iOS TabBar图片

self.tabBar.tintColor = NAVCOLOR_C(34.0, 169.0, 197.0);//后面是UIColor    UITabBarItem *tabBarItem0 = [self.tabBar.items objectAtIndex:0];    UITabBarItem *tabBarItem1 = [self.tabBar.items objectAtIndex:1];    UITabBarItem *tabBarItem3 = [self.tabBar.items objectAtIndex:3];    UITabBarItem *tabBarItem4 = [self.tabBar.items objectAtIndex:4];    tabBarItem0.selectedImage = [tabBarItem0.selectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];    tabBarItem1.selectedImage = [tabBarItem1.selectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];    tabBarItem3.selectedImage = [tabBarItem3.selectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];    tabBarItem4.selectedImage = [tabBarItem4.selectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];    UITabBarItem *tabBarItem2 = [self.tabBar.items objectAtIndex:2];    tabBarItem2.image = [tabBarItem2.image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];    tabBarItem2.selectedImage = [tabBarItem2.selectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];    tabBarItem2.imageInsets = UIEdgeInsetsMake(-5,2,12,2);