Define a menu in res/menu
<?xml version="1.0" encoding="utf-8"?>
<menu
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="@+id/first_item_id"
android:orderInCategory="100"
android:title="@string/first_item_string"
android:icon="@drawable/first_item_icon"
app:showAsAction="ifRoom"/>
<item
android:id="@+id/second_item_id"
android:orderInCategory="110"
android:title="@string/second_item_string"
android:icon="@drawable/second_item_icon"
app:showAsAction="ifRoom"/>
</menu>For more options of configuration refer to: Menu resource
Inside Activity:
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
///Override defining menu resource
inflater.inflate(R.menu.menu_resource_id, menu);
super.onCreateOptionsMenu(menu, inflater);
}
@Override
public void onPrepareOptionsMenu(Menu menu) {
//Override for preparing items (setting visibility, change text, change icon...)
super.onPrepareOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
//Override it for handling items
int menuItemId = item.getItemId();
switch (menuItemId) {
case: R.id.first_item_id
return true; //return true, if is handled
}
return super.onOptionsItemSelected(item);
}For invoking the methods above during showing the view, call getActivity().invalidateOptionsMenu();
Inside Fragment one additional call is needed:
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
setHasOptionsMenu(true);
super.onCreateView(inflater, container, savedInstanceState);
}