TabBarController rotation problem with popViewControllerAnimated and selectedIndex
- by rjobidon
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:
Create a demo Tab Bar Application.
Add the following code to the App Delegate .h file:
#import <UIKit/UIKit.h>
@interface TestRotation2AppDelegate : NSObject {
UIWindow *window;
UITabBarController *tabBarController;
}
@property (nonatomic, retain) IBOutlet UIWindow *window;
@property (nonatomic, retain) IBOutlet UITabBarController *tabBarController;
(void)doAction;
@end
// Redefine the interface to cach rotation messages
@interface UITabBarController (TestRotation1AppDelegate)
@end
Add the following code to the App Delegate .m file:
#import "TestRotation2AppDelegate.h"
@implementation TestRotation2AppDelegate
@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];
view1.title = @"Third";
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:view1];
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];
[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!
