IOS8 设置APP右上角图标通知数字的必须要做的事

IOS8:

iOS8中设置application badge value 会抛错：Attempting to badge the application icon but haven’t received permission from the user to badge the

原因是因为在ios8中，设置应用的application badge value需要得到用户的许可。使用如下方法咨询用户是否许可应用设置application badge value

UIUserNotificationSettings *settings =[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge categories:nil];

[[UIApplication sharedApplication] registerUserNotificationSettings:settings];