初心者必見！iOSアプリ作成から公開まで徹底解説！
まゆげじおの備忘録
〜プログラミング初心者がiPhoneアプリを開発し公開するまで〜
まゆげじおの備忘録
〜プログラミング初心者がiPhoneアプリを開発し公開するまで〜
今回は青色になったボタンをもう一度押すとグレイに戻ってしまうところを修正したいと思います！
動作環境は下記の通りです！
Xcode Version 12.5 Swift version 5.4
完成動画はこちらです！
まずタップしたボタンがアクティブなボタンかどうか判定する必要があります。
押されたボタンのタグ番号がRealmに保存されているかどうかで判定できそうです！
そして条件分岐で、保存されていれば「解除しますか？」のアラート出したいと思います。
保存されていなければ今まで通り青に変わりかけた色をグレイに戻してあげます。
アラートを出してOKボタンを押したらRealmからデータを消すところまで実装したいと思います！
Realmのデータを検索する方法はググればすぐ出てくると思いますが、こちらの記事は参考になるかと思います。
今回修正する箇所はMainViewController.swiftのlongPressed()です！
コードは下記です〜！
//長押し機能
@objc func longPressed(_ sender: UILongPressGestureRecognizer) {
if sender.state == .began {
print("ボタン押した")
btnTag = sender.view!.tag
UIView.animate(withDuration: 2) {
self.buttonArray[sender.view!.tag - 1].backgroundColor = UIColor.blue
}
startTimer()
} else if sender.state == .ended {
print("ボタン離した")
if longTapOK == false {
//realmの呼び出し
let realm = try! Realm()
//if文で条件分岐
if realm.objects(Btn365.self).filter("tagNum == \(sender.view!.tag)").first != nil {
print("アラートを出す")
} else {
//色をグレイに戻す
UIView.animate(withDuration: 0.1) {
self.buttonArray[sender.view!.tag - 1].backgroundColor = UIColor.lightGray
}
}
//タイマーストップ
timer.invalidate()
} else {
print("ロングタップ成功")
longTapOK = false
}
}
}今回修正した部分は16行目からですね！
とりあえずRealmを呼び出してます！
データの検索部分が18行目です！
“tagNum == \(sender.view!.tag)”
この部分で保存されてるデータのタグ番号と押したボタンの番号を比較しています。
データがnilじゃなかったら（つまり検索にヒットしたら）アラートを出す。
データがなかったら色をグレイに戻しています。
こういう検索して条件分岐するって言うのは以前作ったアプリでもすごく使ったので覚えておくと良いと思います！！
アラートって普通UIAlertControllerを使うと思うんですけど、カスタマイズしたくて調べても全然良い記事がなくて、カスタマイズ難しくね？ってなったのでUIAlertControllerは使っていません。
んで何を使っているかと言うと、DOAlertControllerです！
こちらを作ってくれた方、本当に感謝してます。ありがとうございます。
詳しい使い方はこちらからどうぞ！
DOAlertControllerの導入方法がいまいちわからない人はこの記事の最後に載せますね！
では下記のコードをlongPressed()のアラートを出す部分に追加しましょう！
print("アラートを出す")
//アラートのタイトルやメッセージの設定
let alertController = DOAlertController(title: "解除しますか？", message: "", preferredStyle: .alert)
//キャンセルアクションの設定
let cancelAction = DOAlertAction(title: "Cancel", style: .cancel, handler: nil)
//OKアクションの設定
let okAction = DOAlertAction(title: "OK", style: .default) { action in
print("OKボタンが押された")
}
//キャンセルとOKのアクションを追加
alertController.addAction(cancelAction)
alertController.addAction(okAction)
//アラートを表示
present(alertController, animated: true, completion: nil)
色とかデザインは今度実装しますので今回はとりあえず機能だけつけます。
上記のコードに書いてるコメントの通りなので説明する事もないですね(^^;
ではビルドして一度動きを試してみて下さい！
青色ボタンを押した時にアラートが表示されて
Cancelを押すと戻って、OKを押すと「OKボタンが押された」と出力されるはずです！
ではアラートが出てOKボタンを押した時の処理を実装したいと思います！
まずはRealmDB.swiftファイルに下記コードを追加します。
//データの消去
static func delete(tag: Int) {
if let del = Btn365.realm.objects(Btn365.self).filter("tagNum == \(tag)").first {
try! Btn365.realm.write {
Btn365.realm.delete(del)
}
}
}処理の流れとしては、delete(tag: Int)メソッドの引数に押したボタンのタグ番号を設定しています。
そして、先ほどと同じようにRealmのデータを検索してヒットしたデータを削除してます！
あとはdelete(tag: Int)メソッドをアラートのOKボタンが押された時に実行すればOKです！
コードは下記です！
//OKアクションの設定
let okAction = DOAlertAction(title: "OK", style: .default) { action in
print("OKボタンが押された")
Btn365.delete(tag: sender.view!.tag)
self.buttonArray[sender.view!.tag - 1].backgroundColor = UIColor.lightGray
}5行目でRealmからデータを削除してます！
6行目で色をグレイに戻してます！
ビルドして実際に操作してみてください！
データが削除されたかどうかは右上の参照ボタンで確認できます！
だいぶ形になってきましたね！！
そろそろデザイン考えても良さそうですね！
その前にちょっとコードが長くなってるので少しまとめてみようと思います！
最後まで読んでくれた人ありがとうございます！
コメントくれると嬉しいです！お願いします〜！
import UIKit
import AudioToolbox
import RealmSwift
class MainViewController: UIViewController {
//スクロールビュー
let scrollView = UIScrollView()
//ボタンを表示用のビュー
let inView: UIView = UIView()
//スタックビュー縦用
var stackV: UIStackView = UIStackView()
//ボタンの配列
var buttonArray: [UIButton] = []
//スタックビュー横を格納する為の配列
var stkArray: [UIStackView] = []
//貯金額合計
var totalSavings = 0
//貯金開始？日目
var whatDay = 0
// DB参照ボタン
var referenceBtn: UIBarButtonItem!
//DBリセットボタン
var resetBtn: UIBarButtonItem!
