android - 从静态类调用AsyncTask

Question

我有一个静态类，需要调用另一个，第一个是静态的，并阻止我通过以下错误调用第二个：

No enclosing instance of type Studies is accessible. Must qualify the allocation with an enclosing instance of type Studies (e.g. x.new A() where x is 
 an instance of Studies).

AsyncTask类

    class DownloadFileAsync extends AsyncTask<String, String, String> {

        @Override
        protected void onPreExecute() {}

        @Override
        protected String doInBackground(String... aurl) {}
    }

静态类

     public static void startDownload(int id) {
         ERROR LINE--> new DownloadFileAsync().execute("SOME URL");
   }

谢谢！

Answer 1

您可以尝试new Studies().new DownloadFileAsync().execute("SOME URL");

但这不是完全面向对象的风格