在iOS中显示一条消息，其function与Android中的Toastfunction相同
我需要知道在iOS中是否有任何方法像Android中的Toast消息。 也就是说，我需要显示几秒钟后自动解除的消息。 这与Android环境中Toast类的function类似。
您可以使用MBProgressHUD项目。
使用HUD模式MBProgressHUDModeText用于吐司式行为，
MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.navigationController.view animated:YES]; // Configure for text only and offset down hud.mode = MBProgressHUDModeText; hud.label.text = @"Some message..."; hud.margin = 10.f; hud.yOffset = 150.f; hud.removeFromSuperViewOnHide = YES; [hud hideAnimated:YES afterDelay:3];
NSString *message = @"Some message..."; UIAlertView *toast = [[UIAlertView alloc] initWithTitle:nil message:message delegate:nil cancelButtonTitle:nil otherButtonTitles:nil, nil]; [toast show]; int duration = 1; // duration in seconds dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{ [toast dismissWithClickedButtonIndex:0 animated:YES]; });
使用iOS 9或更高版本的UIAlertViewController
NSString *message = @"Some message..."; UIAlertController *alert = [UIAlertController alertControllerWithTitle:nil message:message preferredStyle:UIAlertControllerStyleAlert]; [self presentViewController:alert animated:YES completion:nil]; int duration = 1; // duration in seconds dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{ [alert dismissViewControllerAnimated:YES completion:nil]; });
Swift 3.2
let message = "Some message..." let alert = UIAlertController(title: nil, message: message, preferredStyle: .alert) self.present(alert, animated: true) // duration in seconds let duration: Double = 5 DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + duration) { alert.dismiss(animated: true) }
在Android中， Toast是一个短消息，在屏幕上显示一小段时间，然后自动消失，而不会中断用户与应用的交互。
所以很多来自Android背景的人都想知道什么是Toast的iOS版本。 除了目前的问题外，其他类似的问题可以在这里find。 答案是， iOS中没有与Toast完全相同的东西 。 已经提出的各种解决方法，但包括
- 用
UIView制作你自己的Toast（见这里 ， 在这里 ， 在 这里 ） - 导入一个模仿Toast的第三方项目（参见这里 ， 在 这里和这里 ）
- 用一个定时器使用一个无button的警报（见这里 ）
不过，我的build议是坚持iOS的标准UI选项。 不要试图让你的应用看起来和行为完全一样的Android版本。 想想如何重新包装它，使其外观和感觉像一个iOS应用程序。 请参阅以下链接进行一些select。
- 用于向用户临时显示信息的标准iOS选项概述。
考虑以传达相同信息的方式重新devise用户界面。 或者，如果信息非常重要，那么Alert可能就是答案。
Swift 4.0：
做一个新的swift文件。 （File-New-File-Empty Swift文件）。 将其命名为UIViewToast.Add下面的代码。
import UIKit func /(lhs: CGFloat, rhs: Int) -> CGFloat { return lhs / CGFloat(rhs) } let HRToastDefaultDuration = 2.0 let HRToastFadeDuration = 0.2 let HRToastHorizontalMargin : CGFloat = 10.0 let HRToastVerticalMargin : CGFloat = 10.0 let HRToastPositionDefault = "bottom" let HRToastPositionTop = "top" let HRToastPositionCenter = "center" // activity let HRToastActivityWidth : CGFloat = 100.0 let HRToastActivityHeight : CGFloat = 100.0 let HRToastActivityPositionDefault = "center" // image size let HRToastImageViewWidth : CGFloat = 80.0 let HRToastImageViewHeight: CGFloat = 80.0 // label setting let HRToastMaxWidth : CGFloat = 0.8; // 80% of parent view width let HRToastMaxHeight : CGFloat = 0.8; let HRToastFontSize : CGFloat = 16.0 let HRToastMaxTitleLines = 0 let HRToastMaxMessageLines = 0 // shadow appearance let HRToastShadowOpacity : CGFloat = 0.8 let HRToastShadowRadius : CGFloat = 6.0 let HRToastShadowOffset : CGSize = CGSize(width: 4.0, height: 4.0) let HRToastOpacity : CGFloat = 0.5 let HRToastCornerRadius : CGFloat = 10.0 var HRToastActivityView: UnsafePointer<UIView>? var HRToastTimer: UnsafePointer<Timer>? var HRToastView: UnsafePointer<UIView>? // Color Scheme let HRAppColor:UIColor = UIColor.black//UIappViewController().appUIColor let HRAppColor_2:UIColor = UIColor.white let HRToastHidesOnTap = true let HRToastDisplayShadow = false //HRToast (UIView + Toast using Swift) extension UIView { //public methods func makeToast(message