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android-wheel控件实现三级联动效果

2019年07月24日 | 移动技术网移动技术 | 我要评论

本文实例为大家分享了android wheel省市县三级联动效果，供大家参考，具体内容如下

在github上面有一个叫做 android-wheel 的开源控件, 代码地址：

源码下载地址：

主界面布局

activity_main.xml

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" 
  xmlns:tools="http://schemas.android.com/tools" 
  android:layout_width="match_parent" 
  android:layout_height="wrap_content" 
  android:background="#e9e9e9" 
  android:orientation="vertical" > 
 
  <linearlayout 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:orientation="horizontal" > 
 
    <kankan.wheel.widget.wheelview 
      android:id="@+id/id_province" 
      android:layout_width="0dp" 
      android:layout_height="wrap_content" 
      android:layout_weight="1" > 
    </kankan.wheel.widget.wheelview> 
 
    <kankan.wheel.widget.wheelview 
      android:id="@+id/id_city" 
      android:layout_width="0dp" 
      android:layout_height="wrap_content" 
      android:layout_weight="1" > 
    </kankan.wheel.widget.wheelview> 
 
    <kankan.wheel.widget.wheelview 
      android:id="@+id/id_district" 
      android:layout_width="0dp" 
      android:layout_height="wrap_content" 
      android:layout_weight="1" > 
    </kankan.wheel.widget.wheelview> 
  </linearlayout> 
 
  <button 
    android:id="@+id/btn_confirm" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:layout_margintop="10dip" 
    android:gravity="center" 
    android:text="确定" 
    android:textcolor="#000000" /> 
 
</linearlayout>

assets资源文件下--province_data.xml（一部分）

<root> 
 <province name="安徽省"> 
  <city name="安庆市"> 
   <district name="枞阳县" zipcode="246000" /> 
   <district name="大观区" zipcode="246000" /> 
   <district name="怀宁县" zipcode="246000" /> 
   <district name="潜山县" zipcode="246000" /> 
   <district name="宿松县" zipcode="246000" /> 
   <district name="太湖县" zipcode="246000" /> 
   <district name="桐城市" zipcode="246000" /> 
   <district name="望江县" zipcode="246000" /> 
   <district name="宜秀区" zipcode="246000" /> 
   <district name="迎江区" zipcode="246000" /> 
   <district name="岳西县" zipcode="246000" /> 
   <district name="其他" zipcode="246000" /> 
  </city>

先看省份、城市、县乡的bean类
provincemodel

package com.mrwujay.cascade.model; 
 
import java.util.list; 
 
public class provincemodel { 
  private string name; 
  private list<citymodel> citylist; 
   
  public provincemodel() { 
    super(); 
  } 
 
  public provincemodel(string name, list<citymodel> citylist) { 
    super(); 
    this.name = name; 
    this.citylist = citylist; 
  } 
 
  public string getname() { 
    return name; 
  } 
 
  public void setname(string name) { 
    this.name = name; 
  } 
 
  public list<citymodel> getcitylist() { 
    return citylist; 
  } 
 
  public void setcitylist(list<citymodel> citylist) { 
    this.citylist = citylist; 
  } 
 
  @override 
  public string tostring() { 
    return "provincemodel [name=" + name + ", citylist=" + citylist + "]"; 
  } 
   
}

package com.mrwujay.cascade.model; 
 
import java.util.list; 
 
public class citymodel { 
  private string name; 
  private list<districtmodel> districtlist; 
   
  public citymodel() { 
    super(); 
  } 
 
  public citymodel(string name, list<districtmodel> districtlist) { 
    super(); 
    this.name = name; 
    this.districtlist = districtlist; 
  } 
 
  public string getname() { 
    return name; 
  } 
 
  public void setname(string name) { 
    this.name = name; 
  } 
 
  public list<districtmodel> getdistrictlist() { 
    return districtlist; 
  } 
 
  public void setdistrictlist(list<districtmodel> districtlist) { 
    this.districtlist = districtlist; 
  } 
 
  @override 
  public string tostring() { 
    return "citymodel [name=" + name + ", districtlist=" + districtlist 
        + "]"; 
  } 
   
}

districtmodel

package com.mrwujay.cascade.model; 
 
public class districtmodel { 
  private string name; 
  private string zipcode; 
   
  public districtmodel() { 
    super(); 
  } 
 
  public districtmodel(string name, string zipcode) { 
    super(); 
    this.name = name; 
    this.zipcode = zipcode; 
  } 
 
  public string getname() { 
    return name; 
  } 
 
  public void setname(string name) { 
    this.name = name; 
  } 
 
  public string getzipcode() { 
    return zipcode; 
  } 
 
  public void setzipcode(string zipcode) { 
    this.zipcode = zipcode; 
  } 
 
  @override 
  public string tostring() { 
    return "districtmodel [name=" + name + ", zipcode=" + zipcode + "]"; 
  } 
 
