Select all items within ListView

Question

I am currently working on an Android project. I am using a ListView and using a context action bar and I am successfully selecting each item and showing a count of how many items have been selected within the list view.

Within the context bar I have a menu option for Select All but I don't know how I can make sure that every item within the list view is selected.

I can't seem to find anything on Google, anything about this type of thing and selectable ListViews seem to be very well hidden.

Answer 1

You can check listview items one by one:

for ( int i=0; i < listview.getAdapter().getCount(); i++) {
   listview.setItemChecked(i, true);
}

If you only want to select what is on screen, then use listview.getChildCount().

If you are using fragments, you will need to use getListAdapter().getCount().