to display the data obtained from button listener to list- codename one - codenameone

Question

I have a button that display the data obtained from json. below is my code for button action. I need help to display the data obtained to list.
#Override
protected void onMain_ButtonAction(final Component c, ActionEvent event) {
ConnectionRequest r = new ConnectionRequest() {
Hashtable h;
#Override
protected void postResponse() {
}
#Override
protected void readResponse(InputStream input) throws IOException {
InputStreamReader reader = new InputStreamReader(input);
JSONParser p = new JSONParser();
h = p.parse(new InputStreamReader(input));
Hashtable response = p.parse(reader);
Hashtable feed = (Hashtable)response.get("root");
for (Object s : h.values()) {
Vector vec = new Vector(100);
vec = (Vector)s;
int i;
for(i = 0; i<vec.size(); i++){
Hashtable<String, String> ht= (Hashtable<String, String>) vec.get(i);
System.out.println(ht.get("location"));
// findLabel().setText(ht.get("location"));
}
}
}
};
r.setUrl("http://ruslanapp.demo.capitaleyenepal.com/vodka-mobile-interface/getData/locations");
r.setPost(false);
InfiniteProgress prog = new InfiniteProgress();
Dialog dlg = prog.showInifiniteBlocking();
r.setDisposeOnCompletion(dlg);
NetworkManager.getInstance().addToQueue(r);
}
I want to list the data obtained frm btn above to the list below. how can I do it??
#Override
protected boolean initListModelList1(List cmp) {
cmp.setModel(new com.codename1.ui.list.DefaultListModel(new String[] {"Item 1", "Item 2", "Item 3"}));
return true;
}

Answer 1

You did most of the work well, I suggest avoiding a list and using an infinite container. The PropertyCross demo has pretty much this functionality (including JSON): https://www.udemy.com/learn-mobile-programming-by-example-with-codename-one/
To finish the code above create the model ArrayList above e.g. assuming you are using a MultiList:
// define this in the class variables:
private ArrayList<Map<String, String>> modelData = new ArrayList<Map<String, String>>();
// then in the code (I assumed stuff about your JSON, correct the
// code to extract the data correctly, just set the hashmap values
for (Object s : h.values()) {
Collection<Map<String, String>>) data = (Collection<Map<String, String>>))s;
for(Map<String, String> ht : data) {
String location = ht.get("location");
HashMap<String, String> entry = new HashMap<String, String>();
entry.put("Line1", location);
modelData.add(entry);
}
}
Then in:
#Override
protected boolean initListModelList1(List cmp) {
cmp.setModel(new DefaultListModel(modelData));
return true;
}
Notice that you should use showForm() to show the next form in the postResponse method.