response = httpClient.execute（request）不断给出NetworkOnMainThreadException

Question

我一直在尝试将一个POST请求发送回发送回json响应的php。但是这一行代码一直给我带来问题，我似乎无法前进。我很沮丧。我查阅了无数其他使用相同线路的例子！但由于某种原因，它不会为我工作！ 这是我的doinBackgrounds的代码片段：

protected Void doInBackground(Void... voids) {
    HttpClient httpClient=new DefaultHttpClient();
    HttpGet request=new HttpGet();
    BufferedReader in=null;
    String data=null;
    HttpResponse response = null;
    try {
        URI website=new URI("login.php");
        request.setURI(website);
    } catch (URISyntaxException e) {
        e.printStackTrace();
    }

    HttpPost httpPost=new HttpPost("login.php");
    List<NameValuePair> nameValuePairs=new ArrayList<NameValuePair>(2);
    nameValuePairs.add(new BasicNameValuePair("name", name));
    nameValuePairs.add(new BasicNameValuePair("password", pwd));
    try {
        httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    try {
        response=httpClient.execute(request);
    } catch (IOException e) {
        e.printStackTrace();
    }
    try {
        in=new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
    } catch (IOException e) {
        e.printStackTrace();
    }
    try {
        String line=in.readLine();
        System.out.println(line);
    } catch (IOException e) {
        e.printStackTrace();
    }

    if (Utility.isNotNull(name) && Utility.isNotNull(pwd)) {
        RequestParams params = new RequestParams();
        if (Utility.validate(name, pwd)) {
            params.put("username", name);
            params.put("password", pwd);
            bloggedIn=true;
            onPostExecute();
        } else {
            loginActivity.InvalidToast();
        }
    } else {
        loginActivity.EmptyToast();
    }
    return null;
}

Answer 1

您自己致电doInBackground()。这不是您使用AsyncTask的方式。要执行AsyncTask，请创建一个实例并在其上调用execute()或executeOnExecutor()。这将导致doInBackground()在后​​台线程上运行。

您可以在the JavaDocs中详细了解AsyncTask。

（顺便说一句，将来，请将堆栈跟踪发布为从LogCat复制的文本，而不是截图）