Invalid context error on iOS 7 when adding a UIPickerView inside a UIActionSheet?

Question

I have an UIPickerView inside an UIActionSheet and have done that in a way suggested by many others here at SO:

Add UIPickerView & a Button in Action sheet - How

Answer 1

A workaround for this 'invalid context 0x0' warning is to init the UIActionSheet with a non nil title (non-nil buttons also resolve the error but result in visual artefacts).

UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"" 
                                                         delegate:nil
                                                cancelButtonTitle:nil
                                           destructiveButtonTitle:nil
                                                otherButtonTitles:nil];

You will then need to adjust the actionsheet's frame for it to position properly in both iOS7 and previous versions (make sure to do this after the showInView method).

CGRect newFrame = actionSheet.frame;
newFrame = self.view.bounds.size.height - myCustomPicker.frame.size.height;
newFrame = myCustomPicker.frame.size.height;
actionSheet.frame = newFrame;