Android 模仿城市列表ExpandableListView

好久没写博客了。很多东西都没积累，现在要开始重新积累起来了。嘻嘻

最近在写一款获取城市列表，当点击市名称时，将其下面的区名称显示出来，首先我是利用往layout中加入布局文件实现的。第三种是从网上看到有人用ExpandableListView实现的。第四种是自己整理的。

第一种方法跟第二种方法十分类似。第二种方法比较精简一点儿。

public class TwoActivity extends Activity {

private LinearLayout layout;
private List<String> provinceList = new ArrayList<String>();// 省份列表
private List<Map<String, Object>> cityList = new ArrayList<Map<String, Object>>();// 城市列表

private final String LIST_PROVINCE = "province";// 省份
private final String LIST_CITY = "city";// 城市
private final String LIST_IS_OPEN = "isOpen";// 是否展开
private final String LIST_AREAS = "areas";// 属于某一个市的区列表

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.two_activity);
initView();
getData();
fillData();
}

private void initView() {
layout = (LinearLayout) findViewById(R.id.layout_two);
}

private void getData() {
for (int i = 0; i < 10; i++) {
provinceList.add("province" + i);
}

for (int j = 0; j < 10; j++) {
Map<String, Object> map = new HashMap<String, Object>();
map.put(LIST_PROVINCE, provinceList.get(j));
map.put(LIST_CITY, "city" + j);
map.put(LIST_IS_OPEN, false);
List<String> itemList = new ArrayList<String>();
for (int m = 0; m < 10; m++) {
itemList.add("area is " + m);
}
map.put(LIST_AREAS, itemList);
cityList.add(map);
}

for (int j = 0; j < 10; j++) {
Map<String, Object> map = new HashMap<String, Object>();
map.put(LIST_PROVINCE, provinceList.get(j));
map.put(LIST_CITY, "cityone" + j);
map.put(LIST_IS_OPEN, false);
List<String> itemList = new ArrayList<String>();
for (int m = 0; m < 10; m++) {
itemList.add("area is " + m);
}
map.put(LIST_AREAS, itemList);
cityList.add(map);

}

}

@SuppressWarnings("unchecked")
@SuppressLint("InflateParams")
private void fillData() {
for (int i = 0; i < provinceList.size(); i++) {
View v_title = LayoutInflater.from(this).inflate(
R.layout.item_province, null);
TextView tv_title = (TextView) v_title
.findViewById(R.id.tv_title_item);
tv_title.setText(provinceList.get(i));
layout.addView(v_title);
for (int j = 0; j < cityList.size(); j++) {
if (provinceList.get(i).equals(
cityList.get(j).get(LIST_PROVINCE))) {
View v_city = LayoutInflater.from(this).inflate(
R.layout.item_city, null);
TextView tv_city = (TextView) v_city
.findViewById(R.id.tv_city_item);
tv_city.setText(cityList.get(j).get(LIST_CITY).toString());

final int position = j;
tv_city.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
boolean isOpen = !(boolean) cityList.get(position)
.get(LIST_IS_OPEN);
Map<String, Object> newMap = new HashMap<String, Object>();
newMap = cityList.get(position);
newMap.put(LIST_IS_OPEN, isOpen);
layout.removeAllViews();
fillData();
}
});
layout.addView(v_city);

if ((boolean) cityList.get(j).get(LIST_IS_OPEN)) {
List<String> list = new ArrayList<String>();
list = (List<String>) cityList.get(j).get(LIST_AREAS);
for (int n = 0; n < list.size(); n++) {
View v_area = LayoutInflater.from(TwoActivity.this)
.inflate(R.layout.item_area, null);
TextView tv_area = (TextView) v_area
.findViewById(R.id.tv_area_item);
tv_area.setText(list.get(n));
layout.addView(v_area);
}
}
}
}
}
}

}第四种方法是使用ExpandableListView来实现的。比第二种方法简单很多。并且可以实现相同的功能。
public class FourActivity extends Activity {

private ExpandableListView expandableListview;
private FourAdapter adapter;

private List<Map<String, Object>> dataList = new ArrayList<Map<String, Object>>();// 存储数据的列表

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.four_activity);
initView();
getListData();
adapter.setList(dataList);
}

private void initView() {
expandableListview = (ExpandableListView) findViewById(R.id.elv_four);
expandableListview.setGroupIndicator(null);// 设置属性，去掉默认的箭头
adapter = new FourAdapter(FourActivity.this);
expandableListview.setAdapter(adapter);
}

private void getListData() {
for (int i = 0; i < 10; i++) {
Map<String, Object> pMap = new HashMap<String, Object>();
pMap.put(Constances.LIST_TYPE, Constances.TYPE_PROVINCE);
pMap.put(Constances.LIST_NAME, "province --- " + i);
dataList.add(pMap);
for (int j = 0; j < 3; j++) {
Map<String, Object> map = new HashMap<String, Object>();
map.put(Constances.LIST_TYPE, Constances.TYPE_CITY);
map.put(Constances.LIST_NAME, "province --- " + i + "city === "
+ j);
List<String> itemList = new ArrayList<String>();
for (int m = 0; m < 10; m++) {
itemList.add("province --- " + i + "city === " + j
+ "area is " + m);
}
map.put(Constances.LIST_AREAS, itemList);
dataList.add(map);
}
}
}
}实现的功能十分简单。就是一个城市列表。点击查看更多。
源码下载地址：http://download.csdn.net/detail/u011382076/8752309

直接下载就可以运行的一个工程。欢迎大家指教