如何在android服务中使用环境回调？

// 服务类
public class MyService extends Service {
    private EnvironmentCallback callback;

    // 定义回调接口
    public interface EnvironmentCallback {
        void onEnvironmentChanged(String environment);
    }

    // 注册回调接口
    public void registerCallback(EnvironmentCallback callback) {
        this.callback = callback;
    }

    // 获取环境信息并回调
    private void getEnvironmentInfo() {
        String environment = "production"; // 获取环境信息的逻辑
        if (callback != null) {
            callback.onEnvironmentChanged(environment);
        }
    }

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        getEnvironmentInfo();
        return super.onStartCommand(intent, flags, startId);
    }
}

// 调用者
public class MainActivity extends AppCompatActivity implements MyService.EnvironmentCallback {
    private MyService myService;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // 启动服务
        Intent serviceIntent = new Intent(this, MyService.class);
        startService(serviceIntent);

        // 绑定服务
        bindService(serviceIntent, serviceConnection, Context.BIND_AUTO_CREATE);
    }

    private ServiceConnection serviceConnection = new ServiceConnection() {
        @Override
        public void onServiceConnected(ComponentName componentName, IBinder iBinder) {
            MyService.MyBinder binder = (MyService.MyBinder) iBinder;
            myService = binder.getService();
            myService.registerCallback(MainActivity.this);
        }

        @Override
        public void onServiceDisconnected(ComponentName componentName) {
            myService = null;
        }
    };

    // 实现回调接口的方法
    @Override
    public void onEnvironmentChanged(String environment) {
        // 处理接收到的环境信息
        Log.d("MainActivity", "Environment changed: " + environment);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        // 解绑服务
        unbindService(serviceConnection);
    }
}