android控件--TwoLineListItem

TwoLineListItem继承android.widget.RelativeLayout.由两个子视图组合而成，通常用在ListView中。

它需要两个TextView（ID值为text1，text2），还有一个可选的第三个VIew(ID值为selectedIcon)

<?xml version="1.0" encoding="utf-8"?> <TwoLineListItem xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content"> <ImageView android:id="@+id/icon" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@android:drawable/presence_offline"/> <TextView android:id="@android:id/text1" android:layout_marginTop="1dip" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_toRightOf="@id/icon" android:textSize="15dip" android:text="ssssssssssssssssssssssssss" android:textStyle="bold" /> <TextView android:id="@android:id/text2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@android:id/text1" android:layout_alignLeft="@android:id/text1" android:paddingBottom="4dip" android:includeFontPadding="false" android:textSize="15dip" android:text="" android:textStyle="normal" /> <ImageView android:id="@android:id/selectedIcon" android:layout_marginTop="9dip" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:layout_marginRight="7dip" android:src="@android:drawable/sym_action_call"/> </TwoLineListItem>
效果：

源码：

import java.util.ArrayList; import java.util.List; import android.app.ListActivity; import android.os.Bundle; public class TwoLineItemActivity extends ListActivity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setListAdapter(new ContactArrayAdapter(this, R.layout.main, getContacts())); } private List<Contacts> getContacts() { List<Contacts> contacts = new ArrayList<Contacts>(); Contacts c; c = new Contacts(); c.setName("Shriram"); c.setPhone("123456"); contacts.add(c); c = new Contacts(); c.setName("John"); c.setPhone("456789"); contacts.add(c); return contacts; } }
import java.util.List; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.widget.TwoLineListItem; public class ContactArrayAdapter extends ArrayAdapter<Contacts> { private int resourceId; public ContactArrayAdapter(Context context, int textViewResourceId,List<Contacts>object) { super(context, textViewResourceId,object); resourceId = textViewResourceId; // TODO Auto-generated constructor stub } @Override public View getView(int position,View convertView,ViewGroup parent){ Contacts contacts = getItem(position); if(contacts==null){ return null; } //得到一个LayoutInflater实例 LayoutInflater inflater =(LayoutInflater)getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE); TwoLineListItem view; if(convertView==null){ view=(TwoLineListItem) inflater.inflate(resourceId, parent,false);//由xml生成View }else{ view = (TwoLineListItem) convertView; } if(view.getText1()!=null){ view.getText1().setText(contacts.getName()); } if(view.getText2()!=null){ view.getText2().setText(contacts.getPhone()); } return view; } }