Android Combat Simple Tutorial-15th Gun (implement button click event Monitoring in the ListView)

1.main.xml

<relativelayout xmlns:android= "http://schemas.android.com/apk/res/android"    xmlns:tools= "http// Schemas.android.com/tools "    android:layout_width=" match_parent "    android:layout_height=" Match_parent "    android:paddingbottom= "@dimen/activity_vertical_margin"    android:paddingleft= "@dimen/activity_ Horizontal_margin "    android:paddingright=" @dimen/activity_horizontal_margin "    android:paddingtop=" @dimen /activity_vertical_margin "    tools:context=". Mainactivity ">    <listview        android:id=" @+id/listview "        android:layout_width=" Match_parent "        android:layout_height= "Match_parent" >    </ListView></RelativeLayout>

2.listitem.xml

<?xml version= "1.0" encoding= "Utf-8"? ><relativelayout xmlns:android= "http://schemas.android.com/apk/res/ Android "    android:layout_width=" match_parent "    android:layout_height=" Wrap_content "    android: Descendantfocusability= "blocksdescendants"    android:orientation= "Horizontal" >    <textview        Android:id= "@+id/textview1"        android:layout_width= "wrap_content"        android:layout_height= "Wrap_content"        android:text= "Content"        android:textcolor= "#ff0000"        android:textsize= "20sp"/>    <button        android:id= "@+id/button1"        android:layout_width= "wrap_content"        android:layout_height= "Wrap_ Content "        android:focusable=" false "        android:layout_alignparentright=" true "        android:text=" button "        android:textcolor= "#ff0000"        android:textsize= "20SP"/></relativelayout>

3.ContentAdapter

Package Com.example.listviewchangetext;import Java.util.list;import Android.content.context;import Android.util.log;import Android.view.layoutinflater;import Android.view.view;import Android.view.view.onclicklistener;import Android.view.viewgroup;import Android.widget.baseadapter;import Android.widget.button;import Android.widget.textview;public class Contentadapter extends Baseadapter {private static F    inal String TAG = "Contentadapter";    Private list<string> mcontentlist;    Private Layoutinflater Minflater;    Private Myclicklistener Mlistener;        Public Contentadapter (context context, List<string> contentlist,//constructor Method Myclicklistener listener) {        Mcontentlist = ContentList;        Minflater = Layoutinflater.from (context);    Mlistener = listener;        } @Override public int getcount () {log.i (TAG, "GetCount");    return Mcontentlist.size ();    } @Override public Object getItem (int position) {log.i (TAG, "GetItem");    return Mcontentlist.get (position);        } @Override public long getitemid (int position) {log.i (TAG, "Getitemid");    return position;        } @Override public View getView (int position, view Convertview, ViewGroup parent) {LOG.I (TAG, "GetView");        Viewholder holder = null;            if (Convertview = = null) {Convertview = minflater.inflate (R.layout.listitem, NULL);            Holder = new Viewholder ();            Holder.textview = (TextView) convertview. Findviewbyid (R.id.textview1);            Holder.button = (Button) Convertview.findviewbyid (R.id.button1);        Convertview.settag (holder);        } else {holder = (Viewholder) convertview.gettag ();        } holder.textView.setText (Mcontentlist.get (position));        Holder.button.setOnClickListener (Mlistener);        Holder.button.setTag (position);    return convertview;        } public class Viewholder {public TextView TextView;Public button button; }/** * Abstract class for callbacks * @author Ivan Xu * 2014-11-26 * * * public static abstract class Myclicklistener Impl Ements Onclicklistener {/** * base class's OnClick method */@Override public void onclick (View v)        {Myonclick (Integer) V.gettag (), v);    } public abstract void Myonclick (int position, View v); }}

4.mainactivity.java

Package Com.example.listviewchangetext;import Java.util.arraylist;import Java.util.list;import Android.app.activity;import Android.os.bundle;import Android.view.menu;import Android.view.View;import Android.widget.adapterview;import Android.widget.adapterview.onitemclicklistener;import Android.widget.ListView; Import Android.widget.toast;import Com.example.listviewchangetext.contentadapter.myclicklistener;public class Mainactivity extends Activity implements Onitemclicklistener {//Simulate data loaded in ListView private static final string[] CON    Tents = {"Beijing", "Shanghai", "Guangzhou", "Shenzhen", "Suzhou", "Nanjing", "Wuhan", "Changsha", "Hangzhou"};    Private list<string> ContentList;    Private ListView Mlistview;        @Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);        Setcontentview (R.layout.activity_main);    Init ();        } private void Init () {Mlistview = (ListView) Findviewbyid (R.id.listview); ContentList = new Arraylist<string> ();        for (int i = 0; i < contents.length; i++) {Contentlist.add (contents[i]);                }//Instantiate the Contentadapter class and pass in the implementation class Mlistview.setadapter (new Contentadapter (this, ContentList, Mlistener));    Mlistview.setonitemclicklistener (this);        @Override public boolean Oncreateoptionsmenu (Menu menu) {getmenuinflater (). Inflate (R.menu.main, menu);    return true;        }//Response item Click event @Override public void Onitemclick (adapterview<?> arg0, View v, int position, long ID) { Toast.maketext (This, "The ListView item is clicked!    , click the location--"+ position, Toast.length_short). Show ();        }/** * Implementation class, Response button click event */private Myclicklistener Mlistener = new Myclicklistener () {@Override                    public void Myonclick (int position, View v) {toast.maketext (Mainactivity.this, "The button inside the ListView has been clicked!"                           , location is-"+ position +", content is-" + contentlist.get (position), Toast.length_short). Show (); }    };}

5. Run the following example:

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Android Combat Simple Tutorial-15th Gun (implement button click event Monitoring in the ListView)