Palette API that fetches a dynamic color from a Bitmap and also includes fallback colors on failure.

TabsHeaderActivity.java

try {
    Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.header);
    Palette.from(bitmap).generate(new Palette.PaletteAsyncListener() {
        @SuppressWarnings("ResourceType")
        @Override
        public void onGenerated(Palette palette) {

            int vibrantColor = palette.getVibrantColor(R.color.primary_500);
            int vibrantDarkColor = palette.getDarkVibrantColor(R.color.primary_700);
            collapsingToolbarLayout.setContentScrimColor(vibrantColor);
            collapsingToolbarLayout.setStatusBarScrimColor(vibrantDarkColor);
        }
    });

} catch (Exception e) {
    // if Bitmap fetch fails, fallback to primary colors
    Log.e(TAG, "onCreate: failed to create bitmap from background", e.fillInStackTrace());
    collapsingToolbarLayout.setContentScrimColor(
            ContextCompat.getColor(this, R.color.primary_500)
    );
    collapsingToolbarLayout.setStatusBarScrimColor(
            ContextCompat.getColor(this, R.color.primary_700)
    );
}