很长一段时间以来，我一直在解决这个问题。我想将我的 sqlite 数据库上传到 Google 驱动器，然后也下载它。问题是我发现 here 的 Drive Demo 不起作用。我需要获取 DriveId 但我不知道如何获取，因为示例应用程序不起作用。我想要 Create a file in a folder 。如果有任何工作教程，或者我可以逐步使用它，将不胜感激。我真的需要一些帮助才能让它发挥作用。
只是为了澄清，这就是我想要的:
谁能告诉我如何获取 DriveId 以便我可以让演示应用程序工作？如果这是不可能的，是否有任何分步教程可以帮助我实现上传/下载文件夹中的文件？如果您需要任何东西，请告诉我
这是 CreateFileInFolderActivity.class :
public class CreateFileInFolderActivity extends BaseDemoActivity {
private DriveId mFolderDriveId;
@Override
public void onConnected(Bundle connectionHint) {
super.onConnected(connectionHint);
Drive.DriveApi.fetchDriveId(getGoogleApiClient(), EXISTING_FOLDER_ID)
.setResultCallback(idCallback);
}
final private ResultCallback<DriveIdResult> idCallback = new ResultCallback<DriveIdResult>() {
@Override
public void onResult(DriveIdResult result) {
if (!result.getStatus().isSuccess()) {
showMessage("Cannot find DriveId. Are you authorized to view this file?");
return;
}
mFolderDriveId = result.getDriveId();
Drive.DriveApi.newContents(getGoogleApiClient())
.setResultCallback(contentsResult);
}
};
final private ResultCallback<ContentsResult> contentsResult = new
ResultCallback<ContentsResult>() {
@Override
public void onResult(ContentsResult result) {
if (!result.getStatus().isSuccess()) {
showMessage("Error while trying to create new file contents");
return;
}
DriveFolder folder = Drive.DriveApi.getFolder(getGoogleApiClient(), mFolderDriveId);
MetadataChangeSet changeSet = new MetadataChangeSet.Builder()
.setTitle("New file")
.setMimeType("text/plain")
.setStarred(true).build();
folder.createFile(getGoogleApiClient(), changeSet, result.getContents())
.setResultCallback(fileCallback);
}
};
final private ResultCallback<DriveFileResult> fileCallback = new
ResultCallback<DriveFileResult>() {
@Override
public void onResult(DriveFileResult result) {
if (!result.getStatus().isSuccess()) {
showMessage("Error while trying to create the file");
return;
}
showMessage("Created a file: " + result.getDriveFile().getDriveId());
}
};
}
这是
BaseDemoActivity.class :package com.google.android.gms.drive.sample.demo;
import android.app.Activity;
import android.content.Intent;
import android.content.IntentSender.SendIntentException;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.drive.Drive;
/**
* An abstract activity that handles authorization and connection to the Drive
* services.
*/
public abstract class BaseDemoActivity extends Activity implements
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener {
private static final String TAG = "BaseDriveActivity";
/**
* DriveId of an existing folder to be used as a parent folder in
* folder operations samples.
* Existing folder ID = CAESHDBCN2RKT1FUNnYzMWlkWE5VUzJKcVNuWXdVRGcYNiCGvM3xolE= and it
* does not work
*/
public static final String EXISTING_FOLDER_ID = "jqatpab1jsujpum14p7cq41pbtiij32q";
/**
* DriveId of an existing file to be used in file operation samples..
*/
public static final String EXISTING_FILE_ID = "0ByfSjdPVs9MZTHBmMVdSeWxaNTg";
/**
* Extra for account name.
*/
protected static final String EXTRA_ACCOUNT_NAME = "account_name";
/**
* Request code for auto Google Play Services error resolution.
*/
protected static final int REQUEST_CODE_RESOLUTION = 1;
/**
* Next available request code.
*/
protected static final int NEXT_AVAILABLE_REQUEST_CODE = 2;
/**
* Google API client.
*/
private GoogleApiClient mGoogleApiClient;
/**
* Called when activity gets visible. A connection to Drive services need to
* be initiated as soon as the activity is visible. Registers
* {@code ConnectionCallbacks} and {@code OnConnectionFailedListener} on the
* activities itself.
*/
@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();
}
/**
* Handles resolution callbacks.
*/
@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();
}
}
/**
* Called when activity gets invisible. Connection to Drive service needs to
* be disconnected as soon as an activity is invisible.
*/
@Override
protected void onPause() {
if (mGoogleApiClient != null) {
mGoogleApiClient.disconnect();
}
super.onPause();
}
/**
* Called when {@code mGoogleApiClient} is connected.
*/
@Override
public void onConnected(Bundle connectionHint) {
Log.i(TAG, "GoogleApiClient connected");
}
/**
* Called when {@code mGoogleApiClient} is disconnected.
*/
@Override
public void onConnectionSuspended(int cause) {
Log.i(TAG, "GoogleApiClient connection suspended");
}
/**
* Called when {@code mGoogleApiClient} is trying to connect but failed.
* Handle {@code result.getResolution()} if there is a resolution is
* available.
*/
@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 (SendIntentException e) {
Log.e(TAG, "Exception while starting resolution activity", e);
}
}
/**
* Shows a toast message.
*/
public void showMessage(String message) {
Toast.makeText(this, message, Toast.LENGTH_LONG).show();
}
/**
* Getter for the {@code GoogleApiClient}.
*/
public GoogleApiClient getGoogleApiClient() {
return mGoogleApiClient;
}
}
先感谢您。
最佳答案
我不确定如何使演示应用程序正常工作，但是您可以尝试在应用程序中创建自己的文件夹，然后使用该文件夹中的DriveId在其中创建文件。
在这些示例中，有一个示例 Activity 仅创建一个名为CreateFolderActivity的文件夹。在结果回调中，它返回一个DriveFolderResult，您可以使用以下方法查询DriveID
result.getDriveFolder.getDriveId();
然后在创建文件时使用该DriveId。