如何在onPostExecute中调用映射方法？

public class MyTask extends AsyncTask<Void, Void, String> {

    @Override
    protected String doInBackground(Void... voids) {
        // 后台任务的执行逻辑
        return "Task completed";
    }

    @Override
    protected void onPostExecute(String result) {
        super.onPostExecute(result);
        
        // 调用映射方法进行处理
        try {
            Class<?> mappingClass = Class.forName("com.example.MappingClass");
            Method mappingMethod = mappingClass.getMethod("handleResult", String.class);
            Object mappingInstance = mappingClass.newInstance();
            mappingMethod.invoke(mappingInstance, result);
        } catch (ClassNotFoundException | NoSuchMethodException | IllegalAccessException | InstantiationException | InvocationTargetException e) {
            e.printStackTrace();
        }
    }
}