How do I set theSupportActionBar () in multiple fragments?
I have two pieces of support sitting inside AppCompatActivity
. By design, each of them has a unique toolbar and optional menus. AppCompatActivity
does not have a toolbar in it, as they are included in every snippet.
In each fragment, I am setHasOptionsMenu(true);
in onCreate ().
In onCreateView () I call ((AppCompatActivity)getActivity()).setSupportActionBar(toolbar);
where the toolbox is the object associated with the xml toolbox item.
In onCreateOptionsMenu()
, I first make a call to super, then I call menu.clear () and finally inflate the menu with inflater.inflate (R.menu.searchbar_menu, menu);
If it fails, it is called ((AppCompatActivity)getActivity()).setSupportActionBar(toolbar);
in both fragments. In this case, the parameters will be displayed only in the second fragment, and not in the first one. If I name it with just one snippet, the options show up as expected in only one snippet. Of course, if I don't name it in any of them, they won't show up at all.
Here is my code. Both snippets are essentially identical except for the bloated menus:
public class FeedFragment extends Fragment implements FeedView{
@BindView(R.id.toolbar)
Toolbar toolbar;
FeedPresenter presenter;
static final String TAG = "FEED_FRAGMENT";
/*
* Some boilerplate fragment setup code
*/
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_feed, container, false);
ButterKnife.bind(this, view);
((AppCompatActivity)getActivity()).setSupportActionBar(toolbar);
setupToolar();
return view;
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
menu.clear();
inflater.inflate(R.menu.searchbar_menu, menu);
}
private void setupToolbar(){
toolbar.setPadding(0,ScreenUtil.getStatusBarHeight(this.getActivity()),0,0);
toolbar.setTitle("");
}
/*
* Other logic code unique to each fragment
*/
Does anyone know if I can set both snippets for my toolbar options?
Thanks in advance.
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When you call getActivity()
, it returns the same instance of your Activity
. The second fragment was initialized later Activity
than the first fragment, so it can only support the action bar in the second fragment.
You can try this
@Override
public void setUserVisibleHint(boolean isVisibleToUser) {
super.setUserVisibleHint(isVisibleToUser);
if (isVisibleToUser) {
AppCompatActivity baseActivity = (AppCompatActivity) getContext();
baseActivity.setSupportActionBar(yourToolbar);
}
}
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What worked for me was setting suppoerActionBar according to whichever fragment is currently visible. You can use the following code:
@Override
public void onHiddenChanged(boolean hidden) {
super.onHiddenChanged(hidden);
if(!hidden){
((AppCompatActivity) getActivity()).setSupportActionBar(toolbar);
}
}
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