How to use UIImage+SDAdditions - ios

Question

I am trying to use the above category for UIImage - Found Here
The reason for use is that I am having the user take a photo using the Camera/Picker. I then need to display the image selected in a UIImageView.
I would like to keep the orientation information of the image but scale it down slightly, for performance and best fit to the image view.
How do I implement to use this category? I am unsure how to make the call to the cat, do I call the method in some way?
At present, I have some delegate methods for the picker:
#pragma mark - UIImagePickerDelegate Methods
//delegate methode will be called after picking photo either from camera or library
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
[self dismissViewControllerAnimated:YES completion:nil];
UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
self.collectedImage = image;
NSLog(#"the collect image orientation is: %i",image.imageOrientation);

Answer 1

self.collectedImage = image;
NSLog(#"--------------------collected image information----------------------");
NSLog(#"the collected image orientation is: %i",image.imageOrientation);
NSLog(#"the image width is: %f",self.collectedImage.size.width);
NSLog(#"the image height is: %f",self.collectedImage.size.height);
// scale the image
UIImage *newCollectedImage = [self.collectedImage scaleWithMaxDimension:([[UIScreen mainScreen] bounds].size.height)];
self.collectedImage = newCollectedImage;
NSLog(#"--------------------collected NEW image information----------------------");
NSLog(#"the new collected image orientation is: %i",self.collectedImage.imageOrientation);
NSLog(#"the new image width is: %f",self.collectedImage.size.width);
NSLog(#"the new image height is: %f",self.collectedImage.size.height);