設定画面を開く

Swift3.0

//
//  ViewController.swift
//  Utility000_3.0
//
//  Created by KimikoWatanabe on 2016/08/22.
//  Copyright © 2016年 FaBo, Inc. All rights reserved.
//

Swift 2.3

//
//  ViewController.swift
//  Utility000_2.3
//
//  Created by KimikoWatanabe on 2016/08/22.
//  Copyright © 2016年 FaBo, Inc. All rights reserved.
//

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        // UIボタンを生成.
        let myButton = UIButton(frame: CGRectMake(0,0,100,100))
        myButton.backgroundColor = UIColor.redColor()
        myButton.layer.masksToBounds = true
        myButton.setTitle("設定画面", forState: .Normal)
        myButton.layer.cornerRadius = 50.0
        myButton.layer.position = CGPoint(x: self.view.frame.width/2, y: self.view.frame.height/2)
        myButton.addTarget(self, action: #selector(ViewController.onClickMyButton(_:)), forControlEvents: .TouchUpInside)
        self.view.addSubview(myButton)
    }

    //ボタンイベント.
    func onClickMyButton(sender: UIButton){

        //設定用URL.
        let url = NSURL(string: UIApplicationOpenSettingsURLString)

        //設定画面を呼び出す.
        UIApplication.sharedApplication().openURL(url!)
    }

}

2.3と3.0の差分

• UIColorの参照方法が変更(UIColor.grayColor()->UIColor.gray)
• CGRect,CGPointの初期化方法の変更(CGRectMake,CGPointMakeの廃止)

Reference

• NSURL Class
  • https://developer.apple.com/reference/foundation/nsurl
• UIApplication Class
  • https://developer.apple.com/reference/uikit/uiapplication