每天都会重复进行通知的警报管理器

Question

我正在使用警报管理器来显示来自应用程序的通知。我也在使用时间选择器设置特定时间。一切正常，但这只是第一次。例如，如果我将星期一设置为晚上8.30，则通知将仅在这一天显示。我想每天显示此通知。 下面是我的通知类。

public class Notifications extends AppCompatActivity implements TimePickerDialog.OnTimeSetListener {
private TextView mTextView;
private SharedPreferences sharedPreferences;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_notifications);
    mTextView = findViewById(R.id.textView);
    sharedPreferences=getSharedPreferences("notificat",Context.MODE_PRIVATE);
    String time= sharedPreferences.getString("time","");
    mTextView.setText(time);




    ButtonsLogic();

}


public void ButtonsLogic(){
    Button buttonTimePicker = findViewById(R.id.button_timepicker);
    buttonTimePicker.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            DialogFragment timePicker = new TimePickerFragment();
            timePicker.show(getSupportFragmentManager(), "time picker");
        }
    });

    Button buttonCancelAlarm = findViewById(R.id.button_cancel);
    buttonCancelAlarm.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            cancelAlarm();
        }
    });

}

@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
    Calendar c = Calendar.getInstance();
    c.set(Calendar.HOUR_OF_DAY, hourOfDay);
    c.set(Calendar.MINUTE, minute);
    c.set(Calendar.SECOND, 0);

    updateTimeText(c);
    startAlarm(c);
}

private void updateTimeText(Calendar c) {
    String timeText = "Przypomnienie ustawione na godzinę: ";

    timeText += DateFormat.getTimeInstance(DateFormat.SHORT).format(c.getTime());
    mTextView.setText(timeText);
    sharedPreferences= getSharedPreferences("notificat",Context.MODE_PRIVATE);
    SharedPreferences.Editor editor= sharedPreferences.edit();
    editor.putString("time",mTextView.getText().toString());
    editor.apply();

}

private void startAlarm(Calendar c) {
    AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
    Intent intent = new Intent(this, AlertReceiver.class);
    PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 1, intent, 0);

    alarmManager.setExact(AlarmManager.RTC_WAKEUP, c.getTimeInMillis(), pendingIntent);

}

private void cancelAlarm() {
    AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
    Intent intent = new Intent(this, AlertReceiver.class);
    PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 1, intent, 0);

    alarmManager.cancel(pendingIntent);
    mTextView.setText("Usunięto przypomnienie");
}

这是解决方案

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