OnTouchListener

ScaleGestureDetector

Any tactile, i.e., using touch, interaction with the screen of the mobile device.

A "digital" handshake used for electronic verifications

A hand motion, like a wave, capture by the camera of a mobile device.

Test cases

Drivers

Stubs

A lot!

Exactly three (happy path, boundary path, exceptional path)

We need one test case for each invalid and boundary value and enough test cases to cover all valid equivalence classes.

The identifier does not change for the duration of the movement associated with the finger, but the index of the finger may change from one event to the next.

There is no difference

The index refers to the finger, while the identifier to the motion event.

A continuous single line that represents a character or another symbol.

A line to represent the number 1.

A single straight line

Find a view and focus on it.

Perform an action on a view.

Test the value of a property or data of a view.

Test cases

Drivers

Stubs

A device resource, like CPU, memory, and disk, that does not perform any task at the moment.

An activity that is not visible at the moment.

An object that represents an asynchronous task running in the background.

Swipe

Click

Flick