Set UIButton Frame at the center of UIImgeView - iphone

Question

Here is my code to set at the center
UIButton *videoImage = [[UIButton alloc]initWithFrame:CGRectMake((secondImageView.frame.size.width/2)-50,(secondImageView.frame.size.height/2)-50,50,50)];
videoImage.transform = CGAffineTransformMakeRotation(ang*(3.14/180));
[videoImage setBackgroundImage:[UIImage imageNamed:#"PlayButton.png"] forState:UIControlStateNormal];
[videoImage addTarget:self action:#selector(PlayMusicOnClickofButton:) forControlEvents:UIControlEventTouchUpInside];
[secondImageView addSubview:videoImage];
videoImage.tag = k+1000;
secondImageView.userInteractionEnabled = YES;
[videoImage release];
The problem that i am facing is when i change orientation of button it's position gets changed. It doesn't remain at center. Please help
Thanks

Answer 1

Actually you should use this method....
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
if(interfaceOrientation == UIInterfaceOrientationLandscapeLeft || interfaceOrientation == UIInterfaceOrientationLandscapeRight)
{
//handle how you want to show in landscape mode
}
else
{
//handle how you want to show in portrait mode
}
return YES;
}

Answer 2

You need to handle this. What you are doing is correct. You need to do tweak it when the orientation changes as the dimensions of your parent view change. Implement willAnimateRotationToInterfaceOrientation delegate. check this out -
- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation
duration:(NSTimeInterval)duration
{
if(toInterfaceOrientation == UIInterfaceOrientationLandscapeLeft||toInterfaceOrientation == UIInterfaceOrientationLandscapeRight)
{
//handle how you want to show in landscape mode
}
else
{
//handle how you want to show in portrait mode
}
}