I’m developing a simple Android application that would have an action bar on the top of the screen:

I already have the bar with the gradient background (drawable) and the arrow icon set but I’m not sure how to create that two pixel width splitter.
The color of the left column of pixels is #5e5e5e and the right one is #181818.
What is the best way (optimized for performance) to create such a reusable splitter?
The best would be to make this splitter as a widget.
Any help would be greatly appreciated!
UPDATE:
The bar is a LinearLayout with a gradient background and the arrow is a single transparent ImageView.
I ended up creating a 2×1 pixel PNG image and use it as a background of a View widget: