Download and replace file in directory - ios

Question

I am trying download a file from an URL, but the problem is when ever I open the downloaded file it opens the last file which I downloaded before! I mean if I download image1.png and open it , then try to download and replace image2.png,when I am going to open the last downloaded file, the file still image1.png !
Here is my code :
- (void)downloadDataFromMac {
[MBProgressHUD showHUDAddedTo:self.view animated:nil];
NSString *replace = [absulutePath stringByReplacingOccurrencesOfString:#" " withString:#"%20" options:NSLiteralSearch range:NSMakeRange(0, [absulutePath length])];
pathWithData = [NSString stringWithFormat:#"http://192.168.1.36:8888/?req=getimg&key=%#",replace];
NSURL *URL = [NSURL URLWithString:pathWithData];
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];
NSURLRequest *request = [NSURLRequest requestWithURL:URL];
NSProgress *progress;
NSURLSessionDownloadTask *downloadTask = [manager downloadTaskWithRequest:request progress:nil destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) {
NSURL *documentsDirectoryURL = [[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask]objectAtIndex:0];
return [documentsDirectoryURL URLByAppendingPathComponent:[response suggestedFilename]];
} completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {
NSLog(#"File downloaded to: %#", filePath);
//Hide HUD
[MBProgressHUD hideHUDForView:self.view animated:YES];
self.documentInteractionController = [UIDocumentInteractionController interactionControllerWithURL:filePath];
[self.documentInteractionController setDelegate:self];
[self.documentInteractionController presentPreviewAnimated:YES];
}];
[downloadTask resume];
}
any help ?,thanks.

Answer 1

Try this:
//Saving images
-(BOOL) saveImage:(UIImage *) image filePath:(NSString *) filePath
{
// Creating path
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);
NSString *fileFullPath = [[paths objectAtIndex:0] stringByAppendingPathComponent:filePath];
// Saving image.
BOOL success = [UIImageJPEGRepresentation(image, 1.0) writeToFile:fileFullPath atomically:YES];
if (!success) {
NSLog(LogPropertyError, #"Couldn't save image to disk %#",fileFullPath);
}
return success;
}