registerForRemoteNotificationTypes：在iOS 8.0及更高版本中不受支持
在iOS 8.x下尝试注册推送通知时：
application.registerForRemoteNotificationTypes(UIRemoteNotificationType.Alert | UIRemoteNotificationType.Badge | UIRemoteNotificationType.Sound) 我得到以下错误：
registerForRemoteNotificationTypes: is not supported in iOS 8.0 and later.
任何想法是什么新的做法呢？ 当我在iOS 7.x上运行这个Swift应用程序时，它确实有效。
编辑
在iOS 7.x中，当我包含条件代码时，我得到（SystemVersion conditional或#if __IPHONE_OS_VERSION_MAX_ALLOWED> = 80000）
dyld: Symbol not found: _OBJC_CLASS_$_UIUserNotificationSettings
正如你所描述的，你将需要使用基于不同版本的iOS的不同方法。 如果您的团队同时使用Xcode 5（不知道任何iOS 8select器）和Xcode 6（目前处于testing版），那么您将需要使用条件编译，如下所示：
#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 80000 if ([application respondsToSelector:@selector(registerUserNotificationSettings:)]) { // use registerUserNotificationSettings } else { // use registerForRemoteNotificationTypes: } #else // use registerForRemoteNotificationTypes: #endif
如果你只使用Xcode 6（beta），你可以坚持这样做：
if ([application respondsToSelector:@selector(registerUserNotificationSettings:)]) { // use registerUserNotificationSettings } else { // use registerForRemoteNotificationTypes: }
原因是在iOS 8中，获取通知权限的方式发生了变化UserNotification是向用户显示的消息，无论是从远程还是从本地。 您需要获得许可才能显示一个。 这在WWDC 2014video“iOS新增function”
对于iOS <10
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary*)launchOptions { //-- Set Notification if ([application respondsToSelector:@selector(isRegisteredForRemoteNotifications)]) { // iOS 8 Notifications [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]]; [application registerForRemoteNotifications]; } else { // iOS < 8 Notifications [application registerForRemoteNotificationTypes: (UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound)]; } //--- your custom code return YES; }
对于iOS10
build立在@ Prasath的答案。 这就是你在Swift中的做法：
if application.respondsToSelector("isRegisteredForRemoteNotifications") { // iOS 8 Notifications application.registerUserNotificationSettings(UIUserNotificationSettings(forTypes: (.Badge | .Sound | .Alert), categories: nil)); application.registerForRemoteNotifications() } else { // iOS < 8 Notifications application.registerForRemoteNotificationTypes(.Badge | .Sound | .Alert) }
iOS 8已经以非向后兼容的方式改变了通知注册。 虽然您需要支持iOS 7和8（以及使用8 SDK构build的应用程序不被接受），但您可以检查所需的select器，并有条件地为正在运行的版本调用它们。
这里有一个关于UIApplication的类，它将把这个逻辑隐藏在一个可以在Xcode 5和Xcode 6中工作的干净的界面之后。
标题：
//Call these from your application code for both iOS 7 and 8 //put this in the public header @interface UIApplication (RemoteNotifications) - (BOOL)pushNotificationsEnabled; - (void)registerForPushNotifications; @end
执行：
//these declarations are to quiet the compiler when using 7.x SDK //put this interface in the implementation file of this category, so they are //not visible to any other code. @interface NSObject (IOS8) - (BOOL)isRegisteredForRemoteNotifications; - (void)registerForRemoteNotifications; + (id)settingsForTypes:(NSUInteger)types categories:(NSSet*)categories; - (void)registerUserNotificationSettings:(id)settings; @end @implementation UIApplication (RemoteNotifications) - (BOOL)pushNotificationsEnabled { if ([self respondsToSelector:@selector(isRegisteredForRemoteNotifications)]) { return [self isRegisteredForRemoteNotifications]; } else { return ([self enabledRemoteNotificationTypes] & UIRemoteNotificationTypeAlert); } } - (void)registerForPushNotifications { if ([self respondsToSelector:@selector(registerForRemoteNotifications)]) { [self registerForRemoteNotifications]; Class uiUserNotificationSettings = NSClassFromString(@"UIUserNotificationSettings"); //If you want to add other capabilities than just banner alerts, you'll need to grab their declarations from the iOS 8 SDK and define them in the same way. NSUInteger UIUserNotificationTypeAlert = 1 << 2; id settings = [uiUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert categories:[NSSet set]]; [self registerUserNotificationSettings:settings]; } else { [self registerForRemoteNotificationTypes:UIRemoteNotificationTypeAlert]; } } @end
