private void onDataChanged() {
adapterDataCount = adapter.getCount();
int activeIndex;
if (adapterIndex < 0) {
activeIndex = 0;
} else {
activeIndex = Math.min(adapterIndex, adapterDataCount - 1);
}
releaseViews();
setSelection(activeIndex);
}
public void setAdapter(Adapter adapter, int initialPosition) {
if (this.adapter != null) {
this.adapter.unregisterDataSetObserver(adapterDataObserver);
}
Assert.assertNotNull("adapter should not be null", adapter);
this.adapter = adapter;
adapterDataCount = adapter.getCount();
adapterDataObserver = new MyDataSetObserver();
this.adapter.registerDataSetObserver(adapterDataObserver);
if (adapterDataCount > 0) {
setSelection(initialPosition);
}
}