CODEWITHSUNDEEP
androidfragmentnavigationbar
Chuang come fromTaiwan
Chuang come fromTaiwan

Reputation: 173

why fragment can't hide bottom bar

why fragment can't hide bottom bar

but activity can hide top and bottom

use the following code :

View decorView = getWindow().getDecorView();
int uiOptions = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION| View.SYSTEM_UI_FLAG_FULLSCREEN;
decorView.setSystemUiVisibility(uiOptions);     
getActionBar().hide();

fragment side didn't work

i try answer 1 but it still not work when i touch my fragment area it will show top and bottom ,let me confused a lot

following is my code: (fragment side)

@Override
public void onCreate(Bundle savedInstanceState) 
{

  View decorView = getActivity().getWindow().getDecorView();
  int uiOptions = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION|View.SYSTEM_UI_FLAG_FULLSCREEN;
  decorView.setSystemUiVisibility(uiOptions);    
  getActivity().getActionBar().hide();
} 

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) 
{
   View rootView = inflater.inflate(R.layout.fragment_ge, container, false);
   return rootView;
}

Upvotes: 1

Views: 2645

Answers (2)

Mohith7548
Mohith7548

Reputation: 1370

Ofcourse you can hide the bottom navigation bar. Here is my recycler scroll listener in my fragment. blogWriteBtn is my Floatingactionbutton, don't worry about that.

recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
        @Override
        public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
            super.onScrolled(recyclerView, dx, dy);
            if (dy > 0 && blogWriteBtn.getVisibility() == View.VISIBLE) {
                blogWriteBtn.hide();
                ((MainActivity)getActivity()).SetNavigationVisibiltity(false);
            } else if (dy < 0 && blogWriteBtn.getVisibility() != View.VISIBLE) {
                blogWriteBtn.show();
                ((MainActivity)getActivity()).SetNavigationVisibiltity(true);
            }
        }
    });

and in my MainActivity which has bottom navigation bar. I have added this method..

public void SetNavigationVisibiltity (boolean b) {
    if (b) {
        bottomNavigationView.setVisibility(View.VISIBLE);
    } else {
        bottomNavigationView.setVisibility(View.GONE);
    }
}

It worked perfectly fine for me. Here we called the public method SetNavigationVisibilty(boolean) of MainActivity. We can do like this.

Upvotes: 2

Jishin Dev
Jishin Dev

Reputation: 401

Chuang, try View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY instead of the other two flags that you have used. This was introduced in API 19 as per my knowledge and will require you to have the minimum SDK version to be same.

Upvotes: 0

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