How to click or tap on a TextView text

I know this is so easy (doh...) but I am looking for a way to run a method on tapping or clicking a TextView line of text in an Android App.

Clickable widgets in android

The developer documentation has seemed to have failed me here. I can create a static widget without thinking, I can even create a widget like the analogue clock widget that will update itself, however, I can not for the life of me figure out how to create a widget that reacts to when a user clicks on it. Here is the best code sample that the developer documentation gives to what a widget activity should contain (the only other hint being the API demos, which only creates a static widget):

javascript onclick combining 2 events does not work on ios (iPhone, iPad)

I'm combining 2 javascripts in the onclick to do 2 things:

<ToggleButton> onClickListener - changing drawable back to default

I've got this ToggleButton which is supposed to change the drawables (and functions) of some other buttons upon toggling on/off.

Android ImageView onClickListener won"t work

I am using a View Object named CameraView that implements View and uses a Hud-Object to create the HUD for a game. In this Hud-Class i use a LinearLayout to place ImageViews. I want these ImageViews to be clickable and to be able to fire some Code on Click. Thats why I use the onClickListener for each of the ImageViews. But it won't work at all.