tabBar用block實現自訂

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- (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];    }    //建立標籤控制器    tabBarViewContr=[[UITabBarController alloc]init];    tabBarViewContr.viewControllers=viewContrs;        //把圖片存入5個對象中再存入數組中    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];    }        //自訂的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;}


自訂的TabBar實現檔案

- (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];                //顯示文字        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);}