GoogleAuthUtil.getToken()已弃用如何获取accessToken

从2019年8月开始，GoogleAuthUtil.getToken()已被弃用

步骤如下：

添加依赖

确保在app模块build.gradle文件中添加以下依赖项：

implementation 'com.google.api-client:google-api-client:1.31.5'
implementation 'com.google.oauth-client:google-oauth-client-jetty:1.31.5'
implementation 'com.google.apis:google-api-services-oauth2:v2-rev157-1.25.0'

获取凭据

将您的OAuth 2.0客户端ID（client_id）添加到项目中。要生成OAuth 2.0客户端ID，请按照以下步骤操作：

打开Google Cloud控制台（https://console.cloud.google.com/）并登录。
创建一个新项目
导航到“API和服务”>“凭据”。
单击创建凭据并选择OAuth客户端ID。这会生成一个客户端ID和一个客户端密钥。

请求访问令牌

要使用GoogleAuthUtil.getToken()的替代方法获取访问令牌，请使用以下代码：

import android.content.Context;
import android.util.Log;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.store.FileDataStoreFactory;
import com.google.api.services.oauth2.Oauth2;
import com.google.api.services.oauth2.model.TokenResponse;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.Arrays;
import java.util.List;

public class MainActivity extends AppCompatActivity {
    private static final String CLIENT_SECRET_FILE = "/client_secret.json";
    private static final List<String> SCOPES = Arrays.asList("https://www.googleapis.com/auth/userinfo.profile");
    private static final String TOKENS_DIRECTORY_PATH = "tokens";
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    String accessToken = getAccessToken();
                    Log.i("MainActivity", "Access token: " + accessToken);
                } catch (Exception e) {
                    Log.e("MainActivity", "Failed to get access token", e);
                }
            }
        }).start();
    }

    private String getAccessToken() throws Exception {
        GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JacksonFactory.getDefaultInstance(), new InputStreamReader(getAssets().open(CLIENT_SECRET_FILE)));
        GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(new NetHttpTransport(), JacksonFactory.getDefaultInstance(), clientSecrets, SCOPES)
                .setDataStoreFactory(new FileDataStoreFactory(getFilesDir(), FileDataStoreFactory.getDefaultInstance().getDefaultDataStore(TOKENS_DIRECTORY_PATH)))
                .setAccessType("offline")
                .build();
        TokenResponse response = flow.newTokenRequest("YOUR_REFRESH_TOKEN").setRedirectUri("urn:ietf:wg:oauth:2.0:oob").execute();
        return response.getAccessToken();
    }
}

在这里，替换CLIENT_SECRET_FILE的值为你的客户端密钥文件名.json。此外，替换YOUR_REFRESH_TOKEN的值为从Google获取的刷新令牌。