UIImageView不居中后旋转

Question

我手动添加一个UIImageView到我的UIView和居中它，这工作正常，但旋转设备后，UIImageView不居中了（它被移动到左下角）。我怎样才能解决这个问题？

logoView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"wi-fi-sticker.png"]]; 
logoView.center = self.view.center; 
[self.view addSubview:logoView]; 

问候， 萨沙

Answer 1

我能够使用这样的事情

-(void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration:{ 
     CGRect screen = [[UIScreen mainScreen] bounds]; 
     float pos_y, pos_x; 
     pos_y = UIDeviceOrientationIsLandscape(toInterfaceOrientation) ? screen.size.width/2 : screen.size.height/2; 
     pos_x = UIDeviceOrientationIsLandscape(toInterfaceOrientation) ? screen.size.height/2 : screen.size.width/2; 

     myImageView.center = CGPointMake(pos_x, pos_y); 
}