Android studio实战演练美团外卖菜单美团外卖菜单怎么做?

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码海航行侠 2023-11-20 10:37:23

文章标签 android List ide 文章分类 Android 移动开发

仿美团外卖菜单界面的实现

布局文件

总布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:paddingBottom="@dimen/activity_vertical_margin"
android:orientation="horizontal"
tools:context="com.example.a1_.activity.MainActivity">

<ListView
    android:id="@+id/lv_left"
    android:layout_width="100dp"
    android:layout_height="match_parent">
</ListView>

<se.emilsjolander.stickylistheaders.StickyListHeadersListView
    android:id="@+id/lv_right"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
</se.emilsjolander.stickylistheaders.StickyListHeadersListView>

</LinearLayout>

左侧布局

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

<TextView
    android:layout_margin="10dp"
    android:id="@+id/tv_title"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:text="菜单类别"
    android:textSize="18sp" />

</RelativeLayout>

右侧布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="65dp"
android:orientation="vertical">

<ImageView
    android:src="@mipmap/ic_launcher"
    android:layout_margin="4dp"
    android:id="@+id/iv"
    android:layout_width="50dp"
    android:layout_height="50dp" />

<LinearLayout
    android:layout_toRightOf="@id/iv"
    android:orientation="vertical"
    android:layout_margin="4dp"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:text="洋芋粉炒腊肉"
        android:textSize="20sp"
        android:id="@+id/tv_right_title1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/tv_right_title2"
        android:text="洋芋粉炒腊肉"
        android:textSize="16sp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/tv_right_count"
        android:text="月销售54份"
        android:textSize="18sp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

</RelativeLayout>

适配器

左侧适配器

package com.example.a1_.adapter;

import android.graphics.Color;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

import com.example.a1_.Bean.LeftBean;
import com.example.a1_.R;

import java.util.List;

/**
 * Created by Administrator on 2017.05.27.0027.
 */

public class LeftAdapter extends BaseAdapter {

private List<LeftBean> mList;
private int currentLeftItem = 0;
//创建一个构造方法

public LeftAdapter(List<LeftBean> mList) {
    this.mList = mList;
}

@Override
public int getCount() {
    return mList.size();
}

@Override
public LeftBean getItem(int position) {
    return mList.get(position);
}

@Override
public long getItemId(int position) {
    return position;
}

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

    ViewHolder viewHolder = null;
    if (convertView==null){
        convertView = View.inflate(parent.getContext(), R.layout.left_item,null);

        //创建viewHolder对象
        viewHolder = new ViewHolder();
        viewHolder.tv_title = (TextView) convertView.findViewById(R.id.tv_title);
        //让viewholder挂在convertview上面一起复用
        convertView.setTag(viewHolder);
    }else {
        //当convertView不为空时,吧viewholder取出来
        viewHolder = (ViewHolder) convertView.getTag();
    }

    //获取对应条目的内容
    LeftBean leftBean = getItem(position);
    //把对应条目的内容设置在控件上
    viewHolder.tv_title.setText(leftBean.title);


    //给左侧条目设置颜色
    if (currentLeftItem ==position){
        viewHolder.tv_title.setTextColor(Color.RED);
    }
    return convertView;
}

public void setCurrentSelect(int currentLeftItem){
    this.currentLeftItem = currentLeftItem;
}

//创建一个viewholder,用来复用对象
class ViewHolder{
    TextView tv_title;
}
}

右侧适配器

package com.example.a1_.adapter;

import android.content.Context;
import android.graphics.Color;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;

import com.example.a1_.Bean.LeftBean;
import com.example.a1_.Bean.RightBean;
import com.example.a1_.R;

import java.util.List;
import java.util.Random;

import se.emilsjolander.stickylistheaders.StickyListHeadersAdapter;

/**
 * Created by Administrator on 2017.05.27.0027.
 */

public class RightAdapter extends BaseAdapter implements StickyListHeadersAdapter {
private List<LeftBean> mLeft;
private List<RightBean> mRight;
private Context context;

public RightAdapter(List<LeftBean> mLeft, List<RightBean> mRight, Context context) {
    this.mLeft = mLeft;
    this.mRight = mRight;
    this.context = context;
}

