Upload() 请求不适用于 Google Drive API in windows phone 8 C#

Question

我为此创建了一个简单的页面。 "choose" button、"upload" button 和 displayImage 控件，用于在从 PhotoChooserTask 中选择后显示图像。下面是我的全部 class:

    PhotoChooserTask photoChooserTask;
    BitmapImage bmi;
    // Constructor
    public MainPage()
    {
        InitializeComponent();
    }

    private void chooseBtn_Click(object sender, RoutedEventArgs e)
    {
        photoChooserTask = new PhotoChooserTask();
        photoChooserTask.Completed += new EventHandler<PhotoResult>(photoChooserTask_Completed);
        photoChooserTask.Show();
    }

    private void photoChooserTask_Completed(object sender, PhotoResult e)
    {
        bmi = new BitmapImage();
        bmi.SetSource(e.ChosenPhoto);
        displayImage.Source = bmi;
    }

    private async void uploadBtn_Click(object sender, RoutedEventArgs e)
    {
        string[] scopes = new string[] { DriveService.Scope.Drive,
                             DriveService.Scope.DriveFile};
        ClientSecrets secrets = new ClientSecrets()
        {
            ClientId = "MY CLIENT ID",
            ClientSecret = "MY SECRET"
        };

        var credential = await GoogleWebAuthorizationBroker.AuthorizeAsync(secrets,
            scopes,
            "user",
            CancellationToken.None);

        var initializer = new BaseClientService.Initializer()
        {
            HttpClientInitializer = credential,
            ApplicationName = "Assignment 1",
        };
        //The authorization works!

        var service = new DriveService(initializer);

        Google.Apis.Drive.v2.Data.File body = new Google.Apis.Drive.v2.Data.File();
        body.Title = "My document";
        body.Description = "A test document";
        body.MimeType = "image/jpeg";


        byte[] byteArray = this.ConvertToBytes(bmi);
        System.IO.MemoryStream stream = new System.IO.MemoryStream(byteArray);

        FilesResource.InsertMediaUpload request = service.Files.Insert(body, stream, "image/jpeg");
        MessageBox.Show("The code reached here"); // The app shows this message. But can't move to the Upload() line.
        request.Upload();
        MessageBox.Show("Upload completed!");


    }


    //The codes below is copied from 
    public byte[] ConvertToBytes(BitmapImage bitmapImage)
    {
        using (MemoryStream ms = new MemoryStream())
        {
            WriteableBitmap btmMap = new WriteableBitmap
                (bitmapImage.PixelWidth, bitmapImage.PixelHeight);

            Extensions.SaveJpeg(btmMap, ms,
                bitmapImage.PixelWidth, bitmapImage.PixelHeight, 0, 100);

            return ms.ToArray();
        }
    }

授权后，在显示 MessageBox.Show("The code reached here"); 后没有任何错误，就像它完成了它的工作一样。但实际上图片还没有上传

Answer 1

我刚刚找到了一个非常简单的解决方案，但我花了大约一个月的时间才弄明白。

不是request.Upload();，而是request.UploadAsync();，因为我的方法使用异步。

和ConvertToBytes上面的方法是错误的，我上传的是黑色图片。但是我尝试了另一种方法，它获取一串路径作为参数（ReadImageFile("myimage.jpg"); 有效）

    public static byte[] ReadImageFile(string imageLocation)
    {
        byte[] imageData = null;
        FileInfo fileInfo = new FileInfo(imageLocation);
        long imageFileLength = fileInfo.Length;
        FileStream fs = new FileStream(imageLocation, FileMode.Open, FileAccess.Read);
        BinaryReader br = new BinaryReader(fs);
        imageData = br.ReadBytes((int)imageFileLength);
        return imageData;
    }

接下来我要做的是获取我的 BitmapImage 的路径以使用该方法，或者只是找到另一个有效的 byte[] 方法。

希望对大家有所帮助。

Upload() 请求不适用于 Google Drive API in windows phone 8 C#

Upload() request not working with Google Drive API in windows phone 8 C#

c#

windows-phone

google-drive-api