UIBarButtonItem: How can I find its frame?

Question

I have a button in a toolbar. How can I grab its frame? Do UIBarButtonItems not have a frame property?

Answer 1

You can roughly calculate it by using properties like layoutMargins and frame on the navigationBar, combined with icon size guides from Human Interface Guidelines and take into count the current device orientation:

- (CGRect)rightBarButtonFrame {
    CGFloat imageWidth = 28.0;
    CGFloat imageHeight = UIDevice.currentDevice.orientation == UIDeviceOrientationLandscapeLeft || UIDevice.currentDevice.orientation == UIDeviceOrientationLandscapeRight ? 18.0 : 28.0;
    UIEdgeInsets navigationBarLayoutMargins = self.navigationController.navigationBar.layoutMargins;
    CGRect navigationBarFrame = self.navigationController.navigationBar.frame;
    return CGRectMake(navigationBarFrame.size.width-(navigationBarLayoutMargins.right + imageWidth), navigationBarFrame.origin.y + navigationBarLayoutMargins.top, imageWidth, imageHeight);
}