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269

answers:

1

Hi!

This is a very important auto rotate issue and easy to reproduce.

My application has a UITabBarController. Each tab is a UINavigationController. Auto rotation is handled with normal calls to shouldAutorotateToInterfaceOrientation and didRotateFromInterfaceOrientation.

The interface rotates normally until I call UIViewController.popViewControllerAnimated and change UITabBarController.selectedIndex.

Steps to reproduce:

  1. Create a demo Tab Bar Application.
  2. Add the following code to the App Delegate .h file:
    #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. Add the following code to the App Delegate .m file:
    #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

The interface auto rotates normally until you tap the button on tab #3.

Your help will be geatly appreciated!

A: 

iPhone SDK 3.2 solves this issue.

With previous SDK use [self.selectedViewController popViewControllerAnimated:NO].

rjobidon