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;

   }
}