设置TabBar选中与未选中图片

-(void)settingTabbarController{
    self.tabBarViewControoler.tabBar.selectionIndicatorImage = [UIImage imageNamed:@"tabbar_selected"];
    for (int i = 0; i < self.tabBarViewControoler.tabBar.items.count; i++) {
        UITabBar* tabbar = self.tabBarViewControoler.tabBar;
        UITabBarItem * item = [tabbar.items objectAtIndex:i];
        UIImage *imageNormal;
        UIImage* imageSelected;
        switch (i) {
            case 0:
            {
                imageNormal = [UIImage imageNamed:@"tabhost_one_bg_nor"];
                imageSelected = [UIImage imageNamed:@"tabhost_one_bg_sel"];
            }
            break;
            case 1:
            {
                imageNormal = [UIImage imageNamed:@"tabhost_two_bg_nor"];
                imageSelected = [UIImage imageNamed:@"tabhost_two_bg_sel"];
            }
            break;
            case 2:
            {
                imageNormal = [UIImage imageNamed:@"tabhost_three_bg_nor"];
                imageSelected = [UIImage imageNamed:@"tabhost_three_bg_sel"];
            }
            break;
            case 3:
            {
                imageNormal = [UIImage imageNamed:@"tabhost_four_bg_nor"];
                imageSelected = [UIImage imageNamed:@"tabhost_four_bg_sel"];
            }
            break;
            default:
            break;
        }
       
        if (ios7) {
            item.selectedImage = [imageSelected imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
            item.image = [imageNormal imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
            tabbar.tintColor = [UIColor whiteColor];
        }else{
            [item setFinishedSelectedImage:imageSelected withFinishedUnselectedImage:imageNormal];
        }
       
    }
}