intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);

    intentFilter.addDataScheme("file");

    registerReceiver(broadcastReceiver, intentFilter);
}

@Override
protected void onPause() {
    super.onPause();

    unregisterReceiver(broadcastReceiver);
}