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  • IOS开发—IOS 8 中设置applicationIconBadgeNumber和消息推送

    摘要

    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];
    }

    感谢分享
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  • 原文地址:https://www.cnblogs.com/isItOk/p/5791593.html
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