animated_item

A Flutter plugin that animates ListView and PageView items on scroll.

Previews

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Animated item for [ListViews]

Animated page for [PageViews]

Installation

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Add animated_item as a dependency in your pubspec.yaml file.

animated_item: ^<latest-version>

Usage

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AnimatedItem uses the ScrollController's scroll offset to animate child in a [ListView].

ListView.builder(
  itemCount: colors.length,
  scrollDirection: Axis.horizontal,
  controller: _scaleController,
  itemBuilder: (context, index) {
    return AnimatedItem(
      controller: _scaleController,
      index: index,
      effect: const ScaleEffect(),
      child: Container(
        margin: const EdgeInsets.all(5.0),
        width: width,
        decoration: BoxDecoration(
          color: colors[index],
          borderRadius: _borderRadius),
      )
    );
  },
)

AnimatedPage uses the PageController's scroll offset to animate child in a [PageView].

PageView.builder(
  controller: _scaleController,
  itemCount: colors.length,
  itemBuilder: (context, index) {
    return AnimatedPage(
      controller: _scaleController,
      index: index,
      effect: const ScaleEffect(),
      child: Container(
        margin: const EdgeInsets.all(5.0),
        width: width,
        decoration: BoxDecoration(
          color: colors[index], 
          borderRadius: _borderRadius),
      )
    );
  },
)

Customization

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Here is a list of properties available to customize your effect:

Name	Type	Description
type	AnimationType	Determines start and end of effect.
snap	bool	If active snaps back to original position when not scrolling.
animationAxis	Axis	Animation axis for [TranslateEffect].
startOffset	int	The animation start offset for [TranslateEffect]. Use negative numbers to reverse translate.
alignment	AlignmentGeometry	The alignment of the origin, relative to the size of the child.
verticalScale	double	Scale effect vertically.
horizontalScale	double	Scale effect horizontally.
rotationAngle	double	Rotation angle for [RotateEffect].
opacity	double	Opacity determines how faded the item becomes. Higher numbers results to more fading.

Contributions

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Contributions of any kind are more than welcome! Feel free to fork and improve animated_item in any way you want, make a pull request, or open an issue.

Support the Library

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You can support the library by liking it on pub, staring in on Github and reporting any bugs you encounter.