}

看自定义的xmlparserhandler

package com.mrwujay.cascade.service; 
 
import java.util.arraylist; 
import java.util.list; 
import org.xml.sax.attributes; 
import org.xml.sax.saxexception; 
import org.xml.sax.helpers.defaulthandler; 
 
import com.mrwujay.cascade.model.citymodel; 
import com.mrwujay.cascade.model.districtmodel; 
import com.mrwujay.cascade.model.provincemodel; 
 
public class xmlparserhandler extends defaulthandler { 
 
  /** 
   * 存储所有的解析对象 
   */ 
  private list<provincemodel> provincelist = new arraylist<provincemodel>(); 
 
  public xmlparserhandler() { 
 
  } 
 
  /** 
   * 对外暴露的方法 
   */ 
  public list<provincemodel> getdatalist() { 
    return provincelist; 
  } 
 
  @override 
  public void startdocument() throws saxexception { 
    // 当读到第一个开始标签的时候，会触发这个方法 
  } 
 
  provincemodel provincemodel = new provincemodel(); 
  citymodel citymodel = new citymodel(); 
  districtmodel districtmodel = new districtmodel(); 
/** 
 *  <province name="安徽省"> 
  <city name="安庆市"> 
   <district name="枞阳县" zipcode="246000" /> 
   <district name="大观区" zipcode="246000" /> 
   <district name="怀宁县" zipcode="246000" /> 
   <district name="潜山县" zipcode="246000" /> 
   <district name="宿松县" zipcode="246000" /> 
   <district name="太湖县" zipcode="246000" /> 
   <district name="桐城市" zipcode="246000" /> 
   <district name="望江县" zipcode="246000" /> 
   <district name="宜秀区" zipcode="246000" /> 
   <district name="迎江区" zipcode="246000" /> 
   <district name="岳西县" zipcode="246000" /> 
   <district name="其他" zipcode="246000" /> 
  </city> 
 */ 
  @override 
  public void startelement(string uri, string localname, string qname, 
      attributes attributes) throws saxexception { 
    // 当遇到开始标记的时候，调用这个方法 
    if (qname.equals("province")) { 
      provincemodel = new provincemodel(); 
      provincemodel.setname(attributes.getvalue(0)); 
      provincemodel.setcitylist(new arraylist<citymodel>()); 
    } else if (qname.equals("city")) { 
      citymodel = new citymodel(); 
      citymodel.setname(attributes.getvalue(0)); 
      citymodel.setdistrictlist(new arraylist<districtmodel>()); 
    } else if (qname.equals("district")) { 
      districtmodel = new districtmodel(); 
      districtmodel.setname(attributes.getvalue(0)); 
      districtmodel.setzipcode(attributes.getvalue(1)); 
    } 
  } 
 
  @override 
  public void endelement(string uri, string localname, string qname) 
      throws saxexception { 
    // 遇到结束标记的时候，会调用这个方法 
    if (qname.equals("district")) { 
      citymodel.getdistrictlist().add(districtmodel); 
    } else if (qname.equals("city")) { 
      provincemodel.getcitylist().add(citymodel); 
    } else if (qname.equals("province")) { 
      provincelist.add(provincemodel); 
    } 
  } 
 
  @override 
  public void characters(char[] ch, int start, int length) 
      throws saxexception { 
  } 
 
}

接下来看基类baseactivity

package com.mrwujay.cascade.activity; 
 
import java.io.inputstream; 
import java.util.hashmap; 
import java.util.list; 
import java.util.map; 
import javax.xml.parsers.saxparser; 
import javax.xml.parsers.saxparserfactory; 
import android.app.activity; 
import android.content.res.assetmanager; 
 
import com.mrwujay.cascade.model.citymodel; 
import com.mrwujay.cascade.model.districtmodel; 
import com.mrwujay.cascade.model.provincemodel; 
import com.mrwujay.cascade.service.xmlparserhandler; 
 
public class baseactivity extends activity { 
 
  /** 
   * 所有省 
   */ 
  protected string[] mprovincedatas; 
  /** 
   * key - 省 value - 市 
   */ 
  protected map<string, string[]> mcitisdatasmap = new hashmap<string, string[]>(); 
  /** 
   * key - 市 values - 区 
   */ 
  protected map<string, string[]> mdistrictdatasmap = new hashmap<string, string[]>(); 
 
