Spinner's onItemSelected callback called twice after a rotation if non-zero position is selected

Question

When I create my activity, I setup a Spinner, assigning it a listener and an initial value. I know that the `onItemSelected` callback is called automatically during application initialization. What I find strange is that this happens twice when the device is rotated, causing me some problems that I will have to circumvent someway. This does not happen if the spinner initial selection is zero. I was able to isolate the issue, here's the simplest activity triggering it: ``` public class MainActivity extends Activity implements OnItemSelectedListener { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Log.i("Test","Activity onCreate"); setContentView(R.layout.activity_main); ((Spinner)findViewById(R.id.spinner1)).setSelection(2); ((Spinner)findViewById(R.id.spinner1)).setOnItemSelectedListener(this); } @Override public void onItemSelected(AdapterView<?> spin, View selview, int pos, long selId) { Log.i("Test","spin:"+spin+" sel:"+selview+"…

Accepted Answer

Managed to find a solution in another stackoverflow question:

```
spinner.post(new Runnable() {
    public void run() {
        spinner.setOnItemSelectedListener(listener);
    }
});
```

Spinner's onItemSelected callback called twice after a rotation if non-zero position is selected

Solution

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