我們可以使用Facebook SDK將文檔目錄視頻上傳到Facebook嗎

Question

我在使用Facebook SDK將視頻上傳到Facebook時遇到問題。我正在嘗試從SavedPhotos選擇的視頻可以正常工作。 但是，當我嘗試從我的文檔目錄上載視頻時，它說的是以下錯誤。 我所知道的是，我們可以上傳包含素材資源網址的視頻 。 還有其他方法可以將文檔目錄視頻上傳到Facebook嗎？？？

錯誤是

2015-05-26 16:30:02.369 graphtwentysixth[3025:1413799] FB: ERROR=Error Domain=com.facebook.sdk.share Code=2 "The operation couldn’t be completed. (com.facebook.sdk.share error 2.)" UserInfo=0x156b0f90 {com.facebook.sdk:FBSDKErrorArgumentValueKey=file:///private/var/mobile/Containers/Bundle/Application/48DA75B3-63BA-400A-AC92-BE6B4A2B954B/graphtwentysixth.app/demo-video-high-quality.mov, com.facebook.sdk:FBSDKErrorArgumentNameKey=videoURL, com.facebook.sdk:FBSDKErrorDeveloperMessageKey=Invalid value for videoURL: file:///private/var/mobile/Containers/Bundle/Application/48DA75B3-63BA-400A-AC92-BE6B4A2B954B/graphtwentysixth.app/demo-video-high-quality.mov}

碼

NSURL *videoURL = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"demo-video-high-quality" ofType:@"mov"]];

FBSDKShareVideo *video = [[FBSDKShareVideo alloc] init];
video.videoURL = videoURL;
FBSDKShareVideoContent *content1 = [[FBSDKShareVideoContent alloc] init];
content1.video = video;
[FBSDKShareAPI shareWithContent:content1 delegate:self];

謝謝您的寶貴時間

Answer 1

無法從文檔目錄上載視頻。 您可以通過將視頻作為資產來實現此目的，然后將資產的網址提供給Facebook，並在完成處理程序調用時將其從圖庫中刪除。 這是一個技巧，但不是一個好的解決方案，因為當您將視頻變成廚房資產時，它將在savePhotos中可見。

Answer 2

就像Shoaib所說的那樣，您需要首先將視頻變成資產。 確保在您的班級中包含#import <AssetsLibrary/AssetsLibrary.h> 。

    ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];

    ALAssetsLibraryWriteVideoCompletionBlock videoWriteCompletionBlock = ^(NSURL *newURL, NSError *error) {
        if (error)
        {
            NSLog( @"Error writing image with metadata to Photo Library: %@", error );
        }
        else
        {
            NSLog(@"Wrote image with metadata to Photo Library %@", newURL.absoluteString);

            FBSDKShareVideo* video = [FBSDKShareVideo videoWithVideoURL:newURL];

            FBSDKShareVideoContent* content = [[FBSDKShareVideoContent alloc] init];
            content.video = video;

            [FBSDKShareAPI shareWithContent:content delegate:self];
        }
    };

    NSURL *videoURL = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"demo-video-high-quality" ofType:@"mov"]];

    if ([library videoAtPathIsCompatibleWithSavedPhotosAlbum:videoURL])
    {
        [library writeVideoAtPathToSavedPhotosAlbum:videoURL completionBlock:videoWriteCompletionBlock];
    }

（編輯部分受此職位啟發）

Answer 3

您應該先將視頻保存到媒體庫，然后獲取正確的PHAsset並生成正確的URL：

guard let schemaUrl = URL(string: "fb://") else {
            return //be safe
}
if UIApplication.shared.canOpenURL(schemaUrl) {
    PHPhotoLibrary.requestAuthorization({ [weak self]
        (newStatus) in
        guard let strongSelf = self else {
            return
        }
        if newStatus ==  PHAuthorizationStatus.authorized {
            strongSelf.saveVideoToCameraRoll(url: assetURL, completion: { (result, phAsset) in
                phAsset?.getURL(completionHandler: { (url) in
                    if let url = url {
                        dispatchAsyncOnMainQueue {
                            let video = FBSDKShareVideo()
                            video.videoURL = url
                            let content = FBSDKShareVideoContent()
                            content.video = video
                            dialog.shareContent = content
                            dialog.show()
                        }
                    }
                })
            })                        
        } else {
            //unauthorized
        }
    })
} else {
    //facebookAppNotInstalled
}


...

func saveVideoToCameraRoll(url: URL, completion:@escaping (Bool, PHAsset?) -> ()) {
    PHPhotoLibrary.shared().performChanges({
        PHAssetChangeRequest.creationRequestForAssetFromVideo(atFileURL: url)
    }) { saved, error in
        if saved {
            let fetchOptions = PHFetchOptions()
            fetchOptions.sortDescriptors = [NSSortDescriptor(key: "creationDate", ascending: false)]
            fetchOptions.fetchLimit = 1
            let fetchResult = PHAsset.fetchAssets(with: .video, options: fetchOptions).firstObject
            completion(true, fetchResult)
        } else {
            completion(false, nil)
        }
    }
}

...

extension PHAsset {    
    func getURL(completionHandler : @escaping ((_ responseURL : URL?) -> Void)){
         if self.mediaType == .video {
            let options: PHVideoRequestOptions = PHVideoRequestOptions()
            options.version = .original
            let nameParts = self.localIdentifier.components(separatedBy: "/")
            if nameParts.count > 0 {
                let assetFormatString = "assets-library://asset/asset.MP4?id=%@&ext=MP4"

                let name = nameParts[0]
                let urlString = String(format: assetFormatString, name)
                if let url = URL(string: urlString) {
                    completionHandler(url)
                } else {
                    completionHandler(nil)                    
                }
            }

        }
    }
}

Answer 4

您只需嘗試以下代碼，可能會對您有所幫助。

- (void)upload{
    if (FBSession.activeSession.isOpen) {
        NSString *filePath = [[NSBundle mainBundle] pathForResource:@"demo-video-high-quality" ofType:@"mov"];
        NSURL *pathURL = [[NSURL alloc]initFileURLWithPath:filePath isDirectory:NO];
        NSData *videoData = [NSData dataWithContentsOfFile:filePath];

        NSDictionary *videoObject = @{
                                      @"title": @"FB SDK 3.1", 
                                      @"description": @"hello there !", 
                                      [pathURL absoluteString]: videoData
                                     };
        FBRequest *uploadRequest = [FBRequest requestWithGraphPath:@"me/videos"
                                                        parameters:videoObject
                                                        HTTPMethod:@"POST"];

        [uploadRequest startWithCompletionHandler:^(FBRequestConnection *connection, id result, NSError *error) {
            if (!error)
                NSLog(@"Done: %@", result);
            else
                NSLog(@"Error: %@", error.localizedDescription);
        }];
    }
}