ios8本地通知

使用本地通知需要进行版本判断，大于8.0版本，使用本地通知时需要先注册通知，

if ([[UIDevice currentDevice].systemVersion floatValue]>8.0) {
        if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)]) {
            [[UIApplication sharedApplication]registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];
        }
    }

基中：

// Registering UIUserNotificationSettings more than once results in previous settings being overwritten.
- (void)registerUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings NS_AVAILABLE_IOS(8_0);