简单实现一个Android ListView分类

最近在做一个关于招聘的APP，里面有选择城市一项，是用listview分类，有的人说两个listview嵌套，但是感觉太麻烦了，比较listview底层太复杂，有的人用expandablelistview,但是感觉效果一样不好，所以写了一个比较简单的，希望对大家有帮助！

1.首先看MainActivity类！

其实跟普通的代码一样，只是多了一个MyBean类!

package com.zhaoqingyuan.zhaoqingyuan;

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

import android.app.Activity;
import android.os.Bundle;
import android.widget.ListView;

public class MainActivity extends Activity {
  private ListView listView;
  private MyAdapter myAdapter;
  private List<MyBean>list=new ArrayList<MyBean>();//装数据的
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    listView=(ListView) findViewById(R.id.listView1);

    //装数据了
    //当前位置
    MyBean myBean=new MyBean("当前位置", "北京");
    list.add(myBean);
    //热门城市
    String[] hotCity={"全国","北京","上海","武汉","广州","天津","太原","南京","深圳","重庆","昆明","拉萨","石家庄","哈尔滨","贵阳"};
    for (int i = 0; i < hotCity.length; i++) {
      MyBean myBean2=new MyBean("热门城市", hotCity[i]);
      list.add(myBean2);
    }
    //热门城市

    String[] province={"河北省","河南省","云南省","辽宁省","黑龙江省","湖南省","安徽省","山东省","江苏省","浙江省",
        " 江西省","湖北省","甘肃省","山西省","内蒙古","陕西省","吉林省","福建省","贵州省","广东省",
        "青海省","西藏","四川省","宁夏回族","海南省","台湾省"};
    for (int i = 0; i < province.length; i++) {
      MyBean myBean3=new MyBean("按省份选择城市", province[i]);
      list.add(myBean3);
    }

    myAdapter=new MyAdapter(MainActivity.this, list);
    listView.setAdapter(myAdapter);
  }
}

2.这个是Bean类，里面有get和set方法！

package com.zhaoqingyuan.zhaoqingyuan;

public class MyBean {

  private String series;
  private String city;//可以替代省份名称
  public MyBean(String series,String city) {
    setSeries(series);
    setCity(city);
  }
  public String getSeries() {
    return series;
  }
  public void setSeries(String series) {
    this.series = series;
  }
  public String getCity() {
    return city;
  }
  public void setCity(String city) {
    this.city = city;
  }


}

3.接下来就是我们在熟悉不过的适配器了！就是多了两行代码而已！

package com.zhaoqingyuan.zhaoqingyuan;

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

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

public class MyAdapter extends BaseAdapter {
  private Context context;
  private List<MyBean>list=new ArrayList<MyBean>();
  public MyAdapter(Context context,List<MyBean>list) {
    this.context=context;
    this.list=list;
  }

  @Override
  public int getCount() {

    return list.size();
  }

  @Override
  public Object getItem(int position) {

    return list.get(position);
  }

  @Override
  public long getItemId(int position) {

    return position;
  }
  Holder holder;
  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
    holder=new Holder();
    if (convertView==null) {
      convertView=LayoutInflater.from(context).inflate(R.layout.item, null);
      holder.tv_series=(TextView) convertView.findViewById(R.id.tv_series);
      holder.tv_city=(TextView) convertView.findViewById(R.id.tv_city);
      convertView.setTag(holder);
    }else {
      holder=(Holder) convertView.getTag();
    }
    String series1=list.get(position).getSeries();
    String series2=position-1>=0?list.get(position-1).getSeries():"";
    if (!series1.equals(series2)) {
      holder.tv_series.setVisibility(View.VISIBLE);
      System.out.println(position);
      holder.tv_series.setText(series1);
      holder.tv_city.setText(list.get(position).getCity());
    }else {
      holder.tv_series.setVisibility(View.GONE);
      holder.tv_city.setText(list.get(position).getCity());
    }


    return convertView;
  }

  private class Holder{
    TextView tv_series,tv_city;
  }

}

4.来看下简单的XML代码

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >

    <ListView
        android:id="@+id/listView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true">
    </ListView>

</RelativeLayout>

<?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:orientation="vertical" >

    <TextView
        android:id="@+id/tv_series"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@android:color/darker_gray"
        android:visibility="gone"
        android:padding="5dip"
        android:textSize="18dip"
        android:text="TextView" />

    <TextView
        android:id="@+id/tv_city"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dip"
        android:textSize="18dip"
        android:text="TextView" />

</LinearLayout>

OK了，大功告成，让我们看一下效果吧！

 ​​源码点击此处下载​​