Failed assertion: line 110 pos 12: '_positions.isNotEmpty'

[dingzuhua]

I have 5 pieces of data in my Swiper, I have an Index record of the current position, and when I delete the last item, I move the Index forward and delete the last item. This is when the error is reported.

flutter: The following assertion was thrown:
flutter: ScrollController not attached to any scroll views.
flutter: 'package:flutter/src/widgets/scroll_controller.dart':
flutter: Failed assertion: line 110 pos 12: '_positions.isNotEmpty'
flutter:
flutter: Either the assertion indicates an error in the framework itself, or we should provide substantially
flutter: more information in this error message to help you determine and fix the underlying cause.

[dingzuhua]

As a test, swiperlayout. DEFAULT appears when layout is selected

[weiminghuaa]

I only can use DEFAULT layout. This bug should be fixed, please do it.

[weiminghuaa]

If don't set index, it's ok!

[weiminghuaa]

        Swiper(
            loop: false,
            itemBuilder: (BuildContext context, int index) {
              return Center(
                  child: Image.file(
                _imageList[index],
                fit: BoxFit.fill,
              ));
            },
            itemCount: _imageList.length,
            index: _index == widget.initialIndex ? _index : null,
            onIndexChanged: (index) {
              setState(() {
                _index = index;
              });
            },
         )

[amit-rawal]

    Swiper(
        loop: false,
        itemBuilder: (BuildContext context, int index) {
          return Center(
              child: Image.file(
            _imageList[index],
            fit: BoxFit.fill,
          ));
        },
        itemCount: _imageList.length,
        index: _index == widget.initialIndex ? _index : null,
        onIndexChanged: (index) {
          setState(() {
            _index = index;
          });
        },
     )

Working , thanks brother