Dialog throwing "Unable to add window — token null is not for an application” with getApplication() as context

Question

My Activity is trying to create an AlertDialog which requires a Context as a parameter. This works as expected if I use:

AlertDialog.Builder builder = new Al         


        

Answer 1

If you are outside of the Activity then you need to use in your function "NameOfMyActivity.this" as Activity activity, example:

public static void showDialog(Activity activity) {
        AlertDialog.Builder builder = new AlertDialog.Builder(activity);
        builder.setMessage("Your Message")
        .setPositiveButton("Yes", dialogClickListener)
        .setNegativeButton("No", dialogClickListener).show();
}


//Outside your Activity
showDialog(NameOfMyActivity.this);