无法自定义iOS5中的标签栏

我在iOS 5中有一个选项卡，并希望针对所选状态和未选状态为TabBarButton创建图像。下面是代码：无法自定义iOS5中的标签栏

BOOL isIOS5 = [[[UIDevice currentDevice] systemVersion] floatValue] >= 5.0; 

    if(isIOS5) 
    { 
     //[tabBarController.tabBar setBackgroundImage:[UIImage imageNamed:@"Tab-bg"]]; 
     // [tabBarController.tabBar setSelectionIndicatorImage:[UIImage imageNamed:@"Cell-bg"]]; 

     [[tabBarController.tabBar.items objectAtIndex:0] setFinishedSelectedImage:[UIImage imageNamed:@"list-menu-selected"] withFinishedUnselectedImage:[UIImage imageNamed:@"list-menu"]]; 
     [[tabBarController.tabBar.items objectAtIndex:1] setFinishedSelectedImage:[UIImage imageNamed:@"gallery-menu-selected"] withFinishedUnselectedImage:[UIImage imageNamed:@"gallery-menu"]]; 
     [[tabBarController.tabBar.items objectAtIndex:2] setFinishedSelectedImage:[UIImage imageNamed:@"map-menu-selected"] withFinishedUnselectedImage:[UIImage imageNamed:@"map-menu"]]; 
     [[tabBarController.tabBar.items objectAtIndex:3] setFinishedSelectedImage:[UIImage imageNamed:@"submit-menu-selected"] withFinishedUnselectedImage:[UIImage imageNamed:@"submit-menu"]]; 
     [[tabBarController.tabBar.items objectAtIndex:4] setFinishedSelectedImage:[UIImage imageNamed:@"search-menu-selected"] withFinishedUnselectedImage:[UIImage imageNamed:@"search-menu"]]; 
    }

即图像的非Retina显示屏44px高度，他们应该是足够的，以填补空间

的问题是，dont't将图像从顶部至底部：在tabbar的底部还有一些空间没有填充。有没有人有过这个问题？

来源

2012-03-09 Alex