Android Spinner: Get the selected item change event

Question

How can you set the event listener for a Spinner when the selected item changes?

Basically what I am trying to do is something similar to this:

spinn         


        

Answer 1

It doesn't matter will you set OnItemSelectedListener in onCreate or onStart - it will still be called during of Activity creation or start (respectively).
So we can set it in onCreate (and NOT in onStart!).
Just add a flag to figure out first initialisation:

private Spinner mSpinner;
private boolean mSpinnerInitialized;

then in onCreate (or onCreateView) just:

mSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            public void onItemSelected(AdapterView adapterView, View view, int i, long l) {
                if (!mSpinnerInitialized) {
                    mSpinnerInitialized = true;
                    return;
                }

                // do stuff
            }

            public void onNothingSelected(AdapterView adapterView) {
                return;
            }
        });