【问题标题】:How to create the file inside a folder in google drive?如何在谷歌驱动器的文件夹中创建文件?
【发布时间】:2017-07-06 08:12:45
【问题描述】:

我在文件夹中创建文件时遇到问题,我在谷歌驱动器中创建了单独的文件和单独的文件夹,但我无法在谷歌驱动器的文件夹中创建文件

我已经使用了在谷歌驱动器中的文件夹内创建文件的方法发布在下面

public void onClickFolderInRootFlder(View view)
{

    MetadataChangeSet changeSet = new MetadataChangeSet.Builder().setTitle("New CallLog folders").build();
    Drive.DriveApi.getRootFolder(mGoogleApiClient).createFolder(
            mGoogleApiClient, changeSet).setResultCallback(callback);
}

final ResultCallback<DriveFolder.DriveFolderResult> callback = new ResultCallback<DriveFolder.DriveFolderResult>() {
    @Override
    public void onResult(DriveFolder.DriveFolderResult result) {
        if (!result.getStatus().isSuccess()) {
            Toast.makeText(MainActivity.this,"Error while trying to create the folder",Toast.LENGTH_SHORT).show();
            return;
        }
        Toast.makeText(MainActivity.this,"Created a folder with content: " +
                result.getDriveFolder().getDriveId(),Toast.LENGTH_SHORT).show();
        Drive.DriveApi.fetchDriveId(mGoogleApiClient, String.valueOf(result.getDriveFolder().getDriveId()))
                .setResultCallback(idCallback);
    }
};

final private ResultCallback<DriveApi.DriveIdResult> idCallback = new ResultCallback<DriveApi.DriveIdResult>() {
    @Override
    public void onResult(DriveApi.DriveIdResult result) {
        if (!result.getStatus().isSuccess()) {
      //      showMessage("Cannot find DriveId. Are you authorized to view this file?");
            Toast.makeText(MainActivity.this,"Cannot find DriveId. Are you authorized to view this file?",Toast.LENGTH_SHORT).show();
            return;
        }
     DriveId   mFolderDriveId = result.getDriveId();
        Drive.DriveApi.newDriveContents(mGoogleApiClient)
                .setResultCallback(driveContentsCallback);
    }
};

final   ResultCallback<DriveApi.DriveContentsResult> driveContentsCallback =
        new ResultCallback<DriveApi.DriveContentsResult>() {
            @Override
            public void onResult(DriveApi.DriveContentsResult result) {
                if (!result.getStatus().isSuccess()) {
                    // display an error saying file can't be opened
                    return;
                }

                else{
                    CreateFileOnGoogleDrive(result);
                }
                // DriveContents object contains pointers
                // to the actual byte stream
                DriveContents contents = result.getDriveContents();
            }


        };


public void CreateFileOnGoogleDrive(DriveApi.DriveContentsResult result){

    final DriveContents driveContents = result.getDriveContents();

    // Perform I/O off the UI thread.
    new Thread() {
        @Override
        public void run() {
            // write content to DriveContents
            OutputStream outputStream = driveContents.getOutputStream();
            Writer writer = new OutputStreamWriter(outputStream);
            try {
                writer.write("Hello World");
                writer.close();

            } catch (IOException e) {
                Log.e(TAG, e.getMessage());
            }

            MetadataChangeSet changeSet = new MetadataChangeSet.Builder()
                    .setTitle("prabha")
                    .setMimeType("text/plain")
                    .setStarred(true).build();

            // create a file in root folder
            Drive.DriveApi.getRootFolder(mGoogleApiClient)
                    .createFile(mGoogleApiClient, changeSet, driveContents).setResultCallback(fileCallback);
        }
    }.start();
}
final private ResultCallback<DriveFolder.DriveFileResult> fileCallback = new
        ResultCallback<DriveFolder.DriveFileResult>() {
            @Override
            public void onResult(DriveFolder.DriveFileResult result) {
                if (!result.getStatus().isSuccess()) {
                    Toast.makeText(MainActivity.this,"Error while trying to create the file",Toast.LENGTH_SHORT).show();
                    return;
                }
                Toast.makeText(MainActivity.this,"Created a file with content: " +
                        result.getDriveFile().getDriveId(),Toast.LENGTH_SHORT).show();
            }
        };

我尝试了这种方法,但问题出现在行中

final private ResultCallback<DriveApi.DriveIdResult> idCallback = new ResultCallback<DriveApi.DriveIdResult>() {
    @Override
    public void onResult(DriveApi.DriveIdResult result) {
        if (!result.getStatus().isSuccess()) {
      //      showMessage("Cannot find DriveId. Are you authorized to view this file?");
            Toast.makeText(MainActivity.this,"Cannot find DriveId. Are you authorized to view this file?",Toast.LENGTH_SHORT).show();
            return;
        }
     DriveId   mFolderDriveId = result.getDriveId();
        Drive.DriveApi.newDriveContents(mGoogleApiClient)
                .setResultCallback(driveContentsCallback);
    }
};

result.getStatus.isSuccess 为 false 正在返回。请帮助我如何在 google drive 的文件夹中创建文件。

【问题讨论】:

    标签: android google-drive-api google-drive-android-api


    【解决方案1】:

    你在打电话

    Drive.DriveApi.getRootFolder(mGoogleApiClient).createFile
    

    它(不出所料)在根文件夹中创建一个文件。 相反,您应该调用

     DriveFolder.createFile 
    

    https://developers.google.com/android/reference/com/google/android/gms/drive/DriveFolder.html#createFile(com.google.android.gms.common.api.GoogleApiClient,com.google.android.gms.drive.MetadataChangeSet,com.google.android.gms.drive.DriveContents)所述

    【讨论】:

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