/**
* Copyright (C) 2016 Hyphenate Inc. 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.fanxin.huangfangyi.ui;
import java.util.ArrayList;
import java.util.List;
import com.fanxin.huangfangyi.main.activity.ChatActivity;
import com.hyphenate.EMChatRoomChangeListener;
import com.hyphenate.chat.EMChatRoom;
import com.hyphenate.chat.EMClient;
import com.hyphenate.chat.EMCursorResult;
import com.fanxin.huangfangyi.R;
import com.hyphenate.exceptions.HyphenateException;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.inputmethod.InputMethodManager;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.Filter;
import android.widget.ImageButton;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;
public class PublicChatRoomsActivity extends BaseActivity {
private ProgressBar pb;
private TextView title;
private ListView listView;
private ChatRoomAdapter adapter;
private List<EMChatRoom> chatRoomList;
private boolean isLoading;
private boolean isFirstLoading = true;
private boolean hasMoreData = true;
private String cursor;
private final int pagesize = 50;
private LinearLayout footLoadingLayout;
private ProgressBar footLoadingPB;
private TextView footLoadingText;
private EditText etSearch;
private ImageButton ibClean;
private List<EMChatRoom> rooms;
private InputMethodManager inputMethodManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.em_activity_public_groups);
etSearch = (EditText)findViewById(R.id.query);
ibClean = (ImageButton)findViewById(R.id.search_clear);
etSearch.setHint(R.string.search);
inputMethodManager = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
pb = (ProgressBar) findViewById(R.id.progressBar);
listView = (ListView) findViewById(R.id.list);
title = (TextView)findViewById(R.id.tv_title);
title.setText(getResources().getString(R.string.chat_room));
chatRoomList = new ArrayList<EMChatRoom>();
rooms = new ArrayList<EMChatRoom>();
View footView = getLayoutInflater().inflate(R.layout.em_listview_footer_view, null);
footLoadingLayout = (LinearLayout) footView.findViewById(R.id.loading_layout);
footLoadingPB = (ProgressBar)footView.findViewById(R.id.loading_bar);
footLoadingText = (TextView) footView.findViewById(R.id.loading_text);
listView.addFooterView(footView, null, false);
footLoadingLayout.setVisibility(View.GONE);
etSearch.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (adapter != null) {
adapter.getFilter().filter(s);
}
if(s.length()>0){
ibClean.setVisibility(View.VISIBLE);
}else{
ibClean.setVisibility(View.INVISIBLE);
}
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void afterTextChanged(Editable s) {
}
});
ibClean.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
etSearch.getText().clear();
hideSoftKeyboard();
}
});
loadAndShowData();
EMClient.getInstance().chatroomManager().addChatRoomChangeListener(new EMChatRoomChangeListener(){
@Override
public void onChatRoomDestroyed(String roomId, String roomName) {
chatRoomList.clear();
if(adapter != null){
runOnUiThread(new Runnable(){
@Override
public void run() {
if(adapter != null){
adapter.notifyDataSetChanged();
loadAndShowData();
}
}
});
}
}
@Override
public void onMemberJoined(String roomId, String participant) {
}
@Override
public void onMemberExited(String roomId, String roomName,
String participant) {
}
@Override
public void onMemberKicked(String roomId, String roomName,
String participant) {
}
});
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
final EMChatRoom room = adapter.getItem(position);
Log.d("room.getId()--->",room.getId());
startActivity(new Intent(PublicChatRoomsActivity.this, ChatActivity.class).putExtra("chatType", 3).
putExtra("userId", room.getId()));
}
});
listView.setOnScrollListener(new OnScrollListener() {
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
if(scrollState == OnScrollListener.SCROLL_STATE_IDLE){
if(cursor != null){
int lasPos = view.getLastVisiblePosition();
if(hasMoreData && !isLoading && lasPos == listView.getCount()-1){
loadAndShowData();
}
}
}
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
}
});
}
private void loadAndShowData(){
new Thread(new Runnable() {
public void run() {
try {
isLoading = true;
final EMCursorResult<EMChatRoom> result = EMClient.getInstance().chatroomManager().fetchPublicChatRoomsFromServer(pagesize, cursor);
//get chat room list
final List<EMChatRoom> chatRooms = result.getData();
runOnUiThread(new Runnable() {
public void run() {
chatRoomList.addAll(chatRooms);
if(chatRooms.size() != 0){
cursor = result.getCursor();
}
if(isFirstLoading){
pb.setVisibility(View.INVISIBLE);
isFirstLoading = false;
adapter = new ChatRoomAdapter(PublicChatRoomsActivity.this, 1, chatRoomList);
listView.setAdapter(adapter);
rooms.addAll(chatRooms);
}else{
if(chatRooms.size() < pagesize){
hasMoreData = false;
footLoadingLayout.setVisibility(View.VISIBLE);
footLoadingPB.setVisibility(View.GONE);
footLoadingText.setText(getResources().getString(R.string.no_more_messages));
}
adapter.notifyDataSetChanged();
}
isLoading = false;
}
});
} catch (HyphenateException e) {
e.printStackTrace();
runOnUiThread(new Runnable() {
public void run() {
isLoading = false;
pb.setVisibility(View.INVISIBLE);
footLoadingLayout.setVisibility(View.GONE);
Toast.makeText(PublicChatRoomsActivity.this, getResources().getString(R.string.failed_to_load_data), 0).show();
}
});
}
}
}).start();
}
/**
* adapter
*
*/
private class ChatRoomAdapter extends ArrayAdapter<EMChatRoom> {
private LayoutInflater inflater;
private RoomFilter filter;
public ChatRoomAdapter(Context context, int res, List<EMChatRoom> rooms) {
super(context, res, rooms);
this.inflater = LayoutInflater.from(context);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = inflater.inflate(R.layout.em_row_group, null);
}
((TextView) convertView.findViewById(R.id.name)).setText(getItem(position).getName());
return convertView;
}
@Override
public Filter getFilter(){
if(filter == null){
filter = new RoomFilter();
}
return filter;
}
private class RoomFilter extends Filter{
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults results = new FilterResults();
if(constraint == null || constraint.length() == 0){
results.values = rooms;
results.count = rooms.size();
}else{
List<EMChatRoom> roomss = new ArrayList<EMChatRoom>();
for(EMChatRoom chatRoom : rooms){
if(chatRoom.getName().contains(constraint)){
roomss.add(chatRoom);
}
}
results.values = roomss;
results.count = roomss.size();
}
return results;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
chatRoomList.clear();
chatRoomList.addAll((List<EMChatRoom>)results.values);
notifyDataSetChanged();
}
}
}
public void back(View view){
finish();
}
}