Returns a CGImage of the representation that is appropriate for displaying full screen.
- iOS 4.0–9.0Deprecated
A CGImage of the representation that is appropriate for displaying full screen, or
NULL if a CGImage representation could not be generated.
The dimensions of the image are dependent on the device your application is running on; the dimensions may not, however, exactly match the dimensions of the screen.
In iOS 5 and later, this method returns a fully cropped, rotated, and adjusted image—exactly as a user would see in Photos or in the image picker.