I want to have a class "Utils", that will have several methods used all over my code. For example, I have a top bar with a `textview` and two `ImageButton`s that must display different texts and icons on different activities.

I find myself writing stuff like this on every activity:

```
(TextView) topBarText = (TextView) findViewById(R.id.topBarText);
topBarText.setText(R.id.mytextForThisView);

```

I'd like to findViewById once in my whole app, and call a method `setupTopBar(String text, R.id.iconForImageButton1, R.id.iconForImageButton2)`, or even pass the current Activity's id and let the method figure out what to show in the text and images. 

I created the class `Util`, but it doesn't extend `Activity`. The problem is that if it doesn't, `findViewById` isn't accessible, so I can't use it. 

What's the pattern to do something like this in Android?