我需要从我的Android应用程序做一些HTTP请求。 我用的AsyncTask根据需要,在doInBackground网络部分。NetworkOnMainThreadException用的AsyncTask
这里是我的请求类:
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;
}
}
而且,在我的UI线程,我用这种方式:
AsyncRequest request;
HttpClient httpClient = new DefaultHttpClient();
HttpGet getQuery = new HttpGet("Here goes my url");
HttpResponse response = null;
String rt = "Null";
getQuery.setHeader("Authorization", getIntent().getExtras().getString("token"));
request = new AsyncRequest(this, getQuery, httpClient, "Loading events...");
try {
response = request.execute().get(3, TimeUnit.SECONDS);
} catch (Exception e) {
e.printStackTrace();
}
HttpEntity entity = response.getEntity();
try {
rt = EntityUtils.toString(entity);
} catch (Exception e) {
e.printStackTrace();
return ;
}
所以,我的机器人初学者,但我想这在主线程中执行与网络相关的代码时会捕获异常。但我在我的doInBackground()方法中运行client.execute()。它是执行()调用。获得()(在UI线程)引起该问题?
重新格式化您的代码检查答案,并张贴的logcat –