Two Vertical RecyclerView scrolling at the same time

Question

I have two RecyclerView, both have a vertical orientation, I need to scroll one of them so that the second scrolls, that is, their scrolling is synchronous, I thought that it is possible to apply one LinearLayoutManager to these two RecyclerView and then it will be work, but in this log, the error LinearLayoutManager is already attached to a RecyclerView will be generated, so I don't know how to be, help me find a solution, I need two independent RecyclerView with different adapters, but which scroll synchronously, so do not write about GridLayoutManager, thanks.

xml

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal">

        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/rv_0"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:clipToPadding="false"
            android:orientation="vertical"/>

        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/rv_1"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:clipToPadding="false"
            android:orientation="vertical"/>
    </LinearLayout>

Cod

                val RLM_0 = LinearLayoutManager(context)
                rv_0.setHasFixedSize(false)
                rv_0.isNestedScrollingEnabled = false
                rv_0.layoutManager = RLM_0
                adapter_0 = Adapter_0(itemTasks, requireActivity())
                rv_0.adapter = adapter_0


                val RLM_1 = LinearLayoutManager(context)
                rv_1.setHasFixedSize(false)
                rv_1.isNestedScrollingEnabled = false
                rv_1.layoutManager = RLM_1
                adapter_1 = Adapter_1(itemTasks, requireActivity())
                rv_1.adapter = adapter_1

The question is why do you need two recyclerviews where the scroll is synchronous? While possible it's a lot more complexity than you probably need. You could just have one recyclerview with a standard linear layout and each item (row) contains the 2 views you `always` want to display side by side. (So not GridLayoutManager :-) ) — Andrew, Feb 19 '22 at 21:23

Drioueche Mohammed · Answer 1 · 2022-03-03T09:21:17.067

Solution 1:

Check is: Sync scrolling of multiple RecyclerViews

Solution 2:

There is an other way to do so, the idea is to disable scroll for each recycler view and surround them with a scroll view.

This is how you can implement it:

binding.recyclerViewOne.setOnTouchListener((v, event) -> true);
binding.recyclerViewTwo.setOnTouchListener((v, event) -> true);

And for the layout:

<ScrollView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/recycler_view_one"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager" />
        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/recycler_view_two"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager" />
    </LinearLayout>
</ScrollView>

Two Vertical RecyclerView scrolling at the same time

1 Answers1