CODEWITHSUNDEEP
android
Alexander Oleynikov
Alexander Oleynikov

Reputation: 19378

How to get an item's position from item's ID in android spinner?

I need to get an item's position in spinner knowing it's ID. I've tried to do it with Spinner and SpinnerAdapter classes but there are no corresponding methods there.

Thanks,

Aleksander

Upvotes: 4

Views: 18884

Answers (5)

Hussain Akhtar Wahid 'Ghouri'
Hussain Akhtar Wahid 'Ghouri'

Reputation: 6617

well if u use this u can get the position no of the item then u can match with ur array of values

public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
system.out.println(arg2);
}

here arg2 is the index of the selected items position , rest i hope u can manage

Upvotes: 1

Vaughan Wynne-Jones
Vaughan Wynne-Jones

Reputation: 61

Here's how I did it last night for the first time:

Spinner mySpn = (Spinner) findViewById(R.id.my_spinner);
String spnItem = (String) mySpn.getItemAtPosition(mySpn.getSelectedItemPosition());

Upvotes: 6

Joe
Joe

Reputation: 42155

Try this:

static final int getAdapterPositionById(final Adapter adapter, final long id) throws NoSuchElementException {
    final int count = adapter.getCount();

    for (int pos = 0; pos < count; pos++) {
        if (id == adapter.getItemId(pos)) {
            return pos;
        }    
    }

    throw new NoSuchElementException();
}

It's generic enough to work for any adapter type that supports ids (e.g., implements Adapter#getItemId(int position) in a meaningful way)

Upvotes: 6

Vamsi
Vamsi

Reputation: 5993

you can query the selected position by Spinner.getSelectedItemPosition()

or alternatively you will get the selected item position if you override the method onItemSelected()

Upvotes: 4

molnarm
molnarm

Reputation: 10031

You create the Spinner items via your SpinnerAdapter, so you determine the position of the items. If you create the Spiner items from some kind of collection, you could search that for the ID.

Upvotes: 2

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