java - 我的EditText仅由SetText()更新；每第二次尝试

Question

我正在尝试在 EditText 框中显示日期和时间，并在此处编写了一些代码。问题是，它有效 - 但仅在第二次尝试时有效。意思是我选择日期和时间..没有任何反应，第二次尝试 setText();更新 EditText 以显示日期和时间。但是，正如您可能已经猜到的那样，我希望它立即更新 EditText。

@Override
 public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_add_reservation);

    firebaseAuth = FirebaseAuth.getInstance();
    textViewUserid = findViewById(R.id.addReservation_userId_edittext);

    FirebaseUser user = firebaseAuth.getCurrentUser();
    textViewUserid.setText(user.getEmail());

    gestureDetector = new GestureDetector(this);

    mDisplayDate = findViewById(R.id.addReservation_fromTime_edittext);
    mDisplayDate2 = findViewById(R.id.addReservation_toTime_edittext);


    mDisplayDate.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Calendar cal = Calendar.getInstance();
            int year = cal.get(Calendar.YEAR);
            int month = cal.get(Calendar.MONTH);
            int day = cal.get(Calendar.DAY_OF_MONTH);
            int hour = cal.get(Calendar.HOUR_OF_DAY);
            int minute = cal.get(Calendar.MINUTE);

            DatePickerDialog datePickerDialog = new DatePickerDialog(
                    AddReservationActivity.this,
                    android.R.style.Theme_Light,
                    mDateSetListener,
                    year,month,day);

            TimePickerDialog timePickerDialog = new TimePickerDialog(
                    AddReservationActivity.this,
                    android.R.style.Theme_Light,
                    mTimeSetListener,
                    hour,minute,true);

            timePickerDialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
            timePickerDialog.show();
            datePickerDialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
            datePickerDialog.show();
        }
    });
    mDateSetListener = new DatePickerDialog.OnDateSetListener() {
        @Override
        public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
            month = month + 1;
            final String date = dayOfMonth + "/" + month + "/" + year;

            mTimeSetListener = new TimePickerDialog.OnTimeSetListener() {
                @Override
                public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                    if (minute < 10) {
                        String time = "" + hourOfDay + ":" + "0"+minute;
                        mDisplayDate.getText().toString();
                        mDisplayDate.setText(date + " " + time);
                    }else {
                        String time = "" + hourOfDay + ":" + minute;
                        mDisplayDate.getText().toString();
                        mDisplayDate.setText(date + " " + time);

                    }
                }
            };
        }
    }

我已经尝试了几个小时来解决这个问题，浏览了 Stackoverflow 和许多其他网站。这有点令人沮丧，我真的希望有人对我做错的事情提出意见。

如果我错过的网站上已经有解决方案，我深表歉意。预先非常感谢。

Answer 1

我找到了解决方案，附加了 EditText - 正如评论中所建议的。因此，不要尝试同时使用日期和时间字符串设置 EditText 的文本。我将它们分开并制作了一个 setText(date);并附加时间:

  mDateSetListener = new DatePickerDialog.OnDateSetListener() {
        @Override
        public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
            month = month + 1;
            final String date = dayOfMonth + "/" + month + "/" + year;
            mDisplayDate.setText(date);
        }
    };
    mTimeSetListener = new TimePickerDialog.OnTimeSetListener() {
        @Override
        public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
            if (minute < 10) {
                String time = " " + hourOfDay + ":" + "0" + minute;
                mDisplayDate.append(time);
            } else {
                String time = " " + hourOfDay + ":" + minute;
                mDisplayDate.append(time);

            }
        }
    };