//オレンジ色のビュー
let topView: UIView = UIView()
//白色のビュー
let topViewInner: UIView = UIView()
//合計日数のラベル
let dayLabel: UILabel = UILabel()
//貯金額のラベル
let moneyLabel: UILabel = UILabel()
override func viewDidLoad() {
super.viewDidLoad()
//ビューの生成
viewCreate()
//ラベルの生成
labelCreate()
//ボタンの生成
btnCreate()
//スタックビューの生成
stackViewCreate()
//ナビゲーションコントローラーまわり
//タイトル
self.title = "365貯金"
//背景色
self.navigationController?.navigationBar.barTintColor = UIColor.orange
//セーフエリアとの境目の線を消す
self.navigationController?.navigationBar.shadowImage = UIImage()
//上部が黒くなるのを回避
view.backgroundColor = UIColor.systemBackground
//Realmテスト用ボタン右
referenceBtn = UIBarButtonItem(title: "参照", style: .done, target: self, action: #selector(self.referenceBtnTapped))
self.navigationItem.rightBarButtonItem = referenceBtn
//Realmテスト用ボタン左
resetBtn = UIBarButtonItem(title: "リセット", style: .done, target: self, action: #selector(self.resetBtnTapped))
self.navigationItem.leftBarButtonItem = resetBtn
//realmの呼び出し
let realm = try! Realm()
//保存されたデータが定数Btn365に入る
let Btn365 = realm.objects(Btn365.self)
//定数Btn365をfor文で回し、ボタンの色を変更しつつ、貯金額を足しつつ、日数も足してる。
for i in 0..<Btn365.count {
//ボタンの色を変更
buttonArray[Btn365[i].tagNum - 1].backgroundColor = UIColor.blue
//貯金額を足してる
totalSavings += Btn365[i].tagNum
//日数はアクティブなボタンの数と同じ
whatDay += 1
}
//貯金額ラベルを更新
moneyLabel.text = "合計貯金額\(totalSavings)円"
//合計日数ラベルを更新
dayLabel.text = "\(whatDay)日目"
}
//DB参照
@objc func referenceBtnTapped() {
let realm = try! Realm()
let Btn365 = realm.objects(Btn365.self)
print(Btn365)
}
//DBリセット
@objc func resetBtnTapped() {
let realm = try! Realm()
try! realm.write {
realm.deleteAll()
}
}
//ビュー生成
func viewCreate() {
//オレンジ色のビューの表示
view.addSubview(topView)
//白色のビューの表示
topView.addSubview(topViewInner)
//スクロールビューの表示
view.addSubview(scrollView)
//ボタン表示用ビューの表示
scrollView.addSubview(inView)
//スクロールビューの設定
//AutosizingをAutoLayoutに変換しないようにしている（おまじない）
scrollView.translatesAutoresizingMaskIntoConstraints = false
//スクロールビューの上側の位置を設定
scrollView.topAnchor.constraint(equalTo: topView.bottomAnchor, constant: 20.0).isActive = true
//スクロールビューの下側の位置を設定
scrollView.bottomAnchor.constraint(equalTo: self.view.safeAreaLayoutGuide.bottomAnchor, constant: -20.0).isActive = true
//Y軸
scrollView.centerXAnchor.constraint(equalTo: self.view.safeAreaLayoutGuide.centerXAnchor).isActive = true
//横幅
scrollView.widthAnchor.constraint(equalTo: self.view.safeAreaLayoutGuide.widthAnchor, multiplier: 0.9).isActive = true
//ボタン表示用ビューの設定
//AutosizingをAutoLayoutに変換しないようにしている（おまじない）
inView.translatesAutoresizingMaskIntoConstraints = false
//横幅
inView.widthAnchor.constraint(equalTo: scrollView.widthAnchor, multiplier: 1.0).isActive = true
//この4つの制約をつけて初めてスクロールするっぽい
inView.leftAnchor.constraint(equalTo: scrollView.leftAnchor, constant: 0).isActive = true
inView.rightAnchor.constraint(equalTo: scrollView.rightAnchor, constant: 0.0).isActive = true
inView.topAnchor.constraint(equalTo: scrollView.topAnchor, constant: 0.0).isActive = true
inView.bottomAnchor.constraint(equalTo: scrollView.bottomAnchor, constant: 0.0).isActive = true
//オレンジのビューのレイアウト
//AutosizingをAutoLayoutに変換しないようにしている（おまじない）
topView.translatesAutoresizingMaskIntoConstraints = false
//X軸
topView.centerXAnchor.constraint(equalTo: self.view.safeAreaLayoutGuide.centerXAnchor).isActive = true
//Y軸
topView.topAnchor.constraint(equalTo: self.view.safeAreaLayoutGuide.topAnchor).isActive = true
//横幅
topView.widthAnchor.constraint(equalTo: self.view.safeAreaLayoutGuide.widthAnchor, multiplier: 1).isActive = true
//縦幅
topView.heightAnchor.constraint(equalTo: self.view.safeAreaLayoutGuide.heightAnchor, multiplier: 0.125).isActive = true
//背景色
topView.backgroundColor = UIColor.orange
//白色のビューのレイアウト
//（おまじない）
topViewInner.translatesAutoresizingMaskIntoConstraints = false
//X軸
topViewInner.centerXAnchor.constraint(equalTo: topView.centerXAnchor).isActive = true
//Y軸
topViewInner.centerYAnchor.constraint(equalTo: topView.centerYAnchor).isActive = true
//横幅
topViewInner.widthAnchor.constraint(equalTo: topView.widthAnchor, multiplier: 0.9).isActive = true
//縦幅
topViewInner.heightAnchor.constraint(equalTo: topView.heightAnchor, multiplier: 0.75).isActive = true
//背景色
topViewInner.backgroundColor = UIColor.white
}
//ラベル生成
func labelCreate() {
//合計日数のラベルを表示
topViewInner.addSubview(dayLabel)
//貯金額のラベルを表示
topViewInner.addSubview(moneyLabel)
//合計日数のラベルのレイアウト
//（おまじない）
dayLabel.translatesAutoresizingMaskIntoConstraints = false
//X軸
dayLabel.leftAnchor.constraint(equalTo: topViewInner.leftAnchor, constant: 20.0).isActive = true
//Y軸
dayLabel.centerYAnchor.constraint(equalTo: topViewInner.centerYAnchor).isActive = true
//ラベルのテキスト
dayLabel.text = "\(whatDay)日目"
//貯金額のラベルのレイアウト
//（おまじない）
moneyLabel.translatesAutoresizingMaskIntoConstraints = false
//X軸
moneyLabel.rightAnchor.constraint(equalTo: topViewInner.rightAnchor, constant: -20.0).isActive = true
//Y軸
moneyLabel.centerYAnchor.constraint(equalTo: topViewInner.centerYAnchor).isActive = true
//ラベルのテキスト
moneyLabel.text = "合計貯金額 \(totalSavings)円"
}
//スタックビュー生成
func stackViewCreate() {
//スタックビュー縦の設定
//スタックビューの方向を縦に
stackV.axis = .vertical
//中のオブジェクトをどこに揃えて配置するか
stackV.alignment = .fill
//どう配置するか
stackV.distribution = .fill
//オブジェクト同士のスペース
stackV.spacing = 4
//おまじない
stackV.translatesAutoresizingMaskIntoConstraints = false
//stackVの背景色
stackV.backgroundColor = UIColor.white
//stackVを表示
inView.addSubview(stackV)
//X軸
stackV.centerXAnchor.constraint(equalTo: inView.centerXAnchor).isActive = true
