How to call method with View Parameter on Android Studio

Simple. Just pass the view in arguments.

Way 1: if you are calling openButton() method from layout file then, simply call method the following way by applying onClick attribute

<Button
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="Go to next screen"
   . . . 
   android:onClick="openButton" />

Way 2: if you are trying to call it from button's onclick by setting OnClickListener, then, simply pass the view you are getting inside OnClickListener's onClick(View view) method as follows:

button.setOnClickListener(new OnClickListener(){

    @override
    public void onClick(View view)
    {
       openButton(view);
    }

});

Well, with the code that you provided, you usually use some sort of an onCickListener.

Open your XML file, and add android:onClick="openButton" to the button that you want to call that method. So your XML for the button will look something like this:

<Button
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="Click me!"
   . . . 
   android:onClick="openButton" />

That will automatically call that method and pass in a view.

The other option, as BatScream mentioned in the comments, is to just pass in null, as you aren't using the view anyway. HOWEVER, this is bad practice - it'll work this time, but in general, you should follow the system that Android uses. Just go with an onClick in the XML.

---

If you HAVE to use simple the way it is, do it this way:

public void simple(){
    openButton(null);
}

You should be able to do

 button.performClick(); 

assuming openButton() is the method assigned to buttons onClick. Meaning, somewhere in your xml you probably have a Button with android:onClick="openButton". Then if you have that Button instantiated and assigned to the variable button, calling the View's performClick() method would call openButton()