AlertDialog没有出现

Question

public void MsgBox(String title, String msg){

    AlertDialog.Builder dlgAlert  = new AlertDialog.Builder(this);

    dlgAlert.setMessage("The message");
    dlgAlert.setTitle("Titel");

    dlgAlert.setPositiveButton("OK", null);

    dlgAlert.create().show();
}

This is the method I am using, I don't understand what is wrong with it. I've even replaced null with the common code you would add, but the box still won't pop up. Any suggestions?

Answer 1

try:

 new AlertDialog.Builder(this.getContext());

maybe you're not calling it from a class that's actually an Activity

Answer 2

Pass the context

Issue was that you are not creating AlertDialog object and you are showing alert dialog using AlertBuilder object.

Update

public void MsgBox(String title, String msg, Context context){
        AlertDialog.Builder dlgAlert  = new AlertDialog.Builder(context);
        dlgAlert.setMessage("The message");
        dlgAlert.setTitle("Titel");
        dlgAlert.setPositiveButton("OK", null);

            AlertDialog alertDialog = dlgAlert.create();

            // show it
            alertDialog.show();
    }