msg: String) { self.makeToast(message: msg, duration: HRToastDefaultDuration, position: HRToastPositionDefault as AnyObject) } func makeToast(message msg: String, duration: Double, position: AnyObject) { let toast = self.viewForMessage(msg: msg, title: nil, image: nil) self.showToast(toast: toast!, duration: duration, position: position) } func makeToast(message msg: String, duration: Double, position: AnyObject, title: String) { let toast = self.viewForMessage(msg: msg, title: title, image: nil) self.showToast(toast: toast!, duration: duration, position: position) } func makeToast(message msg: String, duration: Double, position: AnyObject, image: UIImage) { let toast = self.viewForMessage(msg: msg, title: nil, image: image) self.showToast(toast: toast!, duration: duration, position: position) } func makeToast(message msg: String, duration: Double, position: AnyObject, title: String, image: UIImage) { let toast = self.viewForMessage(msg: msg, title: title, image: image) self.showToast(toast: toast!, duration: duration, position: position) } func showToast(toast: UIView) { self.showToast(toast: toast, duration: HRToastDefaultDuration, position: HRToastPositionDefault as AnyObject) } func showToast(toast: UIView, duration: Double, position: AnyObject) { let existToast = objc_getAssociatedObject(self, &HRToastView) as! UIView? if existToast != nil { if let timer: Timer = objc_getAssociatedObject(existToast!, &HRToastTimer) as? Timer { timer.invalidate(); } self.hideToast(toast: existToast!, force: false); } toast.center = self.centerPointForPosition(position: position, toast: toast) toast.alpha = 0.0 if HRToastHidesOnTap { let tapRecognizer = UITapGestureRecognizer(target: toast, action: #selector(handleToastTapped(recognizer:))) toast.addGestureRecognizer(tapRecognizer) toast.isUserInteractionEnabled = true; toast.isExclusiveTouch = true; } self.addSubview(toast) objc_setAssociatedObject(self, &HRToastView, toast, objc_AssociationPolicy.OBJC_ASSOCIATION_RETAIN) UIView.animate(withDuration: HRToastFadeDuration, delay: 0.0, options: ([.curveEaseOut, .allowUserInteraction]), animations: { toast.alpha = 1.0 }, completion: { (finished: Bool) in let timer = Timer.scheduledTimer(timeInterval: duration, target: self, selector: #selector(self.toastTimerDidFinish(timer:)), userInfo: toast, repeats: false) objc_setAssociatedObject(toast, &HRToastTimer, timer, objc_AssociationPolicy.OBJC_ASSOCIATION_RETAIN_NONATOMIC) }) } func makeToastActivity() { self.makeToastActivity(position: HRToastActivityPositionDefault as AnyObject) } func showToastActivity() { self.isUserInteractionEnabled = false self.makeToastActivity() } func removeToastActivity() { self.isUserInteractionEnabled = true self.hideToastActivity() } func makeToastActivityWithMessage(message msg: String){ self.makeToastActivity(position: HRToastActivityPositionDefault as AnyObject, message: msg) } func makeToastActivityWithMessage(message msg: String,addOverlay: Bool){ self.makeToastActivity(position: HRToastActivityPositionDefault as AnyObject, message: msg,addOverlay: true) } func makeToastActivity(position pos: AnyObject, message msg: String = "",addOverlay overlay: Bool = false) { let existingActivityView: UIView? = objc_getAssociatedObject(self, &HRToastActivityView) as? UIView if existingActivityView != nil { return } let activityView = UIView(frame: CGRect(x:0, y:0, width: self.frame.width, height: self.frame.height)) activityView.center = self.centerPointForPosition(position: pos, toast: activityView) activityView.alpha = 0.0 activityView.autoresizingMask = ([.flexibleLeftMargin, .flexibleTopMargin, .flexibleRightMargin, .flexibleBottomMargin]) activityView.layer.cornerRadius = HRToastCornerRadius if HRToastDisplayShadow { activityView.layer.shadowColor = UIColor.black.cgColor activityView.layer.shadowOpacity = Float(HRToastShadowOpacity) activityView.layer.shadowRadius = HRToastShadowRadius activityView.layer.shadowOffset = HRToastShadowOffset } let activityIndicatorView = UIActivityIndicatorView(activityIndicatorStyle: .whiteLarge) activityIndicatorView.center = CGPoint(x:activityView.bounds.size.width / 2, y: activityView.bounds.size.height / 2) activityIndicatorView.color = HRAppColor activityView.addSubview(activityIndicatorView) activityIndicatorView.startAnimating() if (!msg.isEmpty){ activityIndicatorView.frame.origin.y -= 10 let activityMessageLabel = UILabel(frame: CGRect(x: activityView.bounds.origin.x, y: (activityIndicatorView.frame.origin.y + activityIndicatorView.frame.size.height + 10), width: activityView.bounds.size.width, height: 20)) activityMessageLabel.textColor = UIColor.white activityMessageLabel.font = (msg.count<=10) ? UIFont(name:activityMessageLabel.font.fontName, size: 16) : UIFont(name:activityMessageLabel.font.fontName, size: 16) activityMessageLabel.textAlignment = .center activityMessageLabel.text = msg + ".." if overlay { activityMessageLabel.textColor = UIColor.white activityView.backgroundColor = HRAppColor.withAlphaComponent(HRToastOpacity) activityIndicatorView.color = UIColor.white } else { activityMessageLabel.textColor = HRAppColor activityView.backgroundColor = UIColor.clear activityIndicatorView.color = HRAppColor } activityView.addSubview(activityMessageLabel) } self.addSubview(activityView) // associate activity view with self objc_setAssociatedObject(self, &HRToastActivityView, activityView, objc_AssociationPolicy.OBJC_ASSOCIATION_RETAIN_NONATOMIC) UIView.animate(withDuration: HRToastFadeDuration, delay: 0.0, options: UIViewAnimationOptions.curveEaseOut, animations: { activityView.alpha = 1.0 }, completion: nil) self.isUserInteractionEnabled = false } func hideToastActivity() { self.isUserInteractionEnabled = true let existingActivityView = objc_getAssociatedObject(self, &HRToastActivityView) as! UIView? if existingActivityView == nil { return } UIView.animate(withDuration: HRToastFadeDuration, delay: 0.0, options: UIViewAnimationOptions.curveEaseOut, animations: { existingActivityView!.alpha = 0.0 }, completion: { (finished: Bool) in existingActivityView!.removeFromSuperview() objc_setAssociatedObject(self, &HRToastActivityView, nil, objc_AssociationPolicy.OBJC_ASSOCIATION_RETAIN_NONATOMIC) }) } /* * private methods (helper) */ func hideToast(toast: UIView) { self.isUserInteractionEnabled = true self.hideToast(toast: toast, force: false); } func hideToast(toast: UIView, force: Bool) { let completeClosure = { (finish: Bool) -> () in toast.removeFromSuperview() objc_setAssociatedObject(self, &HRToastTimer, nil, objc_AssociationPolicy.OBJC_ASSOCIATION_RETAIN_NONATOMIC) } if force { completeClosure(true) } else { UIView.animate(withDuration: HRToastFadeDuration, delay: 0.0, options: ([.curveEaseIn, .beginFromCurrentState]), animations: { toast.alpha = 0.0 }, completion:completeClosure) } } @objc func toastTimerDidFinish(timer: Timer) { self.hideToast(toast: timer.userInfo as! UIView) } @objc func handleToastTapped(recognizer: UITapGestureRecognizer) { // var timer = objc_getAssociatedObject(self, &HRToastTimer) as! NSTimer // timer.invalidate() self.hideToast(toast: recognizer.view!) } func centerPointForPosition(position: AnyObject, toast: UIView) -> CGPoint { if position is String { let toastSize = toast.bounds.size let viewSize = self.bounds.size if position.lowercased == HRToastPositionTop { return CGPoint(x: viewSize.width/2, y: toastSize.height/2 + HRToastVerticalMargin) } else if position.lowercased == HRToastPositionDefault { return CGPoint(x:viewSize.width/2, y:viewSize.height - toastSize.height - 15 - HRToastVerticalMargin) } else if position.lowercased == HRToastPositionCenter { return CGPoint(x:viewSize.width/2, y:viewSize.height/2) } } else if position is NSValue { return position.cgPointValue } print("Warning: Invalid position for toast.") return self.centerPointForPosition(position: HRToastPositionDefault as AnyObject, toast: toast) } func viewForMessage(msg: String?, title: String?, image: UIImage?) -> UIView? { if msg == nil && title == nil && image == nil { return nil } var msgLabel: UILabel? var titleLabel: UILabel? var imageView: UIImageView? let wrapperView = UIView() wrapperView.autoresizingMask = ([.flexibleLeftMargin, .flexibleRightMargin, .flexibleTopMargin, .flexibleBottomMargin]) wrapperView.layer.cornerRadius = HRToastCornerRadius wrapperView.backgroundColor = UIColor.black.withAlphaComponent(HRToastOpacity) if HRToastDisplayShadow { wrapperView.layer.shadowColor = UIColor.black.cgColor wrapperView.layer.shadowOpacity = Float(HRToastShadowOpacity) wrapperView.layer.shadowRadius = HRToastShadowRadius wrapperView.layer.shadowOffset = HRToastShadowOffset } if image != nil { imageView = UIImageView(image: image) imageView!.contentMode = .scaleAspectFit imageView!.frame = CGRect(x:HRToastHorizontalMargin, y: HRToastVerticalMargin, width: CGFloat(HRToastImageViewWidth), height: CGFloat(HRToastImageViewHeight)) } var imageWidth: CGFloat, imageHeight: CGFloat, imageLeft: CGFloat if imageView != nil { imageWidth = imageView!.bounds.size.width imageHeight = imageView!.bounds.size.height imageLeft = HRToastHorizontalMargin } else { imageWidth = 0.0; imageHeight = 0.0; imageLeft = 0.0 } if title != nil { titleLabel = UILabel() titleLabel!.numberOfLines = HRToastMaxTitleLines titleLabel!.font = UIFont.boldSystemFont(ofSize: HRToastFontSize) titleLabel!.textAlignment = .center titleLabel!.lineBreakMode = .byWordWrapping titleLabel!.textColor = UIColor.white titleLabel!.backgroundColor = UIColor.clear titleLabel!.alpha = 1.0 titleLabel!.text = title // size the title label according to the length of the text let maxSizeTitle = CGSize(width: (self.bounds.size.width * HRToastMaxWidth) - imageWidth, height: self.bounds.size.height * HRToastMaxHeight) let expectedHeight = title!.stringHeightWithFontSize(fontSize: HRToastFontSize, width: maxSizeTitle.width) titleLabel!.frame = CGRect(x: 0.0, y: 0.0, width: maxSizeTitle.width, height: expectedHeight) } if msg != nil { msgLabel = UILabel(); msgLabel!.numberOfLines = HRToastMaxMessageLines msgLabel!.font = UIFont.systemFont(ofSize: HRToastFontSize) msgLabel!.lineBreakMode = .byWordWrapping msgLabel!.textAlignment = .center msgLabel!.textColor = UIColor.white msgLabel!.backgroundColor = UIColor.clear msgLabel!.alpha = 1.0 msgLabel!.text = msg let maxSizeMessage = CGSize(width: (self.bounds.size.width * HRToastMaxWidth) - imageWidth, height: self.bounds.size.height * HRToastMaxHeight) let expectedHeight = msg!.stringHeightWithFontSize(fontSize: HRToastFontSize, width: maxSizeMessage.width) msgLabel!.frame = CGRect(x: 0.0, y: 0.0, width: maxSizeMessage.width, height: expectedHeight) } var titleWidth: CGFloat, titleHeight: CGFloat, titleTop: CGFloat, titleLeft: CGFloat if titleLabel != nil { titleWidth = titleLabel!.bounds.size.width titleHeight = titleLabel!.bounds.size.height titleTop = HRToastVerticalMargin