是的，有AsyncTask.get()

myDownloader.get(30000, TimeUnit.MILLISECONDS);

请注意，通过调用这个主线程（AKA。UI线程）将阻塞执行，你可能需要调用它在一个单独的线程。

Note that by calling this in main thread (AKA. UI thread) will block execution, You probably need call it in a separate thread.