Question

我正在建立一个应用程序，我以编程方式将视图添加到视图中。我为每一个ImageButton行添加了一个删除按钮。现在我有几个问题。

我可以使用ImageButton吗？
我如何获得tablerow id 点击删除按钮的位置？
我如何转换eventargs 从clickhandler到MenuItemOnMenuItemClickEventArgs或者副反之亦然？
我的点击处理器应该如何？

这是我的源代码：

public class CalculatorSide2 : Activity
{
    private Button stepButton;
    private IntentHelper intentHelper = new IntentHelper();
    private string age;
    private string estLife;
    private string estPens;
    private string[] pensions;
    protected override void OnCreate(Bundle bundle)
    {
        base.OnCreate(bundle);
        intentHelper.IntentSide2(Intent, out age, out estLife,out estPens);

        SetContentView(Resource.Layout.calculatorside2);

        TableLayout tl_layout = FindViewById<TableLayout>(Resource.Id.tableLayout1);

        ImageView plusButton = FindViewById<ImageView>(Resource.Id.plusButton);
        stepButton = FindViewById<Button>(Resource.Id.cside2stepButton);

        plusButton.Click += (sender, e) =>
        {
            PopupMenu popupMenu = new PopupMenu(this, plusButton);
            popupMenu.Inflate(Resource.Menu.popupmenu);
            fillPopupMenu(popupMenu);
            popupMenu.Show();

            popupMenu.MenuItemClick += (s1, arg) =>
            {
                string info = arg.Item.TitleFormatted.ToString();
                string id = arg.Item.ItemId.ToString();

                var inputDialog = new AlertDialog.Builder(this);

                EditText userInput = new EditText(this);
                userInput.InputType = (Android.Text.InputTypes.NumberFlagDecimal | Android.Text.InputTypes.ClassNumber);
                inputDialog.SetTitle(info);
                inputDialog.SetView(userInput);

                inputDialog.SetPositiveButton("Ok", (ss, ee) =>
                {
                    TextView rowInfo = new TextView(this);
                    rowInfo.SetLines(2);
                    rowInfo.TextSize = 20;
                    rowInfo.SetTextColor(Android.Graphics.Color.Black);
                    rowInfo.Text = info + ": \n" + userInput.Text + "€";

                    ImageButton delete = new ImageButton(this);
                    delete.SetBackgroundDrawable(Resources.GetDrawable(Resource.Drawable.delete_icon));

                    TableRow row = new TableRow(this);
                    row.LayoutParameters = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MatchParent, ViewGroup.LayoutParams.MatchParent);
                    row.SetBackgroundColor(Android.Graphics.Color.Rgb(255, 153, 0));
                    row.SetPadding(0, 0, 0, 30);

                    row.AddView(rowInfo);
                    row.AddView(delete);
                    tl_layout.AddView(row);
                });
                inputDialog.SetNegativeButton("Cancel", (se, es) => { });

                inputDialog.Show();
            };
        };

        stepButton.Click += (object sender, EventArgs e) =>
        {
            var step = new Intent(this, typeof(CalculatorSide3));
            step.PutExtra("Age", age);
            step.PutExtra("EstPens", estPens);
            step.PutExtra("EstLife", estLife);
            step.PutStringArrayListExtra("Pensions", pensions);
            StartActivity(step);
        };
    }


    private void fillPopupMenu(PopupMenu menu)
    {
        int groupId = 0;
        int i = 0;
        int menuItemId = Android.Views.Menu.First;
        int menuItemOrder = Android.Views.Menu.None;

        foreach (var item in Enum.GetNames(typeof(PopupMenuItems)))
        {
            string itemString = item.ToString();
            menu.Menu.Add(groupId, menuItemId + i, menuItemOrder + i, itemString.Replace("_", " "));
            i++;
        }
    }
}

我希望有人理解我的意思，bc英语不是我的母语。

Answer 1

public class CalculatorSide2 : Activity
{
    private Button stepButton;
    private IntentHelper intentHelper = new IntentHelper();
    private string age;
    private string estLife;
    private string estPens;
    private string[] pensions;
    private Dictionary<int,string> temp;
    private TableLayout tl_layout;
    protected override void OnCreate(Bundle bundle)
    {
        base.OnCreate(bundle);
        intentHelper.IntentSide2(Intent, out age, out estLife,out estPens);

