Android is pretty tricky to deal with at times, and surprisingly difficult for something very simple..
..like adding a filler between columns in a TableLayout. "Gotta be simpler!" I thought after having spent countless minutes reading up over countless suggestions and recipes.
So I took the path of just creating an empty filler.png image in the mspaint, just a vertical bar, and inserting it programmatically:
ImageView dividerView = new ImageView(this); dividerView.setImageResource(R.drawable.filler);
Then added this to a TableRow object which subsequently should be added to the aforementioned TableLayout.
Before adding a divider:
After adding a divider: