Dont visualization

[gohancrafting]

Hi, im trying to learn the use of the tree for personalize json. To iniciate in this world, the first thing im trying to do is a eassy tree, i follow all the steps but it didnt works. There is no error and nothing strange that i can see, but when i run the app, nothing appears in the screen. The main code: the view holder(the log never show up) and the xml(the item, and the main) :

[AmrDeveloper]

Hello @gohancrafting,

For testing can you replace ConstraintLayout in item and the main with for example LinearLayout and try to set different background color for main, recycler, item so we can see which view has the problem, also try to add logs with same tag to check if view holder see them so we can identify the main problem and solve it

[finedayjun]

Hello @gohancrafting

Try it with the code below

<androidx.recyclerview.widget.RecyclerView android:id="@+id/recycler_view" android:layout_width="match_parent" android:layout_height="wrap_content" app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"/>

[exportdeveloper]

app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager" problem sloved for me thanks @finedayjun