Save and Load Image From NSDocumentDirectory

Save Image  

UIImage *image = [[UIImage alloc] initWithData:[[NSData alloc]initWithContentsOfURL:[NSURL URLWithString:@"your Image URL"]];
[Self saveImage:image withImageName:@"ImageName"];


-(void)saveImage:(UIImage*)image withImageName:(NSString*)imageName 
{ 
 NSData *imageData = UIImageJPEGRepresentation(image,1.0); //convert image into .jpeg format.
NSFileManager *fileManager = [NSFileManager defaultManager];//create instance of NSFileManager
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); //create an array and store result of our search for the documents directory in it

NSString *documentsDirectory = [paths objectAtIndex:0]; //create NSString object, that holds our exact path to the documents directory

NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.jpeg", imageName]]; //add our image to the path


[fileManager createFileAtPath:fullPath contents:imageData attributes:nil]; //finally save the path (image)
}

Load Image

[self.imageView setImage:[Self  loadImage:@"ImageName"]];

-(UIImage*)loadImage:(NSString*)imageName
{
    
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    
    NSString *documentsDirectory = [paths objectAtIndex:0];
    
    NSString *fullPath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.jpeg", imageName]];
    
    return [UIImage imageWithContentsOfFile:fullPath];
    
}