'UIAlertView' 在 iOS 9.0 中被弃用。使用 UIAlertController 和首选样式 UIAlertControllerStyleAlert 代替

'UIAlertView' was deprecated in iOS 9.0. Use UIAlertController with a preferredStyle of UIAlertControllerStyleAlert instead

提问by user5513630

I have see more so answers , but nothing helped.Here is my older alert and action for that

我看到了更多这样的答案，但没有任何帮助。这是我较早的警报和行动

override func viewWillAppear(animated: Bool) {
    if Reachability.isConnectedToNetwork() == true {
        print("internet connection ok")
    } else 
    {
        print("internet not ok")
        let alertView: UIAlertView = UIAlertView(title: "Alert ", message: "connect to internet", delegate: self, cancelButtonTitle: "settings", otherButtonTitles: "cancel")
        alertView.show()
        return       
    }       
}

func alertView(alertView: UIAlertView, clickedButtonAtIndex buttonIndex: Int)
{
    if buttonIndex == 0 {
        //This will open ios devices wifi settings
        UIApplication.sharedApplication().openURL(NSURL(string: "prefs:root")!)
    }
    else if buttonIndex == 1
    {
        //TODO for cancel
        exit(0) 
    }
}

In that i am getting warning :

我收到警告：

'UIAlertView' was deprecated in iOS 9.0. Use UIAlertController with a preferredStyle of UIAlertControllerStyleAlert instead

'UIAlertView' 在 iOS 9.0 中被弃用。使用 UIAlertController 和首选样式 UIAlertControllerStyleAlert 代替

I tried :

我试过 ：

let alert = UIAlertController(title: "Alert", message: "My Alert for test", preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.Default, handler: nil))
alert.addAction(UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Default, handler: {    (action:UIAlertAction!) in 
        print("you have pressed the Cancel button")
    }))
self.presentViewController(alert, animated: true, completion: nil)

But to add two button and add the index path of button press method link my older code,I am not able to do that. Nothing action happening fro my uialert button,

但是要添加两个按钮并添加按钮按下方法的索引路径链接我的旧代码，我无法做到这一点。我的 uialert 按钮没有任何动作，

Please help me out,How can i remove that warnings and recode my Uialert with my two button action.

请帮帮我，我怎样才能删除那个警告并用我的两个按钮动作重新编码我的 Uialert。

I am new to swift.Your help will be useful.Thanks!

我是 swift 的新手。你的帮助会很有用。谢谢！

回答by Kirit Modi

See this Code Destructive and OK buttons in UIAlertController:

请参阅以下代码破坏性和确定按钮UIAlertController：

let alertController = UIAlertController(title: "Destructive", message: "Simple alertView demo with Destructive and Ok.", preferredStyle: UIAlertControllerStyle.alert) //Replace UIAlertControllerStyle.Alert by UIAlertControllerStyle.alert
let DestructiveAction = UIAlertAction(title: "Destructive", style: UIAlertActionStyle.Destructive) {
    (result : UIAlertAction) -> Void in
    print("Destructive")
}

// Replace UIAlertActionStyle.Default by UIAlertActionStyle.default
let okAction = UIAlertAction(title: "OK", style: UIAlertActionStyle.default) {
    (result : UIAlertAction) -> Void in
    print("OK")
}

alertController.addAction(DestructiveAction)
alertController.addAction(okAction)
self.presentViewController(alertController, animated: true, completion: nil)

Swift 3:

斯威夫特 3：

let alertController = UIAlertController(title: "Destructive", message: "Simple alertView demo with Destructive and Ok.", preferredStyle: UIAlertControllerStyle.alert) //Replace UIAlertControllerStyle.Alert by UIAlertControllerStyle.alert

let DestructiveAction = UIAlertAction(title: "Destructive", style: UIAlertActionStyle.destructive) {
                        (result : UIAlertAction) -> Void in
    print("Destructive")
}

                    // Replace UIAlertActionStyle.Default by UIAlertActionStyle.default

let okAction = UIAlertAction(title: "OK", style: UIAlertActionStyle.default) {
                        (result : UIAlertAction) -> Void in
    print("OK")
}

alertController.addAction(DestructiveAction)
alertController.addAction(okAction)
self.present(alertController, animated: true, completion: nil)

See Alert With Destructive and OK Button:

请参阅带有破坏性和确定按钮的警报：

回答by Fred Sousa

In Swift 3, you can write this:

