ExpandableListView sample from Google

Question

I just tried the current Google sample for ExpandableListiew:

This sample seem very simple and easy to use, but what I would like to do is to say that one of the cat

Answer 1

In general, if you want a specific area of your activity to be refreshed when you come back from another activity; you got to write in the onResume() method.

Steps: 1 – In the Activity you want it to be refreshed, override the onResume() method:

@Override
protected void onResume() {
    super.onResume();
    // TODO: PUT YOUR REFRESH CODE IN HERE
}

2- You will need to refresh your Expandable Adapter.

I suggest you take the same code you used to instantiate your expandable list and put it again, like follows:

SimpleExpandableListAdapter expandableListAdapter =
    new SimpleExpandableListAdapter(
        this,
        YourPrentsList, // List of your parent 
        R.layout.parents_layout,    // Layout for the Parents
        new String[] { "groupKey" },    // Key in the Group Data maps to display
        new int[] { 1 },        
        childrenList,   // List of the children
        R.layout.childs_layout, // Layout of the children
        new String[] { "keys"}, 
        new int[] { 1}  
    );
setListAdapter( expandableListAdapter );

I hope this solves your concern... Thanks,

Mohamed.