android - How to display the distance and time travelled between two points using spinners? -

i want create app selecting town-a 1 spinner , town-b other spinner. want display distance between towns time take there selected towns.

i have found this:

var dist = [ ['town b', [], []], ['town c', [67], ['1h00m']], ['town d', [282,251], ['11h10m','10h00m']], ['town e', [243,210,41], ['9h45m','8h25m','1h40m']], 

now html dropdown boxes , calculates above file (dist.js)

now know how convert using 2 spinners. think have basic idea not sure how implement. thinking when spinner 1 selected , spinner 2 needs spinner 1 = spinner 2 , distance 67km , time 1h00m.

i don't have code cause haven't tried yet because not sure start. hoping me?

edit

this have sofar:

public class mainactivity extends activity implements onitemselectedlistener {  private spinner startloc; private spinner enddes;  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);      startloc = (spinner) findviewbyid(r.id.spinner1);     arrayadapter<charsequence> adapter_start = arrayadapter             .createfromresource(this, r.array.start_location,                     android.r.layout.simple_spinner_item);     adapter_start.setdropdownviewresource(android.r.layout.simple_spinner_dropdown_item);     startloc.setadapter(adapter_start);     startloc.setonitemselectedlistener(this);      enddes = (spinner) findviewbyid(r.id.spinner2);     arrayadapter<charsequence> adapter_end = arrayadapter             .createfromresource(this, r.array.end_location,                     android.r.layout.simple_spinner_item);     adapter_end.setdropdownviewresource(android.r.layout.simple_spinner_dropdown_item);     enddes.setadapter(adapter_end);     enddes.setonitemselectedlistener(this); }  @override public void onitemselected(adapterview<?> arg0, view arg1, int arg2,         long arg3) {   }   @override public void onnothingselected(adapterview<?> arg0) {     // todo auto-generated method stub  } 

and this:

<string-array name="start_location">     <item>town a</item>     <item>town b</item>     <item>town c</item> </string-array>  <string-array name="end_location">     <item>town a</item>     <item>town b</item>     <item>town c</item> </string-array>  <string-array name="distance">     <item>0</item>     <item>67</item>     <item>282</item>     <item>251</item> </string-array>  <string-array name="time">     <item>0m</item>     <item>2h40m</item>     <item>11h10m</item>     <item>10h00m</item> 

so means: town town 0 , time 0, town town b 67km , time 2h40m, town town c 282km 11h10m , town b town c 251km , time 10h00m. (and needs work in reverse of list order well)

now how do this?

screen shot:

i think may hung on how data populates spinner works in android.

a spinner in android uses adapter fill spinner backing data. data collection of custom objects, strings, integers, etc... spinner can register listener when item selected spinner callback made indicates item selected.

a simple implementation use arrays of strings populate spinners. when selection made spinner1, you'd store value somewhere. when selection made spinner2 you'd store value , check see selection had been made spinner1. if selection had been made each spinner, you'd able distance / time each selection. simple way use if-else statements:

if (spinnerone.equals("denver")) {     if (spinnertwo.equals("new york") {         //print out distance equals 1280 miles     } else if (spinnertwo.equals("san fransisco") {         //etc...     } } else if (spinnerone.equals("new york") {     //etc... } 

the implementation describe above super simple way of doing , work illustration. there better ways of structuring data.