[已解决]消除Flutter Sliver之间存在的间隙_sliverchildbuilderdelegate 多张图片之间缝隙

在使用NestedScrollView构建嵌套布局时，Flutter的Sliver之间存在约1px的间隙，使用下述方案解决：

加入boxShadow掩盖即可：

NestedScrollView{
	headerSliverBuilder:
                  (BuildContext context, bool innerBoxIsScrolled) {
                  return [
                  SliverPersistentHeader(
                      pinned: true,
                      delegate: SliverXXXDelegate.fixedHeight(
                        child: Container(
                          padding: EdgeInsets.only(
                              top: MediaQuery.of(context).padding.top),
                          decoration:
                              BoxDecoration(color: Colors.white, 
                              boxShadow: [
                            	BoxShadow(
                             	 color: Colors.white,
                             	 blurRadius: 0.0,
                             	 spreadRadius: 0.0,
                              	offset: Offset(0, 2),
                            ),
                          ]),
                          child:...
                          ),
                        ),
                      )),
                  SliverPersistentHeader(
                      pinned: true,
                      delegate: SliverXXXDelegate.fixedHeight(
                        child: Container(
                          padding: EdgeInsets.only(
                              top: MediaQuery.of(context).padding.top),
                          decoration:
                              BoxDecoration(color: Colors.white, boxShadow: [
                            BoxShadow(
                              color: Colors.white,
                              blurRadius: 0.0,
                              spreadRadius: 0.0,
                              offset: Offset(0, 2),
                            ),
                          ]),
                          child:...
                          ),
                        ),
                      )),				
                      ];
	},
	body:
		{...}
}
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参考资料

https://github.com/flutter/flutter/issues/37578#issuecomment-640302364