iOS 10请求通知权限会触发两次

当我在iOS 10上启动我的应用程序时，我获得了两次请求通知权限 。 第一个短暂出现并立即消失而不允许我做任何动作，然后我得到第二个弹出窗口，其中有一个正常的行为，等待用户“允许”或“拒绝” 。

这是我的代码在iOS 10之前运行良好。

在AppDelegate的方法didFinishLaunchingWithOptions中 ：

if ([application respondsToSelector:@selector(registerUserNotificationSettings:)]) { #ifdef __IPHONE_8_0 UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:(UIRemoteNotificationTypeBadge |UIRemoteNotificationTypeSound |UIRemoteNotificationTypeAlert) categories:nil]; [application registerUserNotificationSettings:settings]; #endif } else { UIRemoteNotificationType myTypes = UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound; [application registerForRemoteNotificationTypes:myTypes]; } 

我应该为iOS 10实现一些东西来修复这个双重请求权限吗？

Answer 1

对于iOS 10，我们需要在appDelegate didFinishLaunchingWithOptions方法中调用UNUserNotificationCenter。

首先，我们必须导入UserNotifications框架并在Appdelegate中添加UNUserNotificationCenterDelegate

AppDelegate.h

 #import  #import  @interface AppDelegate : UIResponder  @property (strong, nonatomic) UIWindow *window; @end 

AppDelegate.m

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { if([[[UIDevice currentDevice]systemVersion]floatValue]<10.0) { [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]]; [[UIApplication sharedApplication] registerForRemoteNotifications]; } else { UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter]; center.delegate = self; [center requestAuthorizationWithOptions:(UNAuthorizationOptionSound | UNAuthorizationOptionAlert | UNAuthorizationOptionBadge) completionHandler:^(BOOL granted, NSError * _Nullable error) { if( !error ) { [[UIApplication sharedApplication] registerForRemoteNotifications]; NSLog( @"Push registration success." ); } else { NSLog( @"Push registration FAILED" ); NSLog( @"ERROR: %@ - %@", error.localizedFailureReason, error.localizedDescription ); NSLog( @"SUGGESTIONS: %@ - %@", error.localizedRecoveryOptions, error.localizedRecoverySuggestion ); } }]; } return YES; } 

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