HW-App畫面解鎖練習

1.主要應用的View，Label，Button，Image

使用四個image view 將其設定系統內建的star icon當作密碼輸入圖示.

未輸入密碼時圖示

輸入密碼時icon會變更圖示以表示輸入

將11個Button 納到View下

2.拉Outlet

3.撰寫相關func

//設定密碼為9527
var passwd = "9527"
var entercode = ""
//設定密碼輸入時icon變動
func imageChange() {
switch entercode.count{
case 1:
passwdImageViews[0].isHighlighted = true
passwdImageViews[1].isHighlighted = false
passwdImageViews[2].isHighlighted = false
passwdImageViews[3].isHighlighted = false
case 2:
passwdImageViews[0].isHighlighted = true
passwdImageViews[1].isHighlighted = true
passwdImageViews[2].isHighlighted = false
passwdImageViews[3].isHighlighted = false
case 3:
passwdImageViews[0].isHighlighted = true
passwdImageViews[1].isHighlighted = true
passwdImageViews[2].isHighlighted = true
passwdImageViews[3].isHighlighted = false
case 4:
passwdImageViews[0].isHighlighted = true
passwdImageViews[1].isHighlighted = true
passwdImageViews[2].isHighlighted = true
passwdImageViews[3].isHighlighted = true
checkPasswd()
default:
passwdImageViews[0].isHighlighted = false
passwdImageViews[1].isHighlighted = false
passwdImageViews[2].isHighlighted = false
passwdImageViews[3].isHighlighted = false
}
}
//輸入完密碼檢查是否正確
func checkPasswd() {
if entercode == passwd {
let vc = UIAlertController(title: "Correct", message: "Welcome Back", preferredStyle: .alert)
let action = UIAlertAction(title: "OK", style: .default) { (_) in
self.reset()
}
vc.addAction(action)
present(vc, animated: true,completion: nil)
}else{
let vc = UIAlertController(title: "Worng", message: "passwd error", preferredStyle: .alert)
let action = UIAlertAction(title: "OK", style: .cancel, handler: nil)
vc.addAction(action)
present(vc ,animated: true, completion: reset)
}
}
//重置密碼
    func reset() {
passwdImageViews[0].isHighlighted = false
passwdImageViews[1].isHighlighted = false
passwdImageViews[2].isHighlighted = false
passwdImageViews[3].isHighlighted = false
entercode = ""
}

4.拉Action