1. 首先非常感谢鸿洋,大神是CSDN上我非常敬仰开发工程师。我是在大神提供的demo基础上稍稍改动一下就达到我自己想要的效果
2. 我的省市区实现的是能够动态修改自定义控件的数据,非常简单就是你需要什么信息传递什么信息,数据就能改动,直接拷贝到自己的项目中就能用
3. 部分关键代码,完整的代码自行下载使用
1) 解析json数据
private void initJsonData1() {
try {
StringBuffer sb = new StringBuffer();
InputStream is = getAssets().open("area.json");
int len = -1;
byte[] buf = new byte[1024];
while ((len = is.read(buf)) != -1) {
sb.append(new String(buf, 0, len, "utf-8"));
}
is.close();
mJsonObj1 = new JSONArray(sb.toString());
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
}
2) 加载解析的省市区数据
private void initJson() {
try {
for (int i = 0; i < mJsonObj1.length(); i++) {
JSONObject jsonP = mJsonObj1.getJSONObject(i);// 每个省的json对象
String province = jsonP.getString("name");
String cityList = jsonP.getString("cityList");
// Log.i("province", province);
provinceshuzu.add(province);
array1 = (String[]) provinceshuzu.toArray(new String[provinceshuzu.size()]);
// Log.i("provinceshuzu1", ""+Arrays.asList(array1));
JSONArray array = new JSONArray(cityList);
for (int k = 0; k < array.length(); k++) {
JSONObject jsonC = array.getJSONObject(k);// 每个省的json对象
city = jsonC.getString("name");
areaList = jsonC.getString("areaList");
name = areaList.substring(1, areaList.length() - 1);
name1 = name.replace("\"", "");
name2 = name1.replace("\",", ",");
name3 = name2.split(",");
// Log.i("5555559999", ""+Arrays.asList(name3));
if (province.equals("北京")) {
cityshuzu.add("京" + city);
mAreaDatasMap1.put("京" + city, name3);
} else if (province.equals("天津")) {
cityshuzu.add("津" + city);
mAreaDatasMap1.put("津" + city, name3);
} else if (province.equals("上海")) {
cityshuzu.add("沪" + city);
mAreaDatasMap1.put("沪" + city, name3);
} else {
cityshuzu.add(city);
mAreaDatasMap1.put(city, name3);
}
array2 = (String[]) cityshuzu.toArray(new String[cityshuzu.size()]);
// Log.i("9999", ""+Arrays.asList(array2));
}
cityshuzu.clear();
mCitisDatasMap1.put(province, array2);
}
} catch (Exception e) {
}
mJsonObj1 = null;
}
3) 根据当前的省更新市
private void updateCities() {
int pCurrent = mProvince.getCurrentItem();
mCurrentProviceName = array1[pCurrent];
String[] cities = mCitisDatasMap1.get(mCurrentProviceName);
if (cities == null) {
cities = new String[] { "" };
}
Log.i("777771111111", "" + mCurrentProviceName);
Log.i("77777", "" + Arrays.asList(cities));
mCity.setViewAdapter(new ArrayWheelAdapter(this, cities));
mCity.setCurrentItem(0);
updateAreas();
}
4) 根据当前的市更新相应的区
private void updateAreas() {
int pCurrent = mCity.getCurrentItem();
mCurrentCityName = mCitisDatasMap1.get(mCurrentProviceName)[pCurrent];
Log.i("5555555555", "--" + mCurrentCityName);
Log.i("5555555555", "--" + mCitisDatasMap1.get(mCurrentProviceName)[pCurrent]);
String[] areas = mAreaDatasMap1.get(mCurrentCityName);
if (areas == null) {
areas = new String[] { "" };
}
Log.i("6666666666", "" + Arrays.asList(areas));
mArea.setViewAdapter(new ArrayWheelAdapter(this, areas));
mArea.setCurrentItem(0);
}
5) 联动效果的实现代码
@Override
public void onChanged(WheelView wheel, int oldValue, int newValue) {
if (wheel == mProvince) {
Log.i("4444444444444444", "8888888888888");
updateCities();
if (mAreaDatasMap1 != null && mAreaDatasMap1.get(mCurrentCityName) != null) {
mCurrentAreaName = mAreaDatasMap1.get(mCurrentCityName)[0];
} else {
mCurrentAreaName = "";
}
} else if (wheel == mCity) {
updateAreas();
// 地区
if (mAreaDatasMap1 != null && mAreaDatasMap1.get(mCurrentCityName) != null) {
mCurrentAreaName = mAreaDatasMap1.get(mCurrentCityName)[0];
} else {
mCurrentAreaName = "";
}
} else if (wheel == mArea) {
mCurrentAreaName = mAreaDatasMap1.get(mCurrentCityName)[newValue];
if (mAreaDatasMap1 != null && mAreaDatasMap1.get(mCurrentCityName) != null) {
mCurrentAreaName = mAreaDatasMap1.get(mCurrentCityName)[newValue];
} else {
mCurrentAreaName = "";
}
}
}
6) 动态更新省市区的代码
private void changeSheng(String sheng) {
Log.i("sheng", sheng);
for (int i = 0; i < array1.length; i++) {
if (array1[i].equals(sheng)) {
mProvince.setCurrentItem(i);
Log.i("sheng", array1[i]);
}
}
}
private void changeShi(String shi) {
Log.i("shi", shi);
int pCurrent = mProvince.getCurrentItem();
mCurrentProviceName = array1[pCurrent];
String[] cities = mCitisDatasMap1.get(mCurrentProviceName);
if (cities == null) {
cities = new String[] { "" };
}
for (int i = 0; i < cities.length; i++) {
if (cities[i].equals(shi)) {
mCity.setCurrentItem(i);
Log.i("shi1111111", cities[i]);
}
}
}
private void changeQu(String qu) {
Log.i("qu", qu);
int pCurrent = mCity.getCurrentItem();
mCurrentCityName = mCitisDatasMap1.get(mCurrentProviceName)[pCurrent];
String[] areas = mAreaDatasMap1.get(mCurrentCityName);
if (areas == null) {
areas = new String[] { "" };
}
for (int i = 0; i < areas.length; i++) {
if (areas[i].equals(qu)) {
mArea.setCurrentItem(i);
Log.i("qu111111", areas[i]);
}
}
}
6. 如需修改代码只需要改动以下内容
1) 根据json数据的不同自行解析自己的json数据就行,相信大家对于解析json很擅长。
2) 乱码的问题:用editplus重新编码json文件,然后将代码中解码也改成utf-8在试一下。
代码下载地址