ios - UITabBar setBackgroundImage not working -

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I'm trying to customize a Tabbar and I use the following code to change the background.

  UIImage * TabBarControllerBackground = [UIImage imageNamed: @ "ios7TabBarBackground"]; [[UITebber Presence] SetbackGage Image: Babeletrix for TabBar Controller Background: UIBarMetricsDefault];   
 I get the following error:  
 
 to cancel app without exception exception 'NSInvalidArgumentException', reason: '- [_UIAppearance setBackgroundImage: forBarMetrics:] : 0x1e868a80 '   
 sent to an unknown selector for example? This works perfect to change my navigation bar like this. The   
 
 
 look around this error:  
  non-exception cancellation due to app 'Ansaianaiviaidiaaragrament exception, because:' - [_UIAppearance setBackgroundImage: forBarMetrics:]: unrecognized selector sent to instance 0x1e868a80 '  
 this is telling you that UIAppearance  does not apply setBackgroundImage: forBarMetrics:  selector  
 you'll leave the last argument - apparently Uaiapiarens does not like it. Change it to:  
  [[UTibber Presence] Setbackgram Image: TabBer Controller Background];