Recycleview Simple usage

Effect:

Mdrvactivity:

 Public classMdrvactivityextendsappcompatactivity {String imgur2= "Http://images.rednet.cn/ArticleImage/2017/04/25/201716483007449.jpg"; String Imgurl3= "Http://images.rednet.cn/ArticleImage/2017/04/25/2017167258494983.jpg"; String Geyan= "Education represents the past, ability represents the present, learning power represents the future"; PrivateRecyclerview Mrecyclerview; PrivateRecyclerview.adapter Madapter; PrivateRecyclerview.layoutmanager Mlayoutmanager; @Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);        Setcontentview (R.LAYOUT.RECYCLE_MDRV);        InitData ();    Initview (); }    Private voidInitData () {Mlayoutmanager=NewLinearlayoutmanager ( This, Linearlayoutmanager.vertical,false); Madapter=NewMyadapter (GetData ()); }    Private voidInitview () {//Recyclerview control ID, getting the Recyclerview controlMrecyclerview =(Recyclerview) Findviewbyid (R.id.my_recycler_view); //setting up the layout managerMrecyclerview.setlayoutmanager (Mlayoutmanager); //Set AdapterMrecyclerview.setadapter (Madapter); Mrecyclerview.additemdecoration (NewMydivideritemdecoration ( This, linearlayoutmanager.vertical)); }  /*private arraylist<newslistdata> GetData () {arraylist<newslistdata> data = new ARRAYLIST<NEWSL        Istdata> ();            for (int i = 0; i < i++) {newslistdata newslistdata=new newslistdata (imgur2,geyan+i, "10-11 recommended");        Data.add (Newslistdata);    } return data; }*/  protectedList GetData () {list Mdatas=NewArraylist<string>();  for(inti = ' A '; i < ' z '; i++) {Mdatas.add ("" + (Char) (i); }      returnMdatas; }}

Myadapter:

 Public classMyadapterextendsRecyclerview.adapter<myadapter.viewholder>{    PrivateList<string>Mdata;  Publicmyadapter (List data) { This. Mdata =data; }     Public voidUpdateData (List data) { This. Mdata =data;    Notifydatasetchanged (); } @Override PublicViewholder Oncreateviewholder (viewgroup parent,intViewType) {        //materialized view of the displayView v = layoutinflater.from (Parent.getcontext ()). Inflate (r.layout.my, parent,false); //Instantiate ViewholderViewholder Viewholder =NewViewholder (v); returnViewholder; } @Override Public voidOnbindviewholder (Viewholder holder,intposition) {        //binding DataHolder.mTv.setText ((charsequence) mdata.get (position)); } @Override Public intGetItemCount () {returnMdata = =NULL? 0: Mdata.size (); }     Public Static classViewholderextendsRecyclerview.viewholder {TextView mTv;  PublicViewholder (View itemview) {Super(Itemview); MTv=(TextView) Itemview.findviewbyid (R.ID.ITEM_TV); }    }}

Mydivideritemdecoration Add split Line:

 Public classMydivideritemdecorationextendsrecyclerview.itemdecoration {Private Static Final int[] Attrs =New int[]{android.    R.attr.listdivider};  Public Static Final intHorizontal_list =Linearlayoutmanager.horizontal;  Public Static Final intVertical_list =linearlayoutmanager.vertical; /*** For drawing interval styles*/    Privatedrawable Mdivider; /*** The direction of the list, horizontal/Vertical*/    Private intmorientation;  PublicMydivideritemdecoration (Context context,intorientation) {        //Get properties for a default theme        FinalTypedArray A =context.obtainstyledattributes (attrs); Mdivider= a.getdrawable (0);        A.recycle ();    SetOrientation (orientation); } @Override Public voidOnDraw (Canvas C, Recyclerview parent, recyclerview.state state) {//Draw Interval        if(Morientation = =vertical_list)        {Drawvertical (c, parent); } Else{Drawhorizontal (c, parent); }} @Override Public voidgetitemoffsets (Rect outrect, view view, Recyclerview parent, recyclerview.state state) {if(Morientation = =vertical_list) {Outrect.set (0, 0, 0, Mdivider.getintrinsicheight ()); } Else{Outrect.set (0, 0, mdivider.getintrinsicwidth (), 0); }    }    Private voidSetOrientation (intorientation) {        if(Orientation! = Horizontal_list && Orientation! =vertical_list) {            Throw NewIllegalArgumentException ("Invalid orientation"); } morientation=orientation; }    /*** Draw Interval*/    Private voiddrawvertical (Canvas C, Recyclerview parent) {Final intleft =Parent.getpaddingleft (); Final intright = Parent.getwidth ()-parent.getpaddingright (); Final intChildCount =Parent.getchildcount ();  for(inti = 0; i < ChildCount; i++) {            FinalView Child =Parent.getchildat (i); FinalRecyclerview.layoutparams params =(recyclerview.layoutparams) child. Getlayoutparams (); Final inttop = Child.getbottom () + Params.bottommargin +Math.Round (Viewcompat.gettranslationy (child)); Final intBottom = top +mdivider.getintrinsicheight ();            Mdivider.setbounds (left, top, right, bottom);        Mdivider.draw (c); }    }    /*** Draw Interval*/    Private voiddrawhorizontal (Canvas C, Recyclerview parent) {Final inttop =Parent.getpaddingtop (); Final intBottom = Parent.getheight ()-Parent.getpaddingbottom (); Final intChildCount =Parent.getchildcount ();  for(inti = 0; i < ChildCount; i++) {            FinalView Child =Parent.getchildat (i); FinalRecyclerview.layoutparams params =(recyclerview.layoutparams) child. Getlayoutparams (); Final intleft = Child.getright () + Params.rightmargin +Math.Round (Viewcompat.gettranslationx (child)); Final intright = left +mdivider.getintrinsicheight ();            Mdivider.setbounds (left, top, right, bottom);        Mdivider.draw (c); }    }}

Recycle_main.xml:

<?xml version= "1.0" encoding= "Utf-8"? ><linearlayout xmlns:android= "http://schemas.android.com/apk/res/ Android "    xmlns:tools=" Http://schemas.android.com/tools "    android:orientation=" Vertical "    android:layout_width=" Match_parent "    android:layout_height=" 500px "     Android:layout_margintop= "100px"    tools:ignore= "Missingdefaultresource" >    <  Android.support.v7.widget.RecyclerView        Android:id= "@+id/my_recycler_view"        android: ScrollBars= "vertical"        android:layout_width= "Match_parent"        android:layout_ Height= "Match_parent"/></linearlayout>

Item.xml:

<?xml version= "1.0" encoding= "Utf-8"? ><linearlayout   xmlns:android= "http://schemas.android.com/apk/ Res/android "    xmlns:tools=" Http://schemas.android.com/tools "    android:orientation=" Vertical "android:layout_width=" Match_parent "android:layout_height=" 50DP "    tools: Ignore= "Missingdefaultresource" ><TextView    android:id= "@+id/item_tv"    Android : Layout_width= "Match_parent"    android:layout_height= "Match_parent"    android: Gravity= "center"    /></linearlayout>

Recycleview Simple usage