从应用程序注销后如何退订FCM通知? [英] How to unsubscribe from FCM notifications after logout from app?

问题描述

我已经在我的应用程序中实现了Firebase云消息传递以用于推送通知.一切正常.但是通知甚至使用户从应用程序注销.

I have implemented Firebase cloud messaging in my app for push notifications. Everything working fine. But notifications are getting even user logged out from app.

我听说，当用户从应用程序注销时，我需要删除FCM令牌.

I heard that, I need to delete the FCM token when user logged out from app.

所以我在注销方法中是这样的:

So I did like this in logout method:

-(void)logout{
        [[FIRInstanceID instanceID] deleteIDWithHandler:^(NSError *error){
            NSLog(@"%@",error);
        }];
}

但这不起作用，下一次当用户登录[[FIRInstanceID instanceID]token]时，其登录名将为null.

But this is not working and next time when user logged in [[FIRInstanceID instanceID]token] is coming as null.

该怎么做?

推荐答案

您可以删除令牌，但最好取消订阅.如何做到这一点，首先取决于您如何订阅更新.

You can delete the token, but it's better to simply cancel the subscription. How to do that, depends on how you subscribed to the updates in the first place.

如果您订阅了主题，您需要取消订阅当用户退出时.

If you subscribed to a topic, you'll want unsubscribe when the user signs out.

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