ios - How to create a line width of 0.5 pixels

Question

In iOS 7, the table view's separator line is thinner than previous iOS, and it looks like its 0.5 px width.

I need to split a cell in 2, with a similar separator line (only vertically) and I want this line to be the same width as the regular separator line.

So I'm wondering what is the best way to add such a line?

If I use a UIView and set its width to 0.5 it won't be visible, and if I set its width to 1.0, then of course I will get a line width of 1.0px not 0.5px.

I tried to use a resource with a retina size of 1.0px but it didn't work either

question from:https://stackoverflow.com/questions/21552115/how-to-create-a-line-width-of-0-5-pixels

Answer 1

You set the width as 0.5 - or to make it always 1 pixel then set it to (1.0 / [UIScreen mainScreen].scale)

I've done this before and it's worked fine

I think the reason you can't see it is that you are centering the line exactly in the middle of the screen, which will make the line's origin (320 - 0.5) / 2.0, being an X origin of 159.75 - the 0.75 may be messing things up - or the cell is removing the background color of your view