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]; UIApplication *app = [UIApplication sharedApplication]; // 应用程序右上角数字 app.applicationIconBadgeNumber = 0;
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]; } UIApplication *app = [UIApplication sharedApplication]; // 应用程序右上角数字 app.applicationIconBadgeNumber = 0;
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]; } UIApplication *app = [UIApplication sharedApplication]; // 应用程序右上角数字 app.applicationIconBadgeNumber = 0;