使用驱动器api将sql数据库上传到谷歌驱动器

Question

我想在我的 Android 应用中将数据库文件上传到 Google 驱动器。

我可以很好地备份保存到 /sdcard/schoolbinder/backups/notes 的数据库文件

我从这个网站开始：https://github.com/googledrive/android-quickstart/blob/master/app/src/main/java/com/google/android/gms/drive/sample/quickstart/MainActivity.java

这在我的应用程序中可以正常工作，但它是图片而不是文件。关于如何上传文件的任何想法

Answer 1

您引用的演示已经有选择文件的示例。

/**
 * Create a new file and save it to Drive.
 */
private void saveFileToDrive() {
    // Start by creating a new contents, and setting a callback.
    Log.i(TAG, "Creating new contents.");
    final Bitmap image = mBitmapToSave;
    Drive.DriveApi.newDriveContents(mGoogleApiClient)
            .setResultCallback(new ResultCallback<DriveContentsResult>() {

        @Override
        public void onResult(DriveContentsResult result) {
            // If the operation was not successful, we cannot do anything
            // and must
            // fail.
            if (!result.getStatus().isSuccess()) {
                Log.i(TAG, "Failed to create new contents.");
                return;
            }
            // Otherwise, we can write our data to the new contents.
            Log.i(TAG, "New contents created.");
            // Get an output stream for the contents.
            OutputStream outputStream = result.getDriveContents().getOutputStream();
            // Write the bitmap data from it.
            ByteArrayOutputStream bitmapStream = new ByteArrayOutputStream();
            image.compress(Bitmap.CompressFormat.PNG, 100, bitmapStream);
            try {
                outputStream.write(bitmapStream.toByteArray());
            } catch (IOException e1) {
                Log.i(TAG, "Unable to write file contents.");
            }
            // Create the initial metadata - MIME type and title.
            // Note that the user will be able to change the title later.
            MetadataChangeSet metadataChangeSet = new MetadataChangeSet.Builder()
                    .setMimeType("image/jpeg").setTitle("Android Photo.png").build();
            // Create an intent for the file chooser, and start it.
            IntentSender intentSender = Drive.DriveApi
                    .newCreateFileActivityBuilder()
                    .setInitialMetadata(metadataChangeSet)
                    .setInitialDriveContents(result.getDriveContents())
                    .build(mGoogleApiClient);
            try {
                startIntentSenderForResult(
                        intentSender, REQUEST_CODE_CREATOR, null, 0, 0, 0);
            } catch (SendIntentException e) {
                Log.i(TAG, "Failed to launch file chooser.");
            }
        }
    });
}

这只是调用它的问题。该演示似乎正在调用相机应用程序并返回Image。尝试删除onConnected 方法中的if 条件，应调用saveFileToDrive 并显示文件选择器。