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.easemob.chatuidemo.activity.homework; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.os.Handler; import android.os.Looper; import android.os.Message; import android.support.v4.widget.SwipeRefreshLayout; import android.support.v4.widget.SwipeRefreshLayout.OnRefreshListener; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.view.ViewGroup; import android.view.View.OnTouchListener; import android.view.WindowManager; import android.view.inputmethod.InputMethodManager; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ArrayAdapter; import android.widget.ListView; import android.widget.TextView; import android.widget.Toast; import com.baidu.mapapi.map.Text; import com.easemob.applib.controller.HXSDKHelper; import com.easemob.applib.utils.HXPreferenceUtils; import com.easemob.chat.EMChatManager; import com.easemob.chat.EMCursorResult; import com.easemob.chat.EMGroup; import com.easemob.chat.EMGroupInfo; import com.easemob.chat.EMGroupManager; import com.wenpy.jcc.R; import com.easemob.chatuidemo.activity.BaseActivity; import com.easemob.chatuidemo.activity.ChatActivity; import com.easemob.chatuidemo.activity.group.NewGroupActivity; import com.easemob.chatuidemo.activity.group.PublicGroupsActivity; import com.easemob.chatuidemo.activity.group.PublicGroupsSeachActivity; import com.easemob.chatuidemo.activity.main.MainActivity; import com.easemob.chatuidemo.adapter.GroupAdapter; import com.easemob.chatuidemo.adapter.HomeworkAdapter; import com.easemob.chatuidemo.adapter.MyGroupAdapter; import com.easemob.chatuidemo.domain.Info; import com.easemob.chatuidemo.utils.ConnServer; import com.easemob.chatuidemo.utils.DialogDemo; import com.easemob.exceptions.EaseMobException; import com.easemob.util.EMLog; public class HomeworkListTeacherActivity extends BaseActivity { public static final String TAG = "GroupsActivity"; private ListView HomeworkListView; private HomeworkAdapter mAdapter; private InputMethodManager inputMethodManager; public static HomeworkListTeacherActivity instance; private View progressBar; private SwipeRefreshLayout swipeRefreshLayout; private String cursor; private final int pagesize = 20; private boolean isLoading; public List<Map<String, Object>> mReturnData; private List<Info> infos = new ArrayList<Info>(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_homeworklist_teacher); instance = this; HomeworkListView = (ListView) findViewById(R.id.lv_homework_list); swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipe_layout); swipeRefreshLayout.setColorSchemeResources(android.R.color.holo_blue_bright, android.R.color.holo_green_light, android.R.color.holo_orange_light, android.R.color.holo_red_light); swipeRefreshLayout.setOnRefreshListener(new OnRefreshListener() { @Override public void onRefresh() { new GetDataThread(handler).start(); } }); mAdapter = new HomeworkAdapter(this, infos); HomeworkListView.setAdapter(mAdapter); HomeworkListView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { Intent intent = new Intent(HomeworkListTeacherActivity.this, HomeworkInfoContentActivity.class); Bundle extras = new Bundle(); extras.putString("id", mReturnData.get(position).get("id").toString()); extras.putString("nick", EMChatManager.getInstance().getCurrentUser()); intent.putExtras(extras); startActivity(intent); } }); DialogDemo.show(this, "??..."); new GetDataThread(handler).start(); } private class GetDataThread extends Thread { private Handler handler; public GetDataThread(Handler handler) { this.handler = handler; } @Override public void run() { String edit = "inform_get"; Map<String, String> params = new HashMap<String, String>(); params.put("method", edit); params.put("user", EMChatManager.getInstance().getCurrentUser()); ConnServer server = new ConnServer(); String path = "http://" + getResources().getString(R.string.server) + "/api.php"; mReturnData = server.GetData(path, params, edit, handler); } } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); } public void refresh() { if (HomeworkListView != null && mAdapter != null) { mAdapter.notifyDataSetChanged(); } } /** * * * @param view */ public void back(View view) { finish(); } private final Handler handler = new Handler(Looper.getMainLooper()) { public void handleMessage(Message msg) { // ?MessageListView DialogDemo.dismiss(); String op = msg.obj.toString(); switch (msg.what) { case STATE_FINISH: { if (op.equals("inform_get")) { infos.clear(); for (int i = 0; i < mReturnData.size(); i++) { Info info = new Info(); info.setTitle(mReturnData.get(i).get("accepter").toString()); info.setDate(mReturnData.get(i).get("date").toString()); infos.add(info); } } mAdapter.notifyDataSetChanged(); swipeRefreshLayout.setRefreshing(false); } break; case STATE_FAIL: { String info = "Fail!"; if (msg.obj != null) { info = info + "\n" + msg.obj; } Toast.makeText(HomeworkListTeacherActivity.this, info, 1).show(); break; } case STATE_NULL: //Toast.makeText(getActivity().getApplicationContext(), getResources().getString(R.string.datanull),Toast.LENGTH_SHORT).show(); break; case STATE_LINKERR: { Toast.makeText(HomeworkListTeacherActivity.this, "", Toast.LENGTH_SHORT).show(); break; } case STATE_ERROR: Toast.makeText(HomeworkListTeacherActivity.this, "", Toast.LENGTH_SHORT).show(); break; default: } } }; }