如何从Google account password manager android应用程序获取登录/密码？

dependencies {
    implementation 'com.google.android.gms:play-services-auth:19.2.0'
}

<uses-permission android:name="com.google.android.gms.permission.READ_GSERVICES" />

import com.google.android.gms.auth.api.credentials.Credential;
import com.google.android.gms.auth.api.credentials.Credentials;
import com.google.android.gms.auth.api.credentials.CredentialsClient;
import com.google.android.gms.auth.api.credentials.CredentialRequest;
import com.google.android.gms.auth.api.credentials.CredentialRequestResponse;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;

// ...

// 创建CredentialsClient实例
CredentialsClient credentialsClient = Credentials.getClient(this);

// 创建CredentialRequest实例
CredentialRequest credentialRequest = new CredentialRequest.Builder()
        .setPasswordLoginSupported(true)
        .build();

// 请求凭据
credentialsClient.request(credentialRequest)
        .addOnCompleteListener(new OnCompleteListener<CredentialRequestResponse>() {
            @Override
            public void onComplete(@NonNull Task<CredentialRequestResponse> task) {
                if (task.isSuccessful()) {
                    // 获取凭据响应
                    CredentialRequestResponse response = task.getResult();
                    if (response != null) {
                        // 获取凭据
                        Credential credential = response.getCredential();
                        if (credential != null) {
                            // 获取登录名和密码
                            String username = credential.getId();
                            String password = credential.getPassword();

                            // 在此处处理登录名和密码
                        }
                    }
                } else {
                    // 处理错误
                }
            }
        });