Android restore listview selected position

Question

This is very trivial and am sure i am missing something basic here

i have a activity with a listview (populated thru ArrayAdapter )

in the adapter I have implemented my onClick listener that launches another activity.

Based on a few suggestion i have save the state of the getSelectedItemPosition in the onSaveInstanceState which i have overridden

The problem is when i am navigate back to the mainactivity, i am expecting onRestoreInstanceState to be called where i can set the setPosition to the position I have stored in onSaveInstanceState , but its not called.

So the end results is that when i can come back to the mainactivity the selection is rolled to the first row. which is not a very good user experience.

Answer 1

You can achieve this by saving the lastItemSelected position in a int field of your Activity called lastItemSelected (remember to update this variabe every time you click on a element of the list)

Save last item

yourListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                lastItemSelected = position;

            }
        });

Then on the onResume() lifecycle method do:

yourListView.setSelection(lastItemSelected)

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onSaveInstanceState and onRestoreInstance etc etc are method used for restore your activity state when it is forcefully terminated by the OS.