安卓:如何通过点击按钮在活动中使用ringtone.stop

Question

我有我的广播接收器，当rintone是播放stopAlarm.java页面显示，如果按钮被按下，我想使用停止铃声。如何在stopAlarm.java中使用r.stop()

public class MyBroadcastReceiver extends BroadcastReceiver {
    public static final String NOTIFICATION_CHANNEL_ID = "10001" ;
    private final static String default_notification_channel_id = "default" ;


    @Override
    public void onReceive(Context context, Intent intent) {
    Uri notificationsound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_RINGTONE);
        Ringtone r = RingtoneManager.getRingtone(context,notificationsound);
        r.play();
        Intent i = new Intent(context,stopAlarm.class);
        i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(i);


    }

}

公共类stopAlarm扩展了AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_stop_alarm);
    Button stop = (Button)findViewById(R.id.stopAlarm);
    stop.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            //////////How can I get r
        }
    });

}

}

Answer 1

public class stopAlarm extends AppCompatActivity {

Ringtone r;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_stop_alarm);
    Button stop = (Button)findViewById(R.id.stopAlarm);
    stop.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            r.stop();
        }
    });

}