iOS iPAD - Change UIImageView's background on Orientation change

[kamy]

Hi experts,

When i change the orientation say from Portrait to Landscape mode, how do i change the background image of a UIImageView which is inside a view?

I have two images
Login-iPad-Portrait.png - 768 × 1004 and
Login-iPad-Landscape.png - 1024 × 748

So in IB, i set the background of the imageview to 'Login-iPad-Portrait.png'
And in the code, this is what i do

Code:
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 
{
	// Return YES for iPAD
	return YES;
}


- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
    [super willRotateToInterfaceOrientation:toInterfaceOrientation duration:duration];
    if(toInterfaceOrientation == UIInterfaceOrientationPortrait || toInterfaceOrientation == UIInterfaceOrientationPortraitUpsideDown)
	{
        backgroungImage.image = [UIImage imageNamed:@"Login-iPad- Portrait.png"];
		
    }
    else if(toInterfaceOrientation == UIInterfaceOrientationLandscapeRight || toInterfaceOrientation == UIInterfaceOrientationLandscapeLeft)
	{
       backgroungImage.image = [UIImage imageNamed:@"Login-iPad-Landscape.png"];
        }
}

But the 'willRotateToInterfaceOrientation' event is never triggered, even as i change the orientation. Thus the orientation specific image is not updated.

Any pointers to what am doin wrong?

Or is there any other way of doing this?

Thanks in Advance!

 

[djEsh]

Try this

You should use orientationChanged instead of willRotateToInterfaceOrientation:

- (void) orientationChangedid)object
{


UIDeviceOrientation toInterfaceOrientation = [[UIDevice currentDevice] orientation];

if(toInterfaceOrientation == UIInterfaceOrientationPortrait || toInterfaceOrientation == UIInterfaceOrientationPortraitUpsideDown)
{
UIImage *img = [UIImage imageNamed"IMG_portrait.jpg"];
[backgroundImage setImage:img];
NSLog(@"IMG_portrait");

}
else if(toInterfaceOrientation == UIInterfaceOrientationLandscapeRight || toInterfaceOrientation == UIInterfaceOrientationLandscapeLeft)
{
UIImage *img = [UIImage imageNamed"IMG_landscape.jpg"];
[backgroundImage setImage:img];
NSLog(@"IMG_landscape");
}

}

 

[kamy]

Thank you sire....that works.