问题描述
我使用 DatePickerDialog 通过单击 TextView 从用户获取所选日期。但问题是我如何将该值(日期)从 TextView 发送到 Firebase?日期可以转成字符串吗?
TextView startDate;
DatePickerDialog.OnDateSetListener startDateDateSetListener;
startDate.setonClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Calendar cal = Calendar.getInstance();
cal.add(Calendar.DATE,-1);
int year = cal.get(Calendar.YEAR);
int month = cal.get(Calendar.MONTH);
int day = cal.get(Calendar.DAY_OF_MONTH);
DatePickerDialog dialog = new DatePickerDialog(leaveForm.this,android.R.style.Theme_Holo_Light_Dialog_MinWidth,startDateDateSetListener,year,month,day);
dialog.getwindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
dialog.getDatePicker().setMinDate(cal.getTimeInMillis());
dialog.getDatePicker().setMinDate(System.currentTimeMillis() - 1000);
dialog.show();
}
});
startDateDateSetListener = new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker datePicker,int year,int month,int day) {
month = month + 1;
Log.d(TAG,"onDateSet: dd/mm/yyy: " + day + "/" + month + "/" + year);
String date = day + "/" + month + "/" + year;
startDate.setText(date);
}
};
private void applyLeave() {
String leave_type = leaveType.getSelectedItem().toString(); //Spinner
String start_date = startDate.getText().toString();
leavedetails = new leaveDetails(leave_type,start_date);
progressBar.setVisibility(View.VISIBLE);
reference.child(userID).child("leaveRequest").push().setValue(leavedetails).addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
if (task.isSuccessful()) {
Toast.makeText(leaveForm.this,"Leave Request Sent!",Toast.LENGTH_LONG).show();
progressBar.setVisibility(View.GONE);
} else {
Toast.makeText(leaveForm.this,"Leave Request Failed!",Toast.LENGTH_LONG).show();
progressBar.setVisibility(View.GONE);
}
}
});
}
我尝试使用 String start_date = startDate.getText().toString(); ,但没有成功。
解决方法
我建议将其存储为时间戳,然后在需要时将其转换回日期和时间。
此示例为您提供日期和时间,但如果您想获得该日期的午夜,则只需将最后三个参数保留为“0”。
Calendar calendar = Calendar.getInstance();
calendar.set(picker.getYear(),picker.getMonth(),picker.getDayOfMonth(),picker.getHours(),picker.getMinutes(),picker.getSeconds());
date = Long.toString(calendar.getTimeInMillis());
这也将确保您可以轻松地将其转换为您将来可能需要的任何时区。