CollapsingToolbarLayout: Change home button color when expanded

Question

I have implemented the new CollapsingToolbarLayout from Chris Banes example code.

However, the images for the backdrop image view have all a white background. The toolbar theme is ThemeOverlay.AppCompat.Dark.ActionBar so the icons are white too, thus I can't see the home button when the CollapsingToolbarLayout is fully expanded.

With app:expandedTitleTextAppearance i can set the color for the title field. Is there also a possibility to set the color of the home buttons and menu icons?

Answer 1

Here is the example how I change my drawer and options icons color when layout is expanded and collapsed:

protected void onCreate(Bundle savedInstanceState) {
            AppBarLayout appBarLayout = (AppBarLayout) findViewById(R.id.app_bar_layout);
            appBarLayout.addOnOffsetChangedListener(new AppBarLayout.OnOffsetChangedListener() {
                @Override
                public void onOffsetChanged(AppBarLayout appBarLayout, int offset)
                {
                    Drawable upArrow = ResourcesCompat.getDrawable(getResources(), R.drawable.drawer_icon, null);
                    if (offset < -200)
                    {
                        upArrow.setColorFilter(Color.parseColor("#000000"), PorterDuff.Mode.SRC_ATOP);
                        getSupportActionBar().setHomeAsUpIndicator(upArrow);

                        Drawable drawable = ContextCompat.getDrawable(getApplicationContext(),R.drawable.option_menu_icon);
                        drawable.setColorFilter(Color.parseColor("#000000"), PorterDuff.Mode.SRC_ATOP);
                        toolbar.setOverflowIcon(drawable);
                    }
                    else
                    {

                        upArrow.setColorFilter(Color.parseColor("#ffffff"), PorterDuff.Mode.SRC_ATOP);
                        getSupportActionBar().setHomeAsUpIndicator(upArrow);
                        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

                        Drawable drawable = ContextCompat.getDrawable(getApplicationContext(),R.drawable.option_menu_icon);
                        drawable.setColorFilter(Color.parseColor("#ffffff"), PorterDuff.Mode.SRC_ATOP);
                        toolbar.setOverflowIcon(drawable);
                    }
        }
});