Getting Started With iOS for a C# Programmer - Part Two - Running the Simulator

November 26, 2017

The purpose of this post is to take the code that we created here and run it in the simulator.

Leaving the Playground

To a .Net programmer, this seems like an alien concept but, depending on the mode that you run Xcode in, it results in a different IDE. If, instead of selecting Plaground, we select “Create an Xcode Project”, the whole app experience changes:

xcode sim 1

There are a lot more options available now; but let’s stick to the most basic:

xcode sim 2

The created Single View App should look like this in structure:

xcode sim 3

The target of this post is simply to take the few lines of code that we wrote in part one, and have them run on a simulator.

The first thing it does is launch the ViewController, so let’s take the code that we created in the first part, and add it directly to the ViewController; the new controller will look like this:

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        // Do any additional setup after loading the view, typically from a nib.
        let x = UILabel()
        x.text = "test"
        x.textColor =
        x.frame = CGRect(x: 5, y: 5, width: 80, height: 20)
        let v = UIView()
        v.frame = CGRect(x: 0, y: 0, width: 100, height: 100);
        v.backgroundColor = UIColor.white
        self.view = v

    override func didReceiveMemoryWarning() {
        // Dispose of any resources that can be recreated.


There are a couple of changes - firstly, we no longer reference Playground, and secondly, the active view is set here:

self.view = v

When we run this, we get the simulator appearing, and the text appears (as we might expect):

xcode sim 4

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