Xcode 6: iOS Swift. How to get in game frame rate (fps)?

Question

In my current Swift project for iOS, I need to divide a variable by current FPS on the device I am running it on. In my case, the program is running on my iPad mini. I don't see a function, or any capability to do this. Any ideas? Thanks in advance!

There is however, in "GameViewController.swift" a line:

skView.showsFPS = true

But I cannot access this value.

Answer 1

I never used iOS before, but on android I used something like this on the onDraw function:

dt = currentTime - lastTime;
lastTime = currentTime;         
tempDt += dt;
fps += 1;
if (tempDt >= 1000) {
    Log.d("FPS", String.format("%d", fps));
    tempDt = 0;
    fps = 0;
}