Simplified Flutter stagger animation

Flutter Animation Set

Simplified Flutter stagger animation.To drive the Flutter stagger animation through a timeline in the form of an animation configuration.You can

1. Uses the existing Animation Widget of Flutter Animation Set
2. Use Flutter Animation Set to create a new Animation Widget
3. Contribute your Flutter Animation Set Widget
4. Watch All of the Curves of Flutter in example

? Installing

dependencies:
  flutter_animation_set: ^0.0.4

⚡ Use Animation Set Widget

1、import

import 'package:flutter_animation_set/widget/transition_animations.dart';
import 'package:flutter_animation_set/widget/behavior_animations.dart';

2、use

child: YYRotatingPlane(),

3、road map

transition_animations

YYRotatingPlane ✅	YYDoubleBounce ✅	YYWave ✅	YYWanderingCubes ✅	YYFadingFour ✅	YYFadingCube ✅
YYPulse ✅	YYThreeBounce ✅	YYThreeLine ✅	YYCubeGrid ✅	YYRotatingCircle ✅	YYPumpingHeart ✅
YYRipple ✅	YYRotateLine ✅	YYCubeFadeIn ✅	YYBlinkGrid ✅

behavior_animations

YYFadeButton ✅

YYSingleLike ✅

YYLove ✅

YYSpringMenu ✅

YYFoldMenu ✅

4、thanks

• flutter_spinkit

⚡ Create Animation Set Widget By YourSelf

1、import

import 'package:flutter_animation_set/animation_set.dart';
import 'package:flutter_animation_set/animator.dart';

2、use widget

AnimatorSet(
    child: widget.child,
    animatorSet: [],
    animationType: AnimationType.reverse,
    debug: false,
)

AnimatorSet Supported properties

The properties of the animationType

3、use AnimatorSet api

about animation widget

about support widget

⚡ For Example

1、create timeLine

1. This figure shows that the core components of the animation are made according to the timeLine
2. In the process of execution, there are 6 animations simultaneously, and the total animation duration is 900ms
3. ScaleY components are used to scale up and down in order to make each rectangle have a wave effect
4. Drag the timeline with the Delay component to reach the animation duration of 900ms

2、build animatorSet

Assemble our animation component using the diagram above, which has the following properties

• from:Animation initial value
• to:End of animation value
• duration:Animation time
• delay:The delay in actually executing the animation
• curve:Animation interpolator

animatorSet: [
  Delay(duration: before),
  SY(from: 0.8, to: 1.6, duration: 200, delay: 0, curve: Curves.linear),
  SY(from: 1.6, to: 0.8, duration: 200, delay: 0, curve: Curves.linear),
  Delay(duration: after),
],

The object that the animation executes is Container rectangle

Widget makeWave(int before, int after) {
  return AnimatorSet(
    child: Container(
      color: Colors.white,
      width: 5,
      height: 15,
    ),
    animatorSet: [
      Delay(duration: before),
      SY(from: 0.8, to: 1.6, duration: 200, delay: 0, curve: Curves.linear),
      SY(from: 1.6, to: 0.8, duration: 200, delay: 0, curve: Curves.linear),
      Delay(duration: after),
    ],
  );
}

3、convert to code

class YYWave extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container(
      width: 40,
      height: 40,
      child: Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: <Widget>[
          makeWave(0, 500),
          makeWave(100, 400),
          makeWave(200, 300),
          makeWave(300, 200),
          makeWave(400, 100),
          makeWave(500, 0),
        ],
      ),
    );
  }
}

4、done

More

1、Combination of animation

The scaling effect requires scaling both the X and Y axes, uses the Serial Widget

animatorSet: [
  Serial(
    duration: 2000,
    serialList: [
      SX(from: 0.0, to: 1.0, curve: Curves.easeInOut),
      SY(from: 0.0, to: 1.0, curve: Curves.easeInOut),
      O(from: 0.5, to: 0.0, delay: 1000, curve: Curves.easeInOut),
    ],
  ),
],

done

2、Time-lapse animations

Deal with the delay attribute when you actually do the animation

class YYThreeLine extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container(
      width: 40,
      height: 40,
      child: Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: <Widget>[
          makeLine(0),
          makeLine(50),
          makeLine(100),
        ],
      ),
    );
  }
}

Widget makeLine(int delay) {
  return AnimatorSet(
    child: Container(
      color: Colors.white,
      width: 10,
      height: 5,
    ),
    animatorSet: [
      TY(from: 0.0, to: 5.0, duration: 400, delay: delay, curve: Curves.fastOutSlowIn,),
      TY(from: 5.0, to: 0.0, duration: 400, curve: Curves.fastOutSlowIn,),
    ],
  );
}

done

3、Reverse animation

After the animation can be played, set animationtype.reverse through the animationType property, making the animation play back

class YYFoldMenu extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container(
      width: 40,
      height: 40,
      child: Column(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: <Widget>[
          makeFoldMenu(0, 40),
          makeFoldMenu(100, 26.0),
          makeFoldMenu(200, 12.0),
        ],
      ),
    );
  }
}

Widget makeFoldMenu(int delay, double toY) {
  return AnimatorSet(
    animationType: AnimationType.reverse,
    child: Container(
      decoration: BoxDecoration(
        color: Colors.white,
      ),
      width: 30,
      height: 10,
    ),
    animatorSet: [
      Serial(
        duration: 2000,
        delay: delay,
        serialList: [
          TY(from: 0.0, to: toY, curve: Curves.elasticInOut),
          SX(from: 1.0, to: 0.1, curve: Curves.elasticInOut),
          SY(from: 1.0, to: 0.1, curve: Curves.elasticInOut),
        ],
      ),
    ],
  );
}

done

GitHub

https://github.com/YYFlutter/flutter-animation-set