仿餓了點餐介面2個ListView聯動，介面listview聯動

仿餓了點餐介面2個ListView聯動，介面listview聯動

是

是仿餓了的點餐介面

1.點擊左側的ListView，通過在在適配器中設定Item來改變顏色，再通過notifyDataSetInvalidated來重新整理並用lv_home.setSelection(showTitle.get(arg2));來關聯右側的

2.右側的主要是重寫下onScroll的方法；來改變左側ListView的顏色及背景

不過程式中還有個問題，望大神解答就是我右側的ListView下拉時，上面的TextView能改變；但是上拉時，TextView的不能及時改變應為滑動時我只拿了firstVisibleItem來判斷的

Demo的串連：http://download.csdn.net/detail/qq_29774291/9634011

如下是主程式碼

package com.item.jiejie;import java.util.ArrayList;import java.util.List;import com.item.jiejie.adapter.HomeAdapter;import com.item.jiejie.adapter.MenuAdapter;import com.item.jiejie.entity.FoodData;import android.widget.AbsListView.OnScrollListener;import android.os.Bundle;import android.app.Activity;import android.text.TextUtils;import android.util.Log;import android.view.View;import android.view.Window;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.AbsListView;import android.widget.ListView;import android.widget.TextView;/** * 防餓了的ListView聯動的Demo * 有BUG * @author Administrator * */public class MainActivity extends Activity {    /**左側菜單*/    private ListView lv_menu;    /**右側主菜*/    private ListView lv_home;    private TextView tv_title;        private MenuAdapter menuAdapter;    private HomeAdapter homeAdapter;    private int currentItem;    /**     * 資料來源     */    private List<FoodData> foodDatas;    private String data[] = {"熱銷榜","新品套餐","便當套餐","單點菜品","飲料類","水果罐頭","米飯"};    /**     * 裡面存放右邊ListView需要顯示標題的條目position     */    private ArrayList<Integer> showTitle;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        requestWindowFeature(Window.FEATURE_NO_TITLE);        setContentView(R.layout.activity_main);        setView();        setData();    }    private void setView() {        // TODO Auto-generated method stub        lv_menu = (ListView)findViewById(R.id.lv_menu);        tv_title = (TextView)findViewById(R.id.tv_titile);        lv_home = (ListView)findViewById(R.id.lv_home);                foodDatas = new ArrayList<FoodData>();        for(int i =0;i < data.length; i++){            foodDatas.add(new FoodData(i, data[0] + i, data[0]));        }        for(int i =0;i < data.length -1; i++){            foodDatas.add(new FoodData(i, data[1] + i, data[1]));        }        for(int i =0;i < data.length-2; i++){            foodDatas.add(new FoodData(i, data[2] + i, data[2]));        }        for(int i =0;i < data.length-3; i++){            foodDatas.add(new FoodData(i, data[3] + i, data[3]));        }        for(int i =0;i < data.length-4; i++){            foodDatas.add(new FoodData(i, data[4] + i, data[4]));        }        for(int i =0;i < data.length-3; i++){            foodDatas.add(new FoodData(i, data[5] + i, data[5]));        }        for(int i =0;i < 6; i++){            foodDatas.add(new FoodData(i, data[6] + i, data[6]));        }        showTitle = new ArrayList<Integer>();        for(int i = 0; i < foodDatas.size(); i++){            if( i ==0){                showTitle.add(i );                System.out.println(i + "dd");            }else if (!TextUtils.equals(foodDatas.get(i).getTitle(), foodDatas.get(i - 1).getTitle())) {                showTitle.add(i );                System.out.println(i + "dd");            }        }    }    private void setData() {        // TODO Auto-generated method stub        tv_title.setText(foodDatas.get(0).getTitle());        menuAdapter = new MenuAdapter(this);        homeAdapter = new HomeAdapter(this, foodDatas);        lv_menu.setAdapter(menuAdapter);        lv_home.setAdapter(homeAdapter);        lv_menu.setOnItemClickListener(new OnItemClickListener() {            @Override            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,                    long arg3) {                // TODO Auto-generated method stub                menuAdapter.setSelectItem(arg2);                menuAdapter.notifyDataSetInvalidated();                lv_home.setSelection(showTitle.get(arg2));                                                tv_title.setText(data[arg2]);                            }        });        lv_home.setOnScrollListener(new OnScrollListener() {            private int scrollState;                        @Override            public void onScrollStateChanged(AbsListView view, int scrollState) {                // TODO Auto-generated method stub                //System.out.println("onScrollStateChanged" + "   scrollState" + scrollState);                this.scrollState = scrollState;            }                        @Override            public void onScroll(AbsListView view, int firstVisibleItem,                    int visibleItemCount, int totalItemCount) {                // TODO Auto-generated method stub                if (scrollState == AbsListView.OnScrollListener.SCROLL_STATE_IDLE) {                      return;                  }                 Log.d("jiejie", "onScroll" + "  firstVisibleItem" + firstVisibleItem                        +"  visibleItemCount" + visibleItemCount + "  totalItemCount" + totalItemCount);                int current =showTitle.indexOf(firstVisibleItem );                System.out.println(current + "dd"  +  firstVisibleItem);//                lv_home.setSelection(current);                if(currentItem != current && current >=0){                    currentItem = current;                    tv_title.setText(data[current]);                    menuAdapter.setSelectItem(currentItem);                    menuAdapter.notifyDataSetInvalidated();                }            }        });    }}

