Android Listview显示效果二

港控/mmm° 2022-07-15 03:39 215阅读 0赞

刚刚练习了纯字符串的Listview，单纯的string看着不是很好看，现在来做一个同时显示图片和文字的列表。

首先来看下成品样张：

![SouthEast][]

很明显感觉好看很多啊。

首先新建一个fruit类：

package top.qsstudy.levi.entity;
    
    /**
     * Created by levi on 2016/10/31.
     */
    public class Fruit {
        private String name;
        private int imageId;
        public Fruit(String name, int imageId) {
            this.name = name;
            this.imageId = imageId;
        }
        public String getName() {
            return name;
        }
        public int getImageId() {
            return imageId;
        }
    }

再新建一个FruitAdapter类

package top.qsstudy.levi.entity;
    
    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;
    
    import java.util.List;
    
    import top.qsstudy.levi.listview.R;
    
    /**
     * Created by levi on 2016/10/31.
     */
    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) {
            Fruit fruit = getItem(position); // 获取当前项的Fruit实例
            View view = LayoutInflater.from(getContext()).inflate(resourceId, null);
            ImageView fruitImage = (ImageView) view.findViewById(R.id.fruit_image);
            TextView fruitName = (TextView) view.findViewById(R.id.fruit_name);
            fruitImage.setImageResource(fruit.getImageId());
            fruitName.setText(fruit.getName());
            return view;
        }
    }

其中activity\_main.xml中内容如下:

<?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" >
        <ListView
            android:id="@+id/list_view"
            android:layout_width="match_parent"
            android:layout_height="match_parent" >
        </ListView>
    </LinearLayout>

最后修改MainActivity.java中的代码:

package top.qsstudy.levi.listview;
    
    import android.app.Activity;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.widget.ListView;
    
    import java.util.ArrayList;
    import java.util.List;
    
    import top.qsstudy.levi.entity.Fruit;
    import top.qsstudy.levi.entity.FruitAdapter;
    
    public class MainActivity extends Activity
    {
        private List<Fruit> fruitList = new ArrayList<Fruit>();
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            initFruits(); //  初始化水果数据
            FruitAdapter adapter = new FruitAdapter(MainActivity.this,
                    R.layout.fruit_item, fruitList);
            ListView listView = (ListView) findViewById(R.id.list_view);
            listView.setAdapter(adapter);
        }
        private void initFruits() {
            Fruit apple = new Fruit("Apple", R.drawable.apple);
            fruitList.add(apple);
            Fruit banana = new Fruit("Banana", R.drawable.banana);
            fruitList.add(banana);
            Fruit orange = new Fruit("Orange", R.drawable.orange);
            fruitList.add(orange);
            Fruit watermelon = new Fruit("Watermelon", R.drawable.watermelon);
            fruitList.add(watermelon);
            Fruit pear = new Fruit("Pear", R.drawable.pear);
            fruitList.add(pear);
            Fruit grape = new Fruit("Grape", R.drawable.grape);
            fruitList.add(grape);
            Fruit pineapple = new Fruit("Pineapple", R.drawable.pineapple);
            fruitList.add(pineapple);
            Fruit strawberry = new Fruit("Strawberry", R.drawable.strawberry);
            fruitList.add(strawberry);
            Fruit cherry = new Fruit("Cherry", R.drawable.cherry);
            fruitList.add(cherry);
            Fruit mango = new Fruit("Mango", R.drawable.mango);
            fruitList.add(mango);
        }
    }

当然了，还得把图片那些放到res文件夹得drawable中哈。

[SouthEast]: /images/20220715/5c8ffc9ef6d84e9dbfb79a85e90dd97b.png