Silicon Valley social 12-group list page, Silicon Valley social 12-list

Silicon Valley social 12-group list page, Silicon Valley social 12-list

1) Page Layout

<? Xml version = "1.0" encoding = "UTF-8"?> <LinearLayout xmlns: android = "http://schemas.android.com/apk/res/android" xmlns: tools = "http://schemas.android.com/tools" xmlns: app = "http://schemas.android.com/apk/res-auto" android: layout_width = "match_parent" android: layout_height = "match_parent" android: orientation = "vertical"> <com. hyphenate. easeui. widget. easeTitleBar app: titleBarTitle = "group list" android: layout_width = "match_parent" android: layout_height = "wrap_content"> </com. hyphenate. easeui. widget. easeTitleBar> <ListView android: id = "@ + id/lv_grouplist" android: layout_width = "match_parent" android: layout_height = "match_parent"> </ListView> </LinearLayout>

2) Add a header layout for Listview

// Get the header layout viewView headerView = View. inflate (GroupListActivity. this, R. layout. header_group_list, null); // Add the header layout viewlv_group_list.addHeaderView (headerView );

3) Listview Initialization

// Create the adapter mGroupListAdapter = new GroupListAdapter (GroupListActivity. this); // Add the adapter to the listview lv_group_list.setAdapter (mGroupListAdapter );

4) Listview Adapter

Public class GroupListAdapter extends BaseAdapter {private Context mContext; private List <EMGroup> mEMGroups = new ArrayList <> (); public GroupListAdapter (Context context) {mContext = context ;} // refresh method public void refresh (List <EMGroup> eMGroups) {if (eMGroups! = Null & eMGroups. size ()> = 0) {// load data mEMGroups. clear (); mEMGroups. addAll (eMGroups); // notifyDataSetChanged () ;}@ Override public int getCount () {return mEMGroups = null? 0: mEMGroups. size () ;}@ Override public Object getItem (int position) {return mEMGroups. get (position) ;}@ Override public long getItemId (int position) {return position ;}@ Override public View getView (int position, View convertView, ViewGroup parent) {// create or obtain viewhoder ViewHolder holder = null; if (convertView = null) {holder = new ViewHolder (); convertView = View. inflate (mContext, R. layout. item_group_list, null); holder. TV _name = (TextView) convertView. findViewById (R. id. TV _group_list_name); convertView. setTag (holder);} else {holder = (ViewHolder) convertView. getTag () ;}// obtain the current item data EMGroup emGroup = mEMGroups. get (position); // display the data holder. TV _name.setText (emGroup. getGroupName (); // return convertview return convertView;} static class ViewHolder {TextView TV _name ;}}

5) Obtain group contact information from the email service

// Obtain group information through the Internet private void getGroupFromHxServier () Rule model.getinstace().getgolbalthreadpool(cmd.exe cute (new Runnable () {@ Overridepublic void run () {try {// obtain group information through the Internet em. getInstance (). groupManager (). getJoinedGroupsFromServer (); runOnUiThread (new Runnable () {@ Overridepublic void run () {Toast. makeText (GroupListActivity. this, "group information loaded successfully", Toast. LENGTH_SHORT ). show (); // refresh the mGroupListAdapter. refresh (EMClient. getInstance (). groupManager (). getAllGroups () ;}});} catch (HyphenateException e) {e. printStackTrace (); runOnUiThread (new Runnable () {@ Overridepublic void run () {Toast. makeText (GroupListActivity. this, "failed to load group information", Toast. LENGTH_SHORT ). show ();}});}}});}

6) refresh the page with Listview

// Refresh the display mGroupListAdapter. refresh (EMClient. getInstance (). groupManager (). getAllGroups ());

7) Click events of group list entries

// Click Event lv_group_list.setOnItemClickListener (new AdapterView. OnItemClickListener () {@ Overridepublic void onItemClick (AdapterView <?> Parent, View view, int position, long id) {// jump to the chat page Intent intent = new Intent (GroupListActivity. this, ChatActivity. class); // obtain the group idString groupId = EMClient. getInstance (). groupManager (). getAllGroups (). get (position-1 ). getGroupId (); intent. putExtra (EaseConstant. EXTRA_USER_ID, groupId); // Save the group chat type intent. putExtra (EaseConstant. EXTRA_CHAT_TYPE, EaseConstant. CHATTYPE_GROUP); startActivity (intent );}});

8) create a click listener for a new group

// The Click Event ll_group_list.setOnClickListener (new View. onClickListener () {@ Overridepublic void onClick (View v) {// jump to the new group page Intent intent = new Intent (GroupListActivity. this, NewGroupActivity. class); startActivity (intent );}});

9) refresh the page when the page is visible

@ Overrideprotected void onResume () {super. onResume (); // refresh the mGroupListAdapter. refresh (EMClient. getInstance (). groupManager (). getAllGroups ());}