![](/img/trans.png)
[英]How to Popup Alert() from asp:DropDownList OnSelectedIndexChanged?
[英]How to show an Alert PopUp from an Alert PopUp in Xamarin android
我創建了一個警報彈出窗口,詢問用戶是否要編輯或刪除提醒。
如果用戶單擊刪除提醒按鈕,我想顯示另一個警報彈出窗口,詢問用戶是否確定。
像這樣的東西:
AlertDialog.Builder dialog = new AlertDialog.Builder(this);
AlertDialog alert = dialog.Create();
alert.SetTitle("Edit or Delete?");
alert.SetMessage("Would you like to edit your reminder or delete it?");
alert.SetIcon(Resource.Drawable.image_2020_09_29T09_45_02_165Z);
alert.SetButton("Delete", (c, ev) =>
{
alert.SetTitle("Delete Reminder");
alert.SetMessage("Are you sure!");
alert.SetIcon(Resource.Drawable.Screenshot_2020_11_10_at_8_05_44_AM);
alert.SetButton("yes", (c, ev) =>
{
TextView _txtLabel;
reminder = listitem[e.Position];
ReminderHelper.DeleteReminder(this,reminder);
_txtLabel = FindViewById<TextView>(Resource.Id.txt_label);
StartActivity(new Intent(this, typeof(ListReminder)));
Toast.MakeText(this, "Deleted Sucessfully!", ToastLength.Short).Show();
GC.Collect();
});
alert.SetButton2("no", (c, ev) => { });
});
alert.SetButton2("Edit", (c, ev) =>
{
StartActivity(new Intent(this, typeof(MainActivity)));
});
alert.SetButton3("Cancel", (c, ev) => { });
alert.Show();
但是在上面的代碼中,當我按下“刪除”按鈕時,提醒不會被刪除。
任何幫助表示贊賞!
它不起作用的原因是您兩次使用同一個實例, AlertDialog alert = dialog.Create(); 每次要創建警報時都需要調用它。
AlertDialog alert = dialog.Create();
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.