自定义AlertView(Swift)
MyAlertView.swift
// Pop Up Styles
enum MyAlertViewStyle: Int {
case success
case error
case notice
case warning
case info
}
// Allow alerts to be closed/renamed in a chainable manner
// Example: MyAlertView().showSuccess(self, title: "Test", subTitle: "Value").Close()
//class MyAlertViewClose {
// let alertview: MyAlertView
//
// // Initialisation and Title/Subtitle/Close functions
// init(alertview: MyAlertView) { self.alertview = alertview }
// func setTitle(_ title: String) { self.alertview.labelView.text = title; }
// func setSubTitle(_ subTitle: String) { self.alertview.labelViewDescription.text = subTitle; }
// func Close() { self.alertview.doneButtonAction() }
//}
class MyAlertView: UIView {
let kDefaultShadowOpacity: CGFloat = 0.7;
let kCircleHeight: CGFloat = 56.0;
let kCircleTopPosition: CGFloat = -12; // Should not be defined here. Make it dynamic
let kCircleBackgroundTopPosition: CGFloat = -15; // Should not be defined here. Make it dynamic
let kCircleHeightBackground: CGFloat = 62.0;
let kCircleIconHeight: CGFloat = 20.0;
let kWindowWidth: CGFloat = 240.0;
let kWindowHeight: CGFloat = 228.0;
// Font
let kDefaultFont: NSString = "HelveticaNeue"
// Members declaration
var labelView: UILabel
var labelViewDescription: UILabel
var shadowView: UIView
var contentView: UIView
var circleView: UIView
var circleViewBackground: UIView
var circleIconImageView: UIImageView
var doneButton: UIButton
var rootViewController: UIViewController
var durationTimer: Timer!
init () {
// Content View
self.contentView = UIView(frame: CGRect(x: 0, y: kCircleHeight / 4, width: kWindowWidth, height: kWindowHeight))
self.contentView.backgroundColor = UIColor(white: 1, alpha: 1);
self.contentView.layer.cornerRadius = 5;
self.contentView.layer.masksToBounds = true;
self.contentView.layer.borderWidth = 0.5;
// Circle View
self.circleView = UIView(frame: CGRect(x: kWindowWidth / 2 - kCircleHeight / 2, y: kCircleTopPosition, width: kCircleHeight, height: kCircleHeight))
self.circleView.layer.cornerRadius = self.circleView.frame.size.height / 2;
// Circle View Background
self.circleViewBackground = UIView(frame: CGRect(x: kWindowWidth / 2 - kCircleHeightBackground / 2, y: kCircleBackgroundTopPosition, width: kCircleHeightBackground, height: kCircleHeightBackground))
self.circleViewBackground.layer.cornerRadius = self.circleViewBackground.frame.size.height / 2;
self.circleViewBackground.backgroundColor = UIColor.white
// Circle View Image
self.circleIconImageView = UIImageView(frame: CGRect(x: kCircleHeight / 2 - kCircleIconHeight / 2, y: kCircleHeight / 2 - kCircleIconHeight / 2, width: kCircleIconHeight, height: kCircleIconHeight))
self.circleView.addSubview(self.circleIconImageView)
// Title
self.labelView = UILabel(frame: CGRect(x: 12, y: kCircleHeight / 2 + 22, width: kWindowWidth - 24, height: 40))
self.labelView.numberOfLines = 1
self.labelView.textAlignment = NSTextAlignment.center
self.labelView.font = UIFont(name: kDefaultFont as String, size: 20)
self.contentView.addSubview(self.labelView)
// Subtitle
self.labelViewDescription = UILabel(frame: CGRect(x: 12, y: 84, width: kWindowWidth - 24, height: 80))
self.labelViewDescription.numberOfLines = 3
self.labelViewDescription.textAlignment = NSTextAlignment.center
self.labelViewDescription.font = UIFont(name: kDefaultFont as String, size: 14)
self.contentView.addSubview(self.labelViewDescription)
// Shadow View
self.shadowView = UIView(frame: UIScreen.main.bounds)
self.shadowView.backgroundColor = UIColor.black
// Done Button
self.doneButton = UIButton(frame: CGRect(x: 12, y: kWindowHeight - 52, width: kWindowWidth - 24, height: 40))
self.doneButton.layer.cornerRadius = 3
self.doneButton.layer.masksToBounds = true
self.doneButton.setTitle("Done", for: UIControlState())
self.doneButton.titleLabel?.font = UIFont(name: kDefaultFont as String, size: 14)
self.contentView.addSubview(self.doneButton)
// Root view controller
self.rootViewController = UIViewController()
// Superclass initiation
super.init(frame: CGRect(x: ((320 - kWindowWidth) / 2), y: 0 - kWindowHeight, width: kWindowWidth, height: kWindowHeight))
// Show notice on screen
self.addSubview(self.contentView)
self.addSubview(self.circleViewBackground)
self.addSubview(self.circleView)
// Colours
self.contentView.backgroundColor = UIColorFromRGB(0xFFFFFF)
self.labelView.textColor = UIColorFromRGB(0x4D4D4D)
self.labelViewDescription.textColor = UIColorFromRGB(0x4D4D4D)
self.contentView.layer.borderColor = UIColorFromRGB(0xCCCCCC).cgColor
// On complete.
self.doneButton.addTarget(self, action: #selector(MyAlertView.doneButtonAction), for: UIControlEvents.touchUpInside)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
// showTitle(view, title, subTitle, style)
func showTitle(_ view: UIViewController, title: String, subTitle: String, style: MyAlertViewStyle) {
return showTitle(view, title: title, subTitle: subTitle, completeText: nil, style: style)
}
// showSuccess(view, title, subTitle)
func showSuccess(_ view: UIViewController, title: String, subTitle: String) {
return showTitle(view, title: title, subTitle: subTitle, completeText: nil, style: MyAlertViewStyle.success);
}
// showError(view, title, subTitle)
func showError(_ view: UIViewController, title: String, subTitle: String) {
return showTitle(view, title: title, subTitle: subTitle, completeText: nil, style: MyAlertViewStyle.error);
}
// showNotice(view, title, subTitle)
func showNotice(_ view: UIViewController, title: String, subTitle: String) {
return showTitle(view, title: title, subTitle: subTitle, completeText: nil, style: MyAlertViewStyle.notice);
}
// showWarning(view, title, subTitle)
func showWarning(_ view: UIViewController, title: String, subTitle: String) {
return showTitle(view, title: title, subTitle: subTitle, completeText: nil, style: MyAlertViewStyle.warning);
}
// showInfo(view, title, subTitle)
func showInfo(_ view: UIViewController, title: String, subTitle: String) {
return showTitle(view, title: title, subTitle: subTitle, completeText: nil, style: MyAlertViewStyle.info);
}
// showTitle(view, title, subTitle, duration, style)
func showTitle(_ view:UIViewController, title: String, subTitle: String, completeText: String?, style: MyAlertViewStyle) {
self.alpha = 0;
self.rootViewController = view
self.rootViewController.view.addSubview(self.shadowView)
self.rootViewController.view.addSubview(self)
// Complete text
if(completeText != nil) {
self.doneButton.setTitle(completeText, for: UIControlState())
}
// Alert colour/icon
var viewColor: UIColor = UIColor()
var iconImageName: NSString = ""
// Icon style
switch(style) {
case MyAlertViewStyle.success:
viewColor = UIColorFromRGB(0x22B573);
iconImageName = "notification-success"
case MyAlertViewStyle.error:
viewColor = UIColorFromRGB(0xC1272D);
iconImageName = "notification-error"
case MyAlertViewStyle.notice:
viewColor = UIColorFromRGB(0x727375)
iconImageName = "notification-notice"
case MyAlertViewStyle.warning:
viewColor = UIColorFromRGB(0xFFD110);
iconImageName = "notification-warning"
case MyAlertViewStyle.info:
viewColor = UIColorFromRGB(0x2866BF);
iconImageName = "notification-info"
}
// Title
if ((title as NSString).length > 0 ) {
self.labelView.text = title;
}
// Subtitle
if ((subTitle as NSString).length > 0) {
self.labelViewDescription.text = subTitle;
}
// Alert view colour and images
self.doneButton.backgroundColor = viewColor;
self.circleView.backgroundColor = viewColor;
self.circleIconImageView.image = UIImage(named: iconImageName as String)
// Animate in the alert view
UIView.animate(withDuration: 0.2, animations: {
self.shadowView.alpha = self.kDefaultShadowOpacity
var frame:CGRect = self.frame;
frame.origin.y = self.rootViewController.view.center.y - 100;
self.frame = frame;
self.alpha = 1;
}, completion: { finished in
UIView.animate(withDuration: 0.2, animations: {
self.center = self.rootViewController.view.center;
}, completion: { finished in })
})
}
// When click 'Done' button, hide view.
func doneButtonAction() { hideView(); }
//Close MyAlertView By duration
func hideMyAlertView(duration: TimeInterval?) {
// Adding duration
if (duration != nil) {
durationTimer?.invalidate()
durationTimer = Timer.scheduledTimer(timeInterval: duration!, target: self, selector: #selector(MyAlertView.hideView), userInfo: nil, repeats: false)
}
}
// Close MyAlertView
func hideView() {
UIView.animate(withDuration: 0.2, animations: {
self.shadowView.alpha = 0;
self.alpha = 0;
}, completion: { finished in
self.shadowView.removeFromSuperview()
self.removeFromSuperview()
})
}
// Helper function to convert from RGB to UIColor
func UIColorFromRGB(_ rgbValue: UInt) -> UIColor {
return UIColor(
red: CGFloat((rgbValue & 0xFF0000) >> 16) / 255.0,
green: CGFloat((rgbValue & 0x00FF00) >> 8) / 255.0,
blue: CGFloat(rgbValue & 0x0000FF) / 255.0,
alpha: CGFloat(1.0)
)
}
}
ViewController.swift
import UIKit
let kSuccessTitle: NSString = "Congratulations"
let kErrorTitle: NSString = "Connection error"
let kNoticeTitle: NSString = "Notice"
let kWarningTitle: NSString = "Warning"
let kInfoTitle: NSString = "Info"
let kSubtitle: NSString = "You've just displayed this awesome Pop Up View"
let kDefaultAnimationDuration = 2.0
class ViewController: UIViewController {
let alertView = MyAlertView()
override func viewDidLoad() {
super.viewDidLoad()
}
@IBAction func success(_ sender: Any) {
alertView.showSuccess(self, title: kSuccessTitle as String, subTitle: kSubtitle as String)
alertView.hideMyAlertView(duration: 1.0)
}
@IBAction func error(_ sender: Any) {
alertView.showError(self, title: kErrorTitle as String, subTitle: kSubtitle as String)
alertView.hideMyAlertView(duration: 2.0)
}
@IBAction func notice(_ sender: Any) {
alertView.showNotice(self, title: kNoticeTitle as String, subTitle: kSubtitle as String)
alertView.hideMyAlertView(duration: 3.0)
}
@IBAction func warning(_ sender: Any) {
alertView.showWarning(self, title: kWarningTitle as String, subTitle: kSubtitle as String)
alertView.hideMyAlertView(duration: 4.0)
}
@IBAction func info(_ sender: Any) {
alertView.showInfo(self, title: kInfoTitle as String, subTitle: kSubtitle as String)
alertView.hideMyAlertView(duration: 5.0)
}
}
效果图如下：
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