android - 设置为重复时如何取消 PendingIntent？

Question

我有这个...

button = (Button) findViewById(R.id.start_repeating);
button.setOnClickListener(new OnClickListener() {
    public void onClick(View v) {
        Intent intent = new Intent(Test.this, RepeatingAlarm.class);
        PendingIntent sender = PendingIntent.getBroadcast(Test.this, 0, intent, 0);
        long firstTime = SystemClock.elapsedRealtime();
        firstTime += 1 * 1000;
        AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
        am.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, firstTime, 1 * 1000, sender);
        if (mToast != null) {
            mToast.cancel();
        }
        mToast = Toast.makeText(Test.this, "repeating_scheduled", Toast.LENGTH_LONG).show();
    }
});

button = (Button) findViewById(R.id.stop_repeating);
button.setOnClickListener(new OnClickListener() {
    public void onClick(View v) {
        Intent intent = new Intent(Test.this, RepeatingAlarm.class);
        PendingIntent sender = PendingIntent.getBroadcast(Test.this, 0, intent, 0);
        AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
        am.cancel(sender);
        if (mToast != null) {
            mToast.cancel();
        }
        mToast = Toast.makeText(Test.this, "repeating_unscheduled", Toast.LENGTH_LONG).show();
    }
});

但它似乎无法正常工作...每次我尝试单击第二个按钮时警报都不会取消...这是我正在使用的 BroadcastReceiver...

public class RepeatingAlarm extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        for(int i=0;i<5;i++)
            Toast.makeText(context, "repeating_received " + i, Toast.LENGTH_SHORT).show();
    }
}

请告诉我哪里出了问题!!!谢谢!!

Answer 1

如果您保存对未决 Intent 的引用，那么您可以只使用 AlarmManager.cancel() .

传递您的待处理 Intent ，一切就绪。