Question

我想知道如何设置本地通知，以便在我设置时，我的应用会生成带有自定义消息的通知/提醒...

Answer 1

以下是适用于我的项目的 LocalNotification 的示例代码。

<强>目标-C：

AppDelegate文件中的代码块：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
    {
        [launchOptions valueForKey:UIApplicationLaunchOptionsLocalNotificationKey];
        // Override point for customization after application launch.
        return YES;
    }

    // This code block is invoked when application is in foreground (active-mode) 
 -(void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification {

        UIAlertView *notificationAlert = [[UIAlertView alloc] initWithTitle:@"Notification"    message:@"This local notification" 
        delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil];

        [notificationAlert show];
       // NSLog(@"didReceiveLocalNotification");
    }

任何ViewController的.m文件中的此代码块：

-(IBAction)startLocalNotification {  // Bind this method to UIButton action
    NSLog(@"startLocalNotification");

    UILocalNotification *notification = [[UILocalNotification alloc] init];
    notification.fireDate = [NSDate dateWithTimeIntervalSinceNow:7];
    notification.alertBody = @"This is local notification!";
    notification.timeZone = [NSTimeZone defaultTimeZone];
    notification.soundName = UILocalNotificationDefaultSoundName;
    notification.applicationIconBadgeNumber = 10;

    [[UIApplication sharedApplication] scheduleLocalNotification:notification];    
}

上面的代码在按下按钮的时间间隔为7秒后显示一个AlertView，该按钮绑定startLocalNotification如果应用程序在后台，则显示BadgeNumber为10并显示默认通知。

此代码适用于iOS 7.x及更低版本，但对于 iOS 8，它将在控制台上提示错误：

尝试安排带有提醒的本地通知但未获得用户显示提醒的权限

这意味着您需要注册本地通知。这可以通过以下方式实现：

if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)]){

    [application registerUserNotificationSettings [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];
}

您也可以参考blog进行本地通知。

<强>夫特：

您AppDelegate.swift文件应如下所示：

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {    
    // Override point for customization after application launch.
    application.registerUserNotificationSettings(UIUserNotificationSettings(forTypes: UIUserNotificationType.Sound | UIUserNotificationType.Badge | UIUserNotificationType.Alert, categories: nil))

    return true
}

要在其中创建本地通知的swift文件（例如ViewController.swift）应包含以下代码：

//MARK: - Button functions
func buttonIsPressed(sender: UIButton) {
    println("buttonIsPressed function called \(UIButton.description())")

    var localNotification = UILocalNotification()
    localNotification.fireDate = NSDate(timeIntervalSinceNow: 3)
    localNotification.alertBody = "This is local notification from Swift 2.0"
    localNotification.timeZone = NSTimeZone.localTimeZone()
    localNotification.repeatInterval = NSCalendarUnit.CalendarUnitMinute
    localNotification.userInfo = ["Important":"Data"];
    localNotification.soundName = UILocalNotificationDefaultSoundName
    localNotification.applicationIconBadgeNumber = 5
    localNotification.category = "Message"

    UIApplication.sharedApplication().scheduleLocalNotification(localNotification)
}


//MARK: - viewDidLoad

class ViewController: UIViewController {

    var objButton : UIButton!
    . . .

    override func viewDidLoad() {
        super.viewDidLoad()

        . . .

        objButton = UIButton.buttonWithType(.Custom) as? UIButton
        objButton.frame = CGRectMake(30, 100, 150, 40)
        objButton.setTitle("Click Me", forState: .Normal)
        objButton.setTitle("Button pressed", forState: .Highlighted)

        objButton.addTarget(self, action: "buttonIsPressed:", forControlEvents: .TouchDown)

        . . .
    }

    . . .
}

您在iOS 9及更低版本中使用本地通知的方式在iOS 10中完全不同。

Apple发布说明中的屏幕抓取描述了这一点。

您可以在apple reference document中提及UserNotification。

以下是本地通知的代码：

<强>目标-C：

在App-delegate.h文件中使用@import UserNotifications;
App-delegate应符合UNUserNotificationCenterDelegate协议