titleLeft = imageLeft + imageWidth + HRToastHorizontalMargin } else { titleWidth = 0.0; titleHeight = 0.0; titleTop = 0.0; titleLeft = 0.0 } var msgWidth: CGFloat, msgHeight: CGFloat, msgTop: CGFloat, msgLeft: CGFloat if msgLabel != nil { msgWidth = msgLabel!.bounds.size.width msgHeight = msgLabel!.bounds.size.height msgTop = titleTop + titleHeight + HRToastVerticalMargin msgLeft = imageLeft + imageWidth + HRToastHorizontalMargin } else { msgWidth = 0.0; msgHeight = 0.0; msgTop = 0.0; msgLeft = 0.0 } let largerWidth = max(titleWidth, msgWidth) let largerLeft = max(titleLeft, msgLeft) // set wrapper view's frame let wrapperWidth = max(imageWidth + HRToastHorizontalMargin * 2, largerLeft + largerWidth + HRToastHorizontalMargin) let wrapperHeight = max(msgTop + msgHeight + HRToastVerticalMargin, imageHeight + HRToastVerticalMargin * 2) wrapperView.frame = CGRect(x: 0.0, y: 0.0, width: wrapperWidth, height: wrapperHeight) // add subviews if titleLabel != nil { titleLabel!.frame = CGRect(x: titleLeft, y: titleTop, width: titleWidth, height: titleHeight) wrapperView.addSubview(titleLabel!) } if msgLabel != nil { msgLabel!.frame = CGRect(x: msgLeft, y: msgTop, width: msgWidth, height: msgHeight) wrapperView.addSubview(msgLabel!) } if imageView != nil { wrapperView.addSubview(imageView!) } return wrapperView } } extension String { func stringHeightWithFontSize(fontSize: CGFloat,width: CGFloat) -> CGFloat { let font = UIFont.systemFont(ofSize: fontSize) let size = CGSize(width: width, height: CGFloat.greatestFiniteMagnitude) let paragraphStyle = NSMutableParagraphStyle() paragraphStyle.lineBreakMode = .byWordWrapping; let attributes = [NSAttributedStringKey.font:font, NSAttributedStringKey.paragraphStyle:paragraphStyle.copy()] let text = self as NSString let rect = text.boundingRect(with: size, options:.usesLineFragmentOrigin, attributes: attributes, context:nil) return rect.size.height } }
用法：
self.view.makeToast(message: "Simple Toast") self.view.makeToast(message: "Simple Toast", duration: 2.0, position:HRToastPositionTop) self.view.makeToast(message: "Simple Toast", duration: 2.0, position: HRToastPositionCenter, image: UIImage(named: "ic_120x120")!) self.view.makeToast(message: "It is just awesome", duration: 2.0, position: HRToastPositionDefault, title: "Simple Toast") self.view.makeToast(message: "It is just awesome", duration: 2.0, position: HRToastPositionCenter, title: "Simple Toast", image: UIImage(named: "ic_120x120")!) self.view.makeToastActivity() self.view.makeToastActivity(position: HRToastPositionCenter) self.view.makeToastActivity(position: HRToastPositionDefault, message: "Loading") self.view.makeToastActivityWithMessage(message: "Loading") // Hide Toast self.view.hideToast(toast: self.view) self.view.hideToast(toast: self.view, force: true) self.view.hideToastActivity()
对于那些使用Xamarin.IOS你可以这样做：
new UIAlertView(null, message, null, "OK", null).Show();
使用UIKit; 是必须的。
如果你想要一个iOS风格的，从Github下载这个框架
iOS Toast Alert View Framework
一旦你导入了框架，这个例子在你的UIViewController上工作。
例1：
//Manual let tav = ToastAlertView() tav.message = "Hey!" tav.image = UIImage(named: "img1")! tav.show() //tav.dismiss() to Hide
例2：
//Toast Alert View with Time Dissmis Only self.showToastAlert("5 Seconds", image: UIImage(named: "img1")!, hideWithTap: false, hideWithTime: true, hideTime: 5.0)
最后：
对于Swift 3＆4 ：
使用Toaster库
Toast(text: "Hello, world!", duration: Delay.long)
对于Swift 2 ：
使用JLToast
使用警报的Android Toast快速实现，在3秒后消失。
func showAlertView(title: String?, message: String?) { let alertController = UIAlertController(title: title, message: message, preferredStyle: .Alert) let okAction = UIAlertAction(title: "OK", style: .Cancel, handler: nil) alertController.addAction(okAction) self.presentViewController(alertController, animated: true, completion: nil) let delayTime = dispatch_time(DISPATCH_TIME_NOW, Int64(3 * Double(NSEC_PER_SEC))) dispatch_after(delayTime, dispatch_get_main_queue()) { print("Bye. Lovvy") alertController.dismissViewControllerAnimated(true, completion: nil) } }
简单地调用它：
self.showAlertView("Message sent...", message: nil)
同样，如果在Xamarin上使用IOS，组件存储中会有一个名为BTProgressHUD的新组件
1）从这个链接下载toast-notifications-ios
2）转到目标 – >构build阶段并添加-fno-objc-arc到相关文件的“编译器源代码”
3）制作一个函数， #import "iToast.h"
-(void)showToast :(NSString *)strMessage { iToast * objiTost = [iToast makeText:strMessage]; [objiTost setFontSize:11]; [objiTost setDuration:iToastDurationNormal]; [objiTost setGravity:iToastGravityBottom]; [objiTost show]; }
4）打电话，你需要显示吐司消息
[self showToast:@"This is example text."];
对于Swift 2.0和考虑https://stackoverflow.com/a/5079536/6144027
//TOAST let alertController = UIAlertController(title: "", message: "This is a Toast.LENGTH_SHORT", preferredStyle: .Alert) self!.presentViewController(alertController, animated: true, completion: nil) let delayTime = dispatch_time(DISPATCH_TIME_NOW, Int64(2.0 * Double(NSEC_PER_SEC))) dispatch_after(delayTime, dispatch_get_main_queue()) { alertController.dismissViewControllerAnimated(true, completion: nil) }
我想了一个简单的方法来敬酒！ 使用UIAlertController没有button！ 我们使用button文字作为我们的信息！ 得到它？ 见下面的代码：
func alert(title: String?, message: String?, bdy:String) { let alertController = UIAlertController(title: title, message: message, preferredStyle: .Alert) let okAction = UIAlertAction(title: bdy, style: .Cancel, handler: nil) alertController.addAction(okAction) self.presentViewController(alertController, animated: true, completion: nil) let delayTime = dispatch_time(DISPATCH_TIME_NOW, Int64(2 * Double(NSEC_PER_SEC))) dispatch_after(delayTime, dispatch_get_main_queue()) { //print("Bye. Lovvy") alertController.dismissViewControllerAnimated(true, completion: nil) } }
像这样使用它：
self.alert(nil,message:nil,bdy:"Simple Toast!") // toast self.alert(nil,message:nil,bdy:"Alert") // alert with "Alert" button
这是你的解决scheme：
把下面的代码放到你的Xcode项目中，
- (void)showMessage:(NSString*)message atPoint:(CGPoint)point { const CGFloat fontSize = 16; UILabel* label = [[UILabel alloc] initWithFrame:CGRectZero]; label.backgroundColor = [UIColor clearColor]; label.font = [UIFont fontWithName:@"Helvetica-Bold" size:fontSize]; label.text = message; label.textColor = UIColorFromRGB(0x07575B); [label sizeToFit]; label.center = point; [self.view addSubview:label]; [UIView animateWithDuration:0.3 delay:1 options:0 animations:^{ label.alpha = 0; } completion:^(BOOL finished) { label.hidden = YES; [label removeFromSuperview]; }]; }
如何使用 ？
[self showMessage:@"Toast in iOS" atPoint:CGPointMake(160, 695)];
对我来说，这个解决scheme工作正常： https ： //github.com/cruffenach/CRToast
示例如何使用它：
NSDictionary *options = @{ kCRToastTextKey : @"Hello World!", kCRToastTextAlignmentKey : @(NSTextAlignmentCenter), kCRToastBackgroundColorKey : [UIColor redColor], kCRToastAnimationInTypeKey : @(CRToastAnimationTypeGravity), kCRToastAnimationOutTypeKey : @(CRToastAnimationTypeGravity), kCRToastAnimationInDirectionKey : @(CRToastAnimationDirectionLeft), kCRToastAnimationOutDirectionKey : @(CRToastAnimationDirectionRight) }; [CRToastManager showNotificationWithOptions:options completionBlock:^{ NSLog(@"Completed"); }];
Swift 4语法的延迟时间为3秒：
present(alertController, animated: true, completion: nil) DispatchQueue.main.asyncAfter(deadline: .now() + 3) { self.dismiss(animated: true, completion: nil) }