对于Swift倾斜的：
if let registration: AnyObject = NSClassFromString("UIUserNotificationSettings") { // iOS 8+ let notificationTypes: UIUserNotificationType = (.Alert | .Badge | .Sound) let notificationSettings: UIUserNotificationSettings = UIUserNotificationSettings(forTypes: notificationTypes, categories: nil) application.registerUserNotificationSettings(notificationSettings) } else { // iOS 7 application.registerForRemoteNotificationTypes(.Alert | .Badge | .Sound) }
我认为这是保持向后兼容性的更好方法，如果我们采用这种方法，它正在为我的案件工作，希望将为你工作。 也很容易理解。
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0) { [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]]; [[UIApplication sharedApplication] registerForRemoteNotifications]; } else { [[UIApplication sharedApplication] registerForRemoteNotificationTypes: (UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert)]; }
我无法弄清楚“NSSetvariables”应该设置为“什么类别”，所以如果有人能够填补我的话，我会很乐意编辑这篇文章。 但是，下面会显示推送通知对话框。
[[UIApplication sharedApplication] registerForRemoteNotifications]; UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert) categories:nil]; [[UIApplication sharedApplication] registerUserNotificationSettings:settings];
编辑：我有一个推送通知发送到我的手机与此代码，所以我不知道类别参数是必要的。
所以事实certificate，因为AnyObject是id的精神inheritance者，所以你可以在AnyObject上调用你想要的任何消息。 这相当于向ID发送消息。 好，可以。 但是现在我们添加一个概念，即AnyObject上的所有方法都是可选的 ，我们可以使用一些东西。
鉴于上述情况，我希望我可以将UIApplication.sharedApplication（）投射到AnyObject，然后创build一个等于方法签名的variables，将该variables设置为可选方法，然后testing该variables。 这似乎没有工作。 我的猜测是，当针对iOS 8.0 SDK进行编译时，编译器知道它认为该方法应该在哪里，所以它优化了所有的内存查找。 一切工作正常，直到我尝试testingvariables，在这一点上，我得到一个EXC_BAD_ACCESS。
然而，在同一个WWDC对话中，我发现关于所有方法的gem是可选的，他们使用可选链来调用一个可选的方法 – 这似乎工作。 跛脚的部分是，你必须真正尝试调用该方法，以便知道它是否存在，在注册通知的情况下，这是一个问题，因为你正在试图找出这个方法是否存在之前，你去创buildUIUserNotificationSettings对象。 似乎用nil调用这个方法虽然没关系，所以似乎对我有用的解决scheme是：
var ao: AnyObject = UIApplication.sharedApplication() if let x:Void = ao.registerUserNotificationSettings?(nil) { // It's iOS 8 var types = UIUserNotificationType.Badge | UIUserNotificationType.Sound | UIUserNotificationType.Alert var settings = UIUserNotificationSettings(forTypes: types, categories: nil) UIApplication.sharedApplication().registerUserNotificationSettings(settings) } else { // It's older var types = UIRemoteNotificationType.Badge | UIRemoteNotificationType.Sound | UIRemoteNotificationType.Alert UIApplication.sharedApplication().registerForRemoteNotificationTypes(types) }
在与此有关的许多search之后，关键信息来自于这个WWDC讨论https://developer.apple.com/videos/wwdc/2014/#407正确的中间部分关于“可选方法在协议中”;
在Xcode 6.1testing版中，上面的代码不再工作，下面的代码工作：
if UIApplication.sharedApplication().respondsToSelector("registerUserNotificationSettings:") { // It's iOS 8 var types = UIUserNotificationType.Badge | UIUserNotificationType.Sound | UIUserNotificationType.Alert var settings = UIUserNotificationSettings(forTypes: types, categories: nil) UIApplication.sharedApplication().registerUserNotificationSettings(settings) } else { // It's older var types = UIRemoteNotificationType.Badge | UIRemoteNotificationType.Sound | UIRemoteNotificationType.Alert UIApplication.sharedApplication().registerForRemoteNotificationTypes(types) }
如果你想添加对IOS7 IOS8的支持，你可以将这个代码应用到你的项目中。
