Listening to Touch Events

The most basic form of gesture recognition is the touch event. Touch events are the lowest level of user interaction with the touchscreen. Events include putting a finger on the screen, sliding a finger along the screen, and lifting a finger off the screen. Each of these represents a discrete touch event. There are two ways you can listen for these events: by registering an OnTouchListener on a view and implementing the onTouchEvent method, or by implementing your own view and overriding its onTouchEvent method. These methods are called with a MotionEvent object containing information about the event.

Here is a simple example class that overrides View and implements the onTouchEvent method:

1. Create a class named TouchExample that extends View: