extended_nested_scroll_view 0.3.4

  • README.md
  • CHANGELOG.md
  • Example
  • Installing
  • Versions
  • 93

extended_nested_scroll_view #

pub package

NestedScrollView: extended nested scroll view to fix following issues.

1.pinned sliver header issue

2.inner scrollables in tabview sync issue

3.pull to refresh is not work.

Chinese blog

new ExtendedNestedScrollView

Example for issue 1 and Example for issue 2 #

Chinese bolg

you only need to care about pinnedHeaderHeight. issue 2 will be handled with keepOnlyOneInnerNestedScrollPositionActive is true.

    var pinnedHeaderHeight =
        //statusBar height
        statusBarHeight +
            //pinned SliverAppBar height in header
            kToolbarHeight;

  child: ExtendedNestedScrollView(
           headerSliverBuilder: (c, f) {
             return buildSliverHeader(false);
           },
           //
           pinnedHeaderSliverHeight: pinnedHeaderHeight,
           keepOnlyOneInnerNestedScrollPositionActive: true,

old ExtendedNestedScrollView

Example for issue 1 #

give total height of pinned sliver headers in pinnedHeaderSliverHeightBuilder callback

 var tabBarHeight = primaryTabBar.preferredSize.height;
      var pinnedHeaderHeight =
          //statusBar height
          statusBarHeight +
              //pinned SliverAppBar height in header
              kToolbarHeight;

 return NestedScrollView(
        pinnedHeaderSliverHeightBuilder: () {
          return pinnedHeaderHeight;
        },
       

Example for issue 2 #

Step1. #

Put your list which in tabview into NestedScrollViewInnerScrollPositionKeyWidget,and get unique a key

 return extended.NestedScrollViewInnerScrollPositionKeyWidget(
        widget.tabKey,
        // myRefresh.RefreshIndicator(
        // child:
        ListView.builder(
            itemBuilder: (c, i) {
              return Container(
                //decoration: BoxDecoration(border: Border.all(color: Colors.orange,width: 1.0)),
                alignment: Alignment.center,
                height: 60.0,
                child: Text(widget.tabKey.toString() + ": List$i"),
              );
            },
            itemCount: 100)
        //,
        //onRefresh: onRefresh,
        // )
        );

Step 2 #

get current tab key in innerScrollPositionKeyBuilder callback. this key should as same as in step 1 given.

 extended.NestedScrollView(
        innerScrollPositionKeyBuilder: () {
          var index = "Tab";
          if (primaryTC.index == 0) {
            index +=
                (primaryTC.index.toString() + secondaryTC.index.toString());
          } else {
            index += primaryTC.index.toString();
          }
          return Key(index);
        },

Example for NestedScrollView pull to refresh #

NestedScrollViewRefreshIndicator is as the same as Flutter RefreshIndicator.

 NestedScrollViewRefreshIndicator(
       onRefresh: onRefresh,
       child: extended.NestedScrollView(
         headerSliverBuilder: (c, f) {
           return _buildSliverHeader(primaryTabBar);
         },

Please see the example app of this for a full example.

[0.3.4]

  • New ExtendedNestedScrollView still has some issues in special layout, make it as obsolete for now till find a better solution

[0.3.3]

  • fix issue that Caught error: type 'Future<void>' is not a subtype of type 'Future<Null>' for old extended_nested_scroll_view

[0.2.9]

  • fix issue [0.2.5] for old extended_nested_scroll_view

[0.2.7]

  • fix issue for quick change page
  • handle unavailable page change(no actived nested positions in it)

[0.2.5]

  • fix issue that ut postion is not overscroll actually,it get minimal value and will scroll inner positions igore minimal value here(value like following data) /// I/flutter (14963): 5.684341886080802e-14 /// I/flutter (14963): -5.684341886080802e-14 if (innerDelta != 0.0 && innerDelta.abs() > 0.0001) { for (_NestedScrollPosition position in _activedInnerPositions) { position.applyFullDragUpdate(innerDelta); } }

[0.2.0]

  • update new extended_nested_scroll_view demo

[0.1.9]