-(void) Subscribe { NSLog(@"Registering for push notifications..."); if ([[UIApplication sharedApplication] respondsToSelector:@selector(registerUserNotificationSettings:)]) { UIUserNotificationSettings* notificationSettings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert | UIUserNotificationTypeBadge | UIUserNotificationTypeSound categories:nil]; [[UIApplication sharedApplication] registerUserNotificationSettings:notificationSettings]; [[UIApplication sharedApplication] registerForRemoteNotifications]; } else { [[UIApplication sharedApplication] registerForRemoteNotificationTypes: (UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)]; } } -(void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings { if (notificationSettings.types) { NSLog(@"user allowed notifications"); [[UIApplication sharedApplication] registerForRemoteNotifications]; } else { NSLog(@"user did not allow notifications"); UIAlertView *alert =[[UIAlertView alloc] initWithTitle:@"Please turn on Notification" message:@"Go to Settings > Notifications > App.\n Switch on Sound, Badge & Alert" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles: nil]; [alert show]; // show alert here } }
在Xcode 6.1 Beta之后，下面的代码工作，稍微编辑了一下Tom S代码，它停止了6.1 beta（与以前的testing版一起工作）：
if UIApplication.sharedApplication().respondsToSelector("registerUserNotificationSettings:") { // It's iOS 8 var types = UIUserNotificationType.Badge | UIUserNotificationType.Sound | UIUserNotificationType.Alert var settings = UIUserNotificationSettings(forTypes: types, categories: nil) UIApplication.sharedApplication().registerUserNotificationSettings(settings) } else { // It's older var types = UIRemoteNotificationType.Badge | UIRemoteNotificationType.Sound | UIRemoteNotificationType.Alert UIApplication.sharedApplication().registerForRemoteNotificationTypes(types) }
你可以使用这个
if ([application respondsToSelector:@selector(isRegisteredForRemoteNotifications)]) { // for iOS 8 [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]]; [application registerForRemoteNotifications]; } else { // for iOS < 8 [application registerForRemoteNotificationTypes: (UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound)]; } // RESET THE BADGE COUNT application.applicationIconBadgeNumber = 0;
Swift 2.0
// Checking if app is running iOS 8 if application.respondsToSelector("isRegisteredForRemoteNotifications") { print("registerApplicationForPushNotifications - iOS 8") application.registerUserNotificationSettings(UIUserNotificationSettings(forTypes: [.Alert, .Badge, .Sound], categories: nil)); application.registerForRemoteNotifications() } else { // Register for Push Notifications before iOS 8 print("registerApplicationForPushNotifications - <iOS 8") application.registerForRemoteNotificationTypes([UIRemoteNotificationType.Alert, UIRemoteNotificationType.Badge, UIRemoteNotificationType.Sound]) }
如果你需要的只是ios 8的代码，这应该做到这一点。
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary*)launchOptions { [application registerUserNotificationSettings: [UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]]; [application registerForRemoteNotifications]; } return YES; }
这是更干净的方式，我做的很好
if (floor(NSFoundationVersionNumber) < NSFoundationVersionNumber_iOS_8_0) [[UIApplication sharedApplication] registerForRemoteNotificationTypes:UIRemoteNotificationTypeBadge| UIRemoteNotificationTypeAlert| UIRemoteNotificationTypeSound]; else { [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]]; [application registerForRemoteNotifications]; }
对于iOS 8及以上版本
UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeBadge|UIUserNotificationTypeSound|UIUserNotificationTypeAlert) categories:nil]; [application registerUserNotificationSettings:settings];
