I need to save multiple images in the photo library, the user can multiple selects the images from the app gallery then can save them in iPhone Photo Gallery. I am showing the UIActivityViewController for the purpose.
Suppose a user selects 10 or more images and choose to save them into photo library then only 7-8 images are saved.
Is there any way by which i can save array of images in the photo library without any failure ?
Thanks
let images = Generic.fetchImagesFromMediaFiles(self.selectedMediaObj) // to fetch selected images let activityViewController = UIActivityViewController(activityItems: images, applicationActivities: nil) self.present(activityViewController, animated: true, completion: nil); if let popoverPresentationController = activityViewController.popoverPresentationController { popoverPresentationController.sourceView = self.shareAllView } 2 Answers
Answers 1
iOS system write photo save to album use single thread, one by one to do. if you want to save more photos same time, it maybe loss some data.
-(void)saveBtn { [SSGOTools againRequestPhotoWithblock:^(BOOL isAgree) { if (isAgree) { self.listOfImages = [NSMutableArray new]; int photoNum ; photoNum = (int)_photoArray.count; if (_photoArray.count > 9) { photoNum = 9; } for (int i = 0; i < photoNum; i++) { NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:_photoArray[i]]]; UIImage *myImage = [UIImage imageWithData:data]; //[self.listOfImages addObject:myImage]; [self loadImageFinished:myImage]; } } }]; } - (void)loadImageFinished:(UIImage *)image { [[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{ //write photo save to album [PHAssetChangeRequest creationRequestForAssetFromImage:image]; } completionHandler:^(BOOL success, NSError * _Nullable error) { NSLog(@"success = %d, error = %@", success, error); if(success){ dispatch_async(dispatch_get_main_queue(), ^{ [SSGOTools showInfoPopHint:@"Success"]; }); } }]; } Answers 2
you will need to use the completion block here for ensuring all images are saved.. try this :
-(void)saveBtn{ [SSGOTools againRequestPhotoWithblock:^(BOOL isAgree) { if (isAgree) { self.listOfImages = [NSMutableArray new]; int photoNum ; photoNum = (int)_photoArray.count; if (_photoArray.count > 9) { photoNum = 9; } for (int i = 0; i < photoNum; i++) { NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:_photoArray[i]]]; UIImage *myImage = [UIImage imageWithData:data]; [self.listOfImages addObject:myImage]; // [self loadImageFinished:myImage]; } [self saveAllImages:self.listOfImages]; } }]; } -(void)saveAllImages:(NSMutableArray *)images { UIImage *image = [images firstObject]; [images removeObject:image]; [self loadImageFinished:image :^(bool success) { if (success){ if (images.count > 0){ [self saveAllImages:images]; }else{ // all images saved do whatever you want; } }else{ NSLog(@"failed saving image"); } }]; } - (void)loadImageFinished:(UIImage *)image :(void(^)(bool success))completion{ [[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{ //write photo save to album [PHAssetChangeRequest creationRequestForAssetFromImage:image]; } completionHandler:^(BOOL success, NSError * _Nullable error) { NSLog(@"success = %d, error = %@", success, error); if(success){ dispatch_async(dispatch_get_main_queue(), ^{ [SSGOTools showInfoPopHint:@"Success"]; }); } completion(success); }]; } 
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