以編程方式添加選項卡欄控制器到當前應用程序流程

我想向我當前的應用程序流程添加選項卡控制器控制器。目前，我有一個頁面上有一個按鈕，點擊按鈕打開一個新的視圖控制器，其中包含用戶登錄的網頁視圖，登錄後我想將他帶到他的主頁，其中導航欄有他的名字和右側的註銷按鈕。主頁還應該有一個帶有3個不同選項卡的標籤欄。我可以從webview加載主頁視圖並獲得導航欄。但我無法添加tabBar並使其工作。我很困惑添加TabBar的代碼添加到哪裏。我使用下面的代碼添加標籤欄 -以編程方式添加選項卡欄控制器到當前應用程序流程

UITabBarController *tabBar = [[UITabBarController alloc] init]; 

HomeViewController *home = [[PPHomeViewController alloc] initWithUserName:[self.userInfo objectForKey:@"name"] Email:[self.userInfo objectForKey:@"email"] Phone:[self.userInfo objectForKey:@"phone_number"]]; 
home.tabBarItem = [[UITabBarItem alloc]initWithTabBarSystemItem:UITabBarSystemItemFavorites tag:1]; 
UINavigationController *homeNavController = [[UINavigationController alloc]initWithRootViewController:home]; 

RequestViewController *req = [[RequestMoneyViewController alloc]init]; 
req.tabBarItem = [[UITabBarItem alloc]initWithTabBarSystemItem:UITabBarSystemItemFavorites tag:2]; 
UINavigationController *reqNavController = [[UINavigationController alloc]initWithRootViewController:req]; 

UIViewController *thirdViewController = [[UIViewController alloc]init]; 
thirdViewController.tabBarItem = [[UITabBarItem alloc]initWithTabBarSystemItem:UITabBarSystemItemFavorites tag:3]; 
UINavigationController *thirdNavController = [[UINavigationController alloc]initWithRootViewController:thirdViewController]; 

UIViewController *fourthViewController = [[UIViewController alloc]init]; 
thirdViewController.tabBarItem = [[UITabBarItem alloc]initWithTabBarSystemItem:UITabBarSystemItemFavorites tag:3]; 
UINavigationController *fourthNavController = [[UINavigationController alloc]initWithRootViewController:fourthViewController]; 

tabBar.viewControllers = [[NSArray alloc] initWithObjects:homeNavController, reqNavController, thirdNavController, fourthNavController, nil]; 
tabBar.delegate=self; 
tabBar.selectedIndex=0; 

UIImageView *homeImg=[[UIImageView alloc]initWithFrame:CGRectMake(0, 432, 80, 49)]; 
homeImg.tag=11; 
homeImg.image=[UIImage imageNamed:@"footer"]; 

UIImageView *reqImg=[[UIImageView alloc]initWithFrame:CGRectMake(81, 432,80, 49)]; 
reqImg.tag=12; 
reqImg.image=[UIImage imageNamed:@"footer"]; 

UIImageView *sendImg=[[UIImageView alloc]initWithFrame:CGRectMake(162, 432,80, 49)]; 
sendImg.tag=13; 
sendImg.image=[UIImage imageNamed:@"footer"]; 

UIImageView *localImg=[[UIImageView alloc]initWithFrame:CGRectMake(243, 432, 80, 49)]; 
localImg.tag=14; 
localImg.image=[UIImage imageNamed:@"footer"]; 

[tabBar.view addSubview:homeImg]; 
[tabBar.view addSubview:reqImg]; 
[tabBar.view addSubview:sendImg]; 
[tabBar.view addSubview:localImg]; 

[[[UIApplication sharedApplication]keyWindow]addSubview:tabBar.view];

目前我已經把一個視圖控制器TabViewController延伸的UITabBarController的viewDidLoad中上面的代碼。在我的web視圖控制器我已經把下面的代碼 -

TabViewController *tab=[[TabViewController alloc] init]; 
tab.userInfo=userInfo; 
[self presentViewController:tab animated:YES completion:nil];

但是當我點擊一個比已經打開其他任何選項卡中的應用程序，一旦崩潰。請幫助。

來源

2013-05-06 Akshay Goel

你必須檢查你的視圖樹......在這查看你正在添加標籤欄.. – Shivaay 2013-05-06 10:34:04

我想在視圖中添加tabBar在記錄後in - 即視圖樹中webview之後的視圖。 – 2013-05-06 10:45:58

您是否嘗試創建'UINavigationController'作爲根視圖控制器並在登錄時推送TabViewController？ – Devang 2013-05-06 12:20:13

我過去的做法是創建一個UITabBarController子類，其中包含上面所有的tabBar創建代碼。

然後使用UINavigationController將tabBar子類推送到屏幕。

這裏是我的UITabBarController子類的一個示例：

- (void)viewDidLoad { 
    [super viewDidLoad]; 

    UIViewController *view1 = [[UIViewController alloc] init]; 
    UIViewController *view2 = [[UIViewController alloc] init]; 
    UIViewController *view3 = [[UIViewController alloc] init]; 

    NSMutableArray *tabViewControllers = [[NSMutableArray alloc] init]; 
    [tabViewControllers addObject:view1]; 
    [tabViewControllers addObject:view2]; 
    [tabViewControllers addObject:view3]; 

    [self setViewControllers:tabViewControllers]; 
    //can't set this until after its added to the tab bar 
    view1.tabBarItem = 
     [[UITabBarItem alloc] initWithTitle:@"view1" 
            image:[UIImage imageNamed:@"view1"] 
             tag:1]; 
    view2.tabBarItem = 
     [[UITabBarItem alloc] initWithTitle:@"view2" 
            image:[UIImage imageNamed:@"view3"] 
             tag:2]; 
    view3.tabBarItem = 
     [[UITabBarItem alloc] initWithTitle:@"view3" 
            image:[UIImage imageNamed:@"view3"] 
             tag:3];  
}

來源

2013-05-06 14:31:23

好的回答很好 – 2017-11-08 09:34:12

集代表UITabBarDelegate

這裏的TabBar視圖 - 控制圖像 http://prntscr.com/ba5oks

#pragma mark- Tapbar delegate 

- (void)deselectTabBarItem:(UITabBar*)tabBar 
{ 
    tabBar.selectedItem = nil; 
} 

- (void)tabBar:(UITabBar *)tabBar didSelectItem:(UITabBarItem *)item 
{ 
    [self performSelector:@selector(deselectTabBarItem:) withObject:tabBar afterDelay:0.2]; 

    switch (item.tag) { 
     case 0: 
      //perform action 
      break; 
     case 1: 
      //do whatever you want to do. 
      break; 
     case 2: 
      //call method 
      break; 
     default: 
      break; 
    } 
}

來源

2016-05-30 11:52:40 Manjeet

以編程方式添加選項卡欄控制器到當前應用程序流程

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