//トップ位置
stackV.topAnchor.constraint(equalTo: stackV.topAnchor, constant: 0.0).isActive = true
//横幅
stackV.widthAnchor.constraint(equalTo: inView.widthAnchor, multiplier: 1.0).isActive = true
//縦幅
stackV.heightAnchor.constraint(equalTo: inView.heightAnchor, multiplier: 1.0).isActive = true
//スタックビュー横を自動生成
for i in 0 ..< 73 {
//StackHの生成
let stackH:UIStackView = UIStackView()
//スタックビューの方向を横に
stackH.axis = .horizontal
//オブジェクト同士のスペース
stackH.spacing = 4
//中のオブジェクトをどこに揃えて配置するか
stackH.alignment = .fill
//どう配置するか
stackH.distribution = .fillEqually
//スタックビュー配列に追加
stkArray.append(stackH)
//stackVの中にstackHを格納
stackV.addArrangedSubview(stkArray[i])
}
//ボタンの配置
//for文のカウンター変数
var count = 0
//for文で365個のボタンをどのstackHに入れるか決めている
for i in 1 ..< 366 {
//カウントの数に応じてどのstackHに入るか決定する。
stkArray[count].addArrangedSubview(buttonArray[i - 1] as UIView)
//ボタンは5列なので5の倍数でcountを一つ増やす。
if i % 5 == 0 {
count += 1
}
}
}
//ボタン生成
func btnCreate() {
//ボタンの生成と設定
//ボタンにtagを付ける為の変数
var tagNumber = 1
//for文でボタンを生成
for _ in 0...364 {
//ボタン生成
let button: UIButton = UIButton(type: .custom)
//タイトルの色
button.setTitleColor(UIColor.black, for: UIControl.State())
//タイトルは数字なのでtagナンバーを指定
button.setTitle(String(tagNumber), for: UIControl.State())
//tag設定
button.tag = tagNumber
//背景色
button.backgroundColor = UIColor.lightGray
//ボーダーの横幅
button.layer.borderWidth = 3
//ボターの色
button.layer.borderColor = UIColor.black.cgColor
//AutosizingをAutoLayoutに変換しないようにしている（おまじない）
button.translatesAutoresizingMaskIntoConstraints = false
//ボタンの横幅が可変なのでボタンの高さは横幅と同じ長さを指定する事で正方形にしてる。
button.heightAnchor.constraint(equalTo: button.widthAnchor, multiplier: 1.0).isActive = true
//変数tagNumberに1追加
tagNumber += 1
//ボタン長押し
let longPressGesture = UILongPressGestureRecognizer(target: self, action: #selector(longPressed(_:))
)
//長押しを認識する時間の設定
longPressGesture.minimumPressDuration = 0.01
//ボタンに長押し機能を付ける
button.addGestureRecognizer(longPressGesture)
//ボタンの配列に追加
buttonArray.append(button)
}
}
// MARK: - ここからアニメーション関係
//タイマー初期化
var timer: Timer!
//2秒長押ししたかどうか判定する変数
var longTapOK = false
//ボタンのタグを関数の外に出す為の変数
var btnTag = 0
//長押し機能
@objc func longPressed(_ sender: UILongPressGestureRecognizer) {
if sender.state == .began {
print("ボタン押した")
btnTag = sender.view!.tag
UIView.animate(withDuration: 2) {
self.buttonArray[sender.view!.tag - 1].backgroundColor = UIColor.blue
}
startTimer()
} else if sender.state == .ended {
print("ボタン離した")
if longTapOK == false {
//realmの呼び出し
let realm = try! Realm()
//if文で条件分岐
if realm.objects(Btn365.self).filter("tagNum == \(sender.view!.tag)").first != nil {
print("アラートを出す")
//アラートのタイトルやメッセージの設定
let alertController = DOAlertController(title: "解除しますか？", message: "", preferredStyle: .alert)
//キャンセルアクションの設定
let cancelAction = DOAlertAction(title: "Cancel", style: .cancel, handler: nil)
//OKアクションの設定
let okAction = DOAlertAction(title: "OK", style: .default) { action in
print("OKボタンが押された")
Btn365.delete(tag: sender.view!.tag)
self.buttonArray[sender.view!.tag - 1].backgroundColor = UIColor.lightGray
}
//キャンセルとOKのアクションを追加
alertController.addAction(cancelAction)
alertController.addAction(okAction)
//アラートを表示
present(alertController, animated: true, completion: nil)
} else {
//色をグレイに戻す
UIView.animate(withDuration: 0.1) {
self.buttonArray[sender.view!.tag - 1].backgroundColor = UIColor.lightGray
}
}
//タイマーストップ
timer.invalidate()
} else {
print("ロングタップ成功")
longTapOK = false
}
}
}
//タイマーの設定
func startTimer() {
timer = Timer.scheduledTimer(
timeInterval: 2, //タイマーの間隔を設定
target: self,
selector: #selector(self.timerCounter), //メソッドの設定
userInfo: nil,
repeats: false) //リピートするかどうか
}
//タイマーで実行される処理
@objc func timerCounter() {
//ロングタップ成功
longTapOK = true
//ぽよよんアニメーションの実行
animateView(topViewInner)
//バイブさせる
AudioServicesPlaySystemSound(1102)
//ラベルの更新
updateLabel()
//RealmDBへ登録
let a = Btn365.create()
a.tagNum = btnTag
a.save()
}
//ラベルの値を更新する（長押し認識してから2秒後に実行される）
func updateLabel() {
//貯金額を更新
totalSavings += btnTag
//合計日数を更新
whatDay += 1
//貯金額ラベルを更新
moneyLabel.text = "合計貯金額\(totalSavings)円"
//合計日数ラベルを更新
dayLabel.text = "\(whatDay)日目"
}
//ぽよよんアニメーション
func animateView(_ viewToAnimate:UIView) {
UIView.animate(withDuration: 0.2, delay: 0, options: .curveEaseIn, animations: {
viewToAnimate.transform = CGAffineTransform(scaleX: 1.08, y: 1.08)
}) { (_) in
UIView.animate(withDuration: 0.4, delay: 0, usingSpringWithDamping: 0.3, initialSpringVelocity: 10, options: .curveEaseOut, animations: {
viewToAnimate.transform = .identity
}, completion: nil)
}
}
}import Foundation
import RealmSwift
class Btn365: Object {
//おまじない
static let realm = try! Realm()
//必要なデータの変数を作る。
@objc dynamic var tagNum: Int = 0
//データの登録
static func create() -> Btn365 {
let addDate = Btn365()
return addDate
}
//データの保存
func save() {
try! Btn365.realm.write {
Btn365.realm.add(self)
}
}
//データの消去
static func delete(tag: Int) {
if let del = Btn365.realm.objects(Btn365.self).filter("tagNum == \(tag)").first {
try! Btn365.realm.write {
Btn365.realm.delete(del)
}
}
}
}これがアラート部分のコードです！
新しいswiftファイルを作って下記をコピペするだけで使えるようになります！
import Foundation
import UIKit
let DOAlertActionEnabledDidChangeNotification = "DOAlertActionEnabledDidChangeNotification"
public enum DOAlertActionStyle : Int {
case `default`
case cancel
case destructive
}
public enum DOAlertControllerStyle : Int {
case actionSheet
case alert
}
// MARK: DOAlertAction Class
open class DOAlertAction : NSObject, NSCopying {
open var title: String
open var style: DOAlertActionStyle
var handler: ((DOAlertAction?) -> Void)!
