Android实现购物商城

activity_main.xml

    <listview
        android:id="@+id/lv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:listselector="#b5dcfa">
    </listview>

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listview2.xml

<?xml version="1.0" encoding="utf-8"?>
<relativelayout xmlns:android=""
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <imageview
        android:id="@+id/iv"
        android:layout_width="120dp"
        android:layout_height="90dp"
        android:background="@drawable/table"
        android:layout_marginright="10dp">
    </imageview>
    <textview
        android:id="@+id/title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_torightof="@+id/iv"
        android:text="桌子"
        android:textsize="20dp"
        android:layout_margintop="10dp">
    </textview>
    <textview
        android:id="@+id/price"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_torightof="@id/iv"
        android:layout_below="@id/title"
        android:text="价格:   "
        android:textsize="15dp"
        android:textcolor="#ff8f03"
        android:layout_margintop="15dp">
    </textview>
    <textview
        android:id="@+id/count"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignbottom="@id/price"
        android:layout_torightof="@id/price"
        android:textsize="15dp"
        android:text="1000"
        android:textcolor="#ff8f03">
    </textview>
</relativelayout>
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mainactivity.java

public class mainactivity extends appcompatactivity {
    private listview listview; //listview控件
    //商品名称、价格、图片集合
    private string[] titles={"桌子","苹果","蛋糕","线衣","猕猴桃","围巾"};
    private string[] prices={"1800元","10元/kg","300元","350元","10元/kg","280元"};
    private int[] icons={r.drawable.table,r.drawable.apple,r.drawable.cake,r.drawable.wireclothes,r.drawable.kiwifruit,r.drawable.scarf};

    @override
    protected void oncreate(bundle savedinstancestate) {
        super.oncreate(savedinstancestate);
        setcontentview(r.layout.activity_main);

        listview=findviewbyid(r.id.lv);       //获取listview控件
        malladapter adapter=new malladapter();    //创建一个adapter实例
        listview.setadapter(adapter);    //设置adapter，将适配器指定给listview对象
    }
    //创建一个malladapter类继承自baseadapter类，并重写类中的一些方法
    public class malladapter extends baseadapter {

        @override
        public int getcount() {   //获取item条数
            return titles.length;    //返回listview item条目的总数
        }

        @override
        public object getitem(int position) {
            return null;
        }

        @override
        public long getitemid(int position) {
            return 0;
        }

        @override
                /*
        position:当前的item的位置
        convertview：指定的单元格布局
        parent：用于加载xml布局
         */
        public view getview(int position, view convertview, viewgroup parent) {
            if (convertview==null){
                //通过inflate（）方法加载列表条目的布局文件
                convertview=view.inflate(mainactivity.this,r.layout.listview2,null);
            }
            //获取列表条目上的控件
            textview title=convertview.findviewbyid(r.id.title);
            textview price=convertview.findviewbyid(r.id.count);
            imageview iv=convertview.findviewbyid(r.id.iv);
            //设置界面上的文本图片和数据信息
            title.settext(titles[position]);
            price.settext(prices[position]);
            iv.setbackgroundresource(icons[position]);
            return convertview;
        }
    }
}