CODEWITHSUNDEEP
androidandroid-layoutandroid-fragmentsmaterial-designandroid-support-design
syloc
syloc

Reputation: 4719

Changing Toolbar and CollapsingToolbarLayout scroll flags programmatically

I have a single Activity android app with lots of fragments. When I'm showing a list screen I want to use the Toolbar with the, app:layout_scrollFlags="scroll|enterAlways" property. And in the detail fragments I want to use the CollapsingToolbarLayout with an image in it. Since it's a single Activity app, I have only one Toolbar. Is it possible to modify my layout programmatically to suit both cases?

Upvotes: 15

Views: 10044

Answers (3)

Julio Cesar
Julio Cesar

Reputation: 191

Works for me.

public void enableToolBarScrolling(CollapsingToolbarLayout toolbar) {
    AppBarLayout.LayoutParams params = (AppBarLayout.LayoutParams) toolbar.getLayoutParams();
    params.setScrollFlags(SCROLL_FLAG_SCROLL | SCROLL_FLAG_ENTER_ALWAYS);
    toolbar.setLayoutParams(params);
}

Upvotes: 0

Vivek Pratap Singh
Vivek Pratap Singh

Reputation: 1662

I found it working

public void disableToolBarScrolling() {
    CollapsingToolbarLayout toolbar = findViewById(R.id.collap_toolbar);
    AppBarLayout.LayoutParams params = (AppBarLayout.LayoutParams) toolbar.getLayoutParams();
    params.setScrollFlags(0);
}

public void enableToolBarScrolling() {
    CollapsingToolbarLayout toolbar = findViewById(R.id.collap_toolbar);
    AppBarLayout.LayoutParams params = (AppBarLayout.LayoutParams) toolbar.getLayoutParams();
    params.setScrollFlags(SCROLL_FLAG_SCROLL | SCROLL_FLAG_ENTER_ALWAYS);
}

Upvotes: 11

natario
natario

Reputation: 25194

Yes. Let's say you are going from the CollapsingToolbarLayout fragment to the Toolbar one.

  1. You collapse your AppBarLayout using AppBarLayout.setExpanded(false);

  2. You change the scroll flags to fit your needs.

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

    Same goes for the CollapsingToolbarLayout if necessary. I guess it should be something like:

    collapsingToolbarParams.setScrollFlags(0); //no flags for ctl
toolbarParams.setScrollFlags(SCROLL_FLAG_SCROLL | SCROLL_FLAG_ENTER_ALWAYS); //new flags for toolbar

Upvotes: 16

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