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‫-: Hi.

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‫Within this lecture

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‫we are going to complete our Firebased integration

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‫by adding the specified dependencies in our documentation.

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‫So, over here it says that you have to add these SDKs

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‫for desired Firebased products.

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‫And it gives us a webpage over here, actually.

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‫So, I'm going to open this web page.

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‫So, if you don't see this, then don't worry.

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‫I'm going to show you exactly what to write over here.

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‫But just for reference,

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‫I'm going to open this

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‫and show it to you.

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‫So, why are we doing this?

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‫Why are we adding some different libraries?

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‫Why doesn't it come all together?

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‫So, as you can see,

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‫Firebase has a lot of modules.

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‫Like, it has its own advertisement module.

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‫It has its own cloud messaging,

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‫like storage, and database, AdMob, analytics.

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‫Remember, we didn't even enable analytics in our app.

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‫So, these are all for different reasons,

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‫different purposes.

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‫So, if you're using everything related

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‫to Firebase in your application,

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‫of course, you're gonna have to add them all together.

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‫But, if you're not going to use,

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‫then why do you want to edit, right?

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‫Because it will make your project bigger,

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‫it will make your project slower,

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‫if you add everything, all together.

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‫So, rather than this,

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‫Firebase actually separated every module

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‫into its own dependency,

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‫and it advises to download

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‫what you really need in your project.

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‫So, this is exactly what we are going to do

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‫in this lecture.

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‫So, we are not going to use analytics,

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‫for example,

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‫we are not going to use cloud storage.

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‫So, cloud storage is

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‫for storing pictures or videos,

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‫like media, in your app.

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‫So, we are not going to need it, okay?

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‫We are building a Twitter app.

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‫We are only going to share strings like data,

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‫and we can save all them to database.

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‫And that's what we are going to do.

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‫We are going to bring in Firestore,

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‫which is a database.

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‫And, for example,

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‫we are going to use authentication modules,

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‫because remember,

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‫we had some username

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‫and password login page.

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‫So, we are going to bring in this,

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‫but we are not going to

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‫bring in cloud messaging,

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‫or other dynamic links, or in-app messaging,

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‫like machine learning kit and stuff.

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‫So, we are going to take what we need.

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‫And in order to do that,

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‫I suggest you come to my GitHub page.

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‫Of course,

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‫you can copy and paste it

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‫from that documentation, as well,

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‫but it might be a little bit confusing,

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‫if you're not an experienced developer.

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‫So, rather, I'm going to go over my build.gradle,

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‫under app folder,

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‫and find the dependencies.

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‫Okay.

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‫This is my GitHub page,

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‫as you can see,

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‫and I'm going to copy and paste

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‫this Firebase,

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‫and actually, this recycler view of dependency, as well.

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‫So, I'm going to copy it and paste

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‫it on my project.

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‫So, maybe you don't know what a recycler is.

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‫I'm going to show you later on.

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‫It's a view,

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‫that we are going to use in our app.

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‫We're going to use it to display

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‫the tweets that we gather

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‫from the Firebase server.

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‫So, make sure you copy all of this, okay?

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‫And beware that the versions might change.

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‫It changes like every month

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‫so, it will be a little bit different for you.

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‫I'm going to show you what you need to do exactly,

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‫so, don't worry.

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‫I'm writing this under dependencies,

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‫between two curly braces,

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‫not somewhere else.

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‫And after I paste it,

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‫I'm going to hit the sync now button.

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‫So, if you're using a version,

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‫and if there is a newer version,

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‫it will give you an update.

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‫It will highlight it.

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‫So, I'm going to show you how it looks actually.

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‫So, if you give an error,

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‫if you take an error, like that,

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‫then you're gonna have to change it

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‫to the latest version.

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‫So right now, as you can see,

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‫I don't get any error,

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‫but I will show you an error instance

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‫that we get in the build.gradle project level.

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‫I actually notice that error before,

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‫but in order to show you,

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‫in a better situation, I didn't touch it.

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‫Now, if you come over here,

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‫you will see that there is a newer version like this.

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‫So it says that yeah,

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‫there is a 4.3.2, and yeah,

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‫it's a 4.3.3 and you're using 4.3.2.

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‫So I, if I change it, and if I hit sync now,

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‫it'll be synchronized to the latest version,

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‫and you are going to have to do

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‫the exact same thing over here.

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‫Okay?

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‫So make sure you control the latest version

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‫for this auth Firestore,

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‫and recycler view,

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‫and change them to the latest version.

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‫And if you get an error,

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‫you're more than welcome

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‫to use these versions,

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‫like 19.1.0 and 21.3.0.

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‫But it's always a good idea

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‫to work with latest version.

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‫Okay?

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‫So after you're done,

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‫you can just close this down.

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‫And now we synchronize everything,

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‫and our app is actually connected with Firebase.

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‫Okay?

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‫So right now, if you run this on emulator,

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‫if you don't get any errors,

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‫it means that you successfully integrated

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‫Firebase into your own app.

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‫And of course,

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‫we don't even have any code right now.

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‫And what you are seeing right now,

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‫is the older version that I have created,

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‫in order to demonstrate how it works to you.

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‫Okay?

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‫It will just go and bring in the new version

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‫right now,

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‫and we will see Hello World text,

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‫because we haven't touched it yet.

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‫And as you can see, we don't get any errors.

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‫It means that everything is successful.

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‫So far, so good.

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‫Now, we are going to stop here,

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‫and within the next lecture we are going to

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‫start building our app,

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‫looking at my GitHub project.