build<T> method

Widget build<T>({
  1. required T startValue,
  2. required T endValue,
  3. required TransitionBuilder builder,
  4. Widget? child,
})

构建动画Widget

startValue 动画开始值 endValue 动画结束值 builder 构建动画的回调函数 child 子Widget

返回一个AnimatedBuilder对象

Implementation

Widget build<T>(
    {required T startValue,
    required T endValue,
    required TransitionBuilder builder,
    Widget? child}) {
  Animation animation =
      Tween(begin: startValue, end: endValue).animate(_animationController);
  return AnimatedBuilder(
      animation: animation, builder: builder, child: child);
}