The PrimaryScrollController is currently attached to more than one ScrollPosition

Question

I have a flutter design using lazyscrollview https://pub.dev/packages/lazy_load_scrollview , on another page, this scroll works fine, but in this design, when scrolling, it gets an error

"The PrimaryScrollController is currently attached to more than one ScrollPosition."

this is my code

LazyLoadScrollView(
        onEndOfPage: () {},
        child: Scrollbar(
            child: ListView(
          children: [
            ListView.builder(
                shrinkWrap: true,
                itemCount: 10,
                physics: NeverScrollableScrollPhysics(),
                itemBuilder: (_, i) {
                  return InkWell(
                      onTap: () {},
                      child: Container(
                          height: 200,
                          child: Text("kamu " + i.toString())));
                }),
          ],
        )))

Solution

use this way , please change the structure ,it is the best practice

Scaffold(
          body: LazyLoadScrollView(
              scrollOffset: 150,
              onEndOfPage: () {
                print('ppppppppppppppppppppppppppppppppppppppppp');
              },
              child: Scrollbar(
                  child: SingleChildScrollView(
                child: ListView.builder(
                    shrinkWrap: true,
                    itemCount: 10,
                    physics: ClampingScrollPhysics(),
                    itemBuilder: (_, i) {
                      return InkWell(
                          onTap: () {},
                          child: Container(
                              height: 200,
                              child: Text("kamu " + i.toString())));
                    }),
              )))),

and adjust the scrollOffset if you want ,

the debug will be

Comments

[Jinto Joseph]

what is the parent of LazyLoadScrollView, is it Scaffold

[Rohmatul Laily]

i put LazyLoadScrollView at body scaffold

[Jinto Joseph]

ok ,why are you using Scrollbar , ListView . you can use ListView.builder as a child of LazyLoadScrollView

[Rohmatul Laily]

without the scrollbar, scroll indicator is not showing

[Jinto Joseph]

i am edited the Answer with scrollbar

[Jinto Joseph]

you can remove SingleChildScrollView if you want , its up to your use case