Função - Redimensionar UIImage

Função para redimensionar  imagens (UIImage).

1. +(UIImage*)imageWithImage:(UIImage*)image scaledToSize:(CGSize)newSize;
2. {
3.     UIGraphicsBeginImageContext(newSize);
4.     [image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];
5.     UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
6.     UIGraphicsEndImageContext();
8.     return newImage;
9. }