@Override
public View getHeaderView(int position, View convertView, ViewGroup parent) {
    TextView tv = new TextView(context);
    tv.setTextColor(Color.RED);
    tv.setTextSize(18);
    tv.setText(mRight.get(position).type);
    return tv;
}

@Override
public long getHeaderId(int position) {
    return mRight.get(position).typeId;
}

@Override
public int getCount() {
    return mRight.size();
}

@Override
public RightBean getItem(int position) {
    return mRight.get(position);
}

@Override
public long getItemId(int position) {
    return position;
}

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

    ViewHolder viewHolder = null;
    if (convertView==null){
        convertView = View.inflate(context, R.layout.right_item,null);
        viewHolder = new ViewHolder();
        viewHolder.title1 = (TextView) convertView.findViewById(R.id.tv_right_title1);
        viewHolder.title2 = (TextView) convertView.findViewById(R.id.tv_right_title2);
        viewHolder.count = (TextView) convertView.findViewById(R.id.tv_right_count);

        convertView.setTag(viewHolder);
    }else {
        viewHolder = (ViewHolder) convertView.getTag();
    }
    RightBean rightBean = mRight.get(position);
    viewHolder.title1.setText(rightBean.biaoti);
    viewHolder.title2.setText(rightBean.biaoti);
    //使用Random获取随机数
    Random random = new Random();
    int i = random.nextInt(100);
    viewHolder.count.setText("月销量"+i+"份");
    return convertView;
}

static class ViewHolder{
    TextView title1;
    TextView title2;
    TextView count;
}
}

javabean文件

左侧

package com.example.a1_.Bean;


public class LeftBean {
public String title;
public int type;

}

右侧

package com.example.a1_.Bean;

import android.R.string;

public class RightBean {

public String biaoti;
public String type;
public int typeId;

}

数据源

package com.example.a1_.data;

import com.example.a1_.Bean.LeftBean;
import com.example.a1_.Bean.RightBean;

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

/**
 * Created by wangcaisheng on 2017/5/27.
 */

public class Data {

private static String[] leftData = new String[]{"13.9特价套餐","粗粮主食","佐餐小吃","用心营养套餐(不含主食)","三杯鸡双拼尊享套餐","带鱼双拼尊享套餐","红烧肉双拼尊享套餐"};
private static String[] rightData0 = new String[]{"洋芋粉炒腊肉","土鸡炖香菇","新疆大盘辣子土鸡","清炖土鸡块","农家蒸碗  ","香辣野猪肉","香辣薯条大虾","麻辣猪血"};
private static String[] rightData1 = new String[]{"商芝扣肉","羊肉萝卜","干烧鱼  ","干煸野猪肉 ","排骨火锅","土鸡火锅","牛肉火锅","狗肉火锅 "};
private static String[] rightData2 = new String[]{"虎皮辣子炒咸肉","重庆飘香水煮鱼","红烧土鸡块","干煸辣子土鸡","清炖全鸡 "};
private static String[] rightData3 = new String[]{"洋芋粉炒腊肉","土鸡炖香菇","新疆大盘辣子土鸡","清炖土鸡块","农家蒸碗  ","香辣野猪肉","香辣薯条大虾","麻辣猪血"};
private static String[] rightData4 = new String[]{"洋芋粉炒腊肉","土鸡炖香菇","新疆大盘辣子土鸡","清炖土鸡块","农家蒸碗  ","香辣野猪肉","香辣薯条大虾","麻辣猪血"};
private static String[] rightData5 = new String[]{"洋芋粉炒腊肉","土鸡炖香菇","新疆大盘辣子土鸡","清炖土鸡块","农家蒸碗  ","香辣野猪肉","香辣薯条大虾","麻辣猪血"};
private static String[] rightData6 = new String[]{"洋芋粉炒腊肉","土鸡炖香菇","新疆大盘辣子土鸡","清炖土鸡块","农家蒸碗  ","香辣野猪肉","香辣薯条大虾","麻辣猪血"};

public static List<LeftBean> getLeftData(){
    List<LeftBean> list = new ArrayList<LeftBean>();
    for (int i = 0; i < leftData.length; i++) {
        LeftBean bean = new LeftBean();
        bean.title = leftData[i];
        bean.type = i;
        list.add(bean);
    }

    return list;

