android listview onitemclick

在Android中ListView的使用较为复杂一点，也就是配置其 Adapter，Adapter有几种，有ArrayAdapter,SimpleAdapter等，首先要生成一个ListView(当然可以使用 ListActivity,此Activity整合了ListView)然后用Adapter来设定ListView的显示数据及布局方式，然后再来响应 OnItemClick事件，或者在ListActivity改写onListItemClick响应事件函数。看如下代码演示了使用 ListActivity：


import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleAdapter;

public class Test extends ListActivity{
@Override
protected void onListItemClick(ListViewl,Viewv, int position, long id){
// TODOAuto-generatedmethodstub
super .onListItemClick(l,v,position,id);
this .setTitle( this .mModelData.get(position).get( " type " ).toString());
}
SimpleAdapteradapter = null ;
private ArrayList < Map < String,Object >> mModelData = null ;
/** Calledwhentheactivityisfirstcreated. */
@Override
public void onCreate(BundlesavedInstanceState){
super .onCreate(savedInstanceState);
initModelData();
adapter = new SimpleAdapter( this ,mModelData,android.R.layout.two_line_list_item, new String[]{ " name " }, new int []{android.R.id.text1});
this .setListAdapter(adapter);
// setContentView(R.layout.main);
}
public void initModelData()
{
mModelData = new ArrayList < Map < String,Object >> ();
Map < String,Object > item = new HashMap < String,Object > ();
item.put( " name " , " Linux " );item.put( " type " , " OS " );
mModelData.add(item);
Map < String,Object > item2 = new HashMap < String,Object > ();
item2.put( " name " , " Android " );item2.put( " type " , " Platform " );
mModelData.add(item2);
Map < String,Object > item3 = new HashMap < String,Object > ();
item3.put( " name " , " Tomato " );item3.put( " type " , " Fruit " );
mModelData.add(item3);

}
}

下面代码显示了，使用ListView + Activity：


import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.AdapterView.OnItemClickListener;

public class TestStringList extends Activity implements OnItemClickListener{
@Override
public void onItemClick(AdapterView <?> arg0,Viewarg1, int arg2, long arg3){
this .setTitle( " YouClickItem: " + String.valueOf(arg2));
}
private ListViewmListView = null ;
@Override
protected void onCreate(BundlesavedInstanceState){
// TODOAuto-generatedmethodstub
super .onCreate(savedInstanceState);
mListView = new ListView( this );
mListView.setOnItemClickListener( this );
ArrayAdapter < String > adapter = new ArrayAdapter < String > ( this ,android.R.layout.simple_list_item_checked,
new String[]{ " ItemA " , " ItemB " , " ItemC " });
mListView.setAdapter(adapter);
this .setContentView(mListView);
}

}