ListViewTest

一·运行截图

xml文件

1.fruit.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <ImageView
        android:id="@+id/friut_image"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/friut_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:layout_marginLeft="10dip"  />

</LinearLayout>

2.activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    >

    <ListView
        android:id="@+id/list_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">
        </ListView>

</LinearLayout>

.java文件

1.Friut.java

package com.text.listviewtest;

public class Friut
{
	
	private String name;
	private int imageId;
	public Friut(String name,int imageId){
	this.name=name;
	this.imageId=imageId;
	}
	public String getName(){
		return name;
	}
   public int getimageId(){
	   return imageId;
   }
}

2.FriutAdapter.java

package com.text.listviewtest;

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.ImageView;
import android.widget.TextView;

public class FriutAdapter extends ArrayAdapter<Friut>
{
private int resourceId;
	public FriutAdapter(Context context, int textViewResourceId, List<Friut> objects)
	{
		super(context,  textViewResourceId, objects);
		resourceId= textViewResourceId;
	}
public View getView(int position,View convertView,ViewGroup parent){
	Friut friut = getItem(position);
	View view=LayoutInflater.from(getContext()).inflate(resourceId, null);
	ImageView friutImage=(ImageView)view.findViewById(R.id.friut_image);
	TextView friutName=(TextView)view.findViewById(R.id.friut_name);
	friutImage.setImageResource(friut.getimageId());
	friutName.setText(friut.getName());
	return view;
}
}

改进后的适配器

<pre name="code" class="java"> package com.example.uilistviewtest;

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.ImageView;
import android.widget.TextView;

public class FruitAdapter extends ArrayAdapter<Fruit> {

	private int resourceId;

	public FruitAdapter(Context context, int textViewResourceId,
			List<Fruit> objects) {
		super(context, textViewResourceId, objects);
		resourceId = textViewResourceId;
	}
	public View getView(int position, View convertView, ViewGroup parent) {
		Fruit fruit = getItem(position);
		View view;
		ViewHolder viewHolder;
		if (convertView == null) {
			view = LayoutInflater.from(getContext()).inflate(resourceId, null);
			viewHolder = new ViewHolder();
			viewHolder.fruitImage = (ImageView) view.findViewById(R.id.fruit_image);
			viewHolder.fruitName = (TextView) view.findViewById(R.id.fruit_name);
			view.setTag(viewHolder);
		} else {
			view = convertView;
			viewHolder = (ViewHolder) view.getTag();
		}
		viewHolder.fruitImage.setImageResource(fruit.getImageId());
		viewHolder.fruitName.setText(fruit.getName());
		return view;
	}	
	class ViewHolder {
		
		ImageView fruitImage;
		
		TextView fruitName;		
	}
}

3.MainActivity.java

package com.text.listviewtest;

import java.util.ArrayList;
import java.util.List;

import android.os.Bundle;
import android.app.Activity;
import android.widget.ListView;

public class MainActivity extends Activity
{
    private List<Friut> friutList=new ArrayList<Friut>();
	@Override
	protected void onCreate(Bundle savedInstanceState)
	{
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		initFriuts();//初始化水果数据
		FriutAdapter adapter=new  FriutAdapter(MainActivity.this,R.layout.friut_item,friutList);
		ListView listView=(ListView)findViewById(R.id.list_view);
		listView.setAdapter(adapter);
	}
	private void initFriuts(){
		Friut apple=new Friut("Apple",R.drawable.apple_pic);
		friutList.add(apple);
		Friut banana=new Friut("Banana",R.drawable.banana_pic);
		friutList.add(banana);
		Friut orange=new Friut("Orange",R.drawable.orange_pic);
		friutList.add(orange);
		Friut watermelon=new Friut("Watermelon",R.drawable.watermelon_pic);
		friutList.add(watermelon);
		Friut pear=new Friut("Pear",R.drawable.pear_pic);
		friutList.add(pear);
		Friut grape=new Friut("Grape",R.drawable.grape_pic);
		friutList.add(grape);
		Friut pineapple=new Friut("Pineapple",R.drawable.pineapple_pic);
		friutList.add(pineapple);
		Friut strawberry=new Friut("Strawberry",R.drawable.strawberry_pic);
		friutList.add(strawberry);
		Friut cherry=new Friut("Cherry",R.drawable.cherry_pic);
		friutList.add(cherry);
		Friut mango=new Friut("Mango",R.drawable.mango_pic);
		friutList.add(mango);
		Friut apple1=new Friut("Apple",R.drawable.apple_pic);
		friutList.add(apple);
		Friut banana1=new Friut("Banana",R.drawable.banana_pic);
		friutList.add(banana);
		Friut orange1=new Friut("Orange",R.drawable.orange_pic);
		friutList.add(orange);
		Friut watermelon1=new Friut("Watermelon",R.drawable.watermelon_pic);
		friutList.add(watermelon);
		Friut pear1=new Friut("Pear",R.drawable.pear_pic);
		friutList.add(pear);
		Friut grape1=new Friut("Grape",R.drawable.grape_pic);
		friutList.add(grape);
		Friut pineapple1=new Friut("Pineapple",R.drawable.pineapple_pic);
		friutList.add(pineapple);
		Friut strawberry1=new Friut("Strawberry",R.drawable.strawberry_pic);
		friutList.add(strawberry);
		Friut cherry1=new Friut("Cherry",R.drawable.cherry_pic);
		friutList.add(cherry);
		Friut mango1=new Friut("Mango",R.drawable.mango_pic);
		friutList.add(mango);
	}
}