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Welcome back and this video, we are going to see how we can lock in the user automatically and send

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him directly to the main activity instead of showing him the login screen once again.

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And that is going to be based on whether there is a user ID for the current user.

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So Firebase takes care of that automatically.

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That's the power here.

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We don't need to do that ourselves.

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So we don't need you to download a token and then the token somewhere and all of those kind of things.

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But the token is generated in the backend.

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So it's generated on the firebase side.

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So we don't need to do that sort of powers here.

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Or what makes it easier for us is that we can just check if there is an instance for the current user

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and then we can either get the user ID or we will just return an empty string and we can then use that

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in order to either log in the user directly and send him directly to the main activity.

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Or we can just send him to the login activity or the intro activity that we have here where he can then

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decide to either register or log in.

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OK, so let's go ahead and build the code for that.

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So first of all, what I'm going to do is I'm going to pretty much copy this code here.

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And store it in a variable, which I'm going to call current user, which will be Firebase get instant's

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current user, so we will use that in order to then check if the current user is null or not, because

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this can return null.

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And if it does return now, it means that there is no current user.

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All right.

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So let's go ahead and create a helper variable, which will then be the one that we will return.

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So I will show you what I mean in a second.

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So this will check if the current user is not null, because if that's the case, then go ahead and

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assign.

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The current user I.D., the value of the current user thought you ID, so you maybe remember how we

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used you ID here just a second ago and we had to force it, as you can see, so we had to force it with

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the double exclamation mark.

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But now we don't need to do that because we check if it's empty or not.

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So this time we just get the current user and if the current user is empty, then we will return an

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empty string.

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So we would just say, well, actually, we don't even need to do that because it's going to be empty

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anyways.

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Right.

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So now we can go ahead and return whatever current user ideas, because at that point it's either going

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to be an empty string or it's going to be the unique user ID, which we then, of course, can use in

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order to download the right information about the user, such as the boards that he has, the tasks

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that are assigned to him, and all of the user information that we have about him.

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Now, of course, where we want to do the sending over, so the.

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Activity intent is in our interest to you.

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So here is where we want to send the user either to the intro activity or to our main activity and then

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the main activity in the end, we want to have all of the different boards and everything.

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All right.

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So here what we have is the splash activity.

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So we don't want to go to the intro.

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We want to go to splash here.

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We had this little handle, right.

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And we postulate started an activity and sent the user to the intro activity.

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But now what we're going to do is we are going to.

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Check if the current user I.D., so here, current user ID, I'm going to give it the same name and

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here we take the first class and get the current user I.D..

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So this will either be an empty string or it will be the user ID.

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So the Joujou ID that is stored in the backpack and.

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So this number here.

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All right, so here we can then check if current user I.D. is not empty, all right?

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Because if it's not empty, we know that we have a user that is locked in.

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So what we can do is we can send them directly to the main activity in which we then will display,

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for example, the.

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Right.

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And then if we don't have a user ID, so if it's empty, then we want to send them to the interactivity

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where he can then choose to either register or log in or sign it.

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OK, so that is pretty much it.

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That's our splash activity.

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Now it will take care of everything.

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It will send us over to the right activity within two point five seconds.

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So now let's test it and see if our application will directly send us to this activity instead of sending

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us to the login activity or the interactivity.

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All right.

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So there we are approaching Menasche and we were sent directly to the main activity.

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All right.

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So this means that we are still logged in.

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And, of course, we would need a log out button to allow the user to log out.

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But we will add all of those features later on.

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OK, so that was it for this video.

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See you in the next one.