cannot update view.layer.frame in viewDidLoad?

Question

I am trying to execute following code in viewDidLoad method of my single view controller project:

self.view.layer.frame = CGRectInset(self.view.layer.frame, 20,          


        

Answer 1

I also experienced this issue on Ray Wenderlich's tutorial 'Introduction to CALayers'. http://www.raywenderlich.com/2502/introduction-to-calayers-tutorial

It seems shrinking the entire view controllers view is not the best thing to do. Instead create a sub view and call CGRectInset on that e.g in your view controllers viewDidLoad

UIView *viewToManipulate = [[UIView alloc] initWithFrame:CGRectMake(0.0,0.0, self.view.bounds.size.width, self.view.bounds.size.height)];

[self.view addSubview:viewToManipulate];

viewToManipulate.backgroundColor = [UIColor redColor];
viewToManipulate.layer.cornerRadius = 20.0;
viewToManipulate.layer.frame = CGRectInset(self.view.layer.frame, 20, 20);