core plot error?

Question

hi, i am using core plot framework,when i run following code in viewdidload gives crash.the view is as custom view...

graph = [(CPXYGraph *)[CPXYGraph alloc] initWithFrame:CGRectZero];
CPLayerHostingView *hostingView = (CPLayerHostingView *)self.view;
hostingView.hostedLayer = graph;**(gives error)**

what i have to do? any help please?

Answer 1

What error are you getting? Is self.view a CPLayerHostingView or some other kind of UIView?

Answer 2

You can't just cast self.view to a CPLayerHostingView. You need to make sure it is actually is one. You can do that in Interface Builder or in code if you're initializing your view that way.