type 'Null' is not a subtype of type 'double'

[wudaming1]

When the exception was thrown, this was the stack: #0 TransformerPageController.page (package:flutter_swiper_null_safety/src/transformer_page_view/transformer_page_view.dart:171:9) #1 _PageIndicatorState._createPainer (package:flutter_swiper_null_safety/src/flutter_page_indicator/flutter_page_indicator.dart:235:40) #2 _PageIndicatorState.build (package:flutter_swiper_null_safety/src/flutter_page_indicator/flutter_page_indicator.dart:250:18) #3 StatefulElement.build (package:flutter/src/widgets/framework.dart:4612:27) #4 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4495:15)

just Index: lib/src/transformer_page_view/transformer_page_view.dart IDEA additional info: Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP <+>UTF-8

--- lib/src/transformer_page_view/transformer_page_view.dart (revision 1365b808372e136064d708d17e68faa95bd2eece) +++ lib/src/transformer_page_view/transformer_page_view.dart (revision 6f7c83ab0aef1ae40f808b5e2a7d6dd123337f49) @@ -143,8 +143,8 @@ return renderIndex; }

• double? get realPage {
• return super.page;

• double get realPage {
• return super.page ?? 0.0; }

static _getRenderPageFromRealPage( @@ -363,7 +363,7 @@

       double position = 0;

•      double page = _pageController.realPage ?? 0;
  

•      double page = _pageController.realPage;
  
       if (_transformer != null && _transformer!.reverse) {
         position = page - index;
  

[lianyagang]

When the exception was thrown, this was the stack: #0 TransformerPageController.page (package:flutter_swiper_null_safety/src/transformer_page_view/transformer_page_view.dart:171:9) #1 _PageIndicatorState._createPainer (package:flutter_swiper_null_safety/src/flutter_page_indicator/flutter_page_indicator.dart:235:40) #2 _PageIndicatorState.build (package:flutter_swiper_null_safety/src/flutter_page_indicator/flutter_page_indicator.dart:250:18) #3 StatefulElement.build (package:flutter/src/widgets/framework.dart:4612:27) #4 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4495:15)

just

Index: lib/src/transformer_page_view/transformer_page_view.dart IDEA additional info: Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP <+>UTF-8 --- lib/src/transformer_page_view/transformer_page_view.dart (revision 1365b80) +++ lib/src/transformer_page_view/transformer_page_view.dart (revision 6f7c83ab0aef1ae40f808b5e2a7d6dd123337f49) @@ -143,8 +143,8 @@ return renderIndex; }

• double? get realPage {

• return super.page;

• double get realPage {

• return super.page ?? 0.0; }

static _getRenderPageFromRealPage( @@ -363,7 +363,7 @@

       double position = 0;

•      double page = _pageController.realPage ?? 0;
  

•      double page = _pageController.realPage;
  
       if (_transformer != null && _transformer!.reverse) {
         position = page - index;
  

有没有复现路径？这个错误，看不到什么信息

[wudaming1]

把你demo里面的ExampleVertical的Swiper加上 loop: false属性就可以复现，你咋回的怎么快？

[lianyagang]

把你demo里面的ExampleVertical的Swiper加上 loop: false属性就可以复现，你咋回的怎么快？

最近工作很忙。等我稍微不忙，我处理一下

[eripe970]

I get similar problem, is there a solution? This returns null for me and causing the same error

  double get page {
    return loop
        ? _getRenderPageFromRealPage(realPage, loop, itemCount, reverse)
        : realPage;
  }

[lianyagang]

fix it

[lianyagang]

把你demo里面的ExampleVertical的Swiper加上 loop: false属性就可以复现，你咋回的怎么快？

已修复