C# 如何在 Monodroid 中显示 MessageBox

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时间:2020-08-10 01:36:17  来源:igfitidea点击:

How to display MessageBox in Monodroid

c#androidxamarin.androidandroid-alertdialog

提问by MilkBottle

How can I display a message box in Xamarin.Android? How can I get the yes or no response from the message box?

如何在 Xamarin.Android 中显示消息框?如何从消息框中获得是或否响应?

--- Updated :

- - 更新 :

myBtn.Click += (sender, e) => 
{
   new AlertDialog.Builder(this)
   .SetMessage("hi")
   .Show();
};

回答by Alex Wiese

You can use the AlertDialog.Buiderclass from within an Activity.

您可以AlertDialog.BuiderActivity.

new AlertDialog.Builder(this)
    .SetPositiveButton("Yes", (sender, args) =>
    {
        // User pressed yes
    })
    .SetNegativeButton("No", (sender, args) =>
    {
        // User pressed no 
    })
    .SetMessage("An error happened!")
    .SetTitle("Error")
    .Show();

回答by Ram Ch. Bachkheti

Try this:

尝试这个:

public void ShowAlert (string str)
        {
            AlertDialog.Builder alert = new AlertDialog.Builder (this);
            alert.SetTitle (str);
            alert.SetPositiveButton ("OK", (senderAlert, args) => {
                // write your own set of instructions
                });

            //run the alert in UI thread to display in the screen
            RunOnUiThread (() => {
                alert.Show ();
            });
        }