//初始化视图控制器UIViewController * vc1=[[UIViewController alloc] init];vc1.view.backgroundColor=[UIColor redColor];UIViewController * vc2=[[UIViewController alloc] init];vc2.view.backgroundColor=[UIColor greenColor];UIViewController * vc3=[[UIViewController alloc] init];vc3.view.backgroundColor=[UIColor yellowColor];UIViewController * vc4=[[UIViewController alloc] init];vc4.view.backgroundColor=[UIColor orangeColor];UIViewController * vc5=[[UIViewController alloc] init];vc5.view.backgroundColor=[UIColor purpleColor];//为tabbarController添加控制器UITabBarController * tabVC=[[UITabBarController alloc] init];tabVC.delegate=self;tabVC.viewControllers=@[vc1,vc2,vc3,vc4,vc5 ];//初始化系统UITabBarItemUITabBarItem * item1=[[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemFavorites tag:101];vc1.tabBarItem=item1;UITabBarItem * item2=[[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemBookmarks tag:102];vc2.tabBarItem=item2;//初始化带图片的UITabBarItemUIImage * selImage=[UIImage imageNamed:@"tabbar_cate_f"];selImage=[selImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];UITabBarItem * item3=[[UITabBarItem alloc] initWithTitle:@"最近" image:[UIImage imageNamed:@"tabbar_cate"] selectedImage:selImage];NSDictionary * dic=@{NSFontAttributeName:[UIFont systemFontOfSize:20],NSForegroundColorAttributeName:[UIColor redColor]};[item3 setTitleTextAttributes:dic forState:UIControlStateSelected];vc3.tabBarItem=item3;//初始化带图片的UITabBarItemUITabBarItem * item4=[[UITabBarItem alloc] initWithTitle:@"你好" image:[UIImage imageNamed:@"tabbar_fov"] tag:104];vc4.tabBarItem=item4;UITabBarItem * item5=[[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemSearch tag:105];vc5.tabBarItem=item5;//将TabBarController设置为窗口的根控制器
self.window.rootViewController=tabVC;

#pragma mark - loadVC
- (void) _loadVC{self.tabBar.hidden=YES;//1 创建视图控制器JRViewController * vc1=[[JRViewController alloc] init];UIViewController * vc2=[[UIViewController alloc] init];vc2.view.backgroundColor=[UIColor greenColor];UIViewController * vc3=[[UIViewController alloc] init];vc3.view.backgroundColor=[UIColor yellowColor];UIViewController * vc4=[[UIViewController alloc] init];vc4.view.backgroundColor=[UIColor blueColor];self.viewControllers=@[vc1,vc2,vc3,vc4];}#pragma mark - _makeTabBar
- (void)_makeTabBar{//1 >定制tabbarUIView * bgview=[[UIView alloc] initWithFrame:CGRectMake(0, kHeight-49, kWidth, 49)];bgview.backgroundColor=[UIColor colorWithRed:0 green:0 blue:0 alpha:0.5];[self.view addSubview:bgview];//2 >定制btnCGFloat space=(kWidth-2*kLeftSpace-5*kBtSize)/4.0+kBtSize;for(int i=0;i<5;i++){NSDictionary * dic=_array[i];//1 初始化button大小JRButton * button= [[JRButton alloc] initWithFrame:CGRectMake(kLeftSpace+i*space, 49/2.0-kBtSize/2.0, kBtSize, kBtSize)];//2 初始化button的标题和图片[button initButtonWithTitle:dic[@"title"] andImage:dic[@"image"]];//3 为button 设置tag 和代理button.tag=i;button.delegate=self;[bgview addSubview:button];//4 将button 加入到数组，来调整选中背景的位置
        [_btArray addObject:button];}//3 >增加选中图标_selectView=[[UIImageView alloc] initWithFrame:CGRectMake(10, 49/2.0-(kBtSize+2)/2.0, kBtSize+4, kBtSize+4)];UIButton * button=_btArray[0];_selectView.center=button.center;_selectView.image=[UIImage imageNamed:@"bg"];[bgview addSubview:_selectView];[bgview sendSubviewToBack:_selectView];}#pragma mark - 加载数据
- (void) _loadData{_btArray=[NSMutableArray array];NSDictionary * dic1=@{@"title":@"电影",@"image":[UIImage imageNamed:@"movie_cinema"]};NSDictionary * dic2=@{@"title":@"新闻",@"image":[UIImage imageNamed:@"msg_new"]};NSDictionary * dic3=@{@"title":@"top",@"image":[UIImage imageNamed:@"star_top250"]};NSDictionary * dic4=@{@"title":@"影院",@"image":[UIImage imageNamed:@"icon_cinema"]};NSDictionary * dic5=@{@"title":@"更多",@"image":[UIImage imageNamed:@"more_select_setting"]};_array=@[dic1,dic2,dic3,dic4,dic5];}

#pragma mark - ButtonDelegate
- (void)changePage:(NSInteger)index{//1 改变选中图片UIButton * button=_btArray[index];[UIView beginAnimations:nil context:nil];_selectView.center=button.center;[UIView commitAnimations];//2 切换视图控制器self.selectedIndex=index;
}

/***  初始化图片和标题**  @param title 标题*  @param image 图片*/
- (void) initButtonWithTitle:(NSString *) title andImage:(UIImage *) image{if(self) {//1> 添加ImageUIImageView * imageView=[[UIImageView alloc] initWithFrame:CGRectMake(self.frame.size.width/2.0-kImageSize/2.0, 2, kImageSize, kImageSize)];imageView.contentMode=UIViewContentModeScaleAspectFit;imageView.image=image;[self addSubview:imageView];//2> 添加titleUILabel * label=[[UILabel alloc] initWithFrame:CGRectMake(0, kImageSize, self.frame.size.width, self.frame.size.height-kImageSize)];label.text=title;label.textColor=[UIColor whiteColor];label.textAlignment=NSTextAlignmentCenter;label.font=[UIFont boldSystemFontOfSize:13];[self addSubview:label];[self addTarget:self action:@selector(showClick) forControlEvents:UIControlEventTouchUpInside];}}

作者：杰瑞教育
出处：http://www.cnblogs.com/jerehedu/ 
版权声明：本文版权归烟台杰瑞教育科技有限公司和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。
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