phphotolibrary

问题 PHPickerViewController allows access to copies of photo library assets as well as returning PHAssets in the results. To get PHAssets instead of file copies, I do: let photolibrary = PHPhotoLibrary.shared() var configuration = PHPickerConfiguration(photoLibrary: photolibrary) configuration.filter = .videos configuration.selectionLimit = 0 let picker = PHPickerViewController(configuration: configuration) picker.delegate = self self.present(picker, animated: true, completion: nil) And then, /

问题 I can't find a similar method to ALAssetsLibrary->writeImageDataToSavedPhotosAlbum in the new PHPhotoLibrary since ALAssetsLibrary deprecated in iOS 9 I can't save GIF probably I'm using this code [[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{ PHAssetChangeRequest *assetRequest = [PHAssetChangeRequest creationRequestForAssetFromImage:[UIImage imageWithData:gifdata]]; placeholder = [assetRequest placeholderForCreatedAsset]; photosAsset = [PHAsset fetchAssetsInAssetCollection:collection

问题 I'm trying to save an image with exif metadata using following code: +(void)saveImageWithMetaToCameraRoll:(UIImage*)image location:(CLLocation*)location album:(PHAssetCollection *)album exif:(NSDictionary *)metadata isOriginal:(BOOL)isOriginal isFavorite:(BOOL)isFavorite completionBlock:(PHAssetBoolBlock)completionBlock { NSMutableDictionary *meta = [metadata mutableCopy]; NSData *imageData = UIImageJPEGRepresentation(image, 1.0f); CGImageSourceRef source = CGImageSourceCreateWithData((_

问题 For testing, I was trying to recreate the system 'Requesting Access' popup experience. Update: Under iOS 11, after deleting the App, the system popup will be displayed again. (previous question) First time the App run (and the only time), the system popup showed, requesting access. After that, not even deleting the App and restarting the device will trigger that popup again. In other words, the device 'remembers' the user request and there's no way to reset it. Here's the code:

问题 What I am trying to do is to save videos to PHPhotoLibrary, and then remove them when upload to clients remote server in the application completes (basically, photo library serves as temporary storage to add additional layer of security in case anything at all fails (I already save my vides it in the applications directory). Problem: The problem is for that to work, everything has to work without input from the user. You can write video to photos library like this: func

问题 I am currently using AVCaptureStillImageOutput to get a full resolution picture. I am also able to get the exif metadata using the following code: [self.stillImageOutput captureStillImageAsynchronouslyFromConnection:videoConnection completionHandler: ^(CMSampleBufferRef imageSampleBuffer, NSError *error) { CFDictionaryRef metaDict = CMCopyDictionaryOfAttachments(NULL, imageSampleBuffer, kCMAttachmentMode_ShouldPropagate); CFMutableDictionaryRef mutableDict = CFDictionaryCreateMutableCopy(NULL

问题 With the new functionality in iOS 8, if you are using a camera in the app, it will ask for permission to access the camera and then when you try to retake the pic, it asks for permission to access photo library. Next time when I launch the app, I wish to check if the camera and photo library has access permissions to it. For camera, I check it by if ([AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo] == AVAuthorizationStatusDenied) { // do something } I am looking for

问题 I am new in IOS and i want to select multiple image from photo library using swift4 and get into array of images.Please help me to do this. 回答1: You can not use the multiple image in UIImagepickercontroller u have to use assetlibrary for it. You can use a custom image picker. I think ImagePicker is best for Swift 来源： https://stackoverflow.com/questions/49993560/select-multiple-image-from-photo-library-using-swift

问题 I used to save a photo to the camera roll using ALAssetLibrary's writeImageToSavedPhotosAlbum:metadata:completionBlock, but that is now deprecated in iOS 9.0, so I switched to PHPhotoLibrary's version which looks like [[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{ [PHAssetChangeRequest creationRequestForAssetFromImage:image]; }completionHandler:^(BOOL success, NSError *error) { if (success){ NSLog(@"Image Saved!"); } else { NSLog(@"Error: %@", error); } }]; This saves the image itself

问题 I have an app that displays GIFs from the internet and I am trying to add the ability to save a GIF to the camera roll. I am using the PHPhotoLibrary and I was trying to save it to the camera roll using the method I've seen in several SO questions such as this one: func saveToCameraRoll(imageUrl: String) { PHPhotoLibrary.shared().performChanges({ _ in let createRequest = PHAssetChangeRequest.creationRequestForAssetFromImage( atFileURL: URL(string: imageUrl)!) }) { success, error in guard