open var enabled: Bool {
didSet {
if (oldValue != enabled) {
NotificationCenter.default.post(name: Notification.Name(rawValue: DOAlertActionEnabledDidChangeNotification), object: nil)
}
}
}
required public init(title: String, style: DOAlertActionStyle, handler: ((DOAlertAction?) -> Void)!) {
self.title = title
self.style = style
self.handler = handler
self.enabled = true
}
open func copy(with zone: NSZone?) -> Any {
let copy = type(of: self).init(title: title, style: style, handler: handler)
copy.enabled = self.enabled
return copy
}
}
// MARK: DOAlertAnimation Class
open class DOAlertAnimation : NSObject, UIViewControllerAnimatedTransitioning {
let isPresenting: Bool
init(isPresenting: Bool) {
self.isPresenting = isPresenting
}
open func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
if (isPresenting) {
return 0.45
} else {
return 0.25
}
}
open func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
if (isPresenting) {
self.presentAnimateTransition(transitionContext)
} else {
self.dismissAnimateTransition(transitionContext)
}
}
func presentAnimateTransition(_ transitionContext: UIViewControllerContextTransitioning) {
let alertController = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.to) as! DOAlertController
let containerView = transitionContext.containerView
alertController.overlayView.alpha = 0.0
if (alertController.isAlert()) {
alertController.alertView.alpha = 0.0
alertController.alertView.center = alertController.view.center
alertController.alertView.transform = CGAffineTransform(scaleX: 0.5, y: 0.5)
} else {
alertController.alertView.transform = CGAffineTransform(translationX: 0, y: alertController.alertView.frame.height)
}
containerView.addSubview(alertController.view)
UIView.animate(withDuration: 0.25,
animations: {
alertController.overlayView.alpha = 1.0
if (alertController.isAlert()) {
alertController.alertView.alpha = 1.0
alertController.alertView.transform = CGAffineTransform(scaleX: 1.05, y: 1.05)
} else {
let bounce = alertController.alertView.frame.height / 480 * 10.0 + 10.0
alertController.alertView.transform = CGAffineTransform(translationX: 0, y: -bounce)
}
},
completion: { finished in
UIView.animate(withDuration: 0.2,
animations: {
alertController.alertView.transform = CGAffineTransform.identity
},
completion: { finished in
if (finished) {
transitionContext.completeTransition(true)
}
})
})
}
func dismissAnimateTransition(_ transitionContext: UIViewControllerContextTransitioning) {
let alertController = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.from) as! DOAlertController
UIView.animate(withDuration: self.transitionDuration(using: transitionContext),
animations: {
alertController.overlayView.alpha = 0.0
if (alertController.isAlert()) {
alertController.alertView.alpha = 0.0
alertController.alertView.transform = CGAffineTransform(scaleX: 0.9, y: 0.9)
} else {
alertController.containerView.transform = CGAffineTransform(translationX: 0, y: alertController.alertView.frame.height)
}
},
completion: { finished in
transitionContext.completeTransition(true)
})
}
}
// MARK: DOAlertController Class
@objc(DOAlertController)
open class DOAlertController : UIViewController, UITextFieldDelegate, UIViewControllerTransitioningDelegate {
// Message
open var message: String?
// AlertController Style
fileprivate(set) var preferredStyle: DOAlertControllerStyle?
// OverlayView
fileprivate var overlayView = UIView()
open var overlayColor = UIColor(red:0, green:0, blue:0, alpha:0.5)
// ContainerView
fileprivate var containerView = UIView()
fileprivate var containerViewBottomSpaceConstraint: NSLayoutConstraint?
// AlertView
open var alertView = UIView()
open var alertViewBgColor = UIColor(red:239/255, green:240/255, blue:242/255, alpha:1.0)
fileprivate var alertViewWidth: CGFloat = 270.0
fileprivate var alertViewHeightConstraint: NSLayoutConstraint?
fileprivate var alertViewPadding: CGFloat = 15.0
fileprivate var innerContentWidth: CGFloat = 240.0
fileprivate let actionSheetBounceHeight: CGFloat = 20.0
// TextAreaScrollView
fileprivate var textAreaScrollView = UIScrollView()
fileprivate var textAreaHeight: CGFloat = 0.0
// TextAreaView
fileprivate var textAreaView = UIView()
// TextContainer
fileprivate var textContainer = UIView()
fileprivate var textContainerHeightConstraint: NSLayoutConstraint?
// TitleLabel
open var titleLabel = UILabel()
open var titleFont = UIFont(name: "HelveticaNeue-Bold", size: 18)
open var titleTextColor = UIColor(red:77/255, green:77/255, blue:77/255, alpha:1.0)
// MessageView
open var messageView = UILabel()
open var messageFont = UIFont(name: "HelveticaNeue", size: 15)
open var messageTextColor = UIColor(red:77/255, green:77/255, blue:77/255, alpha:1.0)
// TextFieldContainerView
open var textFieldContainerView = UIView()
open var textFieldBorderColor = UIColor(red: 203.0/255, green: 203.0/255, blue: 203.0/255, alpha: 1.0)
// TextFields
fileprivate(set) var textFields: [AnyObject]?
fileprivate let textFieldHeight: CGFloat = 30.0
open var textFieldBgColor = UIColor.white
fileprivate let textFieldCornerRadius: CGFloat = 4.0
// ButtonAreaScrollView
fileprivate var buttonAreaScrollView = UIScrollView()
fileprivate var buttonAreaScrollViewHeightConstraint: NSLayoutConstraint?
fileprivate var buttonAreaHeight: CGFloat = 0.0
// ButtonAreaView
fileprivate var buttonAreaView = UIView()
// ButtonContainer
fileprivate var buttonContainer = UIView()
fileprivate var buttonContainerHeightConstraint: NSLayoutConstraint?
fileprivate let buttonHeight: CGFloat = 44.0
fileprivate var buttonMargin: CGFloat = 10.0
// Actions
open fileprivate(set) var actions: [AnyObject] = []
// Buttons
open var buttons = [UIButton]()
open var buttonFont: [DOAlertActionStyle : UIFont] = [
.default : UIFont(name: "HelveticaNeue-Bold", size: 16) ?? UIFont.systemFont(ofSize: 16),
.cancel : UIFont(name: "HelveticaNeue-Bold", size: 16) ?? UIFont.systemFont(ofSize: 16),
.destructive : UIFont(name: "HelveticaNeue-Bold", size: 16) ?? UIFont.systemFont(ofSize: 16)
]
open var buttonTextColor: [DOAlertActionStyle : UIColor] = [
.default : UIColor.white,
.cancel : UIColor.white,
.destructive : UIColor.white
]
open var buttonBgColor: [DOAlertActionStyle : UIColor] = [
.default : UIColor(red:52/255, green:152/255, blue:219/255, alpha:1),
.cancel : UIColor(red:127/255, green:140/255, blue:141/255, alpha:1),
.destructive : UIColor(red:231/255, green:76/255, blue:60/255, alpha:1)
]
open var buttonBgColorHighlighted: [DOAlertActionStyle : UIColor] = [
.default : UIColor(red:74/255, green:163/255, blue:223/255, alpha:1),
.cancel : UIColor(red:140/255, green:152/255, blue:153/255, alpha:1),
.destructive : UIColor(red:234/255, green:97/255, blue:83/255, alpha:1)
]
fileprivate var buttonCornerRadius: CGFloat = 4.0
fileprivate var layoutFlg = false
fileprivate var keyboardHeight: CGFloat = 0.0
fileprivate var cancelButtonTag = 0
// Initializer
public convenience init(title: String?, message: String?, preferredStyle: DOAlertControllerStyle) {
self.init(nibName: nil, bundle: nil)
self.title = title
self.message = message
self.preferredStyle = preferredStyle
self.providesPresentationContextTransitionStyle = true
self.definesPresentationContext = true
self.modalPresentationStyle = UIModalPresentationStyle.custom
// NotificationCenter
NotificationCenter.default.addObserver(self, selector: #selector(DOAlertController.handleAlertActionEnabledDidChangeNotification(_:)), name: NSNotification.Name(rawValue: DOAlertActionEnabledDidChangeNotification), object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(DOAlertController.handleKeyboardWillShowNotification(_:)), name: UIResponder.keyboardWillShowNotification, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(DOAlertController.handleKeyboardWillHideNotification(_:)), name: UIResponder.keyboardWillHideNotification, object: nil)
// Delegate
self.transitioningDelegate = self
}
deinit {
NotificationCenter.default.removeObserver(self)
}
override public init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?) {
super.init(nibName:nibNameOrNil, bundle:nibBundleOrNil)
}
required public init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func currentOrientation() -> UIInterfaceOrientation {
return UIScreen.main.bounds.size.width < UIScreen.main.bounds.size.height ? .portrait : .landscapeLeft
}
override open func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
}
override open func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
if (!isAlert() && cancelButtonTag != 0) {
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(DOAlertController.handleContainerViewTapGesture(_:)))
containerView.addGestureRecognizer(tapGesture)
}
}
open override func viewWillLayoutSubviews() {
super.viewWillLayoutSubviews()
layoutView(self.presentingViewController)
}
open func layoutView(_ presenting: UIViewController?) {
if (layoutFlg) { return }
layoutFlg = true
// Screen Size
var screenSize = presenting != nil ? presenting!.view.bounds.size : UIScreen.main.bounds.size
if ((UIDevice.current.systemVersion as NSString).floatValue < 8.0) {
if (currentOrientation().isLandscape) {
screenSize = CGSize(width: screenSize.height, height: screenSize.width)
}
}
// variable for ActionSheet
if (!isAlert()) {
alertViewWidth = screenSize.width
alertViewPadding = 8.0
innerContentWidth = (screenSize.height > screenSize.width) ? screenSize.width - alertViewPadding * 2 : screenSize.height - alertViewPadding * 2
buttonMargin = 8.0
buttonCornerRadius = 6.0
}
// self.view
self.view.frame.size = screenSize
// OverlayView
self.view.addSubview(overlayView)
// ContainerView
self.view.addSubview(containerView)
// AlertView
containerView.addSubview(alertView)
// TextAreaScrollView
alertView.addSubview(textAreaScrollView)
// TextAreaView
textAreaScrollView.addSubview(textAreaView)
// TextContainer
textAreaView.addSubview(textContainer)
// ButtonAreaScrollView
alertView.addSubview(buttonAreaScrollView)
// ButtonAreaView
buttonAreaScrollView.addSubview(buttonAreaView)
// ButtonContainer
buttonAreaView.addSubview(buttonContainer)
//------------------------------
// Layout Constraint
//------------------------------
overlayView.translatesAutoresizingMaskIntoConstraints = false
containerView.translatesAutoresizingMaskIntoConstraints = false
alertView.translatesAutoresizingMaskIntoConstraints = false
textAreaScrollView.translatesAutoresizingMaskIntoConstraints = false
textAreaView.translatesAutoresizingMaskIntoConstraints = false
textContainer.translatesAutoresizingMaskIntoConstraints = false
buttonAreaScrollView.translatesAutoresizingMaskIntoConstraints = false
buttonAreaView.translatesAutoresizingMaskIntoConstraints = false
buttonContainer.translatesAutoresizingMaskIntoConstraints = false
// self.view
let overlayViewTopSpaceConstraint = NSLayoutConstraint(item: overlayView, attribute: .top, relatedBy: .equal, toItem: self.view, attribute: .top, multiplier: 1.0, constant: 0.0)
let overlayViewRightSpaceConstraint = NSLayoutConstraint(item: overlayView, attribute: .right, relatedBy: .equal, toItem: self.view, attribute: .right, multiplier: 1.0, constant: 0.0)
let overlayViewLeftSpaceConstraint = NSLayoutConstraint(item: overlayView, attribute: .left, relatedBy: .equal, toItem: self.view, attribute: .left, multiplier: 1.0, constant: 0.0)
let overlayViewBottomSpaceConstraint = NSLayoutConstraint(item: overlayView, attribute: .bottom, relatedBy: .equal, toItem: self.view, attribute: .bottom, multiplier: 1.0, constant: 0.0)
let containerViewTopSpaceConstraint = NSLayoutConstraint(item: containerView, attribute: .top, relatedBy: .equal, toItem: self.view, attribute: .top, multiplier: 1.0, constant: 0.0)
let containerViewRightSpaceConstraint = NSLayoutConstraint(item: containerView, attribute: .right, relatedBy: .equal, toItem: self.view, attribute: .right, multiplier: 1.0, constant: 0.0)
let containerViewLeftSpaceConstraint = NSLayoutConstraint(item: containerView, attribute: .left, relatedBy: .equal, toItem: self.view, attribute: .left, multiplier: 1.0, constant: 0.0)
containerViewBottomSpaceConstraint = NSLayoutConstraint(item: containerView, attribute: .bottom, relatedBy: .equal, toItem: self.view, attribute: .bottom, multiplier: 1.0, constant: 0.0)
self.view.addConstraints([overlayViewTopSpaceConstraint, overlayViewRightSpaceConstraint, overlayViewLeftSpaceConstraint, overlayViewBottomSpaceConstraint, containerViewTopSpaceConstraint, containerViewRightSpaceConstraint, containerViewLeftSpaceConstraint, containerViewBottomSpaceConstraint!])
if (isAlert()) {
// ContainerView
let alertViewCenterXConstraint = NSLayoutConstraint(item: alertView, attribute: .centerX, relatedBy: .equal, toItem: containerView, attribute: .centerX, multiplier: 1.0, constant: 0.0)
let alertViewCenterYConstraint = NSLayoutConstraint(item: alertView, attribute: .centerY, relatedBy: .equal, toItem: containerView, attribute: .centerY, multiplier: 1.0, constant: 0.0)
containerView.addConstraints([alertViewCenterXConstraint, alertViewCenterYConstraint])
// AlertView
let alertViewWidthConstraint = NSLayoutConstraint(item: alertView, attribute: .width, relatedBy: .equal, toItem: nil, attribute: .width, multiplier: 1.0, constant: alertViewWidth)
alertViewHeightConstraint = NSLayoutConstraint(item: alertView, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .height, multiplier: 1.0, constant: 1000.0)
alertView.addConstraints([alertViewWidthConstraint, alertViewHeightConstraint!])
} else {
// ContainerView
let alertViewCenterXConstraint = NSLayoutConstraint(item: alertView, attribute: .centerX, relatedBy: .equal, toItem: containerView, attribute: .centerX, multiplier: 1.0, constant: 0.0)
let alertViewBottomSpaceConstraint = NSLayoutConstraint(item: alertView, attribute: .bottom, relatedBy: .equal, toItem: containerView, attribute: .bottom, multiplier: 1.0, constant: actionSheetBounceHeight)
let alertViewWidthConstraint = NSLayoutConstraint(item: alertView, attribute: .width, relatedBy: .equal, toItem: containerView, attribute: .width, multiplier: 1.0, constant: 0.0)
containerView.addConstraints([alertViewCenterXConstraint, alertViewBottomSpaceConstraint, alertViewWidthConstraint])
// AlertView
alertViewHeightConstraint = NSLayoutConstraint(item: alertView, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .height, multiplier: 1.0, constant: 1000.0)
alertView.addConstraint(alertViewHeightConstraint!)
}
// AlertView
let textAreaScrollViewTopSpaceConstraint = NSLayoutConstraint(item: textAreaScrollView, attribute: .top, relatedBy: .equal, toItem: alertView, attribute: .top, multiplier: 1.0, constant: 0.0)
let textAreaScrollViewRightSpaceConstraint = NSLayoutConstraint(item: textAreaScrollView, attribute: .right, relatedBy: .equal, toItem: alertView, attribute: .right, multiplier: 1.0, constant: 0.0)
let textAreaScrollViewLeftSpaceConstraint = NSLayoutConstraint(item: textAreaScrollView, attribute: .left, relatedBy: .equal, toItem: alertView, attribute: .left, multiplier: 1.0, constant: 0.0)
let textAreaScrollViewBottomSpaceConstraint = NSLayoutConstraint(item: textAreaScrollView, attribute: .bottom, relatedBy: .equal, toItem: buttonAreaScrollView, attribute: .top, multiplier: 1.0, constant: 0.0)
let buttonAreaScrollViewRightSpaceConstraint = NSLayoutConstraint(item: buttonAreaScrollView, attribute: .right, relatedBy: .equal, toItem: alertView, attribute: .right, multiplier: 1.0, constant: 0.0)
let buttonAreaScrollViewLeftSpaceConstraint = NSLayoutConstraint(item: buttonAreaScrollView, attribute: .left, relatedBy: .equal, toItem: alertView, attribute: .left, multiplier: 1.0, constant: 0.0)
let buttonAreaScrollViewBottomSpaceConstraint = NSLayoutConstraint(item: buttonAreaScrollView, attribute: .bottom, relatedBy: .equal, toItem: alertView, attribute: .bottom, multiplier: 1.0, constant: isAlert() ? 0.0 : -actionSheetBounceHeight)
alertView.addConstraints([textAreaScrollViewTopSpaceConstraint, textAreaScrollViewRightSpaceConstraint, textAreaScrollViewLeftSpaceConstraint, textAreaScrollViewBottomSpaceConstraint, buttonAreaScrollViewRightSpaceConstraint, buttonAreaScrollViewLeftSpaceConstraint, buttonAreaScrollViewBottomSpaceConstraint])
// TextAreaScrollView
let textAreaViewTopSpaceConstraint = NSLayoutConstraint(item: textAreaView, attribute: .top, relatedBy: .equal, toItem: textAreaScrollView, attribute: .top, multiplier: 1.0, constant: 0.0)
let textAreaViewRightSpaceConstraint = NSLayoutConstraint(item: textAreaView, attribute: .right, relatedBy: .equal, toItem: textAreaScrollView, attribute: .right, multiplier: 1.0, constant: 0.0)
let textAreaViewLeftSpaceConstraint = NSLayoutConstraint(item: textAreaView, attribute: .left, relatedBy: .equal, toItem: textAreaScrollView, attribute: .left, multiplier: 1.0, constant: 0.0)
let textAreaViewBottomSpaceConstraint = NSLayoutConstraint(item: textAreaView, attribute: .bottom, relatedBy: .equal, toItem: textAreaScrollView, attribute: .bottom, multiplier: 1.0, constant: 0.0)
let textAreaViewWidthConstraint = NSLayoutConstraint(item: textAreaView, attribute: .width, relatedBy: .equal, toItem: textAreaScrollView, attribute: .width, multiplier: 1.0, constant: 0.0)
textAreaScrollView.addConstraints([textAreaViewTopSpaceConstraint, textAreaViewRightSpaceConstraint, textAreaViewLeftSpaceConstraint, textAreaViewBottomSpaceConstraint, textAreaViewWidthConstraint])
// TextArea
let textAreaViewHeightConstraint = NSLayoutConstraint(item: textAreaView, attribute: .height, relatedBy: .equal, toItem: textContainer, attribute: .height, multiplier: 1.0, constant: 0.0)
let textContainerTopSpaceConstraint = NSLayoutConstraint(item: textContainer, attribute: .top, relatedBy: .equal, toItem: textAreaView, attribute: .top, multiplier: 1.0, constant: 0.0)
let textContainerCenterXConstraint = NSLayoutConstraint(item: textContainer, attribute: .centerX, relatedBy: .equal, toItem: textAreaView, attribute: .centerX, multiplier: 1.0, constant: 0.0)
textAreaView.addConstraints([textAreaViewHeightConstraint, textContainerTopSpaceConstraint, textContainerCenterXConstraint])
// TextContainer
let textContainerWidthConstraint = NSLayoutConstraint(item: textContainer, attribute: .width, relatedBy: .equal, toItem: nil, attribute: .width, multiplier: 1.0, constant: innerContentWidth)
textContainerHeightConstraint = NSLayoutConstraint(item: textContainer, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .height, multiplier: 1.0, constant: 0.0)
textContainer.addConstraints([textContainerWidthConstraint, textContainerHeightConstraint!])
// ButtonAreaScrollView
buttonAreaScrollViewHeightConstraint = NSLayoutConstraint(item: buttonAreaScrollView, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .height, multiplier: 1.0, constant: 0.0)
let buttonAreaViewTopSpaceConstraint = NSLayoutConstraint(item: buttonAreaView, attribute: .top, relatedBy: .equal, toItem: buttonAreaScrollView, attribute: .top, multiplier: 1.0, constant: 0.0)
let buttonAreaViewRightSpaceConstraint = NSLayoutConstraint(item: buttonAreaView, attribute: .right, relatedBy: .equal, toItem: buttonAreaScrollView, attribute: .right, multiplier: 1.0, constant: 0.0)
let buttonAreaViewLeftSpaceConstraint = NSLayoutConstraint(item: buttonAreaView, attribute: .left, relatedBy: .equal, toItem: buttonAreaScrollView, attribute: .left, multiplier: 1.0, constant: 0.0)
let buttonAreaViewBottomSpaceConstraint = NSLayoutConstraint(item: buttonAreaView, attribute: .bottom, relatedBy: .equal, toItem: buttonAreaScrollView, attribute: .bottom, multiplier: 1.0, constant: 0.0)
let buttonAreaViewWidthConstraint = NSLayoutConstraint(item: buttonAreaView, attribute: .width, relatedBy: .equal, toItem: buttonAreaScrollView, attribute: .width, multiplier: 1.0, constant: 0.0)
buttonAreaScrollView.addConstraints([buttonAreaScrollViewHeightConstraint!, buttonAreaViewTopSpaceConstraint, buttonAreaViewRightSpaceConstraint, buttonAreaViewLeftSpaceConstraint, buttonAreaViewBottomSpaceConstraint, buttonAreaViewWidthConstraint])
// ButtonArea
let buttonAreaViewHeightConstraint = NSLayoutConstraint(item: buttonAreaView, attribute: .height, relatedBy: .equal, toItem: buttonContainer, attribute: .height, multiplier: 1.0, constant: 0.0)
let buttonContainerTopSpaceConstraint = NSLayoutConstraint(item: buttonContainer, attribute: .top, relatedBy: .equal, toItem: buttonAreaView, attribute: .top, multiplier: 1.0, constant: 0.0)
let buttonContainerCenterXConstraint = NSLayoutConstraint(item: buttonContainer, attribute: .centerX, relatedBy: .equal, toItem: buttonAreaView, attribute: .centerX, multiplier: 1.0, constant: 0.0)
buttonAreaView.addConstraints([buttonAreaViewHeightConstraint, buttonContainerTopSpaceConstraint, buttonContainerCenterXConstraint])
// ButtonContainer
let buttonContainerWidthConstraint = NSLayoutConstraint(item: buttonContainer, attribute: .width, relatedBy: .equal, toItem: nil, attribute: .width, multiplier: 1.0, constant: innerContentWidth)
buttonContainerHeightConstraint = NSLayoutConstraint(item: buttonContainer, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .height, multiplier: 1.0, constant: 0.0)
buttonContainer.addConstraints([buttonContainerWidthConstraint, buttonContainerHeightConstraint!])
