如何通过GoogleApiClient使用课堂服务

implementation 'com.google.android.gms:play-services-classroom:19.0.0'

GoogleApiClient mGoogleApiClient = new GoogleApiClient.Builder(context)
        .addApi(Classroom.API)
        .addScope(Classroom.SCOPE_CLASSROOM_COURSES)
        .addConnectionCallbacks(connectionCallbacks)
        .addOnConnectionFailedListener(connectionFailedListener)
        .build();

mGoogleApiClient.connect();

GoogleApiClient.ConnectionCallbacks connectionCallbacks = new GoogleApiClient.ConnectionCallbacks() {
    @Override
    public void onConnected(@Nullable Bundle bundle) {
        // 连接成功，可以使用课堂服务的相关功能
    }

    @Override
    public void onConnectionSuspended(int i) {
        // 连接暂停
    }
};

GoogleApiClient.OnConnectionFailedListener connectionFailedListener = new GoogleApiClient.OnConnectionFailedListener() {
    @Override
    public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
        // 连接失败
    }
};