tabBar用block实现自定义

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

    // Override point for customization after application launch.

    self.window.backgroundColor = [UIColor whiteColor];

    [self.window makeKeyAndVisible];

    

    NSMutableArray *viewContrs=[[NSMutableArray alloc]init];

    for (int i=0; i<5; i++)

    {

        UIViewController *viewContr=[[UIViewController alloc]init];

        viewContr.view.backgroundColor=[UIColor colorWithRed:i*0.2 green:i*0.2 blue:0.5 alpha:0.8];

        [viewContrs addObject:viewContr];

    }

    //创建标签控制器

    tabBarViewContr=[[UITabBarController alloc]init];

    tabBarViewContr.viewControllers=viewContrs;

    

    //把图片存入5个对象中再存入数组中

    NSMutableArray *items=[[NSMutableArray alloc]init];

    for (int i=0; i<5; i++)

    {

        Items *item=[[Items alloc]init];

        NSString *str=[NSString stringWithFormat:@"%d.jpg",i+1];

        [item setImage:[UIImage imageNamed:str] title:str];

        [items addObject:item];

    }

    

    //自定义的tabBar

    TabBar *tabBar1=[[TabBar alloc]initWithFrame:tabBarViewContr.tabBar.bounds];

    tabBar1.itemArray=items;

//    tabBar1.delegate=self;

    tabBar1.block=^(TabBar *sender,NSInteger tag){

//        [self tabBar:sender didTag:tag];

        tabBarViewContr.selectedIndex=tag;

    };

    

//    tabBarViewContr.tabBar.hidden=YES;

    [tabBarViewContr.tabBar addSubview:tabBar1];

    

    

    self.window.rootViewController=tabBarViewContr;

    return YES;

}






自定义的TabBar实现文件

- (void)setItemArray:(NSArray *)items

{

    CGFloat width=self.frame.size.width/items.count;

    for (int i=0; i<items.count; i++)

    {

        Items *item=[items objectAtIndex:i];

        UIButton *btn=[UIButton buttonWithType:UIButtonTypeCustom];

        btn.frame=CGRectMake(i*width, 0, width, self.frame.size.height-15);

        [btn addTarget:self action:@selector(didClicked:) forControlEvents:UIControlEventTouchUpInside];

        btn.tag=i;

        [btn setImage:item.image forState:UIControlStateNormal];

        [self addSubview:btn];

        

        //显示文字

        UILabel *label=[[UILabel alloc]initWithFrame:CGRectMake(i*width, self.frame.size.height-15, width, 15)];

        label.text=item.title;

        label.textAlignment=NSTextAlignmentCenter;

        [self addSubview:label];

    }

}

 

- (void)didClicked:(UIButton *)sender

{

    if (_delegate&&[_delegate respondsToSelector:@selector(tabBar:didTag:)])

    {

        [_delegate tabBar:self didTag:sender.tag];

    }

    _block(self,sender.tag);

}