New Android control RecyclerView

New Android control RecyclerView

RecyclerView is a new Widgets in the android-support-v7-21 version. We can use RecyclerView to easily implement horizontal and vertical ListView. GridView and waterfall stream effects. Let's take a look at the project implementation results first.

Is it amazing? RecyclerView can be easily implemented. <喎?http: www.bkjia.com kf ware vc " target="_blank" class="keylink"> Authorization + authorization + vJvrP9tcS2r7ut0Ke5 + zxiciAvPg0KNC7L/authorization/t9a0 + sLro7o8L3A + DQo8cHJlIGNsYXNzPQ = "brush: java;"> MRecyclerView = (RecyclerView) findViewById (R. id. rv); // set its Adapter myRecyclerViewListAdapater = new MyRecyclerViewListAdapater (this, sourceDatas); mRecyclerView. setAdapter (myRecyclerViewListAdapater); // set its LayoutManage, and set its display mode through LayoutManager LinearLayoutManager linearLayoutManager = new LinearLayoutManager (this, LinearLayoutManager. VERTICAL, false); mRecyclerView. setLayoutManager (linearLayoutManager); // sets the split line // dividerItemDecoration = new DividerItemDecoration (this, LinearLayoutManager. VERTICAL); // mRecyclerView. addItemDecoration (dividerItemDecoration); // you can add the mRecyclerView animation to delete an Item. setItemAnimator (new DefaultItemAnimator (); myRecyclerViewListAdapater. setOnItemClickListener (new MyRecyclerViewListAdapater. onItemClickListener () {@ Override public void onItemClickListener (View view, int position) {Toast. makeText (MainActivity. this, click: + position, Toast. LENGTH_SHORT ). show () ;}@ Override public boolean onLongItemClickListener (View view, int position) {myRecyclerViewListAdapater. deleteItem (position); return false ;}});

Adapter code

Public class MyRecyclerViewListAdapater extends RecyclerView. Adapter
  
   
{Private Context context; protected List
   
    
SourceDatas; private LayoutInflater layoutInflater; public OnItemClickListener mOnItemClickListener; public MyRecyclerViewListAdapater (Context context, List
    
     
SourceDatas) {this. context = context; this. sourceDatas = sourceDatas; layoutInflater = LayoutInflater. from (context) ;}@ Override public MyRecyclerViewListAdapater. myListHolder onCreateViewHolder (ViewGroup viewGroup, int I) {View = layoutInflater. inflate (R. layout. item, viewGroup, false); MyListHolder myListHolder = new MyListHolder (view); return myListHolder ;}@ Override public void onBindViewHo Lder (final MyListHolder viewHolder, final int I) {viewHolder. textView. setText (sourceDatas. get (I); itemClick (viewHolder);}/*** ItemView Click Event */protected void itemClick (final MyListHolder viewHolder) {viewHolder. itemView. setOnClickListener (new View. onClickListener () {@ Override public void onClick (View v) {if (null! = MOnItemClickListener) {int postion = viewHolder. getLayoutPosition (); mOnItemClickListener. onItemClickListener (viewHolder. itemView, postion) ;}}); viewHolder. itemView. setOnLongClickListener (new View. onLongClickListener () {@ Override public boolean onLongClick (View v) {if (null! = MOnItemClickListener) {int position = viewHolder. getLayoutPosition (); return mOnItemClickListener. onLongItemClickListener (viewHolder. itemView, position) ;}return false ;}}) ;}/ *** number of items returned by the method **/@ Override public int getItemCount () {return sourceDatas. size ();}/*** add item */public void addItem (int position) {sourceDatas. add (position, Add Item); notifyItemInserted (position);}/*** delete Item */public void deleteItem (int positon) {sourceDatas. remove (positon); notifyItemRemoved (positon);}/*** set the item Click Interface */public void setOnItemClickListener (OnItemClickListener onItemClickListener) {this. mOnItemClickListener = onItemClickListener;}/*** the Recycler itself does not provide ItemClick events to us, here we need to implement this interface by ourselves * Click interface **/public interface OnItemClickListener {// click the event public void onItemClickListener (View view, int position ); // long press event public boolean onLongItemClickListener (View view, int position);} class MyListHolder extends RecyclerView. viewHolder {TextView textView; // inherits RecyclerView. viewHolder must implement its constructor // you can see that a View parameter is received in its constructor. This View is the ItemView public MyListHolder (View itemView) we created) {super (itemView); textView = (TextView) itemView. findViewById (R. id. TV _list_item );}}}
    
   
  

Layout: