My application has the view of a UITabBarController added to the window of my AppDelegate which displays the views of a couple of customised UIViewControllers. In every view controller I have:
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation{
return TRUE;
}
implemented so that the application rotates with the device.
On one of the view controllers I want to do some comparion between the touch coordinates produced by some customised subview objects and after rotation these are in a rotated coordinate space from the coordinates in the view controller.
So I asked a question previously about how best to achieve this and I was advised to make use of the viewController's view's transform to get the coordinates into the same rotation. Sounded good in principle but when I came to use it things didn't go to plan. So I tried to put in some NSLogs to find out why that might be.
In the view controller I placed:
- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation{
NSLog(@"VC Transform: %@", NSStringFromCGAffineOrientation(self.view.transform));
}
and I found that in every orientation the output is [1, 0, 0, 1, 0, 0] even though the screen is clearly rotating. Just to mention at no point am I trying to assign something to it within my code.
So I tried adding:
NSLog(@"AD Tansform: %@", NSStringFromCGAffineOrientation(mainDelegate.window.transform));
to see if there was anything more interesting was happeing there but found the same result. I also tried to add it to one of my other view controllers that isn't doing any work following a rotation and found the same thing.
Can anyone think of a reason why the view transform might not be changing?
