Question

I have increased the tab bar height by using CGRectMake, and my questions is: can I increase the shadow (that appears over the tab bar item when is selected) height ? and how ?

Answer 1

For your question even I didn’t try it before, but I think it’s possible, from this reference link http://developer.apple.com/library/ios/documentation/UIKit/Reference/UITabBar_Class/UITabBar_Class.pdf, please look at shadowImage Discussion

Discussion
The default value is nil, which corresponds to the default shadow image. When non-nil, this property
represents a custom shadow image to show instead of the default. For a custom shadow image to be shown,
a custom background image must also be set using the backgroundImage (page 5) property. If the default
background image is used, then the defaultshadow image will be used regardless of the value of this property

UPDATE: Thank you for Muhannad Dasoqie, to discover this by himself 🙂

[self.tabbarController.tabBar setSelectionIndicatorImage:[UIImage imageNamed:@"Selected_Tab_Shadow.png"]];