CollapsingToolbarLayout disable draw down expansion

Question

I have a CollapsingToolbar that I have conditionally disabled. When the user loads the view under that condition, it just looks like a normal ToolBar object.

The only weird thing is that if they drag down, such as in a pull to refresh style action, the CollapsingToolbar expands, despite my wishes and code to the contrary!

Here is what I have, and the commented out code reflects what I have also tried

    appBar.setExpanded(false);
    appBar.setActivated(false);
    /*CollapsingToolbarLayout.LayoutParams p = (CollapsingToolbarLayout.LayoutParams)toolbar.getLayoutParams();
    p.setCollapseMode(CollapsingToolbarLayout.LayoutParams.COLLAPSE_MODE_PIN);
    toolbar.setLayoutParams(p);

    CoordinatorLayout.LayoutParams appBarLayoutParams = (CoordinatorLayout.LayoutParams) appBar.getLayoutParams();
    appBarLayoutParams.setBehavior(null);
    appBar.setLayoutParams(appBarLayoutParams);*/
    CoordinatorLayout.LayoutParams lp = (CoordinatorLayout.LayoutParams)appBar.getLayoutParams();
    lp.height = (int) getResources().getDimension(R.dimen.app_bar_height);

I want to disable the drag down expansion, and I didn't see a way to do it. This activity contains a recyclerview and that is what users primarily interact with.

Check out [this](http://stackoverflow.com/questions/35821502/toolbar-expands-on-swipe-down/36018411#36018411) — Sevle, Jul 22 '16 at 10:06
@Sevle you could repost it for the bounty if you are interested — CQM, Jul 25 '16 at 20:08
@CQM I'd rather not, it could be considered as duplication of information. I'm glad, as long as it helped you. — Sevle, Jul 27 '16 at 13:38

GensaGames · Answer 1 · 2016-07-22T10:00:35.840

4

I was closely with method. Expand layout behavior controls AppBarLayout. So you need update expand methods of that widget. Based on AppBarLayout Doc.

AppBarLayout appBarLayout;

//....

public void setExpandToolbar (boolean isEpand) {
    if (isExpand) {
       appBarLayout.setExpanded(true,true);
    } 
    else {
       appBarLayout.setExpanded(false,true);
    }
}

Let me know, about this issue. Because you can control expand via other solution. For example, by custom layout params.

AppBarLayout.LayoutParams p = (AppBarLayout.LayoutParams) 
toolbar.getLayoutParams();
p.setScrollFlags(0);
toolbar.setLayoutParams(p);

edited Jul 22 '16 at 10:00

answered Jul 22 '16 at 09:55

GensaGames

5,538
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for some reason adding `setScrollFlags(0)` makes it get stuck as expanded, even with my existing code of `setExpanded(false)` – CQM Jul 22 '16 at 18:44

score 1 · Answer 2 · answered Mar 11 '18 at 09:55

To prevent scrolling of RecyclerView or NestedScrollView from expanding or collapsing the CollapsingToolbarLayout.

// scrollView can be RecyclerView or NestedScrollView
ViewCompat.setNestedScrollingEnabled(scrollView, false)

https://code.luasoftware.com/tutorials/android/how-to-disable-or-lock-collapsingtoolbarlayout-collapse-or-expand/

score 1 · Answer 3 · answered Aug 06 '20 at 20:44

1

In kotlin looks like this: yourRV.isNestedScrollingEnabled = false

answered Aug 06 '20 at 20:44

GFPF

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CollapsingToolbarLayout disable draw down expansion

3 Answers3

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