public class ChooseAreaFragment extends Fragment {
public static final int LEVEL_PROVINCE=0;
public static final int LEVEL_CITY=1;
public static final int LEVEL_COUNTY=2;
private ProgressDialog progressDialog;
private TextView titleText;
private Button back_btn;
private ListView listView;
private ArrayAdapter<String> adapter;
private List<String> dataList =new ArrayList<>();
//省列表
private List<Province> provinceList;
//市列表
private List<City> cityList;
//县列表
private List<County> countyList;
//被选中的省份
private Province selectedProvince;
//被选中的城市
private City selectedCity;
//当前选中的级别
private int currentLevel;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view =inflater.inflate(R.layout.choose_area,container,false);
titleText =(TextView)view.findViewById(R.id.title_text);
back_btn=(Button)view.findViewById(R.id.back_button);
listView=(ListView)view.findViewById(R.id.list_view);
adapter=new ArrayAdapter<>(getContext(),android.R.layout.simple_list_item_1,dataList);
listView.setAdapter(adapter);
return view;
}
@Override
public void onActivityCreated( Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
if(currentLevel == LEVEL_PROVINCE){
selectedProvince=provinceList.get(position);
queryCities();
}else if (currentLevel==LEVEL_CITY){
selectedCity=cityList.get(position);
queryCounties();
}
}
});
back_btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(currentLevel==LEVEL_COUNTY){
queryCities();
}else if (currentLevel==LEVEL_CITY){
queryProvinces();
}
}
});
queryProvinces();
}
/**
* 查询全国所有省，优先从数据库查询，如果没有查询到在从服务器查询
*/
private void queryProvinces(){
titleText.setText("中国");
back_btn.setVisibility(View.GONE);
//查询Province类中的所有数据
provinceList = DataSupport.findAll(Province.class);
if(provinceList.size()>0){
dataList.clear();
for (Province province : provinceList){
dataList.add(province.getProvinceName());
}
adapter.notifyDataSetChanged();
listView.setSelection(0);
currentLevel=LEVEL_PROVINCE;
}else {
String address = "http://guolin.tech/api/china";
Log.e("queryProvinces",address);
queryFromServer(address,"province");
}
}
/**
* 根据传入的地址和类型从服务器获取数据
* @param address
* @param type
*/
private void queryFromServer(String address,final String type) {
showProgressDialog();
HttpUtil.sendOKHttpRequest(address, new Callback() {
@Override
public void onResponse(Call call, Response response) throws IOException {
String responseText = response.body().string();
boolean result =false ;
if ("province".equals(type)){
result = Utility.handleProvinceResponse(responseText);
}else if ("city".equals(type)){
result = Utility.handleCityResponse(responseText,
selectedProvince.getId());
}else if ("county".equals(type)){
result = Utility.handleCountyResponse(responseText,selectedCity.getId());
}if (result){
getActivity().runOnUiThread(new Runnable() {
@Override
public void run() {
closeProgressDialog();
if("province".equals(type)){
queryProvinces();
}else if("city".equals(type)){
queryCities();
}else if ("county".equals(type)){
queryCounties();
}
}
});
}
}
@Override
public void onFailure(Call call, IOException e) {
getActivity().runOnUiThread(new Runnable() {
@Override
public void run() {
closeProgressDialog();
Toast.makeText(getContext(), "加载失败", Toast.LENGTH_SHORT).show();
}
});
}
});
}
private void closeProgressDialog() {
if(progressDialog!=null){
progressDialog.dismiss();
}
}
private void showProgressDialog() {
if(progressDialog==null){
progressDialog =new ProgressDialog(getActivity());
progressDialog.setMessage("正在加载中");
progressDialog.setCanceledOnTouchOutside(false);
}
progressDialog.show();
}
/**
* 查询所有县
*/
private void queryCounties() {
titleText.setText(selectedCity.getCityName());
back_btn.setVisibility(View.VISIBLE);
countyList=DataSupport.where("cityid+?",String.valueOf(selectedCity.getId()))
.find(County.class);
if(countyList.size()>0){
dataList.clear();
for (County county : countyList){
dataList.add(county.getCountyName());
}
adapter.notifyDataSetChanged();
listView.setSelection(0);
currentLevel=LEVEL_CITY;
}else {
int provinceCode = selectedProvince.getProvinceCode();
int cityCode = selectedCity.getCityCode();
String address = "http://guolin.tech/api/china/"+provinceCode+"/"+cityCode;
queryFromServer(address,"county");
}
}
/**
* 查询选中省内的所有的城市，优先查询数据库
*/
private void queryCities() {
titleText.setText(selectedProvince.getProvinceName());
back_btn.setVisibility(View.VISIBLE);
cityList = DataSupport.where("provinceid=?",String.valueOf(selectedProvince.getId()))
.find(City.class);
if(cityList.size()>0){
dataList.clear();
for(City city :cityList){
dataList.add(city.getCityName());
}
//用于刷新listView的界面
adapter.notifyDataSetChanged();
listView.setSelection(0);
currentLevel=LEVEL_CITY;
}else {
int provinceCode = selectedProvince .getProvinceCode();
String address = "http://guolin.tech/api/china/"+provinceCode;
queryFromServer(address,"city");
}
}
}
-----------
以上黑色部分 我经过调试 发现没有执行到这个ui线程里面的代码，导致程序一直卡在progressDialog中（如图）
在调试中，json数据已经都加载进来了 偏偏runOnUiThread中的代码不会执行，菜鸟虚心求大神指点
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