UITabBarController旋轉問題與popViewControllerAnimated和selectedIndex（iPhone SDK）

Question

這是一個非常重要的自動旋轉問題，並容易重現。

我的應用程序有一個的UITabBarController。每個選項卡是一個UINavigationController。自動旋轉與正常調用shouldAutorotateToInterfaceOrientation和didRotateFromInterfaceOrientation處理。

界面正常旋轉，直到我調用UIViewController.popViewControllerAnimated並更改UITabBarController.selectedIndex。

重現步驟：

1. 創建演示標籤欄的應用。
2. 下面的代碼添加到應用程序委託.h文件中：

   #import <UIKit/UIKit.h>
    
   @interface TestRotationAppDelegate : NSObject { 
       UIWindow *window; 
       UITabBarController *tabBarController; 
   }
    
   @property (nonatomic, retain) IBOutlet UIWindow *window; 
   @property (nonatomic, retain) IBOutlet UITabBarController *tabBarController;
    
   @end
    
   // Redefine the interface to cach rotation messages 
   @interface UITabBarController (TestRotation1AppDelegate)
    
   @end 
   

3. 下面的代碼添加到應用程序委託.m文件：

   #import "TestRotationAppDelegate.h"
    
   @implementation TestRotationAppDelegate 
   @synthesize window; 
   @synthesize tabBarController;
    
   -(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { 
       [window addSubview:tabBarController.view]; 
       [window makeKeyAndVisible]; 
       return YES; 
   }
    
   -(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { 
       return YES; 
   }
    
   -(void)dealloc { 
       [tabBarController release]; 
       [window release]; 
       [super dealloc]; 
   }
    
   @end
    
   @implementation UITabBarController (TestRotation1AppDelegate)
    
   -(void)viewDidLoad { 
       [super viewDidLoad]; 
       // Add a third tab and push a view 
       UIViewController *view1 = [[[UIViewController alloc] init] autorelease]; 
       view1.title = @"Third"; 
       UINavigationController *nav = [[[UINavigationController alloc] initWithRootViewController:view1] autorelease]; 
       NSMutableArray *array = [[NSMutableArray alloc] init]; 
       [array addObjectsFromArray:self.viewControllers]; 
       [array addObject:nav]; 
       self.viewControllers = array; 
       // Push view2 inside the third tab 
       UIViewController *view2 = [[[UIViewController alloc] init] autorelease]; 
       [nav pushViewController:view2 animated:YES]; 
       // Create a button to pop view2 
       UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect]; 
       button.frame = CGRectMake(50, 50, 220, 38); 
       [button setTitle:@"Pop this view" forState:UIControlStateNormal]; 
       [button addTarget:self action:@selector(doAction) forControlEvents:UIControlEventTouchUpInside]; 
       [view2.view addSubview:button]; 
   }
    
   -(void) doAction { 
       // ROTATION PROBLEM BEGINS HERE 
       // Remove one line of code and the problem doesn't occur. 
       [self.selectedViewController popViewControllerAnimated:YES]; 
       self.selectedIndex = 0; 
   }
    
   -(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { 
       return YES; 
   }
    
   @end 
   

接口自動正常，直到你點擊選項卡上的按鈕旋轉＃3。

你的幫助將geatly感激！

Answer 1

iPhone SDK 3.2解決了這個問題。

與以前的SDK使用[self.selectedViewController popViewControllerAnimated：NO]。