添加TabBarController作为视图的子视图

Question

当我的应用程序启动时,我正在加载启动画面.然后我想加载一个TabBarController和它的ViewControllers.但是,我的TabBarController窗口不会缩放到屏幕大小.

底部的TabBar可能会被切断,并且状态栏下方的屏幕顶部有一个细长的20像素间隙.如何正确调整TabBarController的大小？

这是加载启动视图的SplashViewController中的代码,以及TabBarController:

 -(void)loadView{
// Init the view
CGRect appFrame = [[UIScreen mainScreen] applicationFrame];
UIView *view = [[UIView alloc] initWithFrame:appFrame];
view.autoresizingMask = UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleWidth;
self.view = view;
[view release];

splashImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Splash.png"]];
splashImageView.frame = CGRectMake(0,0,320,458);
[self.view addSubview:splashImageView];

viewController = [[FlashCardViewController alloc] initWithNibName:@"FlashCardViewController"  bundle:[NSBundle mainBundle]];
//viewController.view.bounds = [[UIScreen mainScreen]bounds];
viewController.title = @"Quiz";
viewController.tabBarItem.image = [UIImage imageNamed:@"puzzle.png"];

UIViewController *viewController2 = [[UIViewController alloc] initWithNibName:nil  bundle:nil];
viewController2.title = @"Nada";
viewController2.tabBarItem.image = [UIImage imageNamed:@"magnifying-glass.png"];
//viewController.view.alpha = 0.0;
//[self.view addSubview:viewController.view];

tabBarController = [[UITabBarController alloc] init];
tabBarController.viewControllers = [NSArray arrayWithObjects:viewController, viewController2, nil];
[viewController2 release];
tabBarController.view.alpha = 0.0;
//tabBarController.tabBarItem.image = [UIImage imageNamed:@"State_California.png"];
//tabBarController.tabBarItem.title = @"State_California.png";
tabBarController.view.bounds = [[self view] bounds];
//tabBarController.view.frame = [[UIScreen mainScreen] applicationFrame];
[self.view addSubview:tabBarController.view];

timer = [NSTimer scheduledTimerWithTimeInterval:2.0 target:self selector:@selector(fadeScreen) userInfo:nil repeats:NO]; 
}
-(void) fadeScreen
{
[UIView beginAnimations:nil context:nil]; // begin animation block
[UIView setAnimationDuration:0.75]; // sets animation duration
[UIView setAnimationDelegate:self]; // sets the delegate for this block
[UIView setAnimationDidStopSelector:@selector(finishedFading)]; // Calls finishFading
self.view.alpha = 0.0; //  // Fades the alpha to 0 over animation
[UIView commitAnimations]; // Commits this block, done
}

-(void) finishedFading
{
[UIView beginAnimations:nil context:nil]; // Begin animation block
[UIView setAnimationDuration:0.75]; // set duration
self.view.alpha = 1.0; // fades the view to 1.0 alpha over .75 seconds
//viewController.view.alpha = 1.0;
tabBarController.view.alpha = 1.0;
[UIView commitAnimations];
[splashImageView removeFromSuperview];
}

Answer 1

我刚刚完成了相同的问题并遇到了同样的问题,但最终我得到了它的工作.

1. 在Xcode中创建一个View Controller类Test1ViewController并添加以下内容:

   @interface Test1ViewController : UIViewController {
       IBOutlet UITabBarController *tbc;
   }
   
   @property (nonatomic,retain) IBOutlet UITabBarController *tbc;
   @end
   

2. 创建一个名为的View XIB Test1View

3. 添加TabBarViewController到XIB

4. 将XIB中的文件所有者设置为Test1ViewController.

5. 将tbc文件所有者中的IBOutlet 连接到XIB中的选项卡栏控制器.

6. 将view文件所有者中的IBOutlet 连接到XIB中的视图.

7. 在您的SplashViewController.h中添加属性

   Test1ViewController *tabBarViewController;
   

8. 合成tabBarViewController你的SplashViewController.m.

9. 使用以下内容替换方法中的TabBarController创建代码:loadViewSplashViewController

   tabBarViewController = [[Test1ViewController alloc] initWithNibName:
           @"Test1View" bundle:[NSBundle mainBundle]];
   tabBarViewController.view.alpha = 0.0;
   [self.view addSubview:[tabBarViewController view]];
   

10. 这是我失踪的一点.在Test1ViewController.m,您需要将以下行添加到该viewDidLoad方法:

    self.view = tbc.view;
    

11. 最后,我还必须更改finishedFading方法,SplashViewController.m在tabBarViewController视图上将alpha设置为1.0 .

    -(void) finishedFading
    {
        [UIView beginAnimations:nil context:nil];
        [UIView setAnimationDuration:0.75];
        self.view.alpha = 1.0;
        tabBarViewController.view.alpha = 1.0;
        [UIView commitAnimations];
        [splashImageView removeFromSuperview];
    }
    

我希望这有帮助.

Answer 2

我终于找到了有效的方法.代替:

tabBarController.view.frame = [[UIScreen mainScreen] applicationFrame];

要么

tabBarController.view.bounds = [[self view] bounds];

因为我无法找到此大小的自动或命名设置,所以我必须创建自己的矩形,该大小是屏幕大小减去statusBar.

 tabBarController.view.frame = CGRectMake(0,0,320,460);