自定义UITabBarController标签视图控制器

首先创建一个类，继承自UItabBarController

然后在.m文件中：

这里我有两个宏定义：

#define WIDTH (myView.frame.size.width / 4) //我在写4个按钮（即4个标签，所以是所有宽度除以4）
#define HEIGHT (myView.frame.size.height)

然后写延展，声明了一个按钮属性，用来记录上一个被点击的按钮（这是用来改变颜色，即点击状态的）：

@interface MyTabBarController ()

//之前选中的按钮
@property(nonatomic, retain) UIButton *selectedBtn;

@end

然后开始写自己想要的东西了，在viewDidLoad中：

（1）删除继承父类而来的tabBar，自定义自己想要的视图，其frame为原来tabBar的frame。

（2）然后定义了4个按钮和4个label，即标签和标签下的标题

（3）然后循环给4个按钮添加点击事件，触发事件是同一个clickBtn

- (void)viewDidLoad {
    [super viewDidLoad];
    //删除现有的tabBar
    CGRect rect = self.tabBar.frame;
    [self.tabBar removeFromSuperview];

    //添加自己的视图
    UIView *myView = [[UIView alloc] init];
    myView.backgroundColor = [UIColor whiteColor];
    myView.frame = rect;
    [self.view addSubview:myView];

    //主页发现按钮
    UIButton *findBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    [findBtn setImage:[UIImage imageNamed:@"icon_home_n"] forState:UIControlStateNormal];
    [findBtn setImage:[UIImage imageNamed:@"icon_home_h"] forState:UIControlStateSelected];
    findBtn.tag = 1;
    findBtn.frame = CGRectMake(0, -20, WIDTH, HEIGHT);
    //默认选中是发现按钮
    findBtn.selected = YES;
    [findBtn setTintColor:[UIColor colorWithRed:0.886 green:0.365 blue:0.247 alpha:1.000]];
    self.selectedBtn = findBtn;
    [myView addSubview:findBtn];

    UILabel *findLabel = [[UILabel alloc] initWithFrame:CGRectMake(WIDTH/2 -10, HEIGHT - 20, WIDTH, 20)];
    findLabel.text = @"发现";
    findLabel.textColor = [UIColor colorWithRed:0.804 green:0.325 blue:0.227 alpha:1.000];
    findLabel.font = [UIFont systemFontOfSize:10];
    findLabel.tag = 101;
    [myView addSubview:findLabel];
    [findLabel release];

    //搜索页
    UIButton *searchBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    [searchBtn setImage:[UIImage imageNamed:@"icon_search_n"] forState:UIControlStateNormal];
    [searchBtn setImage:[UIImage imageNamed:@"icon_search_h"] forState:UIControlStateSelected];
    searchBtn.tag = 2;
    searchBtn.frame = CGRectMake(WIDTH, -20, WIDTH, HEIGHT);
    [myView addSubview:searchBtn];

    UILabel *searchLabel = [[UILabel alloc] initWithFrame:CGRectMake(WIDTH + WIDTH/2 -10, HEIGHT - 20, WIDTH, 20)];
    searchLabel.text = @"搜索";
    searchLabel.textColor = [UIColor grayColor];
    searchLabel.font = [UIFont systemFontOfSize:10];
    searchLabel.tag = 102;
    [myView addSubview:searchLabel];
    [searchLabel release];

    //收藏页
    UIButton *costBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    [costBtn setImage:[UIImage imageNamed:@"iconfont-like"] forState:UIControlStateNormal];
    [costBtn setImage:[UIImage imageNamed:@"iconfont-like-selected"] forState:UIControlStateSelected];
    costBtn.tag = 3;
    costBtn.frame = CGRectMake(2 * WIDTH, -20, WIDTH, HEIGHT);
    [myView addSubview:costBtn];

    UILabel *collectLabel = [[UILabel alloc] initWithFrame:CGRectMake(2 * WIDTH + WIDTH/2 -10, HEIGHT - 20, WIDTH, 20)];
    collectLabel.text = @"收藏";
    collectLabel.textColor = [UIColor grayColor];
    collectLabel.font = [UIFont systemFontOfSize:10];
    collectLabel.tag = 103;
    [myView addSubview:collectLabel];
    [collectLabel release];

    //设置页
    UIButton *setUpBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    [setUpBtn setImage:[UIImage imageNamed:@"icon_setting_n"] forState:UIControlStateNormal];
    [setUpBtn setImage:[UIImage imageNamed:@"icon_setting_h"] forState:UIControlStateSelected];
    setUpBtn.tag = 4;
    setUpBtn.frame = CGRectMake(3 * WIDTH, -20, WIDTH, HEIGHT);
    [myView addSubview:setUpBtn];

    UILabel *setUpLabel = [[UILabel alloc] initWithFrame:CGRectMake(3 * WIDTH + WIDTH/2 -10, HEIGHT - 20, WIDTH, 20)];
    setUpLabel.text = @"设置";
    setUpLabel.textColor = [UIColor grayColor];
    setUpLabel.font = [UIFont systemFontOfSize:10];
    setUpLabel.tag = 104;
    [myView addSubview:setUpLabel];
    [setUpLabel release];

    for (int i = 1; i <4; i++) { //4个按钮的点击事件是一个
        UIButton *btn = [self.view viewWithTag:i];
        [btn addTarget:self action:@selector(clickBtn:) forControlEvents:UIControlEventTouchUpInside];
    }
}

（4）然后实现按钮的点击事件clickBtn:实现按钮和其下面标题 选择和未选择状态的切换；也需要实现视图的跳转：

#pragma mark -- 自定义tabBar按钮的点击事件
-(void)clickBtn:(UIButton *)sender {
    //设置上一个按钮
    self.selectedBtn.selected = NO;
    UILabel *titleFormer = [self.view viewWithTag:self.selectedBtn.tag + 100];
    titleFormer.textColor = [UIColor grayColor];

    //设置选中状态
    sender.selected = YES;
    self.selectedBtn = sender;
    UILabel *titleNow = [self.view viewWithTag:self.selectedBtn.tag + 100];
    titleNow.textColor = [UIColor colorWithRed:0.804 green:0.325 blue:0.227 alpha:1.000];

    //跳转相应的视图控制器
    self.selectedIndex = sender.tag - 1;
}

然后就基本实现了一个视图控制器的功能了，自己还有什么需求可以往里加，使用就跟视图的标签视图一样使用就行，只是这里的按钮图片我都是在类里就赋值好了；

这是我自定义的tabBarController下载地址，需要的可以下下来参考参考：

http://download.csdn.net/detail/margaret_mo/9451753