我正在开发一个应用程序来上传,显示和下载G Drive中的文件.不幸的是,下载时我收到
com.google.api.client.http.HttpResponseException:401 Unauthorized.
请帮我解决这个问题.
我在这里指派
credential = GoogleAccountCredential.usingOAuth2(this,DriveScopes.DRIVE);
service=new Drive.Builder(AndroidHttp.newCompatibleTransport(),new GsonFactory(),credential).build();
我的代码是:
package com.example.googledrive;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.nio.channels.Channels;
import java.nio.channels.ReadableByteChannel;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import com.google.api.client.extensions.android.http.AndroidHttp;
import com.google.api.client.googleapis.extensions.android.gms.auth.GoogleAccountCredential;
import com.google.api.client.googleapis.extensions.android.gms.auth.UserRecoverableAuthIOException;
import com.google.api.client.http.FileContent;
import com.google.api.client.http.GenericUrl;
import com.google.api.client.http.HttpResponse;
import com.google.api.client.json.gson.GsonFactory;
import com.google.api.services.drive.Drive;
import com.google.api.services.drive.Drive.Children;
import com.google.api.services.drive.Drive.Files;
import com.google.api.services.drive.Drive.Files.Get;
import com.google.api.services.drive.DriveScopes;
import com.google.api.services.drive.model.ChildList;
import com.google.api.services.drive.model.ChildReference;
import com.google.api.services.drive.model.File;
import com.google.api.services.drive.model.FileList;
import android.net.Uri;
import android.os.Bundle;
import …