在didFinishLaunchingOptions中使用以下代码：

UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
[center requestAuthorizationWithOptions:(UNAuthorizationOptionBadge | UNAuthorizationOptionSound | UNAuthorizationOptionAlert)
       completionHandler:^(BOOL granted, NSError * _Nullable error) {
              if (!error) {
                  NSLog(@"request authorization succeeded!");
                  [self showAlert];
              }
}];

-(void)showAlert {
    UIAlertController *objAlertController = [UIAlertController alertControllerWithTitle:@"Alert" message:@"show an alert!" preferredStyle:UIAlertControllerStyleAlert];

    UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"OK"
      style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
        NSLog(@"Ok clicked!");
    }];

    [objAlertController addAction:cancelAction];


    [[[[[UIApplication sharedApplication] windows] objectAtIndex:0] rootViewController] presentViewController:objAlertController animated:YES completion:^{            
    }];

}

现在在任何视图控制器中创建一个按钮，在IBAction中使用以下代码：

UNMutableNotificationContent *objNotificationContent = [[UNMutableNotificationContent alloc] init];

objNotificationContent.title = [NSString localizedUserNotificationStringForKey:@“Notification!” arguments:nil];

objNotificationContent.body = [NSString localizedUserNotificationStringForKey:@“This is local notification message!“arguments:nil];

objNotificationContent.sound = [UNNotificationSound defaultSound];

// 4. update application icon badge number
objNotificationContent.badge = @([[UIApplication sharedApplication] applicationIconBadgeNumber] + 1);

// Deliver the notification in five seconds.
UNTimeIntervalNotificationTrigger *trigger =  [UNTimeIntervalNotificationTrigger                                             triggerWithTimeInterval:10.f repeats:NO];       

UNNotificationRequest *request = [UNNotificationRequest requestWithIdentifier:@“ten”                                                                            content:objNotificationContent trigger:trigger];

// 3. schedule localNotification
UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];

[center addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) {
    if (!error) {
        NSLog(@“Local Notification succeeded“);
    } else {
        NSLog(@“Local Notification failed“);
    }
}];

斯威夫特3：

在AppDelegate.swift文件中使用import UserNotifications
Appdelegate应符合UNUserNotificationCenterDelegate协议

在didFinishLaunchingWithOptions下面使用代码

// Override point for customization after application launch.
let center = UNUserNotificationCenter.current()
center.requestAuthorization(options: [.alert, .sound]) { (granted, error) in
    // Enable or disable features based on authorization.
    if error != nil {
        print("Request authorization failed!")
    } else {
        print("Request authorization succeeded!")
        self.showAlert()
    }
}


func showAlert() {
    let objAlert = UIAlertController(title: "Alert", message: "Request authorization succeeded", preferredStyle: UIAlertControllerStyle.alert)

    objAlert.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.default, handler: nil))
    //self.presentViewController(objAlert, animated: true, completion: nil)

    UIApplication.shared().keyWindow?.rootViewController?.present(objAlert, animated: true, completion: nil)
}

现在在任何视图控制器中创建一个按钮，在IBAction中使用以下代码：

let content = UNMutableNotificationContent()
content.title = NSString.localizedUserNotificationString(forKey: "Hello!", arguments: nil)
content.body = NSString.localizedUserNotificationString(forKey: "Hello_message_body", arguments: nil)
content.sound = UNNotificationSound.default()
content.categoryIdentifier = "notify-test"

let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: 5, repeats: false)
let request = UNNotificationRequest.init(identifier: "notify-test", content: content, trigger: trigger)

let center = UNUserNotificationCenter.current()
center.add(request)

Answer 2

在appdelegate.m文件中，在applicationDidEnterBackground中编写以下代码以获取本地通知

- (void)applicationDidEnterBackground:(UIApplication *)application
{
   UILocalNotification *notification = [[UILocalNotification alloc]init];
   notification.repeatInterval = NSDayCalendarUnit;
   [notification setAlertBody:@"Hello world"];
   [notification setFireDate:[NSDate dateWithTimeIntervalSinceNow:1]];
   [notification setTimeZone:[NSTimeZone  defaultTimeZone]];
   [application setScheduledLocalNotifications:[NSArray arrayWithObject:notification]];
}

Answer 3

创建本地通知非常简单。只需按照以下步骤操作

在viewDidLoad（）函数中，询问用户是否允许您的应用显示通知。为此，我们可以使用以下代码。

UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge], completionHandler: {didAllow, error in
})

然后您可以创建一个按钮，然后在操作功能中，您可以编写以下代码来显示通知。

//creating the notification content
let content = UNMutableNotificationContent()

//adding title, subtitle, body and badge
content.title = "Hey this is Simplified iOS"
content.subtitle = "iOS Development is fun"
content.body = "We are learning about iOS Local Notification"
content.badge = 1

//getting the notification trigger
//it will be called after 5 seconds
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 5, repeats: false)

//getting the notification request
let request = UNNotificationRequest(identifier: "SimplifiedIOSNotification", content: content, trigger: trigger)

//adding the notification to notification center
UNUserNotificationCenter.current().add(request, withCompletionHandler: nil)

将显示通知，点击通知按钮后点击主页按钮。当应用程序处于前台时，不会显示通知。但是，如果您使用的是iPhone X.即使应用程序位于前台，您也可以显示通知。为此，您只需添加一个名为 UNUserNotificationCenterDelegate

有关详细信息，请访问此博文： iOS Local Notification Tutorial

Answer 4

- (void)applicationDidEnterBackground:(UIApplication *)application
{
   UILocalNotification *notification = [[UILocalNotification alloc]init];
   notification.repeatInterval = NSDayCalendarUnit;
   [notification setAlertBody:@"Hello world"];
   [notification setFireDate:[NSDate dateWithTimeIntervalSinceNow:1]];
   [notification setTimeZone:[NSTimeZone  defaultTimeZone]];
   [application setScheduledLocalNotifications:[NSArray arrayWithObject:notification]];
}

这是有效的，但在iOS 8.0及更高版本中，您的应用程序必须使用-[UIApplication registerUserNotificationSettings:]注册用户通知才能安排和呈现UILocalNotifications，不要忘记这一点。

Answer 5

-(void)kundanselect
{
    NSMutableArray *allControllers = [[NSMutableArray alloc] initWithArray:self.navigationController.viewControllers];
    NSArray *allControllersCopy = [allControllers copy];
    if ([[allControllersCopy lastObject] isKindOfClass: [kundanViewController class]]) 
    {
        [[NSNotificationCenter defaultCenter]postNotificationName:@"kundanViewControllerHide"object:nil userInfo:nil];
    }
    else
    {
        [[NSUserDefaults standardUserDefaults] setInteger:4 forKey:@"selected"];
        [self performSegueWithIdentifier:@"kundansegue" sender:self];
    }
}

<强> [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(ApparelsViewControllerHide) name:@"ApparelsViewControllerHide" object:nil];

Answer 6

iOS 8及以上用户，请将其包含在App委托中以使其正常工作。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)])
    {
        [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];
    }

    return YES;
}

然后添加这行代码会有所帮助，

- (void)applicationDidEnterBackground:(UIApplication *)application
{
    UILocalNotification *notification = [[UILocalNotification alloc]init];
    notification.repeatInterval = NSDayCalendarUnit;
    [notification setAlertBody:@"Hello world"];
    [notification setFireDate:[NSDate dateWithTimeIntervalSinceNow:1]];
    [notification setTimeZone:[NSTimeZone  defaultTimeZone]];
    [application setScheduledLocalNotifications:[NSArray arrayWithObject:notification]];

}

Answer 7

更新为 Swift 5 通常，我们使用三种类型的本地通知

简单的本地通知
带操作的本地通知
带有内容的本地通知

您可以在其中发送简单文本通知或带有操作按钮和附件的地方。

在您的应用中使用UserNotifications包，以下示例请求通知权限，按照用户操作AppDelegate本身准备和发送通知，并使用列出不同类型的本地通知测试的视图控制器。

AppDelegate

import UIKit
import UserNotifications

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate {

    let notificationCenter = UNUserNotificationCenter.current()
    var window: UIWindow?