//------------------------------
// Layout & Color Settings
//------------------------------
overlayView.backgroundColor = overlayColor
alertView.backgroundColor = alertViewBgColor
//------------------------------
// TextArea Layout
//------------------------------
let hasTitle: Bool = title != nil && title != ""
let hasMessage: Bool = message != nil && message != ""
let hasTextField: Bool = textFields != nil && textFields!.count > 0
var textAreaPositionY: CGFloat = alertViewPadding
if (!isAlert()) {textAreaPositionY += alertViewPadding}
// TitleLabel
if (hasTitle) {
titleLabel.frame.size = CGSize(width: innerContentWidth, height: 0.0)
titleLabel.numberOfLines = 0
titleLabel.textAlignment = .center
titleLabel.font = titleFont
titleLabel.textColor = titleTextColor
titleLabel.text = title
titleLabel.sizeToFit()
titleLabel.frame = CGRect(x: 0, y: textAreaPositionY, width: innerContentWidth, height: titleLabel.frame.height)
textContainer.addSubview(titleLabel)
textAreaPositionY += titleLabel.frame.height + 5.0
}
// MessageView
if (hasMessage) {
messageView.frame.size = CGSize(width: innerContentWidth, height: 0.0)
messageView.numberOfLines = 0
messageView.textAlignment = .center
messageView.font = messageFont
messageView.textColor = messageTextColor
messageView.text = message
messageView.sizeToFit()
messageView.frame = CGRect(x: 0, y: textAreaPositionY, width: innerContentWidth, height: messageView.frame.height)
textContainer.addSubview(messageView)
textAreaPositionY += messageView.frame.height + 5.0
}
// TextFieldContainerView
if (hasTextField) {
if (hasTitle || hasMessage) { textAreaPositionY += 5.0 }
textFieldContainerView.backgroundColor = textFieldBorderColor
textFieldContainerView.layer.masksToBounds = true
textFieldContainerView.layer.cornerRadius = textFieldCornerRadius
textFieldContainerView.layer.borderWidth = 0.5
textFieldContainerView.layer.borderColor = textFieldBorderColor.cgColor
textContainer.addSubview(textFieldContainerView)
var textFieldContainerHeight: CGFloat = 0.0
// TextFields
for (_, obj) in (textFields!).enumerated() {
let textField = obj as! UITextField
textField.frame = CGRect(x: 0.0, y: textFieldContainerHeight, width: innerContentWidth, height: textField.frame.height)
textFieldContainerHeight += textField.frame.height + 0.5
}
textFieldContainerHeight -= 0.5
textFieldContainerView.frame = CGRect(x: 0.0, y: textAreaPositionY, width: innerContentWidth, height: textFieldContainerHeight)
textAreaPositionY += textFieldContainerHeight + 5.0
}
if (!hasTitle && !hasMessage && !hasTextField) {
textAreaPositionY = 0.0
}
// TextAreaScrollView
textAreaHeight = textAreaPositionY
textAreaScrollView.contentSize = CGSize(width: alertViewWidth, height: textAreaHeight)
textContainerHeightConstraint?.constant = textAreaHeight
//------------------------------
// ButtonArea Layout
//------------------------------
var buttonAreaPositionY: CGFloat = buttonMargin
// Buttons
if (isAlert() && buttons.count == 2) {
let buttonWidth = (innerContentWidth - buttonMargin) / 2
var buttonPositionX: CGFloat = 0.0
for button in buttons {
let action = actions[button.tag - 1] as! DOAlertAction
button.titleLabel?.font = buttonFont[action.style]
button.setTitleColor(buttonTextColor[action.style], for: UIControl.State())
button.setBackgroundImage(createImageFromUIColor(buttonBgColor[action.style]!), for: UIControl.State())
button.setBackgroundImage(createImageFromUIColor(buttonBgColorHighlighted[action.style]!), for: .highlighted)
button.setBackgroundImage(createImageFromUIColor(buttonBgColorHighlighted[action.style]!), for: .selected)
button.frame = CGRect(x: buttonPositionX, y: buttonAreaPositionY, width: buttonWidth, height: buttonHeight)
buttonPositionX += buttonMargin + buttonWidth
}
buttonAreaPositionY += buttonHeight
} else {
for button in buttons {
let action = actions[button.tag - 1] as! DOAlertAction
if (action.style != DOAlertActionStyle.cancel) {
button.titleLabel?.font = buttonFont[action.style]
button.setTitleColor(buttonTextColor[action.style], for: UIControl.State())
button.setBackgroundImage(createImageFromUIColor(buttonBgColor[action.style]!), for: UIControl.State())
button.setBackgroundImage(createImageFromUIColor(buttonBgColorHighlighted[action.style]!), for: .highlighted)
button.setBackgroundImage(createImageFromUIColor(buttonBgColorHighlighted[action.style]!), for: .selected)
button.frame = CGRect(x: 0, y: buttonAreaPositionY, width: innerContentWidth, height: buttonHeight)
buttonAreaPositionY += buttonHeight + buttonMargin
} else {
cancelButtonTag = button.tag
}
}
// Cancel Button
if (cancelButtonTag != 0) {
if (!isAlert() && buttons.count > 1) {
buttonAreaPositionY += buttonMargin
}
let button = buttonAreaScrollView.viewWithTag(cancelButtonTag) as! UIButton
let action = actions[cancelButtonTag - 1] as! DOAlertAction
button.titleLabel?.font = buttonFont[action.style]
button.setTitleColor(buttonTextColor[action.style], for: UIControl.State())
button.setBackgroundImage(createImageFromUIColor(buttonBgColor[action.style]!), for: UIControl.State())
button.setBackgroundImage(createImageFromUIColor(buttonBgColorHighlighted[action.style]!), for: .highlighted)
button.setBackgroundImage(createImageFromUIColor(buttonBgColorHighlighted[action.style]!), for: .selected)
button.frame = CGRect(x: 0, y: buttonAreaPositionY, width: innerContentWidth, height: buttonHeight)
buttonAreaPositionY += buttonHeight + buttonMargin
}
buttonAreaPositionY -= buttonMargin
}
buttonAreaPositionY += alertViewPadding
if (buttons.count == 0) {
buttonAreaPositionY = 0.0
}
// ButtonAreaScrollView Height
buttonAreaHeight = buttonAreaPositionY
buttonAreaScrollView.contentSize = CGSize(width: alertViewWidth, height: buttonAreaHeight)
buttonContainerHeightConstraint?.constant = buttonAreaHeight
//------------------------------
// AlertView Layout
//------------------------------
// AlertView Height