  • set keepOnlyOneInnerNestedScrollPositionActive default value: false

[0.1.8]

  • update new ExtendedNestedScrollView readme

[0.1.7]

  • add assert for keepOnlyOneInnerNestedScrollPositionActive ///when ExtendedNestedScrollView body has [TabBarView]/[PageView] and children have ///AutomaticKeepAliveClientMixin or PageStorageKey, ///[_innerController.nestedPositions] will have more one, ///when you scroll, it will scroll all of nestedPositions ///set [keepOnlyOneInnerNestedScrollPositionActive] true to avoid it. ///notice: only for Axis.horizontal [TabBarView]/[PageView] and ///[scrollDirection] must be Axis.vertical. assert(!(widget.keepOnlyOneInnerNestedScrollPositionActive && widget.scrollDirection == Axis.horizontal));

[0.1.6]

  • fix issue: Actived [_NestedScrollPosition] is not right for multiple

[0.1.5]

  • add new ExtendedNestedScrollView to slove issue more smartly.

[0.1.4]

  • Update readme.

[0.1.3]

  • Update demo.

[0.1.2]

  • Remove unused method.

[0.1.1]

  • Update demo.

[0.1.0]

  • Upgrade Some Commments.

[0.0.1]

  • Initial Open Source release.

example/README.md

example #

extened nested scroll view example

Getting Started #

For help getting started with Flutter, view our online documentation.

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:


dependencies:
  extended_nested_scroll_view: ^0.3.4

2. Install it

You can install packages from the command line:

with Flutter:


$ flutter packages get

Alternatively, your editor might support flutter packages get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:


import 'package:extended_nested_scroll_view/extended_nested_scroll_view.dart';
  
Version Uploaded Documentation Archive
0.3.4 Apr 12, 2019 Go to the documentation of extended_nested_scroll_view 0.3.4 Download extended_nested_scroll_view 0.3.4 archive
0.3.3 Apr 11, 2019 Go to the documentation of extended_nested_scroll_view 0.3.3 Download extended_nested_scroll_view 0.3.3 archive
0.3.2 Mar 27, 2019 Go to the documentation of extended_nested_scroll_view 0.3.2 Download extended_nested_scroll_view 0.3.2 archive
0.3.1 Feb 14, 2019 Go to the documentation of extended_nested_scroll_view 0.3.1 Download extended_nested_scroll_view 0.3.1 archive
0.3.0 Feb 14, 2019 Go to the documentation of extended_nested_scroll_view 0.3.0 Download extended_nested_scroll_view 0.3.0 archive
0.2.9 Feb 3, 2019 Go to the documentation of extended_nested_scroll_view 0.2.9 Download extended_nested_scroll_view 0.2.9 archive
0.2.8 Feb 1, 2019 Go to the documentation of extended_nested_scroll_view 0.2.8 Download extended_nested_scroll_view 0.2.8 archive
0.2.7 Jan 30, 2019 Go to the documentation of extended_nested_scroll_view 0.2.7 Download extended_nested_scroll_view 0.2.7 archive
0.2.6 Jan 30, 2019 Go to the documentation of extended_nested_scroll_view 0.2.6 Download extended_nested_scroll_view 0.2.6 archive
0.2.5 Jan 29, 2019 Go to the documentation of extended_nested_scroll_view 0.2.5 Download extended_nested_scroll_view 0.2.5 archive

All 25 versions...

Popularity:
Describes how popular the package is relative to other packages. [more]
87
Health:
Code health derived from static analysis. [more]
100
Maintenance:
Reflects how tidy and up-to-date the package is. [more]
100
Overall:
Weighted score of the above. [more]
93
Learn more about scoring.

We analyzed this package on Apr 16, 2019, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.2.0
  • pana: 0.12.14
  • Flutter: 1.4.7

Platforms

Detected platforms: Flutter

References Flutter, and has no conflicting libraries.

Dependencies

Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.0.0-dev.68.0 <3.0.0
flutter 0.0.0
Transitive dependencies
collection 1.14.11
meta 1.1.6 1.1.7
sky_engine 0.0.99
typed_data 1.1.6
vector_math 2.0.8
Dev dependencies
flutter_test