Returns the current graphics context.
SDKs
- iOS 2.0+
- tvOS 9.0+
- watchOS 2.0+
Framework
- UIKit
Declaration
func UIGraphicsGetCurrentContext() -> CGContext?
Return Value
The current graphics context.
Discussion
The current graphics context is nil by default. Prior to calling its draw method, view objects push a valid context onto the stack, making it current. If you are not using a UIView object to do your drawing, however, you must push a valid context onto the stack manually using the UIGraphics function.
This function may be called from any thread of your app.