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How can i prevent that scroll offset be bigger than view content (NestedScrollView and TabBarView)

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I'm using slivers to get a animated page with a header collapsable and a TabView body, but the offset of scroll is considering the fully page. What i need to do to get the right offset ? I'm putting an example about what happens.

I'm using flutter 1.2.1

 NestedScrollView(
 controller: _scrollController,
 headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) 
 return [
 SliverAppBar(
 pinned: true,
 backgroundColor: greenColor.withOpacity(0.6),
 flexibleSpace: FlexibleSpaceBar(
 collapseMode: CollapseMode.pin,
 background: _buildHeader(context),
 ),
 expandedHeight: 300.0,
 bottom: _buildTabBar(),
 )
 ];
 ,
 body: _buildTabView(context),
 )

I expect the offset stops when the header stops of being collapsed

scroll dart flutter tabs tabview

share|improve this question

asked Mar 26 at 21:51

lucas brittolucas britto

6266 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  you could remove withOpacity : greenColor.withOpacity(0.6)
  
  – diegoveloper
  Mar 27 at 4:22
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @diegoveloper i put the opacity just to show the problem, the contents is going to behind the app bar and needs to stop when the header stops to being collapsed, the right way is to go behind when the content of the page will be larger than the space, can you understand ? I'm sorry for english mistakes, i'm not fluently
  
  – lucas britto
  Mar 27 at 13:09
  

  
  
  
  

add a comment | 

0

I'm using slivers to get a animated page with a header collapsable and a TabView body, but the offset of scroll is considering the fully page. What i need to do to get the right offset ? I'm putting an example about what happens.

I'm using flutter 1.2.1

 NestedScrollView(
 controller: _scrollController,
 headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) 
 return [
 SliverAppBar(
 pinned: true,
 backgroundColor: greenColor.withOpacity(0.6),
 flexibleSpace: FlexibleSpaceBar(
 collapseMode: CollapseMode.pin,
 background: _buildHeader(context),
 ),
 expandedHeight: 300.0,
 bottom: _buildTabBar(),
 )
 ];
 ,
 body: _buildTabView(context),
 )

I expect the offset stops when the header stops of being collapsed

scroll dart flutter tabs tabview

share|improve this question

asked Mar 26 at 21:51

lucas brittolucas britto

6266 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  you could remove withOpacity : greenColor.withOpacity(0.6)
  
  – diegoveloper
  Mar 27 at 4:22
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @diegoveloper i put the opacity just to show the problem, the contents is going to behind the app bar and needs to stop when the header stops to being collapsed, the right way is to go behind when the content of the page will be larger than the space, can you understand ? I'm sorry for english mistakes, i'm not fluently
  
  – lucas britto
  Mar 27 at 13:09
  

  
  
  
  

add a comment | 

I'm using slivers to get a animated page with a header collapsable and a TabView body, but the offset of scroll is considering the fully page. What i need to do to get the right offset ? I'm putting an example about what happens.

I'm using flutter 1.2.1

 NestedScrollView(
 controller: _scrollController,
 headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) 
 return [
 SliverAppBar(
 pinned: true,
 backgroundColor: greenColor.withOpacity(0.6),
 flexibleSpace: FlexibleSpaceBar(
 collapseMode: CollapseMode.pin,
 background: _buildHeader(context),
 ),
 expandedHeight: 300.0,
 bottom: _buildTabBar(),
 )
 ];
 ,
 body: _buildTabView(context),
 )

I expect the offset stops when the header stops of being collapsed

scroll dart flutter tabs tabview

share|improve this question

asked Mar 26 at 21:51

lucas brittolucas britto

6266 bronze badges

 NestedScrollView(
 controller: _scrollController,
 headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) 
 return [
 SliverAppBar(
 pinned: true,
 backgroundColor: greenColor.withOpacity(0.6),
 flexibleSpace: FlexibleSpaceBar(
 collapseMode: CollapseMode.pin,
 background: _buildHeader(context),
 ),
 expandedHeight: 300.0,
 bottom: _buildTabBar(),
 )
 ];
 ,
 body: _buildTabView(context),
 )

scroll dart flutter tabs tabview

scroll dart flutter tabs tabview

share|improve this question

asked Mar 26 at 21:51

lucas brittolucas britto

6266 bronze badges

share|improve this question

asked Mar 26 at 21:51

lucas brittolucas britto

6266 bronze badges

asked Mar 26 at 21:51

lucas brittolucas britto

6266 bronze badges

asked Mar 26 at 21:51

lucas brittolucas britto

6266 bronze badges