Android adapter and monitor tap and scroll usage in the ListView

Package com.example.demon08;

Import java.util.ArrayList;
Import Java.util.HashMap;
Import java.util.List;
Import Java.util.Map;

Import android.support.v7.app.ActionBarActivity;
Import Android.os.Bundle;
Import Android.util.Log;
Import Android.view.Menu;
Import Android.view.MenuItem;
Import Android.view.View;
Import Android.widget.AbsListView;
Import Android.widget.AbsListView.OnScrollListener;
Import Android.widget.AdapterView;
Import Android.widget.AdapterView.OnItemClickListener;
Import Android.widget.ArrayAdapter;
Import Android.widget.ListView;
Import Android.widget.SimpleAdapter;
Import Android.widget.Toast;

public class Mainactivity extends actionbaractivity implements onitemclicklistener,onscrolllistener{

Private ListView ListView;
Private arrayadapter<string> Arr_adapter;
Private Simpleadapter Simp_adapter;
Private list<map<string,object>>datalist;
@Override
protected void OnCreate (Bundle savedinstancestate) {
Super.oncreate (savedinstancestate);
Setcontentview (R.layout.main);
listview= (ListView) Findviewbyid (R.id.listview);
Create a new adapter
Arrayadapter (context, the layout file that corresponds to each list item loaded by the current ListView, data Source)
Adapter Load Data Source
string[]arr_data={"Combat Tyrannosaurus rex", "Mechanical Tyrannosaurus rex", "zombie Tyrannosaurus rex", "Tyrannosaurus rex", "Agur Beast", "Ball Beast"};
Arr_adapter=new arrayadapter<string> (this,android. R.layout.simple_list_item_1,arr_data);
Simpleadapter
Context
Data source list<? Extends Map<string,?>> data A Map composed of a list collection,
Each map will go to a row in the ListView list
The key in each map (key-value pair) must contain all the keys specified in the From
Resource: The layout file ID of the list item
Key names in the From:map
ID in the bound Data view, corresponding to from
Datalist=new arraylist<map<string,object>> ();
Simp_adapter=new Simpleadapter (This,getdata (), r.layout.item,new string[]{"pic", "text"},new Int[]{r.id.pic, R.id.text});
View Load Adapter
Listview.setadapter (Arr_adapter);
Listview.setadapter (Simp_adapter);
Listview.setonitemclicklistener (this);
Listview.setonscrolllistener (this);
}

Private List<map<string,object>> GetData () {
for (int i=0;i<20;i++) {
Map<string,object> map=new hashmap<string,object> ();
Map.put ("Pic", R.drawable.ic_launcher);
Map.put ("text", "Knife Punch" +i);
Datalist.add (map);
}

return dataList;
}

@Override
public void Onscroll (Abslistview view, int firstvisibleitem,
int visibleitemcount, int totalitemcount) {
TODO auto-generated Method Stub

}

@Override
public void onscrollstatechanged (Abslistview view, int scrollstate) {
TODO auto-generated Method Stub
Switch (scrollstate) {
Case scroll_state_fling:
LOG.I ("Main", "the user has left the screen, the view still relies on inertia to continue sliding, as a result of a hard slide");
Map<string,object>map=new hashmap<string,object> ();
Map.put ("Pic", R.drawable.ic_launcher);
Map.put ("Text", "Add Item");
Datalist.add (map);
Simp_adapter.notifydatasetchanged ();
Break
Case Scroll_state_idle:
LOG.I ("Main", "View has stopped sliding");
Break
Case Scroll_state_touch_scroll:
LOG.I ("Main", "finger does not leave the screen, the view is sliding");
Break
}
}

@Override
public void Onitemclick (adapterview<?> parent, view view, int position, long ID) {
TODO auto-generated Method Stub
String text=listview.getitematposition (position) + "";
Toast.maketext (This, "position=" +position+ "text=" +text,toast.length_short). Show ();
}

}

Android adapter and monitor tap and scroll usage in the ListView