日期选择器对话框和时间选择器对话框不同时工作

Question

我是安卓系统的新手。我一直在开发我的第一个应用程序，这是一个提醒。在提醒中，我创建了两个EditText，一个用于从TimePickerDialog中选择时间，另一个用于在DatePickerDialog中选择日期。当我同时包含（TimePickerDialog和DatePickerDialog）时，为它们设置的时间被视为单独的时间，并且每个都会在应该的时候熄灭。基本上，两个警报会熄灭，而不是一个。

我应该如何包括TimePickerDialog和DatePicker Dialog，以便在设置它们时将它们视为一个警报？

如有任何帮助，将不胜感激

这是我的MainActivity类（我从中删除了TimePickerDialog部分）：

主要活动.java

public class MainActivity extends Activity {
EditText editText;
TextView textView;
Spinner spinner;
ArrayAdapter<CharSequence> adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    textView = (TextView) findViewById(R.id.textView);
    spinner = (Spinner) findViewById(R.id.spinner);
    adapter = ArrayAdapter.createFromResource(MainActivity.this,
            R.array.Alarms, android.R.layout.simple_spinner_item);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    spinner.setAdapter(adapter);
    spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
            Toast.makeText(MainActivity.this, parent.getItemAtPosition(position) + " is selected", Toast.LENGTH_SHORT).show();
        }
        @Override
        public void onNothingSelected(AdapterView<?> parent) {
        }
    });
    editText = (EditText) findViewById(R.id.editText);
    editText.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            editText.setText("");
            openTimePickerDialog(false);
        }
    });
}
private void openTimePickerDialog(boolean is24r) {
    Calendar calendar = Calendar.getInstance();
    TimePickerDialog timePickerDialog =
            new TimePickerDialog(
                    MainActivity.this,
                    onTimeSetListener,
                    calendar.get(Calendar.HOUR_OF_DAY),
                    calendar.get(Calendar.MINUTE),
                    is24r);
    timePickerDialog.setTitle("Set time");
    timePickerDialog.show();
}

TimePickerDialog.OnTimeSetListener onTimeSetListener =
        new TimePickerDialog.OnTimeSetListener() {
            @Override
            public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                Calendar calendar = Calendar.getInstance();
                calendar.set(Calendar.HOUR_OF_DAY, hourOfDay);
                calendar.set(Calendar.MINUTE, minute);
                calendar.set(Calendar.SECOND, 0);
                calendar.set(Calendar.MILLISECOND, 0);
                textView.setText(hourOfDay + ":" + minute);
                setAlarm(calendar);
                setAlarmTwo(calendar);
            }
        };

private void setAlarm(Calendar targetCal) {
    if (spinner.getSelectedItem().toString().equals("none")) {
        Intent intent = new Intent(getBaseContext(), AlarmReceiver.class);
        PendingIntent pendingIntent = PendingIntent.getBroadcast(getBaseContext(), 2, intent, 0);
        AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
        alarmManager.set(AlarmManager.RTC_WAKEUP, targetCal.getTimeInMillis(), pendingIntent);
        textView.setText(
                "nn***n"
                        + "One shot alarm " + "/n" + targetCal.getTime());
    }
}
private void setAlarmTwo(Calendar targetCalendar) {
    if (spinner.getSelectedItem().toString().equals("two mins")) {
        Intent intent = new Intent(getBaseContext(), AlarmReceiver.class);
        PendingIntent pendingIntent = PendingIntent.getBroadcast(getBaseContext(), 5, intent, 0);
        AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
        alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,
                targetCalendar.getTimeInMillis(),
                TimeUnit.MINUTES.toMillis(2),
                pendingIntent);
        textView.setText(
                "nn***n"
                        + "The alarm will go off every 2 minutes " + "n" + targetCalendar.getTime() + "n"
                        + "***n");
    }
}
}

Answer 1

将其应用于您的程序-

1. 定义全局日历变量。

   Calendar selecteddate;
   

2. 要显示日期选择器，请先定义日历，然后定义日期选择器。

   final Calendar c = Calendar.getInstance();
   int mYear = c.get(Calendar.YEAR);
   int mMonth = c.get(Calendar.MONTH);
   int mDay = c.get(Calendar.DAY_OF_MONTH);
   DatePickerDialog startdatepicker = new DatePickerDialog(MainActivity.this,
                   new DatePickerDialog.OnDateSetListener() {
                       @Override
                       public void onDateSet(DatePicker view, int year,
                                             int monthOfYear, int dayOfMonth) {
                           final Calendar c = Calendar.getInstance();
                           c.set(year, monthOfYear, dayOfMonth);
                           selecteddate = c;
   
                       }
                   }, mYear, mMonth, mDay);
           startdatepicker.show();
   

3. 然后是时间选择器。

   TimePickerDialog timePickerDialog = new TimePickerDialog(MainActivity.this,
                   new TimePickerDialog.OnTimeSetListener() {
                       @Override
                       public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                           selecteddate.set(selectedinitialdate.get(Calendar.YEAR), selecteddate.get(Calendar.MONTH), selecteddate.get(Calendar.DAY_OF_MONTH), hourOfDay, minute);
                       }
                   }
                   , 10, 10, false
           );
           timePickerDialog.show();
   

4. 然后您就有了一个日历变量，该变量已准备好分配给报警功能。

   将所选日期传递给功能，您将在用户选择的时间和日期触发一个警报。

   private void setAlarm(Calendar targetCal) {
   
   Intent intent = new Intent(getBaseContext(), AlarmReceiver.class);
   PendingIntent pendingIntent = PendingIntent.getBroadcast(getBaseContext(), 2, intent, 0);
   AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
   alarmManager.set(AlarmManager.RTC_WAKEUP, targetCal.getTimeInMillis(), pendingIntent);
   }
   

如果这对你有用，请告诉我。