}

public static List<RightBean> getRightData(List<LeftBean> list){
    List<RightBean> rightList = new ArrayList<RightBean>();
    for (int i = 0; i < list.size(); i++) {
        LeftBean leftBean = list.get(i);
        int mType = leftBean.type;
        switch (mType) {
            case 0:
                rightList = getRightList(rightData0, leftBean, mType, rightList);
                break;
            case 1:
                rightList = getRightList(rightData1, leftBean, mType, rightList);
                break;
            case 2:
                rightList = getRightList(rightData2, leftBean, mType, rightList);
                break;
            case 3:
                rightList = getRightList(rightData3, leftBean, mType, rightList);
                break;
            case 4:
                rightList = getRightList(rightData4, leftBean, mType, rightList);
                break;
            case 5:
                rightList = getRightList(rightData5, leftBean, mType, rightList);
                break;
            case 6:
                rightList = getRightList(rightData6, leftBean, mType, rightList);
                break;
        }


    }


    return rightList;

}


private static List<RightBean> getRightList(String[] arr, LeftBean leftBean, int mType, List<RightBean> rightList){
    for (int j = 0; j < arr.length; j++) {
        RightBean bean = new RightBean();
        bean.type = leftBean.title;
        bean.biaoti = arr[j];
        bean.typeId = mType;
        rightList.add(bean);
    }
    return rightList;
}
}

核心代码

package com.example.a1_.activity;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;

import com.example.a1_.Bean.LeftBean;
import com.example.a1_.Bean.RightBean;
import com.example.a1_.R;
import com.example.a1_.adapter.LeftAdapter;
import com.example.a1_.adapter.RightAdapter;
import com.example.a1_.data.Data;

import java.util.List;

import se.emilsjolander.stickylistheaders.StickyListHeadersListView;

public class MainActivity extends AppCompatActivity {

private ListView lv_left;
private StickyListHeadersListView lv_right;
private int currentLeftItem;

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


}

//初始化控件
private void initView() {
    //初始化控件
    lv_left = (ListView) findViewById(R.id.lv_left);
    lv_right = (StickyListHeadersListView) findViewById(R.id.lv_right);
}

//设置适配器
private void initData() {
    //创建适配器
    final LeftAdapter leftAdapter = new LeftAdapter(Data.getLeftData());
    //获取左侧数据
    final List<LeftBean> leftData = Data.getLeftData();
    //获取右侧数据
    final List<RightBean> rightData = Data.getRightData(leftData);
    RightAdapter rightAdapter = new RightAdapter(leftData, rightData, this);

    //为左侧布局设置适配器
    lv_left.setAdapter(leftAdapter);
    lv_right.setAdapter(rightAdapter);


    //为左侧条目设置点击事件
    lv_left.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            //当左侧条目被点击时,记录下被点击条目的type
            int type = leftData.get(position).type;
            //遍历右侧条目,并获取右侧条目的typeId,与刚刚获取的type对比,是否一致
            for (int i = 0; i < rightData.size(); i++) {
                if (type == rightData.get(i).typeId) {
                    //如果找到对应的条目,那就将右侧条目滚动至对应条目,并跳出循环
                    lv_right.smoothScrollToPosition(i);
                    currentLeftItem = i;
                    //设置当前被选中的左侧条目
                    leftAdapter.setCurrentSelect(currentLeftItem);
                    //刷新数据适配器
                    leftAdapter.notifyDataSetChanged();
                    break;
                }
            }

//                Toast.makeText(MainActivity.this, "您选中了"+leftData.get(position).title, Toast.LENGTH_SHORT).show();
        }
    });

    //为右侧条目设置点击事件
            lv_right.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//                Toast.makeText(MainActivity.this, "右侧条目被点击了"+position, Toast.LENGTH_SHORT).show();

            //当右侧条目被点击时,获取被点击条目的typeId
            int typeId = rightData.get(position).typeId;
            //遍历左侧条目
            for (int i = 0; i < leftData.size(); i++) {
                //获取左侧条目的type,与右侧条目的typeId对比是否一致
                if (typeId == leftData.get(i).type) {
                    //说明找到了对应条目,跳出循环,设置当前被选中的条目
                    currentLeftItem = i;
                    //设置当前被选中的左侧条目
                    leftAdapter.setCurrentSelect(currentLeftItem);
                    //刷新数据适配器
                    leftAdapter.notifyDataSetChanged();
                    break;
                }

            }
        }
    });
}
}

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