Question

是否可以在asynctask中包含多个httpclient？在我的下面的代码..它检索用户的信息，然后将其显示为一个新的活动..但我也想在执行ProfileAsync时获得关注者的数量和用户的跟踪...我有单独的php文件检索用户信息以及关注者和关注者的数量..

class ProfileAsync extends AsyncTask<String, String, String>{

                private Dialog loadingDialog;

                @Override
                protected void onPreExecute() {
                    super.onPreExecute();
                    loadingDialog = ProgressDialog.show(HomePageActivity.this, "Please wait", "Loading...");
                }

                @Override
                protected String doInBackground(String... params) {
                    String json=null;
                    String json2=null;
                    byte[] data;
                    StringBuffer buffer = null;
                    InputStream is = null;



                    try{
                        List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
                        nameValuePairs.add(new BasicNameValuePair("Username", uname));

                        HttpClient httpClient = new DefaultHttpClient();
                        HttpPost httpPost = new HttpPost(PROFILE_URL);
                        httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

                        HttpResponse response = httpClient.execute(httpPost);

                        HttpEntity entity = response.getEntity();
                        json = EntityUtils.toString(entity);
                        Log.e("Profile JSON: ", json.toString());

                    } catch (ClientProtocolException e) {
                        e.printStackTrace();
                    } catch (UnsupportedEncodingException e) {
                        e.printStackTrace();
                    } catch (IOException e) {
                        e.printStackTrace();
                    } 
                    return json;
                }

                @Override
                protected void onPostExecute(String json){
                    super.onPostExecute(json);

                    loadingDialog.dismiss();

                    try
                    {
                    jsonobject = new JSONObject(json);
                    jsonarray = jsonobject.getJSONArray("user");
                    JSONObject jb= jsonarray.getJSONObject(0);
                    //Username = jb.getString("Username");
                    Password = jb.getString("Password");
                    Fullname = jb.getString("Fullname");
                    Email = jb.getString("Email");
                    Bio = jb.getString("Bio");
                    Location = jb.getString("Location");



                    fn.setText(Fullname);
                    em.setText(Email);
                    loc.setText(Location);
                    b.setText(Bio);

                    if(json!=null)
                    {
                        Intent i = new Intent(HomePageActivity.this,ProfileActivity.class);
                        i.putExtra(u.username(), u.getUsername());
                        i.putExtra("password",Password);
                        i.putExtra("fullname",Fullname);
                        i.putExtra("email", Email);
                        i.putExtra("bio", Bio);
                        i.putExtra("location", Location);
                        startActivity(i);
                        finish();
                    }



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



                }
            }//end of profileasynctask

Answer 1

是的，你可以发送多个网址作为参数，所有的网址都可以作为params数组，如params [0]，params [1]，你可以循环通过它发送多个请求，但我建议不要在单个AyncTask，因为它将花费大量时间并且如Android Developer指南中所述，AsyncTask应该用于需要工作线程的简短操作，您可以在这里阅读它 - https://developer.android.com/reference/android/os/AsyncTask.html

如果您想发送多个请求尝试使用着名的网络库（如改造）或者如果您想使用AsynTask，请为每个请求编写单独的任务。

异步任务（Android）中的多个操作

1 个答案: