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iOS-解决iOS8及以上设置applicationIconBadgeNumber报错的问题

 

在IOS7中设置applicationIconBadgeNumber不会有什么问题,但是直接在IOS8中设置applicationIconBadgeNumber会报错。因为在IOS8中要想设置applicationIconBadgeNumber,需要用户的授权,在IOS8中,需要加上下面的代码:

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

但是这两句如果是在IOS7的系统中运行的话就会报错,所以需要先判断IOS的版本,完整代码如下:

float version = [[[UIDevice currentDevice] systemVersion] floatValue];
    
if (version >= 8.0) {
    UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge categories:nil];
    [[UIApplication sharedApplication] registerUserNotificationSettings:settings];
}

如果是注册消息推送的话,需要这样写:

float version = [[[UIDevice currentDevice] systemVersion] floatValue];

if (version >= 8.0) {
    UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge categories:nil];
    [[UIApplication sharedApplication] registerUserNotificationSettings:settings];
    [application registerForRemoteNotifications];
}

 

iOS-解决iOS8及以上设置applicationIconBadgeNumber报错的问题