In the previous tutorial, we created our data class for a User. We can now use that Model to create a lot of users. In this example, we use a for loop to create 101 users. (Remember, counting starts at zero.) This Int can be any number, though. Let’s create our sample data.
If you run the app, you will see that the RecyclerView works! You can scroll up and down the list of users. If you scroll up and down, you will notice that there is a large gap between each row.
To fix that, we need to open row_user.xml and set the parent’s layout_height to wrap_content.
Run the app again and you should see a long list of Welcome Daniel Malone!
Let’s remove the “Welcome, Daniel Malone” text and show only the first name. Modify the row_user.xml file to add an id of firstName. Also, we change the android:text to tools:text, then import the tools by clicking on tools and pressing Alt+Enter on Windows (or Option+Enter on Mac). With these two modifications, we have the following file.
With our android:id set, let’s create a connection between the row_user.xml layout file and the UsersAdapter class. With UsersAdapter.kt open, make the following modifications.
Inside of onBindViewHolder, add the following line of code. This line gets the users variable passed in from MainActivity.
Run the app again, and we will see “Daniel” written on the screen 101 times.
If we want to confirm that each row is a individual, unique record, open MainActivity and add the i variable to the firstName by using $i.
We now have a working RecyclerView! In the next part of this series, we’ll style each row.
