/**
 * Show message by alert
 * @param message
 * @param c current context
 */
private void _showAlert(final String message, final Context c) {
	Builder builder = new AlertDialog.Builder(c);
	builder.setMessage(message);
	builder.setPositiveButton(android.R.string.ok,
		new DialogInterface.OnClickListener() {
			public void onClick(DialogInterface dialog, int which) {
					// do nothing
				}
			});
	AlertDialog dialog = builder.create();
	dialog.show();
}
 
 
/**
 * Show context on UiThread
 * @param message
 * @param current context
 */
private void showToast(final String msg, final Context c) {
	Runnable showToastTask = new Runnable() {
		public void run() {
			Toast.makeText(c, msg, Toast.LENGTH_SHORT).show();
		}
	};
	runOnUiThread(showToastTask);
}