reloadAlertViewHeight()
alertView.frame.size = CGSize(width: alertViewWidth, height: alertViewHeightConstraint?.constant ?? 150)
}
// Reload AlertView Height
func reloadAlertViewHeight() {
var screenSize = self.presentingViewController != nil ? self.presentingViewController!.view.bounds.size : UIScreen.main.bounds.size
if ((UIDevice.current.systemVersion as NSString).floatValue < 8.0) {
if (currentOrientation().isLandscape) {
screenSize = CGSize(width: screenSize.height, height: screenSize.width)
}
}
let maxHeight = screenSize.height - keyboardHeight
// for avoiding constraint error
buttonAreaScrollViewHeightConstraint?.constant = 0.0
// AlertView Height Constraint
var alertViewHeight = textAreaHeight + buttonAreaHeight
if (alertViewHeight > maxHeight) {
alertViewHeight = maxHeight
}
if (!isAlert()) {
alertViewHeight += actionSheetBounceHeight
}
alertViewHeightConstraint?.constant = alertViewHeight
// ButtonAreaScrollView Height Constraint
var buttonAreaScrollViewHeight = buttonAreaHeight
if (buttonAreaScrollViewHeight > maxHeight) {
buttonAreaScrollViewHeight = maxHeight
}
buttonAreaScrollViewHeightConstraint?.constant = buttonAreaScrollViewHeight
}
// Button Tapped Action
@objc func buttonTapped(_ sender: UIButton) {
sender.isSelected = true
let action = actions[sender.tag - 1] as! DOAlertAction
if (action.handler != nil) {
action.handler(action)
}
self.dismiss(animated: true, completion: nil)
}
// Handle ContainerView tap gesture
@objc func handleContainerViewTapGesture(_ sender: AnyObject) {
// cancel action
let action = actions[cancelButtonTag - 1] as! DOAlertAction
if (action.handler != nil) {
action.handler(action)
}
self.dismiss(animated: true, completion: nil)
}
// UIColor -> UIImage
func createImageFromUIColor(_ color: UIColor) -> UIImage {
let rect = CGRect(x: 0, y: 0, width: 1, height: 1)
UIGraphicsBeginImageContext(rect.size)
let contextRef: CGContext = UIGraphicsGetCurrentContext()!
contextRef.setFillColor(color.cgColor)
contextRef.fill(rect)
let img: UIImage = UIGraphicsGetImageFromCurrentImageContext()!
UIGraphicsEndImageContext()
return img
}
// MARK : Handle NSNotification Method
@objc func handleAlertActionEnabledDidChangeNotification(_ notification: Notification) {
for i in 0..<buttons.count {
buttons[i].isEnabled = actions[i].isEnabled
}
}
@objc func handleKeyboardWillShowNotification(_ notification: Notification) {
if let userInfo = notification.userInfo as? [String: NSValue],
let keyboardSize = userInfo[UIResponder.keyboardFrameEndUserInfoKey]?.cgRectValue.size {
var _keyboardSize = keyboardSize
if ((UIDevice.current.systemVersion as NSString).floatValue < 8.0) {
if (currentOrientation().isLandscape) {
_keyboardSize = CGSize(width: _keyboardSize.height, height: _keyboardSize.width)
}
}
keyboardHeight = _keyboardSize.height
reloadAlertViewHeight()
containerViewBottomSpaceConstraint?.constant = -keyboardHeight
UIView.animate(withDuration: 0.25, animations: {
self.view.layoutIfNeeded()
})
}
}
@objc func handleKeyboardWillHideNotification(_ notification: Notification) {
keyboardHeight = 0.0
reloadAlertViewHeight()
containerViewBottomSpaceConstraint?.constant = keyboardHeight
UIView.animate(withDuration: 0.25, animations: {
self.view.layoutIfNeeded()
})
}
// MARK: Public Methods
// Attaches an action object to the alert or action sheet.
open func addAction(_ action: DOAlertAction) {
// Error
if (action.style == DOAlertActionStyle.cancel) {
for ac in actions as! [DOAlertAction] {
if (ac.style == DOAlertActionStyle.cancel) {
let error: NSError? = nil
NSException.raise(NSExceptionName(rawValue: "NSInternalInconsistencyException"), format:"DOAlertController can only have one action with a style of DOAlertActionStyleCancel", arguments:getVaList([error ?? "nil"]))
return
}
}
}
// Add Action
actions.append(action)
// Add Button
let button = UIButton()
button.layer.masksToBounds = true
button.setTitle(action.title, for: UIControl.State())
button.isEnabled = action.enabled
button.layer.cornerRadius = buttonCornerRadius
button.addTarget(self, action: #selector(DOAlertController.buttonTapped(_:)), for: .touchUpInside)
button.tag = buttons.count + 1
buttons.append(button)
buttonContainer.addSubview(button)
}
// Adds a text field to an alert.
open func addTextFieldWithConfigurationHandler(_ configurationHandler: ((UITextField?) -> Void)!) {
// You can add a text field only if the preferredStyle property is set to DOAlertControllerStyle.Alert.
if (!isAlert()) {
let error: NSError? = nil
NSException.raise(NSExceptionName(rawValue: "NSInternalInconsistencyException"), format: "Text fields can only be added to an alert controller of style DOAlertControllerStyleAlert", arguments:getVaList([error ?? "nil"]))
return
}
if (textFields == nil) {
textFields = []
}
let textField = UITextField()
textField.frame.size = CGSize(width: innerContentWidth, height: textFieldHeight)
textField.borderStyle = UITextField.BorderStyle.none
textField.backgroundColor = textFieldBgColor
textField.delegate = self
if ((configurationHandler) != nil) {
configurationHandler(textField)
}
textFields!.append(textField)
textFieldContainerView.addSubview(textField)
}
open func isAlert() -> Bool { return preferredStyle == .alert }
// MARK: UITextFieldDelegate Methods
open func textFieldShouldReturn(_ textField: UITextField) -> Bool {
if (textField.canResignFirstResponder) {
textField.resignFirstResponder()
self.dismiss(animated: true, completion: nil)
}
return true
}
// MARK: UIViewControllerTransitioningDelegate Methods
open
func animationController(forPresented presented: UIViewController, presenting: UIViewController, source: UIViewController) -> UIViewControllerAnimatedTransitioning? {
layoutView(presenting)
return DOAlertAnimation(isPresenting: true)
}
open func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
return DOAlertAnimation(isPresenting: false)
}
}
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