在Swift 3 中，你可以这样写：

let alertController = UIAlertController(title: "Title", message: "This is my text", preferredStyle: UIAlertControllerStyle.alert)

let okAction = UIAlertAction(title: "OK", style: UIAlertActionStyle.default)  
{ 
     (result : UIAlertAction) -> Void in
      print("You pressed OK")
}
alertController.addAction(okAction)
self.present(alertController, animated: true, completion: nil)

回答by 9BallOnTheSnap

For a basic alert message I like using an extension on UIViewController:

对于基本的警报消息，我喜欢在 UIViewController 上使用扩展：

extension UIViewController {
func alertMessageOk(title: String, message: String) {
    let alert = UIAlertController(title: title, message: message, preferredStyle: UIAlertControllerStyle.alert)
    let action = UIAlertAction(title: "Ok", style: .default, handler: nil)
    alert.addAction(action)
    present(alert, animated: true, completion: nil)
   }
}

Usage: self.alertMessageOk(title: "Test Title", message: "Test message")

用法： self.alertMessageOk(title: "Test Title", message: "Test message")

回答by Sébastien REMY

Swift 3

斯威夫特 3

    // Create message
     let alertController = UIAlertController(title: "Title",
                                           message: "Message",
                                    preferredStyle: .actionSheet)

    // Clear Action
    let clearAction = UIAlertAction(title: "Clear",
                                    style: .destructive,
                                  handler: { (action:UIAlertAction!) in
                         print ("clear")
    })
    alertController.addAction(clearAction)

    // Cancel
    let cancelAction = UIAlertAction(title: "Cancel",
                                     style: .cancel,
                                   handler: { (action:UIAlertAction!) in
                                print ("Cancel")
    })
    alertController.addAction(cancelAction)

    // Present Alert
    self.present(alertController,
                 animated: true,
                 completion:nil)

回答by Himanshu jamnani

  UIAlertController *AC = UIAlertController.alertControllerWithTitle("Title",message:"Message",preferredStyle:UIAlertControllerStyleAlert)

  UIAlertAction *ActionOne = [UIAlertAction actionWithTitle:"ActionOne" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { NSLog("ActionOne")
} ]

  UIAlertAction *ActionTwo = [UIAlertAction actionWithTitle:"ActionTwo" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { NSLog("ActionTwo")
} ]
AC.addAction(ActionOne)
AC.addAction(ActionTwo)
self.presentViewController(AC,animated:true,completion:nil)

回答by Avijit Nagare

Try this code. Ex

试试这个代码。前任

 let actionSheetController: UIAlertController = UIAlertController(title: "Are you sure?", message: "", preferredStyle: .Alert)
 let cancelAction: UIAlertAction = UIAlertAction(title: "NO", style: .Cancel) { action -> Void in
                 //Do your task
  }
  actionSheetController.addAction(cancelAction)
  let nextAction: UIAlertAction = UIAlertAction(title: "YES", style: .Default) { action -> Void in
           //Do your task             //NSUserDefaults.standardUserDefaults().removePersistentDomainForName(NSBundle.mainBundle().bundleIdentifier!)
      //                  NSUserDefaults.standardUserDefaults().synchronize()
 }
 actionSheetController.addAction(nextAction)
 self.presentViewController(actionSheetController, animated: true, completion: nil)

回答by Govind Prajapati

This code will help

此代码将有所帮助

let alertController = UIAlertController(title: "Default AlertController", message: "A standard alert", preferredStyle: .Alert)

let cancelAction = UIAlertAction(title: "Cancel", style: .Cancel) 
{ 
   (action:UIAlertAction!) in
   print("you have pressed the Cancel button");
}
alertController.addAction(cancelAction)

let OKAction = UIAlertAction(title: "OK", style: .Default) 
{ 
  (action:UIAlertAction!) in
                print("you have pressed OK button");
}
alertController.addAction(OKAction)

self.presentViewController(alertController, animated: true, completion:nil)

回答by Birendra

I have get this answer from this link i think it is useful to you

我从这个链接中得到了这个答案，我认为它对你有用

How to add an action to a UIAlertView button using Swift iOS

如何使用 Swift iOS 向 UIAlertView 按钮添加操作

    var alertController = UIAlertController(title: "Title", message: "Message", preferredStyle: .Alert)

// Create the actions
var okAction = UIAlertAction(title: "OK", style: UIAlertActionStyle.Default) {
    UIAlertAction in
    NSLog("OK Pressed")
}
var cancelAction = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel) {
    UIAlertAction in
    NSLog("Cancel Pressed")
}

// Add the actions
alertController.addAction(okAction)
alertController.addAction(cancelAction)

// Present the controller
self.presentViewController(alertController, animated: true, completion: nil)