Question

我正试图从Android for app上传视频到Facebook。 as3 facebook api有以下上传视频的方法
facebookMobile.uploadVideo(method:String, callback:Function = null, params:* = null)
params:* (default = null) — An object containing the title, description, fileName (including extension), and video (FileReference or ByteArray)

我正在使用cameraUi录制视频，并且正在返回文件的位置。根据api我需要使用fileReferance或byteArray传递此文件，因为我已经拥有文件的位置，我不想要任何类型的浏览功能。我无法创建byteArray（以前从未使用过它）。我从Facebook收到353错误：you must select a video file。

Bellow是我尝试创建bytearray

    public function UICompleteHandler(event:MediaEvent):void
    {
        trace("Welcome back from the camera");

        var media:MediaPromise = event.data;
        trace("file info "+media.file.url  + " - " + media.relativePath + " - " + media.mediaType);
        filePath = media.file.url;

        trace("Object encoding is: " + inBytes.objectEncoding + "\n\n" + "order file: \n\n");
        readFileIntoByteArray(filePath, inBytes); 
        trace("length 1:   "+inBytes.length);
        trace("position 1: "+inBytes.position);
        inBytes.position = 0; // reset position to beginning 
        //inBytes.uncompress(CompressionAlgorithm.DEFLATE); 

        //trace("position 2:  "+inBytes.position);
        //inBytes.position = 0;    //reset position to beginning 
        trace (inBytes);

    }
    private function readFileIntoByteArray(fileName:String, data:ByteArray):void 
    { 
        var inFile:File = new File(fileName);
        trace ("file to byte array  "+  inFile.url);
        trace ("file name var : "+fileName);

        inStream.open(inFile , FileMode.READ);
        inStream.readBytes(data); 
        inStream.close();           
    }

和视频上传代码：

    public function handleUpload(ev:TouchEvent)
    {
        trace ("posting to facebook - FileName: "+  accessCamera.fileName + " - FilePath: " + accessCamera.filePath);
        var params:Object ={  
            title:'test upload on FB api',
            description:'test upload on FB api',
            fileName: accessCamera.fileName,
            video: accessCamera.inBytes
        }

        //trace ("params.video = "+params.video);

        FacebookMobile.uploadVideo('me/videos', onComplete, params);
    }

    private function onComplete( result:Object, fail:Object ):void {
        trace("facebook post onComplete called" );
        if (result)
        {
            //result.id is id of post that was just posted
            trace ("great");
        }
        else if (fail)
        {
            trace("post Failed");  
            trace('code: '+fail.error.code); 
            trace('message: '+fail.error.message);
            trace('type: '+fail.error.type); 
        }
    }

Answer 1

无需将其转换为ByteArray。 File是一个AIR-only类，旨在允许您直接访问文件系统（正如您已经在做的那样）。当File扩展FileReference时，您只需传递已有的File对象。

将mp4视频转换为bytearray as3

1 个答案: