ios - 实现从 iOS7 到 iOS 11 的推送通知。* 我必须处理所有三种情况吗？

Question

我知道这听起来有些笨拙，但我已经习惯于为 APNs 集成第三方 SDK。

我有一个必须支持 iOS 7 及更高版本的旧版应用程序，该应用程序具有推送通知。据我了解，对于低于 iOS8、低于 iOS10 和不同的 iOS 10 及更高版本，我们有不同的方法来注册推送通知。所以我需要使用 if 条件检查操作系统版本吗

   if(ios10 and above){
    // here register for iOS 10 and above

  }else if ([application respondsToSelector:@selector(isRegisteredForRemoteNotifications)]) {
    // iOS 8 Notifications
    [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]];

    [application registerForRemoteNotifications];
}
else {
    // iOS < 8 Notifications
    [application registerForRemoteNotificationTypes:
     (UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound)];
}

上面的做法是对的还是我错了？

Answer 1

这是我使用的代码片段，供您引用:)

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+ (void)registerAPNS {
  if ([UIDevice currentDevice].systemVersion.floatValue >= 10.0f) {
    UNUserNotificationCenter* center = [UNUserNotificationCenter currentNotificationCenter];
    [center requestAuthorizationWithOptions:(UNAuthorizationOptionAlert + UNAuthorizationOptionSound)
                          completionHandler:^(BOOL granted, NSError * _Nullable error) {
                          }];
    [[UIApplication sharedApplication] registerForRemoteNotifications];
  } else if ([UIDevice currentDevice].systemVersion.floatValue >= 8.0f) {
    UIUserNotificationSettings *notificationSettings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge|UIUserNotificationTypeSound|UIUserNotificationTypeAlert categories:nil];
    [[UIApplication sharedApplication] registerUserNotificationSettings:notificationSettings];
    [[UIApplication sharedApplication] registerForRemoteNotifications];
  } else {
    [[UIApplication sharedApplication] registerForRemoteNotificationTypes:UIRemoteNotificationTypeBadge|UIRemoteNotificationTypeSound|UIRemoteNotificationTypeAlert];
  }
}
#pragma clang diagnostic pop