  /** 
   * key - 区 values - 邮编 
   */ 
  protected map<string, string> mzipcodedatasmap = new hashmap<string, string>(); 
 
  /** 
   * 当前省的名称 
   */ 
  protected string mcurrentprovicename; 
  /** 
   * 当前市的名称 
   */ 
  protected string mcurrentcityname; 
  /** 
   * 当前区的名称 
   */ 
  protected string mcurrentdistrictname = ""; 
 
  /** 
   * 当前区的邮政编码 
   */ 
  protected string mcurrentzipcode = ""; 
 
  /** 
   * 解析省市区的xml数据 
   */ 
 
  protected void initprovincedatas() { 
    //省份集合列表 
    list<provincemodel> provincelist = null; 
    //获取资源 
    assetmanager asset = getassets(); 
    try { 
      //获取输入流 
      inputstream input = asset.open("province_data.xml"); 
      // 创建一个解析xml的工厂对象 
      saxparserfactory spf = saxparserfactory.newinstance(); 
      // 解析xml 
      saxparser parser = spf.newsaxparser(); 
      //解析工具 
      xmlparserhandler handler = new xmlparserhandler(); 
      //进行解析 
      parser.parse(input, handler); 
      input.close(); 
      // 获取解析出来的数据 
      provincelist = handler.getdatalist(); 
      // */ 初始化默认选中的省、市、区 
      if (provincelist != null && !provincelist.isempty()) { 
        //获取第一个省份 
        mcurrentprovicename = provincelist.get(0).getname(); 
        list<citymodel> citylist = provincelist.get(0).getcitylist(); 
        if (citylist != null && !citylist.isempty()) { 
          //获取第一个省份的第一个城市名 
          mcurrentcityname = citylist.get(0).getname(); 
          list<districtmodel> districtlist = citylist.get(0) 
              .getdistrictlist(); 
          //获取第一个省份的第一个城市的第一个县名称 
          mcurrentdistrictname = districtlist.get(0).getname(); 
          mcurrentzipcode = districtlist.get(0).getzipcode(); 
        } 
      } 
      // */ 
      mprovincedatas = new string[provincelist.size()]; 
      for (int i = 0; i < provincelist.size(); i++) { 
        // 遍历所有省的数据 
        mprovincedatas[i] = provincelist.get(i).getname(); 
         
        list<citymodel> citylist = provincelist.get(i).getcitylist(); 
        string[] citynames = new string[citylist.size()]; 
        for (int j = 0; j < citylist.size(); j++) { 
          // 遍历省下面的所有市的数据 
          citynames[j] = citylist.get(j).getname(); 
          list<districtmodel> districtlist = citylist.get(j) 
              .getdistrictlist(); 
          string[] distrinctnamearray = new string[districtlist 
              .size()]; 
          districtmodel[] distrinctarray = new districtmodel[districtlist 
              .size()]; 
          for (int k = 0; k < districtlist.size(); k++) { 
            // 遍历市下面所有区/县的数据 
            districtmodel districtmodel = new districtmodel( 
                districtlist.get(k).getname(), districtlist 
                    .get(k).getzipcode()); 
            // 区/县对于的邮编，保存到mzipcodedatasmap 
            mzipcodedatasmap.put(districtlist.get(k).getname(), 
                districtlist.get(k).getzipcode()); 
            distrinctarray[k] = districtmodel; 
            distrinctnamearray[k] = districtmodel.getname(); 
          } 
          // 市-区/县的数据，保存到mdistrictdatasmap 
          mdistrictdatasmap.put(citynames[j], distrinctnamearray); 
        } 
        // 省-市的数据，保存到mcitisdatasmap 
        mcitisdatasmap.put(provincelist.get(i).getname(), citynames); 
      } 
    } catch (throwable e) { 
      e.printstacktrace(); 
    } finally { 
 
    } 
  } 
 
}

主界面mainactivity

package com.mrwujay.cascade.activity; 
 
import com.mrwujay.cascade.r; 
import com.mrwujay.cascade.r.id; 
import com.mrwujay.cascade.r.layout; 
 
import kankan.wheel.widget.onwheelchangedlistener; 
import kankan.wheel.widget.wheelview; 
import kankan.wheel.widget.adapters.arraywheeladapter; 
import android.os.bundle; 
import android.app.activity; 
import android.view.menu; 
import android.view.view; 
import android.view.view.onclicklistener; 
import android.widget.button; 
import android.widget.toast; 
 
public class mainactivity extends baseactivity implements onclicklistener, onwheelchangedlistener { 
  private wheelview mviewprovince; 
  private wheelview mviewcity; 
  private wheelview mviewdistrict; 
  private button mbtnconfirm; 
 
