adding a layer mask to UIToolBar/UINavigationBar/UITabBar breaks translucency

Question

Im upgrading my UI to iOS 7, and have been using a custom tab bar which has a CAShapeLayer used as a mask. Ive been trying to add dynamic blur by having a UIToolBar underneath, but if i try setting the layer.mask property on the toolbar translucency is gone, and i just have it semi transparent (but masking works of course). Is there a way to get this working? Ive also seen this behavior when adding a subview to these classes.

Answer 1

If "translucency is gone" means it becomes totally transparent and if you tested just on simulator, it is a known bug of simulator. If you run it on devices, it should work as expected.