    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {

        //Confirm Delegete and request for permission
        notificationCenter.delegate = self
        let options: UNAuthorizationOptions = [.alert, .sound, .badge]
        notificationCenter.requestAuthorization(options: options) {
            (didAllow, error) in
            if !didAllow {
                print("User has declined notifications")
            }
        }

        return true
    }

    func applicationWillResignActive(_ application: UIApplication) {
    }
    func applicationDidEnterBackground(_ application: UIApplication) {
    }
    func applicationWillEnterForeground(_ application: UIApplication) {
    }
    func applicationWillTerminate(_ application: UIApplication) {
    }
    func applicationDidBecomeActive(_ application: UIApplication) {
        UIApplication.shared.applicationIconBadgeNumber = 0
    }


    //MARK: Local Notification Methods Starts here

    //Prepare New Notificaion with deatils and trigger
    func scheduleNotification(notificationType: String) {

        //Compose New Notificaion
        let content = UNMutableNotificationContent()
        let categoryIdentifire = "Delete Notification Type"
        content.sound = UNNotificationSound.default
        content.body = "This is example how to send " + notificationType
        content.badge = 1
        content.categoryIdentifier = categoryIdentifire

        //Add attachment for Notification with more content
        if (notificationType == "Local Notification with Content")
        {
            let imageName = "Apple"
            guard let imageURL = Bundle.main.url(forResource: imageName, withExtension: "png") else { return }
            let attachment = try! UNNotificationAttachment(identifier: imageName, url: imageURL, options: .none)
            content.attachments = [attachment]
        }

        let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 5, repeats: false)
        let identifier = "Local Notification"
        let request = UNNotificationRequest(identifier: identifier, content: content, trigger: trigger)

        notificationCenter.add(request) { (error) in
            if let error = error {
                print("Error \(error.localizedDescription)")
            }
        }

        //Add Action button the Notification
        if (notificationType == "Local Notification with Action")
        {
            let snoozeAction = UNNotificationAction(identifier: "Snooze", title: "Snooze", options: [])
            let deleteAction = UNNotificationAction(identifier: "DeleteAction", title: "Delete", options: [.destructive])
            let category = UNNotificationCategory(identifier: categoryIdentifire,
                                                  actions: [snoozeAction, deleteAction],
                                                  intentIdentifiers: [],
                                                  options: [])
            notificationCenter.setNotificationCategories([category])
        }
    }

    //Handle Notification Center Delegate methods
    func userNotificationCenter(_ center: UNUserNotificationCenter,
                                willPresent notification: UNNotification,
                                withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
        completionHandler([.alert, .sound])
    }

    func userNotificationCenter(_ center: UNUserNotificationCenter,
                                didReceive response: UNNotificationResponse,
                                withCompletionHandler completionHandler: @escaping () -> Void) {
        if response.notification.request.identifier == "Local Notification" {
            print("Handling notifications with the Local Notification Identifier")
        }
        completionHandler()
    }
}

和 ViewController

import UIKit

class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {

    var appDelegate = UIApplication.shared.delegate as? AppDelegate
    let notifications = ["Simple Local Notification",
                         "Local Notification with Action",
                         "Local Notification with Content",]

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    // MARK: - Table view data source

     func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return notifications.count
    }

     func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
        cell.textLabel?.text = notifications[indexPath.row]
        return cell
    }

     func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        let notificationType = notifications[indexPath.row]
        let alert = UIAlertController(title: "",
                                      message: "After 5 seconds " + notificationType + " will appear",
                                      preferredStyle: .alert)
        let okAction = UIAlertAction(title: "Okay, I will wait", style: .default) { (action) in
            self.appDelegate?.scheduleNotification(notificationType: notificationType)
        }
        alert.addAction(okAction)
        present(alert, animated: true, completion: nil)
    }
}

Answer 8

我假设您已请求授权并注册了应用程序以进行通知。

这是创建本地通知的代码

@available(iOS 10.0, *)
    func send_Noti()
    {
        //Create content for your notification 
        let content = UNMutableNotificationContent()
        content.title = "Test"
        content.body = "This is to test triggering of notification"

        //Use it to define trigger condition
        var date = DateComponents()
        date.calendar = Calendar.current
        date.weekday = 5 //5 means Friday
        date.hour = 14 //Hour of the day
        date.minute = 10 //Minute at which it should be sent


        let trigger = UNCalendarNotificationTrigger(dateMatching: date, repeats: true)
        let uuid = UUID().uuidString
        let req = UNNotificationRequest(identifier: uuid, content: content, trigger: trigger)

        let notificationCenter = UNUserNotificationCenter.current()
        notificationCenter.add(req) { (error) in
            print(error)
        }
    }

如何在iOS中创建本地通知？

8 个答案: