如何完全关闭 activity 以便我可以阻止用户启动 activity

Question

我使用 AlarmManager 在特定时间启动 activity

Intent intent = new Intent(getApplicationContext(),AlarmActivity.class);
PendingIntent sender = PendingIntent.getActivity(getApplicationContext(), 0, intent, 0);

Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR, 24);
calendar.set(Calendar.HOUR_OF_DAY, 7);
calendar.set(Calendar.MINUTE, 30);
calendar.set(Calendar.SECOND, 0);

AlarmManager am = (AlarmManager) getApplicationContext().getSystemService(getApplicationContext().ALARM_SERVICE);
am.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), sender);

这是AlarmActivity的代码，当activity启动时，它会播放警报声，如果用户点击屏幕，警报将被解除。

public class AlarmActivity extends Activity {

    MediaPlayer mediaPlayer;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_alarm);
        View v =((ViewGroup)findViewById(android.R.id.content)).getChildAt(0);
        v.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                finish();
            }
        });

        try {
            Uri notification = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM);
            mediaPlayer = new MediaPlayer();
            mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
            mediaPlayer.setLooping(true);
            mediaPlayer.setDataSource(this, notification);
            mediaPlayer.prepare();
            mediaPlayer.start();
        }
        catch(Exception e)
        {
        }


    }

    public void onDestroy() {
        super.onDestroy();
        mediaPlayer.stop();
        mediaPlayer.release();

    }

}

当这个activity关闭时，它仍然在最近的应用程序列表中，如果用户点击最近的应用程序，这个activity会再次启动并播放声音

这个我也试过了，但是没用

android.os.Process.killProcess(android.os.Process.myPid());

AlarmActivity 只能由 AlarmManager 启动，用户不应启动它。我怎样才能完全关闭我的应用程序？

Answer 1

在您的 activity

的清单中使用 android:excludeFromRecents="true"

http://developer.android.com/guide/topics/manifest/activity-element.html#exclude

Answer 2

您可以使用以下标志：

FLAG_ACTIVITY_CLEAR_TOP

FLAG_ACTIVITY_SINGLE_TOP

FLAG_ACTIVITY_CLEAR_TASK

FLAG_ACTIVITY_NEW_TASK

您需要设置

intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);

低于

Intent intent = new Intent(getApplicationContext(),AlarmActivity.class);

希望对您有所帮助。

如何完全关闭 activity 以便我可以阻止用户启动 activity

How to close activity completely so that I can prevent user to start the activity

android

alarmmanager

android-alarms