iOS 10请求通知权限触发两次

Question

当我在iOS 10上启动我的应用程序时，我得到请求通知权限两次。 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，其正常行为等待“允许”或“拒绝”来自用户。

这是我的代码，在iOS 10之前运行良好。

在该方法中didFinishLaunchingWithOptions从的AppDelegate：

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]; 
} 

我应该执行，以解决这一双重要求允许一些适用于iOS 10？

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框架和的appdelegate

添加UNUserNotificationCenterDelegate AppDelegate.h

#import <UIKit/UIKit.h> 
#import <UserNotifications/UserNotifications.h> 

@interface AppDelegate : UIResponder <UIApplicationDelegate,UNUserNotificationCenterDelegate> 

@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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