  @override 
  protected void oncreate(bundle savedinstancestate) { 
    super.oncreate(savedinstancestate); 
    setcontentview(r.layout.activity_main); 
    setupviews(); 
    setuplistener(); 
    setupdata(); 
  } 
   
  private void setupviews() { 
    mviewprovince = (wheelview) findviewbyid(r.id.id_province); 
    mviewcity = (wheelview) findviewbyid(r.id.id_city); 
    mviewdistrict = (wheelview) findviewbyid(r.id.id_district); 
    mbtnconfirm = (button) findviewbyid(r.id.btn_confirm); 
  } 
   
  private void setuplistener() { 
    // 添加change事件 
    mviewprovince.addchanginglistener(this); 
    // 添加change事件 
    mviewcity.addchanginglistener(this); 
    // 添加change事件 
    mviewdistrict.addchanginglistener(this); 
    // 添加onclick事件 
    mbtnconfirm.setonclicklistener(this); 
  } 
   
  private void setupdata() { 
    initprovincedatas(); 
    mviewprovince.setviewadapter(new arraywheeladapter<string>(mainactivity.this, mprovincedatas)); 
    // 设置可见条目数量 
    mviewprovince.setvisibleitems(7); 
    mviewcity.setvisibleitems(7); 
    mviewdistrict.setvisibleitems(7); 
    updatecities(); 
    updateareas(); 
  } 
 
  /** 
   * 根据当前的省，更新市wheelview的信息 
   */ 
  private void updatecities() { 
    //获取当前的省份的itme索引值 
    int pcurrent = mviewprovince.getcurrentitem(); 
    //湖区当前省份名字 
    mcurrentprovicename = mprovincedatas[pcurrent]; 
    //获取该省份下面的市数组集合 
    string[] cities = mcitisdatasmap.get(mcurrentprovicename); 
    if (cities == null) { 
      cities = new string[] { "" }; 
    } 
    mviewcity.setviewadapter(new arraywheeladapter<string>(this, cities)); 
    mviewcity.setcurrentitem(0); 
    updateareas(); 
  } 
  /** 
   * 根据当前的市，更新区wheelview的信息 
   */ 
  private void updateareas() { 
    int pcurrent = mviewcity.getcurrentitem(); 
    mcurrentcityname = mcitisdatasmap.get(mcurrentprovicename)[pcurrent]; 
    string[] areas = mdistrictdatasmap.get(mcurrentcityname); 
 
    if (areas == null) { 
      areas = new string[] { "" }; 
    } 
    mviewdistrict.setviewadapter(new arraywheeladapter<string>(this, areas)); 
    mviewdistrict.setcurrentitem(0); 
  } 
 
   
   
  /** 
   * 实现接口方法的回调 
   */ 
  @override 
  public void onchanged(wheelview wheel, int oldvalue, int newvalue) { 
    // todo auto-generated method stub 
    if (wheel == mviewprovince) { 
      updatecities(); 
    } else if (wheel == mviewcity) { 
      updateareas(); 
    } else if (wheel == mviewdistrict) { 
      //获取县的名字 
      mcurrentdistrictname = mdistrictdatasmap.get(mcurrentcityname)[newvalue]; 
      //获取县的编码 
      mcurrentzipcode = mzipcodedatasmap.get(mcurrentdistrictname); 
    } 
  } 
 
 
 
  @override 
  public void onclick(view v) { 
    switch (v.getid()) { 
    case r.id.btn_confirm: 
      showselectedresult(); 
      break; 
    default: 
      break; 
    } 
  } 
 
  private void showselectedresult() { 
    toast.maketext(mainactivity.this, "当前选中:"+mcurrentprovicename+","+mcurrentcityname+"," 
        +mcurrentdistrictname+","+mcurrentzipcode, toast.length_short).show(); 
  } 
}

还有2个drawable
wheel_bg.xml

<?xml version="1.0" encoding="utf-8"?> 
 
 
<layer-list xmlns:android="http://schemas.android.com/apk/res/android"> 
   
</layer-list>

wheel_val.xml

<?xml version="1.0" encoding="utf-8"?> 
<shape xmlns:android="http://schemas.android.com/apk/res/android" > 
 
  <gradient 
    android:angle="90" 
    android:centercolor="#70222222" 
    android:endcolor="#70eeeeee" 
    android:startcolor="#70222222" /> 
 
  <stroke 
    android:width="20dp" 
    android:color="#ff69b4" /> 
 
</shape>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持移动技术网。

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android-wheel控件实现三级联动效果

2019年07月24日 | 移动技术网移动技术 | 我要评论

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