protected void setBackgroundColor(@ColorRes int colorId) {
        View scrollView = findViewById(R.id.scrollview);
        if (scrollView != null) {
            scrollView.setBackgroundResource(colorId);
        }
    }
Set the background color for the description text.
MultiWindowPlayground/Application/src/main/java/com/android/multiwindowplayground/activities/LoggingActivity.java