储存日期

Question

这是我的Firebase结构

我想在每个用户的第二个名字下面的“预订”下存储一天中的日期和时间，然后选择一天中的日期和时间。

这是我到目前为止用错误的方法得到的结果。它在名为“MyBookings”的单独子节点下设置日期

基本上，我所做的是单击一个显示日期和时间选择器的EditText，我需要将该日期存储在Firebase实时数据库中。

private void showDateTimeDialog(final EditText date_time_in) {
    final Calendar calendar=Calendar.getInstance();
    DatePickerDialog.OnDateSetListener dateSetListener=new DatePickerDialog.OnDateSetListener() {
        @Override
        public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
            calendar.set(Calendar.YEAR,year);
            calendar.set(Calendar.MONTH,month+1);
            calendar.set(Calendar.DAY_OF_MONTH,dayOfMonth);

            TimePickerDialog.OnTimeSetListener timeSetListener=new TimePickerDialog.OnTimeSetListener() {
                @Override
                public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                    calendar.set(Calendar.HOUR_OF_DAY,hourOfDay);
                    calendar.set(Calendar.MINUTE,minute);

                    SimpleDateFormat simpleDateFormat=new SimpleDateFormat("yy-MM-dd HH:mm");

                    date_time_in.setText(simpleDateFormat.format(calendar.getTime()));
                    Bookings booking = new Bookings(year,month,dayOfMonth,hourOfDay,minute);
                    rootDatabaseRef.setValue(booking);
                }
            };

            new TimePickerDialog(BookingActivity.this,timeSetListener,calendar.get(Calendar.HOUR_OF_DAY),calendar.get(Calendar.MINUTE),false).show();

        }

    };

    new DatePickerDialog(BookingActivity.this,dateSetListener,calendar.get(Calendar.YEAR),calendar.get(Calendar.MONTH),calendar.get(Calendar.DAY_OF_MONTH)).show();

}

这是我的Firebase参考，我知道它是错误的，但不知道如何写才是正确的。

DatabaseReference rootDatabaseRef;
rootDatabaseRef = FirebaseDatabase.getInstance().getReference().child("MyBookings");

这是我的POJO预订课。

public int year,month,dayOfMonth,hourOfDay,minute;

public Bookings(){

}

    public Bookings(int year, int month, int dayOfMonth, int hourOfDay, int minute) {
        this.year = year;
        this.month = month;
        this.dayOfMonth = dayOfMonth;
        this.hourOfDay = hourOfDay;
        this.minute = minute;
    }

    public int getYear() {
        return year;
    }

    public void setYear(int year) {
        this.year = year;
    }

    public int getMonth() {
        return month;
    }

    public void setMonth(int month) {
        this.month = month;
    }

    public int getDayOfMonth() {
        return dayOfMonth;
    }

    public void setDayOfMonth(int dayOfMonth) {
        this.dayOfMonth = dayOfMonth;
    }

    public int getHourOfDay() {
        return hourOfDay;
    }

    public void setHourOfDay(int hourOfDay) {
        this.hourOfDay = hourOfDay;
    }

    public int getMinute() {
        return minute;
    }

    public void setMinute(int minute) {
        this.minute = minute;
    }
} ```

setValue（）方法的当前结果。

MyBookings
dayOfMonth: 
6
hourOfDay: 
13
minute: 
49
month: 
0
year: 
2022

如何在Firebase中的用户（仅针对当前登录的用户）下存储正确选择的日期时间？

Answer 1

改变这个：

DatabaseReference rootDatabaseRef;
rootDatabaseRef = FirebaseDatabase.getInstance().getReference().child("MyBookings");

为此：

DatabaseReference rootDatabaseRef;
rootDatabaseRef = FirebaseDatabase.getInstance().getReference().child("MyBookings").child(username);