Android NetworkOnMainThreadException与AsyncTask
我需要从我的android应用程序执行一些HTTP请求。 我根据需要使用AsyncTask,网络部分位于doInBackground中 这是我的请求类:Android NetworkOnMainThreadException与AsyncTask,android,android-asynctask,httprequest,networkonmainthread,Android,Android Asynctask,Httprequest,Networkonmainthread,我需要从我的android应用程序执行一些HTTP请求。 我根据需要使用AsyncTask,网络部分位于doInBackground中 这是我的请求类: public class AsyncRequest extends AsyncTask<Void, Integer, HttpResponse>{ private ProgressDialog dialog; private Activity activity; private HttpUr
public class AsyncRequest extends AsyncTask<Void, Integer, HttpResponse>{
private ProgressDialog dialog;
private Activity activity;
private HttpUriRequest query;
private HttpClient client;
private HttpResponse response;
private String dialogMsg;
private String uri;
public String getUri() {
return uri;
}
public void setUri(String uri) {
this.uri = uri;
}
public AsyncRequest(Activity a, HttpUriRequest q, HttpClient c, String m) {
query = q;
client = c;
activity = a;
dialog = new ProgressDialog(a);
dialogMsg = m;
}
@Override
protected void onPostExecute(HttpResponse res) {
if (dialog.isShowing())
dialog.dismiss();
}
protected void onPreExecute() {
this.dialog.setMessage(dialogMsg);
this.dialog.show();
}
@Override
protected HttpResponse doInBackground(Void... arg0) {
try {
response = client.execute(query);
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return response;
}
protected HttpResponse getResponse() {
return response;
}
}
所以,我是一个android初学者,但我想当在主线程中执行与网络相关的代码时,会发现这个异常。但是我在doInBackground()方法中运行client.execute()。是调用execute().get()(在ui线程中)导致了问题吗 你有这个吗
response = request.execute().get(3, TimeUnit.SECONDS);
调用get()
使AsyncTask
不再异步。它会阻止等待响应的ui线程。这将导致NetworkOnMainThreadException
去掉Get(3,TimeUnit.SECONDS)代码>
只需使用request.execute()
。您可以在onPostExecute
中更新ui。您还可以将接口用作对活动的回调
在下面的链接中用黑带检查答案
重新格式化代码并发布日志,这就是问题所在。谢谢
response = request.execute().get(3, TimeUnit.SECONDS);