I have 2 spinners in my activity as category and sub-category.
When i choose some value from category spinner
I want to display its related values/data in sub-category spinner.
How can i perform this?
public class SellActivity extends Activity {
private Spinner spinner1, spinner2;
private String selectedOption;
List<String> addItemList = new ArrayList<String>();
String[] elCat = new String[] {"Mobile", "Television", "Computers","Home Appliances","Games","Others"};
String[] veCat = new String[] {"Cars", "Buses", "Motorcycles","Others"};
String[] reCat = new String[] {"Apartment", "Plot", "Office","Paying Guest","Others"};
String[] hCat = new String[] {"Books", "Furniture", "Musical Instrument","Watches","Others"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sell);
spinner1 = (Spinner) findViewById(R.id.categorySellSpinner);
spinner2 = (Spinner) findViewById(R.id.subCategorySpinner);
selectedOption=String.valueOf(spinner1.getSelectedItem());
System.out.println(selectedOption);
spinner1.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
// TODO Auto-generated method stub
if(selectedOption.equals("Electronics"))
{
Collections.addAll(addItemList, elCat);
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(SellActivity.this,android.R.layout.simple_spinner_item, addItemList);
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
dataAdapter.notifyDataSetChanged();
spinner2.setAdapter(dataAdapter);
}
else if(selectedOption.equals("Home - Lifestyle"))
{
Collections.addAll(addItemList, hCat);
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(SellActivity.this,android.R.layout.simple_spinner_item, addItemList);
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
dataAdapter.notifyDataSetChanged();
spinner2.setAdapter(dataAdapter);
}
else if(selectedOption.equals("Vehicles"))
{
Collections.addAll(addItemList, veCat);
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(SellActivity.this,android.R.layout.simple_spinner_item, addItemList);
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
dataAdapter.notifyDataSetChanged();
spinner2.setAdapter(dataAdapter);
}
else if(selectedOption.equals("Real Estate"))
{
Collections.addAll(addItemList, reCat);
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(SellActivity.this,android.R.layout.simple_spinner_item, addItemList);
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
dataAdapter.notifyDataSetChanged();
spinner2.setAdapter(dataAdapter);
}
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
}
}
Here is the whole code.
Data is not changing….plus old data adds onto it
Answer
Just do like this in every if condition :-
Collections.addAll(addItemList, elCat);
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String(this,android.R.layout.simple_spinner_item, addItemList);
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
dataAdapter.notifyDataSetChanged();
spinner2.setAdapter(dataAdapter);
Source: http://stackoverflow.com/questions/17922979/change-spinner-data-android
