Question

我刚刚在this链接

上设置了适用于Android的快速启动google drive sdk应用程序

我正在尝试上传图片，然后对它们进行OCR。 Android快速入门上的示例应用程序运行正常，但是当我尝试将OCR的布尔值设置为true时，我得到以下IOException：

07-29 03:33:01.172: D/OCR_SERVICE(22602): Error 2: 400 Bad Request
07-29 03:33:01.172: D/OCR_SERVICE(22602): {
07-29 03:33:01.172: D/OCR_SERVICE(22602):   "code": 400,
07-29 03:33:01.172: D/OCR_SERVICE(22602):   "errors": [
07-29 03:33:01.172: D/OCR_SERVICE(22602):     {
07-29 03:33:01.172: D/OCR_SERVICE(22602):       "domain": "global",
07-29 03:33:01.172: D/OCR_SERVICE(22602):       "message": "Bad Request",
07-29 03:33:01.172: D/OCR_SERVICE(22602):       "reason": "badRequest"
07-29 03:33:01.172: D/OCR_SERVICE(22602):     }
07-29 03:33:01.172: D/OCR_SERVICE(22602):   ],
07-29 03:33:01.172: D/OCR_SERVICE(22602):   "message": "Bad Request"
07-29 03:33:01.172: D/OCR_SERVICE(22602): }

有趣的是我能够做OCR大约2次，然后我可能已经修改了源或其他东西，现在它不起作用。但我记得我从快速启动应用程序中做出的唯一更改是将此行更改为File file = service.files().insert(body, mediaContent).execute();以下内容：

File file = service.files().insert(body, mediaContent).setOcr(true).execute();

这是我的代码：

public class MainActivity extends Activity {
  static final int REQUEST_ACCOUNT_PICKER = 1;
  static final int REQUEST_AUTHORIZATION = 2;
  static final int CAPTURE_IMAGE = 3;

  private static Uri fileUri;
  private static Drive service;
  private GoogleAccountCredential credential;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    credential = GoogleAccountCredential.usingOAuth2(this, DriveScopes.DRIVE);
    startActivityForResult(credential.newChooseAccountIntent(), REQUEST_ACCOUNT_PICKER);
  }

  @Override
  protected void onActivityResult(final int requestCode, final int resultCode, final Intent data) {
    switch (requestCode) {
    case REQUEST_ACCOUNT_PICKER:
      if (resultCode == RESULT_OK && data != null && data.getExtras() != null) {
        String accountName = data.getStringExtra(AccountManager.KEY_ACCOUNT_NAME);
        if (accountName != null) {
          credential.setSelectedAccountName(accountName);
          service = getDriveService(credential);
          startCameraIntent();
        }
      }
      break;
    case REQUEST_AUTHORIZATION:
      if (resultCode == Activity.RESULT_OK) {
        saveFileToDrive();
      } else {
        startActivityForResult(credential.newChooseAccountIntent(), REQUEST_ACCOUNT_PICKER);
      }
      break;
    case CAPTURE_IMAGE:
      if (resultCode == Activity.RESULT_OK) {
        saveFileToDrive();
      }
    }
  }

  private void startCameraIntent() {
    String mediaStorageDir = Environment.getExternalStoragePublicDirectory(
        Environment.DIRECTORY_PICTURES).getPath();
    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US).format(new Date());
    fileUri = Uri.fromFile(new java.io.File(mediaStorageDir + java.io.File.separator + "IMG_"
        + timeStamp + ".jpg"));

    Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
    startActivityForResult(cameraIntent, CAPTURE_IMAGE);
  }

  private void saveFileToDrive() {
    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).setOcr(true).execute();
          if (file != null) {
            showToast("Photo uploaded: " + file.getTitle());
            startCameraIntent();
          }
        } catch (UserRecoverableAuthIOException e) {
            Log.d("OCR_SERVICE", "Error 1: " + e.getMessage());
          startActivityForResult(e.getIntent(), REQUEST_AUTHORIZATION);
        } catch (IOException e) {
            Log.d("OCR_SERVICE", "Error 2: " + e.getMessage());
          e.printStackTrace();
        }
      }
    });
    t.start();
  }

  private Drive getDriveService(GoogleAccountCredential credential) {
    return new Drive.Builder(AndroidHttp.newCompatibleTransport(), new GsonFactory(), credential)
        .build();
  }

  public void showToast(final String toast) {
    runOnUiThread(new Runnable() {
      @Override
      public void run() {
        Toast.makeText(getApplicationContext(), toast, Toast.LENGTH_SHORT).show();
      }
    });
  }
}

Answer 1

我刚从文档工作中完成了此Google Drive Quickstart示例。代码已过时，甚至一开始都没有编译。一旦成功，我在设备上运行应用程序时遇到了一些其他问题。

我已经列出了使其工作并致力于以下github项目所需的更改。这是一个Eclipse ADT项目，所以请随时查看并与您的代码进行比较。我已经测试了启用OCR选项并验证了结果。

https://github.com/hanscappelle/more-android-examples/tree/master/DriveQuickstart

自述文件概述了所有必需的更改。

适用于OCR的Google Drive SDK

1 个答案: