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let alertController = UIAlertController(
title: “提示”,
message: “請輸入價格或數量”,
preferredStyle: .alert)

// 建立[確認]按鈕
let okAction = UIAlertAction(
title: “確認”,
style: .default,
handler: {
(action: UIAlertAction!) -> Void in
print(“按下確認後的動作”)
})

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