无法获取我刚刚在 google 驱动器上创建的文件夹 ID

cannot get folderId that i just created on google drive

public class Helpers  extends Activity implements
    GoogleApiClient.ConnectionCallbacks,
    GoogleApiClient.OnConnectionFailedListener {
SharedPreferences preferences;

private static final String TAG = "BaseDriveActivity";

public static  String EXISTING_FOLDER_ID;


protected static final int REQUEST_CODE_RESOLUTION = 1;

protected static final int NEXT_AVAILABLE_REQUEST_CODE = 2;

public static final String folderId = "FOLDER_ID";
public static final String fileName = "folderId";

private GoogleApiClient mGoogleApiClient;


@Override
protected void onResume() {
    super.onResume();
    if (mGoogleApiClient == null) {
        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addApi(Drive.API)
                .addScope(Drive.SCOPE_FILE)
                .addScope(Drive.SCOPE_APPFOLDER) // required for App Folder sample
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .build();
    }
    mGoogleApiClient.connect();
}

@Override
protected void onActivityResult(int requestCode, int resultCode,
                                Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == REQUEST_CODE_RESOLUTION && resultCode == RESULT_OK) {
        mGoogleApiClient.connect();
    }
}

@Override
protected void onPause() {
    if (mGoogleApiClient != null) {
        mGoogleApiClient.disconnect();
    }
    super.onPause();
}

final ResultCallback<DriveFolder.DriveFolderResult> callback = new ResultCallback<DriveFolder.DriveFolderResult>() {
    @Override
    public void onResult(DriveFolder.DriveFolderResult result) {
        if (!result.getStatus().isSuccess()) {
            showMessage("Error while trying to create the folder");
            return;
        }

        EXISTING_FOLDER_ID = result.getDriveFolder().getDriveId().toString();
        showMessage("Created a folder: " + result.getDriveFolder().getDriveId().toString());

        preferences = getSharedPreferences(fileName , MODE_PRIVATE);
        SharedPreferences.Editor editor = preferences.edit();
        editor.putString(folderId , EXISTING_FOLDER_ID );
        editor.apply();
    }
};

public  void mcreateFolder() {

    MetadataChangeSet changeSet = new MetadataChangeSet.Builder()
            .setTitle("SmsSync").build();
    Drive.DriveApi.getRootFolder(getGoogleApiClient()).createFolder(
            getGoogleApiClient(), changeSet).setResultCallback(callback);

}

@Override
public void onConnected(Bundle bundle) {
    Log.i(TAG, "GoogleApiClient connected");
    preferences = getSharedPreferences(fileName , MODE_PRIVATE);
    EXISTING_FOLDER_ID = preferences.getString(folderId ,null);
    if (EXISTING_FOLDER_ID == null ) {
        mcreateFolder();

    }

}

@Override
public void onConnectionSuspended(int cause) {
    Log.i(TAG, "GoogleApiClient connection suspended");
}

@Override
public void onConnectionFailed(ConnectionResult result) {
    Log.i(TAG, "GoogleApiClient connection failed: " + result.toString());
    if (!result.hasResolution()) {
        // show the localized error dialog.
        GooglePlayServicesUtil.getErrorDialog(result.getErrorCode(), this, 0).show();
        return;
    }
    try {
        result.startResolutionForResult(this, REQUEST_CODE_RESOLUTION);
    } catch (IntentSender.SendIntentException e) {
        Log.e(TAG, "Exception while starting resolution activity", e);
    }
}

public void showMessage(String message) {
    Toast.makeText(this, message, Toast.LENGTH_LONG).show();
}

public GoogleApiClient getGoogleApiClient() {
    return mGoogleApiClient;
}}

我想在安装应用程序时创建一个文件夹,然后获取其 ID 并将其保存到 sharedprefrences..之后我想在该文件夹中创建一个文件,但是当我使用传递该文件夹 ID 在其中创建文件时比它说的 "Cannot find DriveId. Are you authorized to view this file?"

如果我使用 result.getDriveFolder().getDriveId().getResourceId() 获取 id 而不是它始终为 null。
我首先使用此代码创建我粘贴的文件夹 https://github.com/googledrive/android-demos/blob/master/src/com/google/android/gms/drive/sample/demo/CreateFolderActivity.java

并在我使用本指南的文件夹中创建文件 https://github.com/googledrive/android-demos/blob/master/src/com/google/android/gms/drive/sample/demo/CreateFileInFolderActivity.java
我正在传递我保存的 folderiD 并将其传递给创建文件函数。

不要将 DriveId 与 ResourceId 混用。两者看起来都像字符串,但 DriveId 与 ResourceId 不同。参见 SO 21800257. Also, ResourceId is not immediately available, see SO 22874657

DriveId 通常如下所示:

"DriveId:CAESHDBCMW1RVblahblahblahblahMYjAUgssy8yYFRTTNKRU55"

而 ResourceId 更像是:

"UW2ablahblaghblahNy00Ums0B1mQ"

更新:

由于有如此多的开发人员在解决这个问题,我将尽可能深入地阐述。

     Google Drive             Google Play Svcs      YourApp
   (up in the cloud)         (on your device)      (on your device)
  +--------------------+      +--------------+     +--------------+         
  | 'id' (RESTful API) | - - -> ResourceId  - - - -> ResourceId   |
  +--------------------+      |  DriveId    - - - -> DriveId      |
                              +--------------+     +--------------+

我想通过上面的艺术表达表达的是:

  • 当您在设备上创建驱动器对象 (folder/file) 时,GooPlaySvcs 将为您提供 DriveId
  • 你可以使用这个DriveId与GooPlaySvcs进行本地通信,你可以缓存它等等
  • 根据 Daniel 在 SO 21800257 中的评论(link 以上),不要依赖 DriveId 作为常量字符串, 据推测,它会根据提交的对象而改变。使用 DriveId.equals() (我没有测试)
  • 任何时候您离开本地设备(云端硬盘网络界面、其他应用程序、不同平台上的 YourApp) 设备),你需要使用 ResourceId,它是驱动器上唯一的唯一 ID(在云端 :-)。
  • 在 GooPlaySvcs 将对象提交到驱动器后,ResourceId 可供您使用。有 强制它的方法,但这是一个不同的故事(搜索 requestSync())。
  • 如果您决定获取 ResourceId 并将其用于 RESTfull 调用 (),请注意 Google Play 服务按您无法控制的时间表传播其更改这一事实 结束(看来,请再次查看 requestSync() 问题),您的 REST/GDAA 战斗可能会造成伤害 到你的数据。 GDAA(GooPlayServices) 可能暂时不知道您的 REST 更改。你有 自己管理同步。我承认我尝试时惨遭失败。

    祝你好运