爲什麼顯示2個對話框片段？

Question

我有一些代碼，編程添加ListViews併爲每個列表視圖創建按鈕，爲列表視圖創建新項目，並且每個項目都有一個單擊事件，顯示帶有刪除按鈕的對話框片段。它可以工作，但是對於「星期一」適配器，它顯示2個對話片段，而星期二隻有一個，所以星期二工作正常。看看：

private void InitializeExercisesForDay(string day, View view) 
    { 
     /* 
     * Basic start 
     * */ 

     LinearLayout layout = view.FindViewById<LinearLayout>(Resource.Id.linearLayoutCreatePlan); 

     TextView text = new TextView(Activity); 
     text.SetTextColor(Resources.GetColor(Resource.Color.lightGreen)); 
     text.Text = day; 
     layout.AddView(text); 

     Button buttonAddExercise = new Button(Activity) 
     { 
      Text = "Add Exercise" 
     }; 
     layout.AddView(buttonAddExercise); 

     /* 
     * Basic End */ 


     switch (day) 
     { 
      case "Monday": 

       ListViewMonday = new ListView(Activity); 
       MondayExerciseList = new List<Exercise>();      
       MondayAdapter = new Adapters.Exercise(Activity, MondayExerciseList); 
       ListViewMonday.Adapter = MondayAdapter; 
       layout.AddView(ListViewMonday);     
       break; 
      case "Tuesday": 
       ListViewTuesday = new ListView(Activity); 
       TuesdayExerciseList = new List<Exercise>(); 
       TuesdayAdapter = new Adapters.Exercise(Activity, TuesdayExerciseList); 
       ListViewTuesday.Adapter = TuesdayAdapter; 
       layout.AddView(ListViewTuesday); 
       break; 
     } 

     buttonAddExercise.Click += delegate 
     { 
      FragmentTransaction transaction = Activity.FragmentManager.BeginTransaction(); 
      Helpers.DialogViewExercises dialog = new Helpers.DialogViewExercises(Activity); 
      dialog.Show(transaction, "dialog"); 
      dialog.OnExerciseSelected += (o, e) => 
      { 
       var exercise = e.Exercise; 

       switch (day) 
       { 
        case "Monday": 
         MondayExerciseList.Add(exercise); 
         MondayAdapter = new Adapters.Exercise(Activity, MondayExerciseList); 
         Activity.RunOnUiThread(() => { MondayAdapter.NotifyDataSetChanged(); }); 
         ListViewMonday.Adapter = MondayAdapter; 
         if (ListViewMonday != null) 
         { 
          var parameters = GetListViewParameters(ListViewMonday, MondayAdapter); 
          ListViewMonday.LayoutParameters = parameters; 
         } 


         break; 

        case "Tuesday": 
         TuesdayExerciseList.Add(exercise); 
         TuesdayAdapter = new Adapters.Exercise(Activity, TuesdayExerciseList); 
         Activity.RunOnUiThread(() => { TuesdayAdapter.NotifyDataSetChanged(); }); 
         ListViewTuesday.Adapter = TuesdayAdapter; 
         if (ListViewTuesday != null) 
         { 
          var parameters = GetListViewParameters(ListViewTuesday, TuesdayAdapter); 
          ListViewTuesday.LayoutParameters = parameters; 
         } 


         break; 
       } 
      }; 
     }; 

     if (ListViewMonday != null) 
     { 
      ListViewMonday.ItemClick += ListViewMonday_ItemClick; 
      return; 
     } 

     if (ListViewTuesday != null) 
     { 
      ListViewTuesday.ItemClick += ListViewTuesday_ItemClick; 
      return; 
     } 

    } 

    private void ListViewTuesday_ItemClick(object sender, AdapterView.ItemClickEventArgs e) 
    { 
     var exercise = TuesdayExerciseList[e.Position]; 

     FragmentTransaction transaction = Activity.FragmentManager.BeginTransaction(); 
     Helpers.DialogViewExerciseInPlan dialog = new Helpers.DialogViewExerciseInPlan(exercise); 
     dialog.Show(transaction, "dialog"); 
     dialog.OnDelete += delegate 
     { 
      TuesdayExerciseList.Remove(exercise); 
      TuesdayAdapter = new Adapters.Exercise(Activity, TuesdayExerciseList); 
      Activity.RunOnUiThread(() => { TuesdayAdapter.NotifyDataSetChanged(); }); 
      ListViewTuesday.Adapter = TuesdayAdapter; 
      if (ListViewTuesday != null) 
      { 
       var parameters = GetListViewParameters(ListViewTuesday, TuesdayAdapter); 
       ListViewTuesday.LayoutParameters = parameters; 
      } 
     }; 
    } 

    private void ListViewMonday_ItemClick(object sender, AdapterView.ItemClickEventArgs e) 
    { 
     var exercise = MondayExerciseList[e.Position]; 

     FragmentTransaction transaction = Activity.FragmentManager.BeginTransaction(); 
     Helpers.DialogViewExerciseInPlan dialog = new Helpers.DialogViewExerciseInPlan(exercise); 
     dialog.Show(transaction, "dialog"); 
     dialog.OnDelete += delegate 
     { 
      MondayExerciseList.Remove(exercise); 
      MondayAdapter = new Adapters.Exercise(Activity, MondayExerciseList); 
      Activity.RunOnUiThread(() => { MondayAdapter.NotifyDataSetChanged(); }); 
      ListViewMonday.Adapter = MondayAdapter; 
      if (ListViewMonday != null) 
      { 
       var parameters = GetListViewParameters(ListViewMonday, MondayAdapter); 
       ListViewMonday.LayoutParameters = parameters; 
      } 
     }; 
    } 

Answer 1

想通了。 click事件必須在switch語句中，但我不知道爲什麼。有人知道嗎？

 switch (day) 
     { 
      case "Monday":     
       ListViewMonday = new ListView(Activity); 
       MondayExerciseList = new List<Exercise>();      
       MondayAdapter = new Adapters.Exercise(Activity, MondayExerciseList); 
       ListViewMonday.Adapter = MondayAdapter; 
       layout.AddView(ListViewMonday); 
       ListViewMonday.ItemClick += ListViewMonday_ItemClick; 
       break; 
      case "Tuesday": 
       ListViewTuesday = new ListView(Activity); 
       TuesdayExerciseList = new List<Exercise>(); 
       TuesdayAdapter = new Adapters.Exercise(Activity, TuesdayExerciseList); 
       ListViewTuesday.Adapter = TuesdayAdapter; 
       layout.AddView(ListViewTuesday); 
       ListViewTuesday.ItemClick += ListViewTuesday_ItemClick; 
       break; 
      case "Wednesday": 
       ListViewWednesday = new ListView(Activity); 
       WednesdayExerciseList = new List<Exercise>(); 
       WednesdayAdapter = new Adapters.Exercise(Activity, WednesdayExerciseList); 
       ListViewWednesday.Adapter = WednesdayAdapter; 
       layout.AddView(ListViewWednesday); 
       ListViewWednesday.ItemClick += ListViewWednesday_ItemClick; 
       break; 

     }