        SetContentView(Resource.Layout.calculatorside2);

        tl_layout = FindViewById<TableLayout>(Resource.Id.tableLayout1);

        ImageView plusButton = FindViewById<ImageView>(Resource.Id.plusButton);
        stepButton = FindViewById<Button>(Resource.Id.cside2stepButton);

        temp = new Dictionary<int,string>();
        int i = 0;

        plusButton.Click += (sender, e) =>
        {
            PopupMenu popupMenu = new PopupMenu(this, plusButton);
            popupMenu.Inflate(Resource.Menu.popupmenu);
            fillPopupMenu(popupMenu);
            popupMenu.Show();

            popupMenu.MenuItemClick += (s1, arg) =>
            {
                string info = arg.Item.TitleFormatted.ToString();
                string id = arg.Item.ItemId.ToString();

                var inputDialog = new AlertDialog.Builder(this);

                EditText userInput = new EditText(this);
                userInput.InputType = (Android.Text.InputTypes.NumberFlagDecimal | Android.Text.InputTypes.ClassNumber);
                inputDialog.SetTitle(info);
                inputDialog.SetView(userInput);

                inputDialog.SetPositiveButton("Ok", (ss, ee) =>
                {
                    TextView rowInfo = new TextView(this);
                    rowInfo.SetLines(2);
                    rowInfo.TextSize = 20;
                    rowInfo.SetTextColor(Android.Graphics.Color.Black);
                    rowInfo.Text = info + ": \n" + userInput.Text + "€";

                    ImageButton delete = new ImageButton(this);
                    delete.SetBackgroundDrawable(Resources.GetDrawable(Resource.Drawable.delete_icon));
                    delete.Focusable = false;
                    delete.Clickable = false;

                    TableRow row = new TableRow(this);
                    row.LayoutParameters = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MatchParent, ViewGroup.LayoutParams.MatchParent);
                    row.SetBackgroundColor(Android.Graphics.Color.Rgb(255, 153, 0));
                    row.SetPadding(0, 0, 0, 30);
                    row.Id = 10 + i;

                    row.Click += new EventHandler(HandleClick);

                    row.AddView(rowInfo);
                    row.AddView(delete);
                    tl_layout.AddView(row);

                    temp.Add(row.Id,userInput.Text);

                    i++;
                });
                inputDialog.SetNegativeButton("Cancel", (se, es) => { });

                inputDialog.Show();
            };
        };

        stepButton.Click += (object sender, EventArgs e) =>
        {
            if (temp.Count != 0)
            {
                pensions = new string[temp.Count];
                var j = 0;
                foreach (KeyValuePair<int, string> pair in temp)
                {
                    pensions[j] = pair.Value;
                    j++;
                }
            }
            else
            {
                pensions = new string[0];
            }

            var step = new Intent(this, typeof(CalculatorSide3));
            step.PutExtra("Age", age);
            step.PutExtra("EstPens", estPens);
            step.PutExtra("EstLife", estLife);
            step.PutStringArrayListExtra("Pensions", pensions);
            StartActivity(step);
        };
    }

    private void fillPopupMenu(PopupMenu menu)
    {
        int groupId = 0;
        int i = 0;
        int menuItemId = Android.Views.Menu.First;
        int menuItemOrder = Android.Views.Menu.None;

        foreach (var item in Enum.GetNames(typeof(PopupMenuItems)))
        {
            string itemString = item.ToString();
            menu.Menu.Add(groupId, menuItemId + i, menuItemOrder + i, itemString.Replace("_", " "));
            i++;
        }
    }

    public void HandleClick(object sender, EventArgs e)
    {
        var clickedTR = sender as TableRow;
        int trId = clickedTR.Id;

        var builder = new AlertDialog.Builder(this);
        builder.SetTitle("Löschen");
        builder.SetMessage("Möchten Sie den Eintrag wirklich löschen?");
        builder.SetPositiveButton("Ja", (ssr,args) => {
            temp.Remove(trId);
            tl_layout.RemoveView(clickedTR);
        });
        builder.SetNegativeButton("Nein",(sse,arge) => { });
        builder.SetCancelable(false);
        builder.Show();
    }
}

Clickhandler删除一个tablerow

1 个答案: