如何解决非静态方法

Question

this is my code in android studio and I can't fix this

Answer 1

use alertDialog (ie alertDialog.setTitle("Confirm Box") ) instead of AlertDialog (or however your class is called) and it should work fine..!

you need to create an instance of a class to be able to call the method properly

(this holds generally in Java - you can only call static methods without creating the object previously..)

in your case the method setTitle is not static so you need to call it via the instance you previously created

Answer 2

You probably need to create an instance of the AlertDialog writing something like:

AlertDialog alertDialogInstance = alertDialog.build();

then you can call alertDialogInstance.setTitle("title");