Use of the Android ListView control

How to make the following effect:

First, look at the layout of the main interface Activity_main.xml:toolbar + ListView

<?XML version= "1.0" encoding= "Utf-8"?><LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"Xmlns:app= "Http://schemas.android.com/apk/res-auto"Xmlns:tools= "Http://schemas.android.com/tools"Android:layout_width= "Match_parent"Android:layout_height= "Match_parent"android:orientation= "vertical"Tools:context= "Com.ahcc08.ahcc08.listviewdemo.MainActivity">    <Android.support.design.widget.AppBarLayoutAndroid:layout_height= "Wrap_content"Android:layout_width= "Match_parent"Android:theme= "@style/apptheme.appbaroverlay">        <Android.support.v7.widget.ToolbarAndroid:id= "@+id/toolbar"Android:layout_width= "Match_parent"Android:layout_height= "? Attr/actionbarsize"Android:background= "? Attr/colorprimary"App:popuptheme= "@style/apptheme.popupoverlay" />    </Android.support.design.widget.AppBarLayout>    <ListViewAndroid:id= "@+id/listview"Android:layout_width= "Match_parent"Android:layout_height= "0DP"Android:layout_weight= "1">    </ListView></LinearLayout>

Second, create a new item layout to display the ListView: List_item.xml

<?XML version= "1.0" encoding= "Utf-8"?><LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"Android:layout_width= "Match_parent"Android:layout_height= "Match_parent"android:orientation= "vertical">    <RelativelayoutAndroid:id= "@+id/ral_p1"Android:layout_width= "Match_parent"Android:layout_height= "60DP" >        <ImageViewAndroid:id= "@+id/iv_p1"Android:layout_width= "35DP"Android:layout_height= "29DP"android:layout_centervertical= "true"Android:layout_marginleft= "3DP"android:src= "@drawable/hot" />        <TextViewAndroid:id= "@+id/title"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"android:layout_centervertical= "true"Android:layout_marginleft= "13DP"Android:layout_torightof= "@+id/iv_p1"Android:text= "ListItem"android:textsize= "16SP" />        <ImageViewAndroid:layout_width= "12DP"Android:layout_height= "14.5DP"Android:layout_alignparentright= "true"android:layout_centervertical= "true"Android:layout_marginright= "15DP"android:src= "@drawable/info_go" />        <ViewAndroid:layout_width= "Match_parent"Android:layout_height= "1DP"Android:layout_alignparentbottom= "true"Android:background= "#ff00c0ff" />    </Relativelayout></LinearLayout>

Third, the main interface implementation: Mainactivity.java

 PackageCom.ahcc08.ahcc08.listviewdemo;ImportAndroid.os.Bundle;Importandroid.support.v7.app.AppCompatActivity;ImportAndroid.support.v7.widget.Toolbar;ImportAndroid.view.View;ImportAndroid.widget.AdapterView;ImportAndroid.widget.ListView;ImportAndroid.widget.Toast;Importjava.util.ArrayList;Importjava.util.List; Public classMainactivityextendsappcompatactivity {List<String> myList =NewArraylist<string>();    ListView ListView;    Mylistadapter adapter; @Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);        Setcontentview (R.layout.activity_main); Toolbar Toolbar=(Toolbar) Findviewbyid (R.id.toolbar);        Setsupportactionbar (toolbar);        Initlist (); //Get the ListView controlListView =(ListView) Findviewbyid (R.id.listview); //Create a new adapteradapter =NewMylistadapter (mainactivity. This, myList);        Listview.setadapter (adapter); Listview.setonitemclicklistener (NewAdapterview.onitemclicklistener () {@Override Public voidOnitemclick (adapterview<?>Parent, view view,intPositionLongID) {String text=Mylist.get (position); Toast.maketext (mainactivity. This, text, Toast.length_short). Show ();    }        }); }    Private voidinitlist () {mylist.clear ();  for(inti = 0; I < 10; i++) {Mylist.add ("Item" +i); }    }}

Four, the implementation of the adapter: Mylistadapter.java

 PackageCom.ahcc08.ahcc08.listviewdemo;ImportAndroid.content.Context;ImportAndroid.view.LayoutInflater;ImportAndroid.view.View;ImportAndroid.view.ViewGroup;ImportAndroid.widget.BaseAdapter;ImportAndroid.widget.TextView;Importjava.util.List; Public classMylistadapterextendsbaseadapter {layoutinflater inflater=NULL; List<String>Mlistdata;  PublicMylistadapter (context context, list<string>mlistdata) {        Super(); Inflater=Layoutinflater.from (context);  This. Mlistdata =Mlistdata; } @Override Public intGetCount () {returnmlistdata.size (); } @Override Public LongGetitemid (intposition) {        returnposition; } @Override PublicObject GetItem (intposition) {        returnMlistdata.get (position); } @Override PublicView GetView (intposition, View Convertview, ViewGroup parent) {Viewholder VH=NULL; if(Convertview = =NULL) {Convertview= Inflater.inflate (R.layout.list_item,parent,false); VH=NewViewholder (); Vh.tv_title=(TextView) Convertview.findviewbyid (r.id.title);        Convertview.settag (VH); }Else{VH=(Viewholder) Convertview.gettag (); } String sinfo=(String) getItem (position);        Vh.tv_title.setText (Sinfo); returnConvertview; }     Public voidAddAll (list<string> List,Booleanisclear) {        if(isclear) {mlistdata.clear ();        Mlistdata.addall (list); }Else{mlistdata.addall (list);    } notifydatasetchanged (); }     Public voidAdd (String t) {Mlistdata.add (t);    Notifydatasetchanged (); }     Public voidRemove (String t) {mlistdata.remove (t);    Notifydatasetchanged (); }     Public voidClear () {mlistdata.clear ();    Notifydatasetchanged (); }    classviewholder{TextView Tv_title; }}

The code is quite simple.

Use of the Android ListView control