如何在我的 Android 应用中显示上传到 Google Drive 的进度？

Question

i have the following code

which is supposed to upload an image from my android device to my google Drive.

  private void saveFileToDrive() {

      progressDialog = ProgressDialog.show(this, "", "Loading...");

    Thread t = new Thread(new Runnable() {
      @Override
      public void run() {
        try {
          // File's binary content
          java.io.File fileContent = new java.io.File(fileUri.getPath());
          FileContent mediaContent = new FileContent("image/jpeg", fileContent);

          // File's metadata.
          File body = new File();
          body.setTitle(fileContent.getName());
          body.setMimeType("image/jpeg");

          File file = service.files().insert(body, mediaContent).execute();
          if (file != null) {
            showToast("Photo uploaded: " + file.getTitle());

            progressDialog.dismiss();
            //startCameraIntent();
          }
        } catch (UserRecoverableAuthIOException e) {
          startActivityForResult(e.getIntent(), REQUEST_AUTHORIZATION);
        } catch (IOException e) {
          e.printStackTrace();
        }
      }
    });
    t.start();
  }

The thing is the upload never ends. That's weird as the image not too big

and I guess if I would have upload it via original Drive App, it would be done faster.

1) how can I show the upload progress?

2) how can I make a callback within the same Activity after the upload is done?

Answer 1

Downloading file from Google Drive:

1. You can either use an AsyncTask in which you can obtain an inputstream from the url and write a while loop for reading each line and showing the downloaded data on a dialog as below.

    @Override protected Boolean doInBackground(FilesObject... files) { // getting an input Stream. HttpResponse resp = service.getRequestFactory() .buildGetRequest(new GenericUrl(file.SourceImageUrl)).execute(); fileSize = resp.getHeaders().getContentLength(); if (fileSize != -1) { fileSizeReadableString = DiskSpaceUtil.readableFileSize(fileSize); } InputStream is = resp.getContent(); // publishing the progress in a dialog. int completed = 0; while ((length = inputStream.read(buffer)) > 0) { if (!this.isCancelled()) { completed += length; fOutputStream.write(buffer, 0, length); publishProgress(completed); } else { fOutputStream.flush(); fOutputStream.close(); inputStream.close(); return; } } @Override protected void onProgressUpdate(Integer... values) { sendShowloader("Downloading file ... \\n" + DiskSpaceUtil.readableFileSize(number) + " of " + fileSizeReadableString); } 

2. You can use the inherent Google Drive's Download Listeners which can be set with insert object.

Uploading File to Google Drive :

We can upload files to google drive using Google own implementation of MediaHttpUploaderProgressListener as below :

    { // ... Inside some thread

    java.io.File fil = new java.io.File(file.SourceImageUrl);
    InputStream is = new FileInputStream(fil);

    InputStreamContent mediaContent = new InputStreamContent(file.mimeType, is);
            mediaContent.setLength(fil.length());

    // File's metadata.
    File body = new File();
    body.setTitle(file.FileTitle);
    body.setMimeType(file.mimeType);
    body.setParents(parents);
    body.setDescription("Content Uploaded to "+ DriveName);
    // Inserting the Remote Resource into Google Drive
    File destFile = null;

    if(fil.length() > 5 * 1024 * 1024)
    {
        // Resumable Uploads when the file size exceeds a file size of 5 MB.
        // check link : 
        // 1) https://code.google.com/p/google-api-java-client/source/browse/drive-cmdline-sample/src/main/java/com/google/api/services/samples/drive/cmdline/DriveSample.java?repo=samples&r=08555cd2a27be66dc97505e15c60853f47d84b5a
        // 2) http://stackoverflow.com/questions/15970423/uploading-downloading-of-large-size-file-to-google-drive-giving-error

        Insert insert = mService.files().insert(body, mediaContent);
        MediaHttpUploader uploader = insert.getMediaHttpUploader();
        uploader.setDirectUploadEnabled(false);
        uploader.setProgressListener(new FileUploadProgressListener());
        destFile = insert.execute();

    }   
    else
    {
        // Else we go by Non Resumable Uploads, which is safe for small uploads.
        destFile = mService.files().insert(body, mediaContent).execute();
    }

    ... }

    // Now the implementation of FileUploadProgressListener which extends MediaHttpUploaderProgressListener

public static class FileUploadProgressListener implements MediaHttpUploaderProgressListener {

    public void progressChanged(MediaHttpUploader uploader) throws IOException {
      switch (uploader.getUploadState()) {
        case INITIATION_STARTED:
          postToDialog("Initiation Started");
          break;
        case INITIATION_COMPLETE:
          postToDialog("Initiation Completed");
          break;
        case MEDIA_IN_PROGRESS:
          // postToDialog("Upload in progress");
          postToDialog("Upload percentage: " + uploader.getProgress());
          break;
        case MEDIA_COMPLETE:
          postToDialog("Upload Completed!");
          break;

        case NOT_STARTED :
            postToDialog("Not Started!");
            break;
      }
    }
  }

Answer 2

只需先检查您的网络连接！！！