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以前帖子的附加信息(完整版registerUserNotificationSettings):

Apple为注册通知和使用徽章制作了新的API.

请参阅WWDC 2014会话视频,文本版本

和文档.

用户可以更改每个权限UIUserNotificationType(UIUserNotificationTypeBadge,UIUserNotificationTypeSound,UIUserNotificationTypeAlert中设置).

在更改徽章之前,您必须检查权限.

来自AppDelegate的代码示例:

#ifdef __IPHONE_8_0

- (BOOL)checkNotificationType:(UIUserNotificationType)type

{

UIUserNotificationSettings *currentSettings = [[UIApplication sharedApplication] currentUserNotificationSettings];

return (currentSettings.types & type);

}

#endif

- (void)setApplicationBadgeNumber:(NSInteger)badgeNumber

{

UIApplication *application = [UIApplication sharedApplication];

#ifdef __IPHONE_8_0

// compile with Xcode 6 or higher (iOS SDK >= 8.0)

if(SYSTEM_VERSION_LESS_THAN(@"8.0"))

{

application.applicationIconBadgeNumber = badgeNumber;

}

else

{

if ([self checkNotificationType:UIUserNotificationTypeBadge])

{

NSLog(@"badge number changed to %d", badgeNumber);

application.applicationIconBadgeNumber = badgeNumber;

}

else

NSLog(@"access denied for UIUserNotificationTypeBadge");

}

#else

// compile with Xcode 5 (iOS SDK < 8.0)

application.applicationIconBadgeNumber = badgeNumber;

#endif

}

#define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)

该CurrentUserNotificationSettings方法在UI应用程序实例中可用,并将为您提供最新的用户通知首选项.

使用徽章编号:

[self setApplicationBadgeNumber:0];

代替

application.applicationIconBadgeNumber = 0;

PS:#ifdef __IPHONE_8_0由于需要构建Xcode5和Xcode6,检查compiling().如果您没有这个需求,可以简化代码.