Extract Images in PDF ​

// Init Methods
- (instancetype)initWithDocument:(CPDFDocument *)document {
  CPDFDocument *myDocument = document;
  [self imageExtract:myDocument];
}

// Extract images
- (void)imageExtract:(CPDFDocument *)document {
  NSString *commandLineStr = @"";
  NSMutableArray *imageFilePaths = [NSMutableArray array];
  NSMutableArray *imageNames = [NSMutableArray array];
  
    commandLineStr = [commandLineStr stringByAppendingString:@"-------------------------------------\n"];
    commandLineStr = [commandLineStr stringByAppendingString:@"Samples 1: Extract all images in the documentn"];
    commandLineStr = [commandLineStr stringByAppendingString:@"Opening the Samples PDF File\n"];
    
    // Get Sandbox path for saving the PDFFile
    NSString *path = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
    NSString *writeDirectoryPath = [NSString stringWithFormat:@"%@/%@", path, @"ImageExtract"];
    
    if (![[NSFileManager defaultManager] fileExistsAtPath:writeDirectoryPath])
        [[NSFileManager defaultManager] createDirectoryAtURL:[NSURL fileURLWithPath:writeDirectoryPath] withIntermediateDirectories:YES attributes:nil error:nil];
    
    // Extract all images from document
    NSIndexSet *pages = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(0, document.pageCount)];
    
    [document extractImageFromPages:pages toPath:writeDirectoryPath];
    NSArray *fileArray = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:writeDirectoryPath error:nil];
    for (NSString *fileName in fileArray) {
        NSString *filePath = [writeDirectoryPath stringByAppendingPathComponent:fileName];
        commandLineStr = [commandLineStr stringByAppendingFormat:@"%@\n", fileName];
        [imageFilePaths addObject:filePath];
        [imageNames addObject:fileName];
    }
}