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[{"id":"32","hyname":"建筑装修"},{"id":"15","hyname":"机械制造"},{"id":"16","hyname":"电子通信"},{"id":"21","hyname":"计量监测"},{"id":"28","hyname":"化验检测"},{"id":"19","hyname":"地质勘探"},{"id":"23","hyname":"农林牧渔"},{"id":"30","hyname":"机械冷加工"},{"id":"31","hyname":"机械热加工"},{"id":"22","hyname":"物资储运"},{"id":"24","hyname":"餐饮服务"}]
class YourCollection{
private String id;
private String hename;
void setHename(String hename){
this.hename = hename;
}
String getHename(){
return hename;
}
void setId(String id){
this.id= id;
}
String getId(){
return id;
}
}
// AsyncTask
@Override
protected List<YourCollection> doInBackground(Void... params) {
JSONObject obj = null;
List<YourCollection> result = new ArrayList<YourCollection>();
try{
InputStream ips = activity.getAssets().open("your.json");
BufferedReader buffer = new BufferedReader(new InputStreamReader(ips));
StringBuilder string = new StringBuilder();
String line = "";
while((line = buffer.readLine()) != null){
string.append(line);
}
obj = new JSONObject(string.toString());
}
catch(Exception e){
}
if(obj != null){
JSONArray array = obj.optJSONArray("data");
for (int i=0; i<array.length(); i++){
JSONObject rss = array.optJSONObject(i);
YourCollection m = new YourCollection ();
m.setHename(rss.optString("hename")); m.setId(rss.optString("id"));
result.add(m);
}
}
return result;
}
在 Adapter 中创建一个函数来返回列表,使用:
OnItemSelectedListener mwe = new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
List<YourCollection> list = YourAdapter.getList(); // your function to get List
YourCollection c = list.get(arg2);
String id = c.getId();
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
};
String jsontext=[{"id":"32","hyname":"Construction & Remodel"},...];
ArrayList<String> list=new ArrayList<String>();
Hashtable<String,String> hnameids=new Hashtable<String,String>();
JsonArray array=new JsonArray(jsontext);
for(int i=0;i<array.length;i++)
{
JsonObject obj=array.getJsonObject(i);
list.add(obj.getString("hyname"));
hnameids.put(obj.getString("hyname"),obj.getString("id"));
}
ArrayAdapter adapter=new ArrayAdapter(context,android.R.layout.simple_list_item1,list);
spinner.setAdapter(adapter);
spinner.OnItemSelectedListener (new OnItemClickListener() {
public void onItemClick(AdapterView<?> adapter, View view, int pos,
long id) {
String data= spinner.getSelectedItem();
String id=hnameids.get(data);
}
});