强制iphone界面马上旋转

在现在的ios sdk中，我们一般通过UIApplication的setStatusBarOrientation:来进行View的强制旋转（当然，还要配合- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation），但是，setStatusBarOrientation并不一定马上会执行shouldAutorotateToInterfaceOrientation进行界面旋转，这时，有个小技巧可以让界面马上旋转过来，那就是调用一下 UINavigationController的presentModalViewController:animated:

.........{

    //为了马上旋转过来

    UINavigationController* nav = [[GurgleAppDelegate getAppDelegate] navigationController];

    UIViewController *controller = [[UIViewController alloc] init];

    UINavigationController *parentController = [[UINavigationController alloc] initWithRootViewController:controller];

    [nav presentModalViewController:parentController animated:NO];

    [controller dismissModalViewControllerAnimated:NO];

    [parentController release];

    [controller release];



}



 // Override to allow orientations other than the default portrait orientation.

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {

    // Return YES for supported orientations.

    return viewOrientation == interfaceOrientation;

}