Apple Watchでカウントアプリ

InterfaceController.swift

import WatchKit
import Foundation


class InterfaceController: WKInterfaceController {

    @IBOutlet var label: WKInterfaceLabel!
    var count:Int = 0
    override func awake(withContext context: Any?) {
        super.awake(withContext: context)

    }

    override func willActivate() {
        // This method is called when watch view controller is about to be visible to user
        super.willActivate()
        let fontSize = UIFont.systemFont(ofSize: 90)
        let text = String(count)
        let attrStr = NSAttributedString(string: text, attributes:[NSFontAttributeName:fontSize])
        label.setAttributedText(attrStr)

    }

    override func didDeactivate() {
        // This method is called when watch view controller is no longer visible
        super.didDeactivate()
    }
    @IBAction func push() {
        count += 1
        let fontSize = UIFont.systemFont(ofSize: 90)
        let text = String(count)
        let attrStr = NSAttributedString(string: text, attributes:[NSFontAttributeName:fontSize])
        label.setAttributedText(attrStr)
    }

}