将应用程序带回到最前面 [英] Bring application back to front

问题描述

我的应用程序是带有警报类型应用程序的计时器.计时器到期后，如果用户已经离开，但应用程序仍在运行，我想重新显示该应用程序的主要活动.

My application is a timer with alarm type app. When the timer expires i would like to bring the app's main activity back into view, if the user has navigated away, but the app is still running.

我显示了我想在哪里放置必要的代码:

I show where i would like to place the necessary code:

   public class MyCount extends CountDownTimer {
        public MyCount(long millisInFuture, long countDownInterval) {
          super(millisInFuture, countDownInterval);
        }

        public void onFinish() {

         /** code here to bring the app back to the front / top of stack, in its current state */


         timeDisplay.setText("Expired.!");
         ReminderFlashingScreen.setVisibility(View.GONE);
         statustab.setBackgroundResource(R.drawable.redtab);
         seeker.setProgress(0);
         reset.setBackgroundResource(R.drawable.resetbtnoff);
         playExpiredAlarm(); 
         alarmAnimation.start();
         flasher.setVisibility(View.VISIBLE);
         StopAlarmButtonAnimation.start();
         StopAlarmButton.setVisibility(View.VISIBLE);
         expired = true;
        }

        public void onTick(long millisUntilFinished) {
            remindertimepref = prefs.getString("reminderTime", "<unset>");
            remindtime = Integer.parseInt(remindertimepref.trim());
            timeDisplay.setText(formatTime(millisUntilFinished));
            seeker.setProgress((int) (millisUntilFinished / 1000 / 60 ) + 1);
            if (used == true){
                reminder_time = ((int) (millisUntilFinished / 1000));
                if (reminder_time == remindtime){
                    reminderalarm();
                    used = false;
                    }
                }

          }
    }

推荐答案

对我来说是这样的:

Intent intent = new Intent(Application.getContext(), AbstractFragmentActivity.instance.getClass());
intent.addFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
intent.addFlags(Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
intent.addFlags(Intent.FLAG_ACTIVITY_PREVIOUS_IS_TOP);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
Application.getContext().startActivity(intent);

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