Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS

Posted by Willie Oeschger
Willie Oeschger
3,776 Points

Ribbit App image Resize

Hi I am having trouble with my app were i am getting a error and I do not know why. Please could you help with my code?

- (UIImage *) resizeImage:(UIImage *)image toWidth:(float)width andHight:(float)height
{
    CGSize *newSize = CGSizeMake(width, height);
    CGRect *newRectangle = CGRectMake(0, 0, width, height);
    UIGraphicsBeginImageContext(newSize);
    [self.image drawInRect:newRectangle];
    UIImage *resizeImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    return resizeImage;

}
Willie Oeschger
Willie Oeschger
3,776 Points

The error i am getting is "Initializing 'CGRect *' (aka 'struct CGRect *') with an expression of incompatible type 'CGRect' (aka 'struct CGRect')"

2 Answers

Ryan Ackermann
Ryan Ackermann
2,831 Points

There is no reason to make pointers to new instances of a CGSize and CGRect. Just simply pass the creation code of the CGSize and CGRect directly in the call.

- (UIImage *) resizeImage:(UIImage *)image toWidth:(float)width andHight:(float)height
{
    UIGraphicsBeginImageContext(CGSizeMake(width, height));
    [image drawInRect:CGRectMake(0, 0, width, height)];
    UIImage *resizeImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    return resizeImage;
}

Hope that helps! :)

Willie Oeschger
Willie Oeschger
3,776 Points
Willie Oeschger
Willie Oeschger
3,776 Points

Thanks dude that worked great!!