ezanimation 0.4.0

Flutter Android iOS web

Easy Animations - No Controllers, No Tickers, Only the necessary parts.

ezanimation #

Easy Animations - No Controllers, No Tickers, Only the necessary parts.

NO NEED TO ADD TickerProviderStateMixins NO MORE AnimationControllers NO MORE Tweens EASILY ADD Curves AND ReverseCurves

NO MORE COMPLICATION #

Normal animations involve a fair amount of complexity: AnimationControllers, Tweens, Animation, Tickers are not familiar concepts to many. Not just to beginners - when creating an explicit animation, even advanced users experience hardships dealing with the many components involved.

ANNOUNCING EZANIMATION: A SET OF TOOLS TO MAKE ANIMATIONS MUCH EASIER #

With EzAnimation, there is no need to burden your code with TickerProviders, the complicated logic of curves, different components of animation, etc.

TO USE: #

DEFINE EzAnimation #

(RECOMMENDED METHOD 1) Passing context:

EzAnimation animation = EzAnimation(10.0, 100.0, Duration(seconds: 1), context: context);

// This animation needs to be manually restarted when another page is pushed and then Navigator comes back
// The onNavigate param helps define the behaviour when another page is pushed

(RECOMMENDED METHOD 2) Passing vsync:

EzAnimation animation = EzAnimation(10.0, 100.0, Duration(seconds: 1), context: context);

// Here the state class needs to add SingleTickerProviderMixin or TickerProviderMixin
// onNavigate does not work in this case as the page ticker defines the state of the animation

A SIMPLE METHOD (LESS PERFORMANT): No context or vsync

EzAnimation animation = EzAnimation(10.0, 100.0, Duration(seconds: 1));

// Note that this animation needs to be manually stopped if you intend to push another page as it will go to completion without it.

(Notice that you can define this outside of initState, unlike normal animation controllers)

START ANIMATION #

animation.start();

// OR

animation.start(from: 0.2);

END ANIMATION #

animation.stop();

REPEAT ANIMATION #

animation.repeat();

RESET ANIMATION #

animation.reset();

REVERSE ANIMATION #

animation.reverse();

// OR

animation.reverse(from: 0.5);

DEFINE WHAT HAPPENS WHEN NAVIGATOR PUSHES ANOTHER PAGE ON TOP #

EzAnimation animation = EzAnimation(10.0, 100.0, Duration(seconds: 1), context: context, onNavigate: OnNavigate.pauseAnimation);

An animation can either reset or pause when the navigator pushes another page on top. Use the onNavigate page to achieve this.

NOTE: A PAUSED ANIMATION NEEDS TO BE MANUALLY RESTARTED AFTER COMING BACK TO THE MAIN PAGE

onPressed: () async {
    await Navigator.of(context).push(MaterialPageRoute(builder: (context) => DemoPage()));
    animation.start();
}

resetAnimation -> Resets animation to the start
pauseAnimation -> Pauses animation at that instant (You need to manually restart this when it comes back)
letItRun -> Animation will go to completion unless animation.stop() is called.
takeToEnd -> Takes animation to final value instantly

REBUILD UI #

You can use normal listeners and rebuild UI with AnimatedBuilder as usual.

animation.addListener(() { 
  setState(() {});
});

//OR

AnimatedBuilder(
    animation: animation,
    builder: (context, snapshot) {
      return Center(
        child: Container(
          width: animation.value,
          height: animation.value,
          color: Colors.blue,
        ),
      );
    }
  ),

ADD CURVES EASILY #

var animation = EzAnimation(10.0, 100.0, Duration(seconds: 1), curve: Curves.bounceInOut, reverseCurve: Curves.linear);

LISTEN TO STATUS #

animation.addStatusListener((status) {
  if (status == AnimationStatus.completed) {
    animation.reverse();
  }
});

USE ANIMATION SEQUENCES #

You can have multiple animations running in series with weights with EzAnimation.sequence()

EzAnimation ezAnimation = EzAnimation.sequence([
  SequenceItem(0.0, 100.0, weight: 2),
  SequenceItem(100.0, 50.0),
  SequenceItem(50.0, 100.0),
], Duration(seconds: 2), context: context);

ezAnimation.start();

USE SPECIALIZED TWEENS #

Use the EzAnimation.tween() to pass in other Tween types such as ColorTween

EzAnimation ezAnimation = EzAnimation.tween(ColorTween(begin: Colors.red, end: Colors.blue), Duration(seconds: 2), context: context);

ezAnimation.start();

Similarly, the EzAnimation.tweenSequence allows you to create a sequence with ColorTweens and other tweens

EzAnimation ezAnimation = EzAnimation.tweenSequence(TweenSequence([
    TweenSequenceItem(tween: ColorTween(begin: Colors.red, end: Colors.blue), weight: 1.0),
    TweenSequenceItem(tween: ColorTween(begin: Colors.red, end: Colors.blue), weight: 2.0),
]), Duration(seconds: 2), context: context);
57
likes
110
pub points
69%
popularity

Publisher

joshi.dev

Easy Animations - No Controllers, No Tickers, Only the necessary parts.

Repository

Documentation

API reference

License

BSD (LICENSE)

Dependencies

flutter

More

Packages that depend on ezanimation