使用UIViewAnimationTransitionFlip闪烁动画

我有一个包含两个子视图的containerview。我想从一个转到另一个。问题是出现了某种闪烁。它不会在iPhone 3GS上发生,但在模拟器和iPhone 3G上: http://www.hanspinckaers.com/upload/Flickering.png

有人知道为什么会这样吗?

这是代码:

[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration: 0.75];
[UIView setAnimationDidStopSelector:@selector(afterAnimationProceed)];
[UIView setAnimationDelegate:self];
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:self.containerView cache:YES];

if(self.mapViewController.view.superview){      
    [self.mapViewController.view removeFromSuperview];
    [self.containerView addSubview:self.tableController.view];
} else {
    [self.tableController.view removeFromSuperview];
    [self.containerView addSubview:self.mapViewController.view];
}


[UIView commitAnimations];

汉斯