I have a class viewcontroller
. In another class, SigViewController
, I have a function which captures an image of a signature. I would like to call the function in the viewcontroller
class (specifically in an IBAction).
In viewcontroller
I have the following.
@IBAction func sigsave(sender: AnyObject) {
SigViewController().getSignature()
}
In SigViewController
the function is...
func getSignature() ->UIImage {
UIGraphicsBeginImageContext(CGSizeMake(self.bounds.size.width,
self.bounds.size.height))
self.layer.renderInContext(UIGraphicsGetCurrentContext())
var signature: UIImage = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
println("saved image")
return signature
}
The viewcontroller
is returning the error `Use of unresolved identifier SigViewController.
Thanks for any help.
getSignature()
is an instance function so you need to make an instance of SigViewController
class to call it. You can call class functions in another class using the syntax ClassName.FunctionName()
if you mark the function as a class function. But when you do that you don't have access to any non class level instance variables.
Regular functions are like - methods in Objective-C, class functions are like + functions.
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