在安卓activity中调用onActivityResult之前，如何等待onMapReady做完所有处理？

public class MyActivity extends Activity implements OnMapReadyCallback {
    private boolean isMapReady = false;

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

        // 初始化地图
        MapFragment mapFragment = (MapFragment) getFragmentManager().findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);
    }

    @Override
    public void onMapReady(GoogleMap googleMap) {
        // 地图准备就绪
        isMapReady = true;
        // 进行其他地图相关的处理
    }

    private void waitForMapReady() {
        while (!isMapReady) {
            try {
                Thread.sleep(100); // 暂停100毫秒
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    private void startNextActivity() {
        // 在调用startActivityForResult之前等待地图准备就绪
        waitForMapReady();

        // 调用startActivityForResult方法
        Intent intent = new Intent(this, NextActivity.class);
        startActivityForResult(intent, REQUEST_CODE);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        // 处理返回结果
    }
}