左側ListView的適配器代碼

package com.item.jiejie.adapter;import com.item.jiejie.R;import android.content.Context;import android.graphics.Color;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.TextView;/** * 左側菜單ListView的適配器 * @author Administrator * */public class MenuAdapter extends BaseAdapter{        private Context context;    private int selectItem = 0;    private String data[] = {"熱銷榜","新品套餐","便當套餐","單點菜品","飲料類","水果罐頭","米飯"};        public MenuAdapter(Context context) {        this.context = context;    }        public int getSelectItem() {        return selectItem;    }    public void setSelectItem(int selectItem) {        this.selectItem = selectItem;    }    @Override    public int getCount() {        // TODO Auto-generated method stub        return data.length;    }    @Override    public Object getItem(int arg0) {        // TODO Auto-generated method stub        return null;    }    @Override    public long getItemId(int arg0) {        // TODO Auto-generated method stub        return 0;    }    @Override    public View getView(int arg0, View arg1, ViewGroup arg2) {        // TODO Auto-generated method stub        ViewHolder holder = null;        if(arg1 == null) {            holder = new ViewHolder();            arg1 = View.inflate(context, R.layout.item_menu, null);            holder.tv_name = (TextView)arg1.findViewById(R.id.item_name);            arg1.setTag(holder);        }else {            holder = (ViewHolder)arg1.getTag();        }        if(arg0 == selectItem){            holder.tv_name.setBackgroundColor(Color.WHITE);            holder.tv_name.setTextColor(context.getResources().getColor(R.color.text_green));        }else {            holder.tv_name.setBackgroundColor(context.getResources().getColor(R.color.ll_coachback));            holder.tv_name.setTextColor(context.getResources().getColor(R.color.text_deep));        }        holder.tv_name.setText(data[arg0]);        return arg1;    }    static class ViewHolder{        private TextView tv_name;    }}

右側的適配器代碼

package com.item.jiejie.adapter;import java.util.List;import com.item.jiejie.R;import com.item.jiejie.entity.FoodData;import android.content.Context;import android.text.TextUtils;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.TextView;/** * 右側主介面ListView的適配器 * * @author Administrator * */public class HomeAdapter extends BaseAdapter { private Context context; private List<FoodData> foodDatas; public HomeAdapter(Context context, List<FoodData> foodDatas) { this.context = context; this.foodDatas = foodDatas; } @Override public int getCount() { // TODO Auto-generated method stub if(foodDatas!=null){ return foodDatas.size(); }else { return 10; } } @Override public Object getItem(int arg0) { // TODO Auto-generated method stub return null; } @Override public long getItemId(int arg0) { // TODO Auto-generated method stub return 0; } @Override public View getView(int arg0, View arg1, ViewGroup arg2) { // TODO Auto-generated method stub ViewHold holder = null; if(arg1 == null){ arg1 = View.inflate(context, R.layout.item_home, null); holder = new ViewHold(); holder.tv_title = (TextView)arg1.findViewById(R.id.item_home_title); holder.tv_name = (TextView)arg1.findViewById(R.id.item_home_name); arg1.setTag(holder); }else { holder = (ViewHold)arg1.getTag(); } holder.tv_name.setText(foodDatas.get(arg0).getName()); holder.tv_title.setText(foodDatas.get(arg0).getTitle()); if(arg0 == 0){ holder.tv_title.setVisibility(View.VISIBLE); }else if (!TextUtils.equals(foodDatas.get(arg0).getTitle(), foodDatas.get(arg0 -1).getTitle())) { holder.tv_title.setVisibility(View.VISIBLE); }else { holder.tv_title.setVisibility(View.GONE); } return arg1; } private static class ViewHold{ private TextView tv_title; private TextView tv_name; }}View Code