Autorotation lock, programmatically

Question

Does anybody know if there is a possibility to lock autorotation of iPhone programmatically for just one view? I want to make some kind of help with semi-transculent view, but I want to support only landscape orientation even all other views can rotate. So I wish to lock rotation when this view is on the top.

tnx

EDIT: More details: one UIController has 7 UIView...and I wish to lock the autorotation just when the last one occurs on the top.

Answer 1

This question was asked over a year ago but the accepted method is now deprecated in iOS 6 so if anybody is interested in doing this in iOS 6 then you need to use supportedInterfaceOrientations on the topmost controller.

Imagine you have a setup like this...

• Tab Bar Controller
  • Navigation Controller
    • View Controller

... then you need to set the supportedInterfaceOrientations method on the tab bar controller.

Create a subclass of the tab bar controller (or navigation controller if that is at the top) and set these methods in it...

- (BOOL)shouldAutorotate {
    //Use this if your root controller is a navigation controller
    return self.visibleViewController.shouldAutorotate;
    //Use this if your root controller is a tab bar controller
    return self.selectedViewController.shouldAutorotate;
}

- (NSUInteger)supportedInterfaceOrientations {
    //Navigation Controller
    return self.visibleViewController.supportedInterfaceOrientations;
    //Tab Bar Controller
    return self.selectedViewController.supportedInterfaceOrientations;
}

... then in your individual view controllers you can set the properties you want...

- (BOOL)shouldAutorotate {
    return YES;
}

- (NSUInteger)supportedInterfaceOrientations{
    //return supported orientation masks
    return UIInterfaceOrientationMaskLandscape;
}

Answer 2

Use the following...

-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    return (interfaceOrientation == UIInterfaceOrientationLandscapeLeft) || (interfaceOrientation == UIInterfaceOrientationLandscapeRight);
}

Answer 3

You can attach it to the window. After the view is loaded, do

[self.view.window addSubview:yourStaticView];
[self.view.window bringSubviewToFront:yourStaticView]; // Do only if necessary

Remove it when leaving this view. Probably in viewWillDisappear: or viewDidDisappear:.