Java tutorial
/** * Copyright (C) 2013-2014 EaseMob Technologies. All rights reserved. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * http://www.apache.org/licenses/LICENSE-2.0 * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.wenwen.chatuidemo.activity; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.List; import org.apache.http.Header; import android.app.ProgressDialog; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.view.inputmethod.InputMethodManager; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ImageView; import android.widget.ListView; import com.google.gson.Gson; import com.google.gson.JsonArray; import com.google.gson.JsonElement; import com.google.gson.JsonParser; import com.loopj.android.http.AsyncHttpResponseHandler; import com.loopj.android.http.RequestParams; import com.wenwen.chatui.debug.DebugLog; import com.wenwen.chatuidemo.DemoApplication; import com.wenwen.chatuidemo.R; import com.wenwen.chatuidemo.adapter.ContactAdapter; import com.wenwen.chatuidemo.domain.MyUser; import com.wenwen.chatuidemo.utils.Constants; import com.wenwen.chatuidemo.utils.HttpClientRequest; import com.wenwen.chatuidemo.utils.Urls; /** * ? * */ public class ContactlistFragment extends Fragment { private final String TAG = "ContactlistFragment"; private ContactAdapter adapter; private List<MyUser> contactList; private ListView listView; private InputMethodManager inputMethodManager; private Gson gson = new Gson(); private ProgressDialog pd; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.fragment_contact_list, container, false); } @Override public void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); DebugLog.i(TAG, "onCreate"); } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); DebugLog.i(TAG, "onActivityCreated"); inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE); listView = (ListView) getView().findViewById(R.id.list); contactList = new ArrayList<MyUser>(); // ?contactlist getContactList(); // adapter listView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { startActivity(new Intent(getActivity(), ColleaguesInfo.class).putExtra("uid", contactList.get(position).getAccount_id())); } }); ImageView addContactView = (ImageView) getView().findViewById(R.id.iv_new_contact); // ? addContactView.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { //startActivity(new Intent(getActivity(), AddContactActivity.class)); startActivityForResult(new Intent(getActivity(), AddContactActivity.class), Constants.ActionCode.ACT_FIND); } }); } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { // TODO Auto-generated method stub super.onActivityResult(requestCode, resultCode, data); switch (requestCode) { // ? ? case Constants.ActionCode.ACT_FIND: if (data != null) { MyUser myUser = (MyUser) data.getExtras().get("myuser"); contactList.add(myUser); adapter.notifyDataSetChanged(); } break; } } /** * ?? */ private void getContactList() { try { RequestParams params = new RequestParams(); params.put("uid", DemoApplication.getInstance().getUserUid()); params.put("flag", "2"); params.put("pageindex", "1"); params.put("pagesize", "20"); pd = new ProgressDialog(getActivity()); pd.setMessage("?..."); HttpClientRequest.post(Urls.FRIENDSGET, params, 3000, new AsyncHttpResponseHandler() { @Override public void onStart() { // TODO Auto-generated method stub pd.show(); super.onStart(); } @Override public void onSuccess(int arg0, Header[] arg1, byte[] arg2) { // TODO Auto-generated method stub String res = new String(arg2); DebugLog.i(TAG, "??==" + res); JsonParser parser = new JsonParser(); JsonArray Jarray = parser.parse(res).getAsJsonArray(); MyUser myuser = null; for (JsonElement obj : Jarray) { myuser = gson.fromJson(obj, MyUser.class); if (!myuser.getAccount_name().equals("") && myuser.getAccount_name() != null) { contactList.add(myuser); } } // ? Collections.sort(contactList, new Comparator<MyUser>() { @Override public int compare(MyUser lhs, MyUser rhs) { return lhs.getAccount_username().compareTo(rhs.getAccount_username()); } }); adapter = new ContactAdapter(getActivity(), contactList); listView.setAdapter(adapter); } @Override public void onFinish() { // TODO Auto-generated method stub super.onFinish(); pd.dismiss(); } @Override public void onFailure(int arg0, Header[] arg1, byte[] arg2, Throwable arg3) { // TODO Auto-generated method stub } }); } catch (Exception e) { e.printStackTrace(); } } }