Question

这是一个非常重要的自动旋转问题，易于重现。

我的应用程序有一个UITabBarController。每个选项卡都是UINavigationController。正常调用shouldAutorotateToInterfaceOrientation和didRotateFromInterfaceOrientation处理自动旋转。

接口正常旋转，直到我调用UIViewController.popViewControllerAnimated并更改UITabBarController.selectedIndex。

重现的步骤：

创建演示标签栏应用程序。

将以下代码添加到App Delegate .h文件：

#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

将以下代码添加到App Delegate .m文件中：

#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

界面自动正常旋转，直到您点击标签＃3上的按钮。

非常感谢您的帮助！

Answer 1

iPhone SDK 3.2解决了这个问题。

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

popViewControllerAnimated和selectedIndex（iPhone SDK）的UITabBarController旋转问题

1 个答案: