Android实现美团下拉功能

<?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"
  android:background="#f0f0f0"
  android:orientation="vertical" >

  <framelayout
    android:id="@+id/titlebar_layout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="#5555" >

    <relativelayout
      android:layout_width="match_parent"
      android:layout_height="50dp"
      android:background="#ffffff"
      android:gravity="center_vertical"
      android:orientation="horizontal" >

      <linearlayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignparentleft="true"
        android:layout_centervertical="true"
        android:layout_marginleft="5dp"
        android:gravity="center_vertical" >

        <imageview
          android:layout_width="25dp"
          android:layout_height="25dp"
          android:onclick="back"
          android:src="@mipmap/icon_arrow_green" />

        <textview
          android:id="@+id/supplier_list_title_tv"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_marginleft="5dp"
          android:text="全部"
          android:textcolor="#39ac69"
          android:textsize="18dp" />
      </linearlayout>

      <imageview
        android:id="@+id/supplier_list_cart_iv"
        android:layout_width="25dp"
        android:layout_height="25dp"
        android:layout_alignparentright="true"
        android:layout_centervertical="true"
        android:layout_marginright="15dp"
        android:src="@mipmap/icon_car" />
    </relativelayout>
  </framelayout>

  <view
    android:layout_width="match_parent"
    android:layout_height="1dp"
    android:background="#e2e2e2" />

  <linearlayout
    android:layout_width="match_parent"
    android:layout_height="40dp"
    android:background="#ffffff"
    android:orientation="horizontal" >

    <linearlayout
      android:id="@+id/supplier_list_product"
      android:layout_width="0dp"
      android:layout_height="match_parent"
      android:layout_weight="1"
      android:gravity="center"
      android:orientation="horizontal" >

      <textview
        android:id="@+id/supplier_list_product_tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="全部"
        android:textsize="14dp" />

      <imageview
        android:layout_width="25dp"
        android:layout_height="25dp"
        android:src="@mipmap/icon_arrow_down" />
    </linearlayout>

    <linearlayout
      android:id="@+id/supplier_list_sort"
      android:layout_width="0dp"
      android:layout_height="match_parent"
      android:layout_weight="1"
      android:gravity="center"
      android:orientation="horizontal" >

      <textview
        android:id="@+id/supplier_list_sort_tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="综合排序"
        android:textsize="14dp" />

      <imageview
        android:layout_width="25dp"
        android:layout_height="25dp"
        android:src="@mipmap/icon_arrow_down" />
    </linearlayout>

    <linearlayout
      android:id="@+id/supplier_list_activity"
      android:layout_width="0dp"
      android:layout_height="match_parent"
      android:layout_weight="1"
      android:gravity="center"
      android:orientation="horizontal" >

      <textview
        android:id="@+id/supplier_list_activity_tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="优惠活动"
        android:textsize="14dp" />

      <imageview
        android:layout_width="25dp"
        android:layout_height="25dp"
        android:src="@mipmap/icon_arrow_down" />
    </linearlayout>
  </linearlayout>

  <view
    android:layout_width="match_parent"
    android:layout_height="0.5dp"
    android:background="#e2e2e2" />

  <relativelayout
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <listview
      android:id="@+id/supplier_list_lv"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:layout_margintop="10dp"
      android:cachecolorhint="@android:color/transparent"
      android:divider="#f0f0f0"
      android:dividerheight="10dp"
      android:fadingedge="none"
      android:listselector="#00000000"
      android:scrollbarstyle="outsideoverlay"
      android:scrollingcache="false" />

    <progressbar
      android:id="@+id/progress"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_centerinparent="true"
      android:indeterminatedrawable="@drawable/shape_progress"
      android:indeterminateduration="1000" />
  </relativelayout>

</linearlayout>

<?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="wrap_content"
  android:background="#ffffff"
  android:orientation="vertical" >

  <linearlayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center_vertical"
    android:orientation="horizontal" >

    <textview
      android:id="@+id/listview_popwind_tv"
      android:layout_width="match_parent"
      android:layout_height="45dp"
      android:layout_marginleft="15dp"
      android:layout_marginright="15dp"
      android:gravity="center_vertical"
      android:text="地点"
      android:textcolor="#5a5959"
      android:textsize="18dp" />
  </linearlayout>

  <view
    android:layout_width="match_parent"
    android:layout_height="1dp"
    android:layout_marginleft="15dp"
    android:layout_marginright="15dp"
    android:background="#e2e2e2" />

</linearlayout>

<?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"
  android:background="#5000"
  android:orientation="vertical" >

  <listview
    android:id="@+id/popwin_supplier_list_lv"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:cachecolorhint="@android:color/transparent"
    android:divider="#0000"
    android:dividerheight="0dp"
    android:fadingedge="none"
    android:listselector="#00000000"
    android:scrollbarstyle="outsideoverlay"
    android:scrollbars="none"
    android:scrollingcache="false" />

  <linearlayout
    android:id="@+id/popwin_supplier_list_bottom"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="1"
    android:orientation="vertical" />

</linearlayout>

package com.example.hfs.popwindowmeituan;

import java.util.arraylist;
import java.util.hashmap;
import java.util.list;
import java.util.map;


import android.app.activity;
import android.content.intent;
import android.graphics.color;
import android.graphics.drawable.bitmapdrawable;
import android.os.bundle;
import android.view.view;
import android.view.view.onclicklistener;
import android.widget.adapterview;
import android.widget.imageview;
import android.widget.linearlayout;
import android.widget.listview;
import android.widget.popupwindow;
import android.widget.progressbar;
import android.widget.simpleadapter;
import android.widget.textview;
import android.widget.toast;
import android.widget.adapterview.onitemclicklistener;
import android.widget.popupwindow.ondismisslistener;

public class mainactivity extends activity implements
    onclicklistener {
  private listview listview, poplistview;
  private progressbar progressbar;
  private list<map<string, string>> menudata1, menudata2, menudata3;
  private popupwindow popmenu;
  private simpleadapter menuadapter1, menuadapter2, menuadapter3;

  private linearlayout product, sort, activity;
  private imageview cartiv;
  private textview producttv, sorttv, activitytv, titletv;
  private int green, grey;

  private string currentproduct, currentsort, currentactivity;
  private int menuindex = 0;

  private intent intent;
  @override
  protected void oncreate(bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.activity_supplier_list);
    findview();
    initmenudata();
    initpopmenu();

  }
  private void initmenudata() {
    menudata1 = new arraylist<map<string, string>>();
    string[] menustr1 = new string[] { "全部", "粮油", "衣服", "图书", "电子产品",
        "酒水饮料", "水果" };
    map<string, string> map1;
    for (int i = 0, len = menustr1.length; i < len; ++i) {
      map1 = new hashmap<string, string>();
      map1.put("name", menustr1[i]);
      menudata1.add(map1);
    }

    menudata2 = new arraylist<map<string, string>>();
    string[] menustr2 = new string[] { "综合排序", "配送费最低" };
    map<string, string> map2;
    for (int i = 0, len = menustr2.length; i < len; ++i) {
      map2 = new hashmap<string, string>();
      map2.put("name", menustr2[i]);
      menudata2.add(map2);
    }

    menudata3 = new arraylist<map<string, string>>();
    string[] menustr3 = new string[] { "优惠活动", "特价活动", "免配送费",
        "可在线支付" };
    map<string, string> map3;
    for (int i = 0, len = menustr3.length; i < len; ++i) {
      map3 = new hashmap<string, string>();
      map3.put("name", menustr3[i]);
      menudata3.add(map3);
    }
  }
  @override
  public void onclick(view v) {
    // todo auto-generated method stub
    switch (v.getid()) {
      case r.id.supplier_list_product:
        producttv.settextcolor(color.parsecolor("#39ac69"));
        poplistview.setadapter(menuadapter1);
        popmenu.showasdropdown(product, 0, 2);
        menuindex = 0;
        break;
      case r.id.supplier_list_sort:
        sorttv.settextcolor(color.parsecolor("#39ac69"));
        poplistview.setadapter(menuadapter2);
        popmenu.showasdropdown(product, 0, 2);
        menuindex = 1;
        break;
      case r.id.supplier_list_activity:
        activitytv.settextcolor(color.parsecolor("#39ac69"));
        poplistview.setadapter(menuadapter3);
        popmenu.showasdropdown(product, 0, 2);
        menuindex = 2;
        break;

    }
  }
  protected void findview() {
    listview = (listview) findviewbyid(r.id.supplier_list_lv);
    product = (linearlayout) findviewbyid(r.id.supplier_list_product);
    sort = (linearlayout) findviewbyid(r.id.supplier_list_sort);
    activity = (linearlayout) findviewbyid(r.id.supplier_list_activity);
    producttv = (textview) findviewbyid(r.id.supplier_list_product_tv);
    sorttv = (textview) findviewbyid(r.id.supplier_list_sort_tv);
    activitytv = (textview) findviewbyid(r.id.supplier_list_activity_tv);
    titletv = (textview) findviewbyid(r.id.supplier_list_title_tv);
    cartiv = (imageview) findviewbyid(r.id.supplier_list_cart_iv);
    progressbar = (progressbar) findviewbyid(r.id.progress);

    product.setonclicklistener(this);
    sort.setonclicklistener(this);
    activity.setonclicklistener(this);
    cartiv.setonclicklistener(this);
  }
  private void initpopmenu() {
    initmenudata();
    view contentview = view.inflate(this, r.layout.popwin_supplier_list,
        null);
    popmenu = new popupwindow(contentview,
        linearlayout.layoutparams.match_parent,
        linearlayout.layoutparams.match_parent);
    popmenu.setoutsidetouchable(true);
    popmenu.setbackgrounddrawable(new bitmapdrawable());
    popmenu.setfocusable(true);
    popmenu.setanimationstyle(r.style.popwin_anim_style);
    popmenu.setondismisslistener(new ondismisslistener() {
      public void ondismiss() {
        producttv.settextcolor(color.parsecolor("#5a5959"));
        sorttv.settextcolor(color.parsecolor("#5a5959"));
        activitytv.settextcolor(color.parsecolor("#5a5959"));
      }
    });

    poplistview = (listview) contentview
        .findviewbyid(r.id.popwin_supplier_list_lv);
    contentview.findviewbyid(r.id.popwin_supplier_list_bottom)
        .setonclicklistener(new onclicklistener() {
          public void onclick(view arg0) {
            popmenu.dismiss();
          }
        });
    menuadapter1 = new simpleadapter(this, menudata1,
        r.layout.item_listview_popwin, new string[] { "name" },
        new int[] { r.id.listview_popwind_tv });
    menuadapter2 = new simpleadapter(this, menudata2,
        r.layout.item_listview_popwin, new string[] { "name" },
        new int[] { r.id.listview_popwind_tv });
    menuadapter3 = new simpleadapter(this, menudata3,
        r.layout.item_listview_popwin, new string[] { "name" },
        new int[] { r.id.listview_popwind_tv });

    poplistview.setonitemclicklistener(new onitemclicklistener() {
      public void onitemclick(adapterview<?> arg0, view arg1, int pos,
                  long arg3) {
        popmenu.dismiss();
        if (menuindex == 0) {
          currentproduct = menudata1.get(pos).get("name");
          titletv.settext(currentproduct);
          producttv.settext(currentproduct);
          toast.maketext(mainactivity.this, currentproduct, toast.length_short).show();
        } else if (menuindex == 1) {
          currentsort = menudata2.get(pos).get("name");
          titletv.settext(currentsort);
          sorttv.settext(currentsort);
          toast.maketext(mainactivity.this, currentsort, toast.length_short).show();
        } else {
          currentactivity = menudata3.get(pos).get("name");
          titletv.settext(currentactivity);
          activitytv.settext(currentactivity);
          toast.maketext(mainactivity.this, currentactivity, toast.length_short).show();
        }
      }
    });
  }
}