Delay and huge lag during switching-scrolling items in ViewPager2 if you try to create big views that fill a big percentage of the screen (neumorphic cardviews,buttons etc. probably in recyclerviews as well)

[Mon5ta]

MainActivity ViewPager2 layout

<?xml version="1.0" encoding="utf-8"?>

<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".App">

    <androidx.viewpager2.widget.ViewPager2
        android:id="@+id/ViewPager2"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">
    </androidx.viewpager2.widget.ViewPager2>

</androidx.constraintlayout.widget.ConstraintLayout>

item_viewpager2

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/itemLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/light_background">

    <soup.neumorphism.NeumorphCardView
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintBottom_toTopOf="@+id/small"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">
    </soup.neumorphism.NeumorphCardView>

    <soup.neumorphism.NeumorphCardView
        android:id="@+id/small"
        android:layout_width="0dp"
        android:layout_height="50dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent">
    </soup.neumorphism.NeumorphCardView>


</androidx.constraintlayout.widget.ConstraintLayout>

adapter

public class ViewPager2Adapter extends RecyclerView.Adapter<ViewPager2Adapter.ViewHolder> {
    private final List<String> list;

    public ViewPager2Adapter(List<String> list) {
        this.list = list;
    }

    @Override
    public @NotNull ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
        View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.item_viewpager2, viewGroup, false);
        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(ViewHolder viewHolder, final int position) {

    }

    @Override
    public int getItemCount() {
        return list.size();
    }

    public static class ViewHolder extends RecyclerView.ViewHolder {
        public ViewHolder(View view) {
            super(view);

        }
    }
}

MainActivity

public class App extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        setContentView(R.layout.activity_main);
        super.onCreate(savedInstanceState);
    
        ViewPager2 viewPager2;
        List<String> list = new ArrayList<>();

        list.add("1");
        list.add("2");
        list.add("3");
        list.add("4");
        list.add("5");
        list.add("6");
        list.add("7");
        list.add("8");

        viewPager2 = findViewById(R.id.anomologitaViewPager2);

        ViewPager2Adapter adapter = new ViewPager2Adapter(list);

        viewPager2.setAdapter(adapter);

    }
}

You will NOT need my code trust me it works fast and fine without the big neumorphic views the smaller the views the better performance

[VichitraMac]

I'm facing the same issue when I'm using it with recycler view

[UvrajSB]

Me too facing the lag issue with recycler view

[suryamurugesan55]

Me to facing this issue