水果的横向布局

MainActivity.java

package com.example.listviewdemo;

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

import com.example.listviewdemo.adapter.FruitAdapter;
import com.example.listviewdemo.entity.Fruit;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends Activity {

	private GridView gvFruits;
	private List<Fruit> fruitList = new ArrayList<Fruit>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        gvFruits = (GridView) findViewById(R.id.gvFruit);

        getData();
        FruitAdapter fruitAdapter = new FruitAdapter(this, R.layout.listview_item, fruitList);
        gvFruits.setAdapter(fruitAdapter);
        gvFruits.setOnItemClickListener(new OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView<?> adapterView, View view, int position,
					long id) {
				// TODO Auto-generated method stub
				Fruit fruit = fruitList.get(position);
				Toast.makeText(MainActivity.this, fruit.getName(), Toast.LENGTH_LONG);
			}
		});
    }

    private void getData(){

    	int[] imageIds = {R.drawable.apple_pic,R.drawable.banana_pic,
    						R.drawable.cherry_pic,R.drawable.grape_pic,
    						R.drawable.mango_pic,R.drawable.orange_pic,
    						R.drawable.pear_pic,R.drawable.pineapple_pic,
    						R.drawable.strawberry_pic,R.drawable.watermelon_pic};
    	String[] names = {"苹果","香蕉","樱桃","葡萄","芒果","橘子","梨","菠萝","草莓","西瓜"};

    	for(int i = 0;i<imageIds.length;i++){
    		fruitList.add(new Fruit(imageIds[i], names[i]));
    	}
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}

FruitAdapter.java

package com.example.listviewdemo.adapter;

import java.util.List;

import com.example.listviewdemo.R;
import com.example.listviewdemo.entity.Fruit;

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;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {

		View view ;
		ViewHolder viewHolder;

		if(convertView == null){
			view = LayoutInflater.from(getContext()).inflate(resourceId, null);
			viewHolder = new ViewHolder();
			viewHolder.fruitImage = (ImageView)view.findViewById(R.id.ivImage);
			viewHolder.fruitName = (TextView)view.findViewById(R.id.tvName);
			view.setTag(viewHolder);
		}
		else{
			view = convertView;
			viewHolder = (ViewHolder)view.getTag();
		}

		Fruit fruit = getItem(position);

		viewHolder.fruitImage.setImageResource(fruit.getImageId());
		viewHolder.fruitName.setText(fruit.getName());
		return view;
	}

}

class ViewHolder{
	 ImageView fruitImage;
	TextView fruitName;

}

Fruit.java

package com.example.listviewdemo.entity;

public class Fruit {

	private int imageId;
	private String name;
	public int getImageId() {
		return imageId;
	}
	public void setImageId(int imageId) {
		this.imageId = imageId;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public Fruit(int imageId, String name) {
		super();
		this.imageId = imageId;
		this.name = name;
	}

}

listview_item.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"
    android:orientation="vertical" >

    <ImageView
        android:id="@+id/ivImage"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dp"
        android:src="@drawable/apple_pic"
        />

    <TextView
        android:id="@+id/tvName"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dp"
        android:layout_marginTop="10dp"
        android:text="Medium Text"
        android:textAppearance="?android:attr/textAppearanceMedium" />

</LinearLayout>

activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="10dp" >

    <GridView
        android:id="@+id/gvFruit"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:verticalSpacing="10dp"
        android:horizontalSpacing="10dp"
        android:numColumns="4" >
    </GridView>

</RelativeLayout>