如何使用 TimePicker 和 DatePicker 分配日期和时间并将其存储在 Firebase 数据库中？ [关闭]

Question

这是我的问题，我想指定一个具体的时间和日期。但我的问题是如何在我的程序中实现它？我一直在关注这个帖子： A method to store date and time in Android using Firebase?

但问题似乎还没有解决。

这是我的程序，这个程序功能是当你借用某个物品时，你必须指定你想借那个物品的时间和日期。它还没有完全开发，因为时间分配和日期是我目前的问题。

public class Borrow extends AppCompatActivity implements DatePickerDialog.OnDateSetListener , TimePickerDialog.OnTimeSetListener{
private FirebaseAuth firebaseAuth;
private DatabaseReference databaseBorrow;
private Button btnBorrow,btnPick;
private TextView tv_result;
private int day,month,year,hour,minute;
private int dayFinal,monthFinal,yearFinal,hourFinal,minuteFinal;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_borrow);

    firebaseAuth = FirebaseAuth.getInstance();
    if (firebaseAuth.getCurrentUser() == null) {
        finish();
        startActivity(new Intent(this, Login.class));
    }

    Intent intent = getIntent();


    btnPick = (Button) findViewById(R.id.btnPick);
    tv_result = (TextView) findViewById(R.id.tvResult);
    String id = intent.getStringExtra(SearchFragment.BOOK_ID);
    btnBorrow=(Button)findViewById(R.id.borrowBtn);
    databaseBorrow= FirebaseDatabase.getInstance().getReference("Borrow").child(id);

    btnPick.setOnClickListener(new View.OnClickListener(){
        @Override
        public void onClick(View view) {
            Calendar c = Calendar.getInstance();
            year = c.get(Calendar.YEAR);
            month = c.get(Calendar.MONTH);
            day = c.get(Calendar.DAY_OF_MONTH);

            DatePickerDialog datePickerDialog = new DatePickerDialog(Borrow.this , Borrow.this , year,month,day);
            datePickerDialog.show();
        }
    });
    btnBorrow.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
         Button();
    }
});

}

private void Button(){
    String ids = databaseBorrow.push().getKey();
    String buttonText = btnBorrow.getText().toString();
    BorrowBook borrow = new BorrowBook(ids,buttonText);
    databaseBorrow.child(ids).setValue(borrow);
    Toast.makeText(this,"Borrow Successfully",Toast.LENGTH_SHORT).show();
}

@Override
public void onDateSet(DatePicker datePicker, int i, int i1, int i2) {
        yearFinal = i;
        monthFinal = i1+1;
        dayFinal = i2;

        Calendar c= Calendar.getInstance();
        hour = c.get(Calendar.HOUR_OF_DAY);
        minute = c.get(Calendar.MINUTE);

        TimePickerDialog timePickerDialog =
                new TimePickerDialog(Borrow.this, Borrow.this , hour , minute ,
                        DateFormat.is24HourFormat(this));
        timePickerDialog.show();

}

@Override
public void onTimeSet(TimePicker timePicker, int i, int i1) {
    hourFinal = i;
    minuteFinal = i1;

   //this portion of code is just a testing so that I can see what year and 
    date that i chose

    tv_result.setText("year: "+ yearFinal + "\n" +
            "month: "+ monthFinal + "\n" +
            "day: "+ dayFinal + "\n" +
            "hour: "+ hourFinal + "\n" +
            "minute: "+ minuteFinal);


}

}

Answer 1

您需要创建一个借用对象（借用对象可以具有签出和到期日期时间戳、项目 ID、借用者等），然后将您从选择器获得的值分配给字段。然后，您可以按照 firebase 文档描述将对象保存到 firebase 的方式将对象保存到 firebase。