Question

I would like to be able to append action bar items from my fragments.

For example in Landscape mode I have a list of items, and if clicked a page of information about that item appears.

The list can be changed by clicking the dropdown in the action bar to select a category of list.

Once a list item is clicked the details fragment is populated. I then want 3 tabs to be appended into the action bar so that the user can select which page of details is shown for that item, namely: “Details (default)”;”Map”; and “Features”.

In my fragment I can set setHasOptionsMenu(true) and then add the new tabs using the onCreateOptionsMenu call. This however deletes my dropdown which i still want displayed.

How does one simply append ActionBar Items..?

Thanks

Answer 1

I just call the fragment’s onCreateOptionsMenu from my activity’s onCreateOptionsMenu. You can add an if statement to decide to call the fragment’s version or default call the fragment’s onCreateOptionsMenu and put the if statement there to decide what to add. then, whenever it needs to change, just call invalidateOptionsMenu.

You will probably have to remove the setHasOptionsMenu call.

Activity:

public boolean onCreateOptionsMenu(Menu m)
{
    // insert activity options
    if (needFragmentOptions) {
       fragment.onCreateOptionsMenu(m);
    }
    return true;
}

Fragment:

public boolean onCreateOptionsMenu(Menu m)
{
   // insert fragment options
   return true;
}