To utilize the post adapter, we need to create an xml file named post_item.xml, and here we will implement the UI. Here is a piece of the code (the entire code can be found on GitHub):

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        <TextView android:layout_width="wrap_content" android:layout_height="wrap_content"
                  tools:text="@tools:sample/date/ddmmyy"
                  android:id="@+id/postedDate"
                  android:textAppearance="?android:textAppearanceSmall"
                  app:layout_constraintTop_toBottomOf="@+id/profileName"
                  app:layout_constraintStart_toStartOf="@+id/profileName"
                  android:layout_marginTop="4dp"
                  app:layout_constraintBottom_toBottomOf="parent" android:layout_marginBottom="4dp"/>
    </android.support.constraint.ConstraintLayout>

    <TextView android:layout_width="0dp" android:layout_height="wrap_content"
              tools:text="@tools:sample/lorem"
              android:id="@+id/postText"
              android:padding="4dp"
              android:textAppearance="?android:textAppearanceSmall"
              app:layout_constraintStart_toStartOf="parent"
              app:layout_constraintEnd_toEndOf="parent" android:layout_marginTop="4dp"
              app:layout_constraintTop_toBottomOf="@+id/constraintLayout"/>
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We have four TextView for user full name, username, posted time, and the post text. 

Here is a sample image from the preview option of the layout: