私はそれはあなたがUIViewController
クラスの任意の場所でそれを使用して:)
extension UIViewController {
let kAPPNAME = "Your App name"
func showOkAlert(_ msg: String) {
let alert = UIAlertController(title:
kAPPNAME, message: msg, preferredStyle: .alert)
let okAction = UIAlertAction(title: "OK", style: .default, handler: nil)
alert.addAction(okAction)
present(alert, animated: true, completion: nil)
}
func showOkAlertWithHandler(_ msg: String,handler: @escaping()->Void){
let alert = UIAlertController(title: kAPPNAME, message: msg, preferredStyle: .alert)
let okAction = UIAlertAction(title: "OK", style: .default) { (type) -> Void in
handler()
}
alert.addAction(okAction)
present(alert, animated: true, completion: nil)
}
func showAlertWithActions(_ msg: String,titles:[String], handler:@escaping (_ clickedIndex: Int) -> Void) {
let alert = UIAlertController(title: kAPPNAME, message: msg, preferredStyle: .alert)
for title in titles {
let action = UIAlertAction(title: title, style: .default, handler: { (alertAction) in
//Call back fall when user clicked
let index = titles.index(of: alertAction.title!)
if index != nil {
handler(index!+1)
}
else {
handler(0)
}
})
alert.addAction(action)
}
present(alert, animated: true, completion: nil)
}
func showOkCancelAlertWithAction(_ msg: String, handler:@escaping (_ isOkAction: Bool) -> Void) {
let alert = UIAlertController(title: kAPPNAME, message: msg, preferredStyle: .alert)
let okAction = UIAlertAction(title: "OK", style: .default) { (action) -> Void in
return handler(true)
}
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel) { (action) -> Void in
return handler(false)
}
alert.addAction(cancelAction)
alert.addAction(okAction)
present(alert, animated: true, completion: nil)
}
}
class FirstViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
//Only Info
self.showOkAlert("Hello")
//Info with Okay button
self.showOkAlertWithHandler("Hello Again") {
print("Tap to Okay")
}
//Show alert with Okay and cancel
self.showOkCancelAlertWithAction("Hello with Cancel") { (isOk) in
if isOk {
print("Okay")
}
else {
print("Cancel")
}
}
//Show alert with actions
self.showAlertWithActions("Hello with action", titles: ["Allow","Don't Allow", "Cancel"]) { (tapIndex) in
if tapIndex == 1 {
print("Allow")
}
}
}
}
を使用していますを楽しむことができ、ほとんどのアプリケーションで頻繁に使用されている、あなたと共有していますいくつかの拡張メソッド