我应该在长时间运行的AsyncTask中使用getApplicationContext或Activity.this

class MyActivity extends Activity {
    private static MyApplication sApplication;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // ...

        MyAsyncTask task = new MyAsyncTask();
        task.execute();
    }

    private class MyAsyncTask extends AsyncTask<Void, Void, Void> {
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            // ...
        }

        @Override
        protected void onPostExecute(Void result) {
            super.onPostExecute(result);
            // ...

            if (sApplication != null) {
                // Access the application object here
            }
        }
    }
}