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POAdding items to a ListView from a Spinner doesn't work
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  1. POAdding items to a ListView from a Spinner doesn't work
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    copied!<p>I have two ArrayLists in my app; one containing a list of all stations (<code>AllStations</code>) and one containing a list of stations that the user has select (<code>MyStations</code>). The user will select the stations from the spinner, which contains all items from the AllStations arraylist, and it will add them the <code>myStations</code> arraylist. There is a list view which displays the data from the <code>myStations</code> arrayList. </p> <p>At the moment when a user selects a station to add to the <code>mystations</code> arraylist, it adds it to "myStations" but the listview does not refresh. I have tried <code>adapter.notifyDataSetChanged()</code> I have spend a couple of day googling etc. and haven't found any reason why it's not refreshing. Can anyone help me?</p> <pre><code>public class MyStations extends Activity{ ListView personalStations; Spinner spinner; ArrayList&lt;String&gt;AllStations = new ArrayList&lt;String&gt;(); ArrayList&lt;String&gt;MyStations = new ArrayList&lt;String&gt;(); ArrayAdapter&lt;String&gt; StationNames; ArrayAdapter&lt;String&gt; myStationNames; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.my_stations); assignStations(); spinner = (Spinner) findViewById(R.id.spinner1); StationNames = new ArrayAdapter&lt;String&gt;(this, android.R.layout.simple_list_item_1, AllStations); spinner.setAdapter(StationNames); spinner.setOnItemSelectedListener(new OnItemSelectedListener() { public void onItemSelected(AdapterView&lt;?&gt; arg0, View arg1, int arg2, long arg3) { String selectedStation = spinner.getSelectedItem().toString(); MyStations.add(selectedStation); myStationNames.notifyDataSetChanged(); TextView txt1 = (TextView) findViewById(R.id.textView1); int size = MyStations.size(); String sizes= String.valueOf(size); txt1.setText(sizes); } public void onNothingSelected(AdapterView&lt;?&gt; arg0) { // TODO Auto-generated method stub } }); personalStations = (ListView) findViewById(R.id.myStnList); myStationNames = new ArrayAdapter&lt;String&gt;(this, android.R.layout.simple_list_item_1, MyStations); personalStations.setAdapter(new ArrayAdapter&lt;String&gt;(MyStations.this, android.R.layout.simple_list_item_1, MyStations)); } public void assignStations(){ ImportData stationData = new ImportData(); stationData.importStations(); AllStations = stationData.getStationNames(); } } </code></pre>
 

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