Question

这是我的工作，它不起作用...我从时间选择器的共享首选项中获取时间，这一次是用户在运行时名称中选择的时间...并且在片段中，我需要将系统当前时间与第一次发送通知。但如果条件在比较期间不起作用。当我删除如果条件，然后通知工作良好的问题是比较时间。它不会显示任何错误。

Long firstTimeinLong；

@SuppressLint("NewApi")

@Nullable

    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

        getActivity().setTitle("Blood Pressure");

        View view = inflater.inflate(R.layout.fragment_blood_pressure, container, false);


    Date myDate = new Date(); // Default Value.

    Long dateTimeinLong = myDate.getTime();


    SharedPreferences prefs = getActivity().getSharedPreferences("MY_PREFS_BPTIME_CHECKS", MODE_PRIVATE);

    firstTimeinLong = prefs.getLong( "millis1",0 ); // firstTime1


    System.out.println("System Time : " + dateTimeinLong);
    System.out.println("First Time : " + firstTimeinLong);



    if (dateTimeinLong == firstTimeinLong.longValue()  )// i dont know why this is not working but i do not get any error
        {
            LGSnackbarManager.show(INFO, "first time is here in the loop");
            Intent notifyIntent = new Intent(getActivity().getApplicationContext(), NotificationBroadcastReceiver.class);
            PendingIntent pendingIntent = PendingIntent.getBroadcast(getActivity().getApplicationContext(), 12345678, notifyIntent, PendingIntent.FLAG_UPDATE_CURRENT);
            AlarmManager alarmManager = (AlarmManager) getActivity().getApplicationContext().getSystemService(getActivity().getApplicationContext().ALARM_SERVICE);
            alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(),1000, pendingIntent);
        }

        return view;
    }

Answer 1

谢谢大家尊敬的工程师，我真的很喜欢你们所有人都对我的问题做出快速反应……我用这四个链接解决了我的问题，这四个链接在我的情况下对我有帮助，我不需要与系统进行比较当前时间。

4-Best way to compare dates in Android 3-How to repeat notification daily on specific time in android through background service 2-Getting hours,minutes, and seconds from Date? 1-How to save and retrieve Date in SharedPreferences

首先我使用

Calendar cal1 = Calendar.getInstance();

像这样在cal1中设置用户定义的时间prefs.getLong值

cal1.setTimeInMillis(prefs.getLong(key"millis1", defValue 0));

然后我得到这样的（设置为保存的时间）cal1

Date firstTimeinLong = cal1.getTime();

现在我这样分配时间

int minutes1 = cal1.get(Calendar.MINUTE);
int hour1 = cal1.get(Calendar.HOUR_OF_DAY);
int second1 = cal1.get(Calendar.SECOND);

并且我使用另一个日历对象进行通知并像这样设置MINUTE，HOUR_OF_DAY和SECOND

Calendar cal2forNotify = Calendar.getInstance();
cal2forNotify. calendarforNotification.set(Calendar.HOUR_OF_DAY, hour1);
cal2forNotify.set(Calendar.MINUTE, minutes1);
cal2forNotify.set(Calendar.SECOND, 0);

最后一个更改是在alarmManger.setRepeating行中

alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendarforNotification.getTimeInMillis(), AlarmManager.INTERVAL_DAY, pendingIntent);

这是代码解决方案 code is in the image

比较两个时间片段不起作用

1 个答案: