Question

目前，datepicker以m / d / yyyy格式将日期设置为textview。但我想将dateformat从m / d / yyyy更改为dd-mm-yyyy。我搜索了这个主题。但是没有找到解决方案。感谢任何帮助。

Main.axml

  <TextView
        android:layout_weight="80"
        android:id="@+id/dateDisplay"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Select Date" />
    <Button
        android:layout_weight="10"
        android:id="@+id/pickDate"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Pick date" />

mainactivity.cs

protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);

            // Create your application here
            SetContentView(Resource.Layout.Main);

             dateDisplay = FindViewById<TextView> (Resource.Id.dateDisplay);
             pickDate = FindViewById<Button> (Resource.Id.pickDate);

            // add a click event handler to the button
            pickDate.Click += delegate { ShowDatePickerDialog (); };

            // get the current date
            //date = DateTime.Today;

            // display the current date (this method is below)
           // UpdateDisplay (date);
        }

        void ShowDatePickerDialog()
        {
            var dialog = new DatePickerFragment(this, DateTime.Now, this);
            dialog.Show(FragmentManager, null);
        }

        public void OnDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth)
        {
            var newDate = new DateTime(year, monthOfYear + 1, dayOfMonth);
            UpdateDisplay(newDate);
        }

        void UpdateDisplay(DateTime selectedDate)
        {
           // selectedDate.GetDateTimeFormats('d');
          //  dateDisplay.Text = selectedDate.GetDateTimeFormats('d').ToString();

             dateDisplay.Text = selectedDate.ToString("d");
        }
    }

DatePickerFragment.cs

 public class DatePickerFragment : DialogFragment
    {
        private readonly Context context;
        private DateTime date;
        private readonly DatePickerDialog.IOnDateSetListener listener;

        public DatePickerFragment(Context context, DateTime date, DatePickerDialog.IOnDateSetListener listener)
        {
            this.context = context;
            this.date = date;
            this.listener = listener;
        }

        public override Dialog OnCreateDialog(Bundle savedState)
        {
            var dialog = new DatePickerDialog(context, listener, date.Year, date.Month - 1, date.Day);
            return dialog;
        }
    }

Answer 1

在UpdateDisplay：

中试试

dateDisplay.Text = selectedDate.ToString("dd-MM-yyyy");

在xamarin android中更改日期格式

1 个答案: