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| import 'dart:async';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
class TaskBlinkingButton extends StatefulWidget {
final Widget child;
Function onClick;
bool isAnimating ;
TaskBlinkingButton({Key? key, required this.child, required this.onClick, required this.isAnimating}): super(key: key);
@override
State<StatefulWidget> createState() {
return _taskblinkState();
}
}
class _taskblinkState extends State<TaskBlinkingButton>
with
SingleTickerProviderStateMixin {
late AnimationController _controller;
late Animation<double> _opacityAnimation;
@override
void initState() {
super.initState();
_controller = AnimationController(
duration: Duration(milliseconds: 300),
vsync: this,
)..repeat(reverse: true);
_opacityAnimation = Tween<double>(begin: 0.2, end: 1.0).animate(
CurvedAnimation(
parent: _controller,
curve: Curves.easeInOut,
),
);
}
@override
Widget build(BuildContext context) {
return AnimatedBuilder(animation: _controller, builder: (BuildContext context, Widget? child) {
return AnimatedOpacity(
opacity: widget.isAnimating ? _opacityAnimation.value : 1,
duration: Duration(milliseconds: 500),
child: CupertinoButton(
onPressed: () {
widget.onClick();
},
child: widget.child,
),
);
},);
}
@override
void dispose() {
_controller.dispose();
super.dispose();
}
}
|