仿淘宝商品列表切换

源码:http://download.csdn.net/detail/qq_32890771/9864526

布局文件

<?xml version="1.0" encoding="utf-8"?><FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/activity_main"android:layout_width="match_parent"android:layout_height="match_parent"android:padding="3dp"tools:context="com.example.a3_.MainActivity"><Button    android:id="@+id/change"    android:text="切换布局"    android:textSize="20dp"    android:layout_width="wrap_content"    android:layout_height="wrap_content" /><ListView    android:id="@+id/lv"    android:layout_width="match_parent"    android:layout_height="match_parent"></ListView><GridView    android:id="@+id/gv"    android:numColumns="2"    android:visibility="gone"    android:layout_width="match_parent"    android:layout_height="match_parent"></GridView></FrameLayout>

核心代码

package com.example.a3_;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.Button;import android.widget.GridView;import android.widget.ListView;public class MainActivity extends AppCompatActivity {private ListView lv;private GridView gv;private Button button;//设置默认的显示或隐藏private boolean isLvShow = true;private boolean isGvShow = false;@Overrideprotected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    //初始化控件    lv = (ListView) findViewById(R.id.lv);    gv = (GridView) findViewById(R.id.gv);    button = (Button) findViewById(R.id.change);    //设置适配器    lv.setAdapter(new MyAdapter());    gv.setAdapter(new MyAdapter());    //为按钮设置点击事件    button.setOnClickListener(new View.OnClickListener() {        @Override        public void onClick(View v) {            if (isLvShow){                lv.setVisibility(View.GONE);                gv.setVisibility(View.VISIBLE);            }else {                lv.setVisibility(View.VISIBLE);                gv.setVisibility(View.GONE);            }            //对显示或隐藏进行取反            isLvShow = !isLvShow;            isGvShow = !isGvShow;        }    });}class MyAdapter extends BaseAdapter{    @Override    public int getCount() {        return 20;    }    @Override    public Object getItem(int position) {        return null;    }    @Override    public long getItemId(int position) {        return 0;    }    @Override    public View getView(int position, View convertView, ViewGroup parent) {        //为listview设置布局        if (convertView==null){            convertView = View.inflate(getApplicationContext(),R.layout.item,null);        }        return convertView;    }}}