Question

我按照本教程制作应用程序 - Link 我的问题是如何为两个不同的按钮添加两个日期选择器？在我的情况下，例如：一个用于开始日期，一个用于结束日期。

代码更新 - （初始化变量）

    private System.Boolean sd;
    private System.Boolean ed;
    private const int Start_Date = 1;
    private int SDYear = 2018, SDMonth = 1, SDDay = 1;
    private const int End_Date = 2;
    private int EDYear = 2018, EDMonth = 1, EDDay = 1;
    start_date = FindViewById<EditText>(Resource.id.start_date_et)
    end_date = FindViewById<EditText>(Resource.id.end_date_et)

          (click events )


Start_date.Click += delegate {

                 sd = true;
                 ed = false; 
                ShowDialog(Resource.Id.start_date_et);
            };

            End_date.Click += delegate {

                 ed = true;
                 sd = false;
                ShowDialog(Resource.Id.end_date_et);
            };

（覆盖对话框的方法）

 protected override Dialog OnCreateDialog(int id)
        {
            switch (id)
            {
                case (Resource.Id.start_date_et):
                    {
                        return new DatePickerDialog(this, Resource.Style.DialogTheme, this, SDYear, SDMonth, SDDay);
                        break;
                    }

                case (Resource.Id.end_date_et):
                    {
                        return new DatePickerDialog(this, Resource.Style.DialogTheme, this, EDYear, EDMonth, EDDay);
                        break;
                    }

                default:
                    break;
            }
            return null;

        }

（ondataset界面）

 public void OnDateSet(DatePicker view, int year, int month, int dayOfMonth)
        {
          if(sd == true){
            this.SDYear = year;
            this.SDMonth = month;
            this.SDDay = dayOfMonth;
            start_date_text = (SDMonth + 1).ToString() + "-" + SDDay.ToString() + "-" + SDYear.ToString();
            Toast.MakeText(this, (SDMonth + 1)
                + "-" + (SDDay) + "-" + SDYear, ToastLength.Short).Show();
           }else if(ed == true){


            this.EDYear = year;
            this.EDMonth = month;
            this.EDDay = dayOfMonth;
            end_date_text = (EDMonth + 1).ToString() + "-" + EDDay.ToString() + "-" + EDYear.ToString();
            Toast.MakeText(this, (EDMonth + 1)
                + "-" + (EDDay) + "-" + EDYear, ToastLength.Short).Show();

}

我想通过这种方法，但每当我尝试在textview上显示start_date_text和end_date_text时，start_date_text或end_date_text都会显示，但不会同时显示。

Answer 1

日期选择器的cs代码

var fragView = this.BindingInflate(Resource.Layout.yourView, null);
        dateselect = fragView.FindViewById<EditText>(Resource.Id.txtdeliverydateselect);

dateselect.Click += delegate
        {
            DateTime currentdate;
            currentdate = DateTime.Now.ToLocalTime();
var dialog = new DatePickerDialogFragment(Activity, currentdate, this);
            dialog.Show(FragmentManager, "date");
        };

你的axml代码

<LinearLayout
            android:layout_height="wrap_content"
            android:layout_width="360dp"
            android:layout_marginTop="5dp"
            android:orientation="horizontal">
            <EditText
                android:id="@+id/txtdeliverydateselect"
                android:hint="Monday 31 October"
                android:layout_width="fill_parent"
                android:layout_weight="0.9"
                 android:textSize="18dp"
                />
</LinearLayout>

使用与其他日期选择器相同的用户

Answer 2

在OnDateSet方法中，您要为日期分配文本值而不添加任何条件，您应该使用 id 检查单击哪个按钮，并根据该ID更新StartDate TextView和EndDate TextView。

public void OnDateSet(DatePicker view, int year, int month, int dayOfMonth)
          {          

   if(StartDateIdClicked){
        this.SDYear = year;
        this.SDMonth = month;
        this.SDDay = dayOfMonth;
        start_date_text = (SDMonth + 1).ToString() + "-" + SDDay.ToString() + "-" + SDYear.ToString();
        Toast.MakeText(this, (SDMonth + 1)
            + "-" + (SDDay) + "-" + SDYear, ToastLength.Short).Show();

}

    elseif(EndDateIdClicked){
        this.EDYear = year;
        this.EDMonth = month;
        this.EDDay = dayOfMonth;
        end_date_text = (EDMonth + 1).ToString() + "-" + EDDay.ToString() +"-" + EDYear.ToString();
        Toast.MakeText(this, (EDMonth + 1)
            + "-" + (EDDay) + "-" + EDYear, ToastLength.Short).Show();
     }
   }

当您调用ShowDialog（Start_Date）时，您为 End_Date = 1 和 Start_Date = 1 分配相同值;和ShowDialog（End_Date）; 然后两个OnCreateDialog（），切换情况都是真的 Start_Date和End_Date

如何在Xamarin Android中设置两个日期选择器？

2 个答案: