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AlertDialog - How do I get the message to show?

I have a Alert dialog that I wish to show at a particular point during my app's process (currently on selecting a listview item).
I have tried many varieties of the AlertDialog and can show the Alert but no matter what, the message will never show.

Here are two examples that I have seen working for others perfectly fine but still do not show the message for myself:

AlertDialog.Builder builder = new AlertDialog.Builder(this);
AlertDialog alertDialog = builder.Create();

new AlertDialog.Builder(this)
    .SetPositiveButton("Yes", (sent, args) =>
                    // User pressed yes
    .SetNegativeButton("No", (sent, args) =>
                    // User pressed no 

They are both located in a separate function that is called when a listview item is pressed.
Am I missing some sort of referencing or doing something wrong?
Or is perhaps one of my "using" overwriting the correct reference for AlertDialog?
(Usings in question)

using Android.App;
using Android.Content;
using Android.OS;
using Android.Widget;
using Java.IO;
using Java.Lang;
using Java.Net;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using Org.Json;
using System.Collections.Generic;

Any ideas would be greatly appreciated.

Thank you in advance.


  • ChristopheBERNARDChristopheBERNARD BEMember ✭✭✭✭✭

    Hello @MathewPotrykus

    i'm not an expert but try to use this

    RunOnUiThread(() =>
    builder .Show();


    hope this help

  • MathewPotrykusMathewPotrykus USMember ✭✭

    Hi @ChristopheBERNARD ,

    Thank you for the reply, but all that seemed to do was bring up a UI layer and show nothing
    (dimmed entire screen like a black piece of film had been layered onto)

    Even if I place a AlertDialog into the Thread it just appears underneath the layer and still shows no Message :(

  • Michael_ShapiroMichael_Shapiro USMember ✭✭✭

    place return builder.Create(); instead of .Show

  • Michael_ShapiroMichael_Shapiro USMember ✭✭✭

    well.. I think your code is not really correct. Here is the working example:

    public class InfoBoxFragment :  DialogFragment
        public override Dialog OnCreateDialog(Bundle savedInstanceState)
            AlertDialog.Builder builder = new AlertDialog.Builder(Activity);
            builder.SetNeutralButton("OK", aButton);
            return builder.Create();
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