全国省市县选择在app中是十分常见的，个人信息资料填写需要，电商填写收货地址需要，按地区分类填写地址需要。有的是用wheelview滚轮实现，这里我是用的popupwindow实现。
github代码直通车
先上效果图：
giphy.gif
全国省市县数据文件
json数据展示
1.从资源文件中读取完整json字符串，用openRawResource()方法打开raw文件夹下的文件。
private String getAddress() {
StringBuilder sb = new StringBuilder();
try {
InputStream inputStream = context.getResources().openRawResource(R.raw.area);
byte[] buffer = new byte[1024];
while (inputStream.read(buffer) != -1) {
sb.append(new String(buffer, "UTF-8"));
}
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
return sb.toString();
}
2.分别解析出所有省市县集合
/**
* 解析出所有省市县
*/
private void parseArray() {
try {
JSONObject object = new JSONObject(getAddress());
JSONArray provinceArray = object.getJSONArray("province");
JSONArray cityArray = object.getJSONArray("city");
JSONArray countyArray = object.getJSONArray("district");
provinceDatas = JSON.parseArray(provinceArray.toString(), ProvinceEntity.class);
cityDatas = JSON.parseArray(cityArray.toString(), CityEntity.class);
countyDatas = JSON.parseArray(countyArray.toString(), CountyEntity.class);
} catch (JSONException e) {
e.printStackTrace();
}
}
3.逐步解析省市县：所有的省市县对象都有名称text和标记id。id由6个数字组成，前2位是省份标识，中间2位是市标识，后面2位是县标识。先选择省，用id截取前2位数字，遍历所有市前2位相等则找到对应市。选择市，用id截取前2位数字，遍历所有县的id前2位，相等的则为下属所有县。
实体类：
public class ProvinceEntity {
private String text;
private String id;
//sett get
}
public class CityEntity {
private String text;
private String id;
//get set
}
public class CountyEntity {
private String text;
private String id;
private String zipcode;
//get set
}
关键代码：
/**
* 选择省
*/
private void selectProvince() {
recyclerView = (RecyclerView) view.findViewById(R.id.rv_popup_address);
recyclerView.setLayoutManager(new LinearLayoutManager(context));
parseArray();
CommonAdapter commonAdapter = new CommonAdapter(context,R.layout.item_address_textview,provinceDatas) {
@Override
protected void convert(ViewHolder holder, ProvinceEntity provinceEntity, int position) {
holder.setText(R.id.tv_popup_place,provinceEntity.getText());
}
};
recyclerView.setAdapter(commonAdapter);
commonAdapter.setOnItemClickListener(new MultiItemTypeAdapter.OnItemClickListener() {
@Override
public void onItemClick(View view, RecyclerView.ViewHolder holder, int position) {
saveProvinceCode = provinceDatas.get(position).getId();
saveProvinceName = provinceDatas.get(position).getText();
provinceChargeCode = saveProvinceCode.substring(0, 2);
String cityCode;
for (int i = 0; i < cityDatas.size(); i++) {
cityCode = cityDatas.get(i).getId();
if (provinceChargeCode.equals(cityCode.substring(0, 2))) {
currentCitiesDatas.add(cityDatas.get(i));
}
}
selectCites();
}
@Override
public boolean onItemLongClick(View view, RecyclerView.ViewHolder holder, int position) {
return false;
}
});
view.findViewById(R.id.tv_popup_cancel).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dismiss();
view.clearAnimation();
}
});
}
/**
* 根据当前省选择市
*/
private void selectCites(){
CommonAdapter adapter = new CommonAdapter(context,R.layout.item_address_textview,currentCitiesDatas) {
@Override
protected void convert(ViewHolder holder, CityEntity cityEntity, int position) {
holder.setText(R.id.tv_popup_place,cityEntity.getText());
}
};
recyclerView.setAdapter(adapter);
adapter.setOnItemClickListener(new MultiItemTypeAdapter.OnItemClickListener() {
@Override
public void onItemClick(View view, RecyclerView.ViewHolder holder, int position) {
saveCityCode = currentCitiesDatas.get(position).getId();
saveCityName = currentCitiesDatas.get(position).getText();
citiesChargeCode = saveCityCode.substring(2, 4);
String countyCode;
for (int i = 0; i < countyDatas.size(); i++) {
countyCode = countyDatas.get(i).getId();
if (countyCode.substring(0, 2).equals(provinceChargeCode) && countyCode.substring(2,4).equals(citiesChargeCode)) {
currentCountiesDatas.add(countyDatas.get(i));
}
}
selectCounties();
}
@Override
public boolean onItemLongClick(View view, RecyclerView.ViewHolder holder, int position) {
return false;
}
});
}
/**
* 根据当前市选择县
*/
private void selectCounties(){
CommonAdapter adapter = new CommonAdapter(context,R.layout.item_address_textview,currentCountiesDatas) {
@Override
protected void convert(ViewHolder holder, CountyEntity countyEntity, int position) {
holder.setText(R.id.tv_popup_place,countyEntity.getText());
}
};
recyclerView.setAdapter(adapter);
adapter.setOnItemClickListener(new MultiItemTypeAdapter.OnItemClickListener() {
@Override
public void onItemClick(View view, RecyclerView.ViewHolder holder, int position) {
saveCountyCode = currentCountiesDatas.get(position).getId();
saveCountyName = currentCountiesDatas.get(position).getText();
saveZipCode = currentCountiesDatas.get(position).getZipcode();
dismiss();
view.clearAnimation();
if(callBack != null){
callBack.callBack(saveProvinceName + ";" + saveCityName + ";" + saveCountyName);
}
}
@Override
public boolean onItemLongClick(View view, RecyclerView.ViewHolder holder, int position) {
return false;
}
});
}
4.Popupwindow使用方法：rootview为页面根布局
AddressPopupWindow addressPopupWindow = new AddressPopupWindow(this);
addressPopupWindow.showAtLocation(rootView, Gravity.BOTTOM, 0, 0);
完整代码请看github上demo。后续会出全球国家选择器。