SliverList SliverChildBuilderDelegate 中的 ListView.builder 在第一次加载时不渲染图像

Question

my images (from api) don't render at first load unless I scroll down and back to top again

here is my code structure

CustomScrollView(
 slivers: [
     SliverList(
       delegate: SliverChildBuilderDelegate(_, index) {
        return Column(children: 
                     [
                     // SLIVERBUILDER INDEX
                     Text(somedata[_index]),
                     // MY IMAGE BUILDER
                     Container(child: ListView.builder(itemBuilder: (_, int index){
                                        return Image.network(arrayOfImages[index]);
                                      }))
                     ]
               );
     }),
 ]
)

Answer 1

Try these:

1. Wrap a column with a container or any parent that could give its child constraints.

 SliverList( delegate: SliverChildBuilderDelegate( (context, index) { return Container( // warp with container height: 450, child: Column(children: [ // SLIVERBUILDER INDEX Text('title'),

2. Wrap ListView.builder with Expanded and add itemCount Property. (In your case 'arrayOfImage.length')

 // MY IMAGE BUILDER Expanded( // add this widget child: ListView.builder( itemCount: arrayOfImage.length, // add this line