iOS - Rotating view reveals background.

Posted by Jack on Stack Overflow See other posts from Stack Overflow or by Jack
Published on 2010-06-16T14:46:38Z Indexed on 2010/06/16 21:22 UTC
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Hi,

I have created a view that I want to be able to rotate. The two views are: containerView and this has a .backgroundColor of red and BackgroundImage as a subview. Here is my code for rotating:

- (void) willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
  [self adjustViewsForOrientation:toInterfaceOrientation];
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
  return YES;
}

- (void) adjustViewsForOrientation:(UIInterfaceOrientation)orientation {
if (orientation == UIInterfaceOrientationLandscapeLeft || orientation == UIInterfaceOrientationLandscapeRight) {
    backgroundImage.image = [UIImage imageNamed:@"landscape.jpg"];
    backgroundImage.frame = CGRectMake(0, 0, 1024, 704);
    containerView.frame = CGRectMake(0, 0, 1024, 704);
    self.title = @"landscape";
  } else if (orientation == UIInterfaceOrientationPortrait || orientation == UIInterfaceOrientationPortraitUpsideDown) {
    backgroundImage.image = [UIImage imageNamed:@"portrait.jpg"];
    backgroundImage.frame = CGRectMake(0, 0, 768, 960);
    containerView.frame = CGRectMake(0, 0, 768, 960);
    self.title = @"portrait";
  }
}

The problem is that the image rotates, but the background color is shown whilst the view rotates. Is there a nice solution to this problem (I know that I could create the images to blend into a color and set the background to the same color, but this is not what I would like).

A Video of the problem can be seen here:http://tinypic.com/r/2quj24g/6

PS the images are from the OmniGroup GitHub repo and are just used for the demo.

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