UITabBarController自定义风格Item

有时候我们需要自定义item   下面我模仿微信定制自定义的tabBar

首先  创建UITabBarController *tbc = [[UITabBarController alloc] init];

- (void)createTabBarController

{

    UITabBarController *tbc = [[UITabBarControlleralloc]init];

    [selfsetViewControllersFor:tbc];

    

    //设置tabBar的背景图片

    tbc.tabBar.backgroundImage = [UIImageimageNamed:@"tabbar_bg"];

    NSLog(@"%@", tbc.viewControllers);

    NSLog(@"%@", tbc.childViewControllers);

    self.window.rootViewController = tbc;

    [tbc release];

}

- (void)setViewControllersFor:(UITabBarController *)tbc

{

    NSMutableArray *controllers = [NSMutableArrayarray];

    NSArray *titles = @[@[@"mainframe",@"微信"],

                        @[@"contacts",@"通讯录"],

                        @[@"discover",@"发现"],

                        @[@"me",@"我"]];

    for (NSUInteger i=0; i<titles.count; i++) {

        //拼接视图控制器类名

        NSString *name = [NSStringstringWithFormat:@"ViewController%lu", i];

        //转换为Class变量

        Class cls = NSClassFromString(name);

        BaseViewController *vc = [[cls alloc] init];

        //创建tabBarItem

        //创建正常状态的图片

        NSString *imageName = [NSStringstringWithFormat:@"tabbar_%@", titles[i][0]];

        UIImage *image = [[UIImageimageNamed:imageName]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];

        

        //创建选中状态的图片

        NSString *selectedImageName = [imageNamestringByAppendingString:@"HL"];

        UIImage *selectedImage = [[UIImageimageNamed:selectedImageName]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];

        UITabBarItem *tbi = [[UITabBarItemalloc]initWithTitle:titles[i][1]image:imageselectedImage:selectedImage];

因为我设置背景图片的时候用的是随机颜色  所以每个界面的颜色都不一样