android - 如何创建 AsyncTask 以消除 NetworkOnMainThreadException？

Question

可能重复：
android.os.NetworkOnMainThreadException

我的 android 应用程序在模拟器上运行，但在手机中显示android.os.NetworkOnMainThreadException。从搜索中我知道可以使用AsyncTask. 任何机构都可以帮助我创建一个AsyncTask在按钮单击时调用 httppost 并返回响应onCreate吗？

Answer 1

我做到了，这是代码

private class DownloadWebPageTask extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... urls) {
  String response = "";
  for (String url : urls) {
    DefaultHttpClient client = new DefaultHttpClient();
    HttpGet httpGet = new HttpGet(url);
    try {
      HttpResponse execute = client.execute(httpGet);
      InputStream content = execute.getEntity().getContent();

      BufferedReader buffer = new BufferedReader(new InputStreamReader(content));
      String s = "";
      while ((s = buffer.readLine()) != null) {
        response += s;
      }

    } catch (Exception e) {
      e.printStackTrace();
    }
  }
  return response;
}

@Override
protected void onPostExecute(String result) {
  textView.setText(result);
}

}