Android-阻止新的呼出事件循环?

BroadcastReceiver ACTION_CALL

public void onReceive(Context context, Intent intent)
{
    String action = intent.getAction();
    if (Intent.ACTION_NEW_OUTGOING_CALL.equals(action)) {
        String number = getResultData();
        if (number.startsWith(BYPASS_PREFIX)) {
             setResultData(number.substring(BYPASS_PREFIX.length()));
        } else {
             // do additional processing
        }
    }
}