Question

I wanted to display my data into android spinner from database.

I used two spinner..
2nd spinner should reflect once 1st spinner item is selected, every thing is working fine..data is loaded into the second spinner, but not displaying into 2nd spinner when 2nd spinner item is selected.

Spinner1 = (Spinner)findViewById(R.id.createProfileCitySpinnerId);
Spinner2 = (Spinner)findViewById(R.id.createProfileStateSpinnerId);

//for 1st spinner.....(working)
final List<String> list1 = new ArrayList<String>();

ArrayAdapter<String> adapter1 = new ArrayAdapter<String>(this, 
                 android.R.layout.simple_spinner_item,list1);
Spinner1.setAdapter(adapter1);

//for second spinner...
final List<String> list2 = new ArrayList<String>();
Spinner1.setOnItemSelectedListener(new OnItemSelectedListener(){

    @Override
    public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) 
    {
         if(//some condition using id)
         {                     
            list2.add(stateCursor.getString(1));                                
         }
   }    
   @Override
   public void onNothingSelected(AdapterView<?> parent)
   {                    
   }    
});

//everything is working data is loading, but not display once item is selected on 2nd spinner
ArrayAdapter<String> adapter2 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item,list2);
stateSpinner.setAdapter(adapter2);

Answer 1

You need to add the element directly to the adapter (not to list2), the ArrayAdapter keeps its own internal data. Try this code on your onItemSelected:

adapter2.add(stateCursor.getString(1));
adapter2.notifyDataSetChanged();