2D Graphics, Canvas, Bitmap, Accelerometer, SensorManager, Multitouch Events, MediaStore, Printing, Android 6.0 Permissions, Gradle
In this chapter you’ll:
Detect when the user touches the screen, moves a finger across the screen and removes a finger from the screen.
Process multiple touches so the user can draw with multiple fingers at once.
SensorManager and the accelerometer to detect motion events.