ios - 通过 iOS App 在 Twitter 上分享视频

Question

是否可以使用 SLRequest 分享视频？

我可以使用相同的方式分享图片

SLRequest *postRequest = [SLRequest requestForServiceType:SLServiceTypeTwitter requestMethod:SLRequestMethodPOST URL:requestURL parameters:message];

if (isImage)
{
    NSData *data = UIImagePNGRepresentation(imgSelected);
    [postRequest addMultipartData:data withName:@"media" type:@"image/png" filename:@"TestImage.png"];
}

postRequest.account = account;

[postRequest performRequestWithHandler:^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error)
{
    if (!error)
    {
        NSLog(@"Upload Sucess !");
    }
}];

Answer 1

我一直在通读 Twitter 视频上传 API 文档，它非常简单。您基本上需要向他们的 API 发出 3 个 POST 请求。您上传的视频也限制在 15 MB 以内。

Uploads using this endpoint require at least 3 calls, one to initialize the request, which returns the media_id, one or more calls to append/upload binary or base64 encoded data, and one last call to finalize the upload and make the media_id usable with other resources.

所以它是这样工作的:

• 请求 1:发送带有视频大小(以字节为单位)的初始请求。这将返回我们必须在请求 2 和 3 中使用的媒体 ID 号。

• 请求 2:使用请求 1 返回的媒体 ID 号上传视频数据。

• 请求 3:视频上传完成后，将“FINALIZE”请求发送回 Twitter API。这让 Twitter API 知道视频文件的所有 block 都已完成上传。

注意 Twitter API 接受“ block ”中的视频上传。因此，如果您的视频文件很大，您可能希望将其拆分为多个文件，因此您将不得不多次重复“Request 2”(不要忘记每次都增加“segment_index”数字)。

我在下面尝试编写代码。尝试一下并尝试一下。稍后我也会更新我的答案以改进它。

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { 

    // Assign the mediatype to a string 
    NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];

    // Check the media type string so we can determine if its a video
    if ([mediaType isEqualToString:@"public.movie"]) {

        NSURL *videoURL = [info objectForKey:UIImagePickerControllerMediaURL];
        NSData *webData = [NSData dataWithContentsOfURL:videoURL];

        // Get the size of the file in bytes.
        NSString *yourPath = [NSString stringWithFormat:@"%", videoURL];
        NSFileManager *man = [NSFileManager defaultManager];
        NSDictionary *attrs = [man attributesOfItemAtPath:yourPath error: NULL];
        UInt32 result = [attrs fileSize];

        //[self tweetVideoStage1:webData :result];
        [self tweetVideo:webData :result :1 :@"n/a"];
    }
}

-(void)tweetVideo:(NSData *)videoData :(int)videoSize :(int)mode :(NSString *)mediaID {

    NSURL *twitterVideo = [NSURL URLWithString:@"https://upload.twitter.com/1.1/media/upload.json"];

    // Set the parameters for the first twitter video request.
     NSDictionary *postDict;

    if (mode == 1) {

        postDict = @{@"command": @"INIT",
                     @"total_bytes" : videoSize,
                     @"media_type" : @"video/mp4"};
    }

    else if (mode == 2) {

        postDict = @{@"command": @"APPEND",
                     @"media_id" : mediaID,
                     @"segment_index" : @"0",
                     @"media" : videoData };
    }

    else if (mode == 3) {

        postDict = @{@"command": @"FINALIZE",
                     @"media_id" : mediaID };
    }

    SLRequest *postRequest = [SLRequest requestForServiceType:SLServiceTypeTwitter requestMethod:SLRequestMethodPOST URL:requestURL:twitterVideo parameters:postDict];

    // Set the account and begin the request.
    postRequest.account = account;
    [postRequest performRequestWithHandler:^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error) {

        if (!error) {

            if (mode == 1) {

                // Parse the returned data for the JSON string
                // which contains the media upload ID.
                NSMutableDictionary *returnedData = [NSJSONSerialization JSONObjectWithData:responseData options:NSJSONReadingMutableContainers error:&error]
                NSString *tweetID = [NSString stringWithFormat:@"%@", [returnedData valueForKey:@"media_id_string"]];
                [self tweetVideo:videoData :result :2 :tweetID];
            }

            else if (mode == 2) {
                [self tweetVideo:videoData :result :3 :mediaID];
            }
        }

        else {
            NSLog(@"Error stage %d - %", mode, error);
        }
    }];
}

更新 - Twitter API 错误 - https://dev.twitter.com/overview/api/response-codes

在回答您的第一条评论时，错误 503 表示 Twitter 服务器过载，现在无法处理您的请求。

503 Service Unavailable The Twitter servers are up, but overloaded with requests. Try again later.