AnimatedAlignSwipe.dart

class _MyHomePageState extends State<MyHomePage> {
  bool animatePosition = false;
  Alignment currentAlignment = Alignment.topLeft;
  Alignment resultAlignment = Alignment.topLeft;
  int sensitivity = 8;
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Container(
        color: Colors.blueGrey,
        child: AnimatedAlign(
            alignment: animatePosition ? resultAlignment : currentAlignment,
            duration: const Duration(seconds: 1),
            curve: Curves.fastOutSlowIn,
            child: GestureDetector(
              onHorizontalDragUpdate: (details) {
                if (details.delta.dx > sensitivity) {
                  setState(() {
                    animatePosition = true;
                    if (resultAlignment == Alignment.topLeft) {
                      resultAlignment = Alignment.topRight;
                    } else if (resultAlignment == Alignment.bottomLeft) {
                      resultAlignment = Alignment.bottomRight;
                    }
                  });
                } else if (details.delta.dx < -sensitivity) {
                  setState(() {
                    animatePosition = true;
                    if (resultAlignment == Alignment.topRight) {
                      resultAlignment = Alignment.topLeft;
                    } else if (resultAlignment == Alignment.bottomRight) {
                      resultAlignment = Alignment.bottomLeft;
                    }
                  });
                }
              },
              onVerticalDragUpdate: (details) {
                if (details.delta.dy > sensitivity) {
                  setState(() {
                    animatePosition = true;
                    if (resultAlignment == Alignment.topLeft) {
                      resultAlignment = Alignment.bottomLeft;
                    } else if (resultAlignment == Alignment.topRight) {
                      resultAlignment = Alignment.bottomRight;
                    }
                  });
                } else if (details.delta.dy < -sensitivity) {
                  setState(() {
                    animatePosition = true;
                    if (resultAlignment == Alignment.bottomLeft) {
                      resultAlignment = Alignment.topLeft;
                    } else if (resultAlignment == Alignment.bottomRight) {
                      resultAlignment = Alignment.topRight;
                    }
                  });
                }
              },
              child: Container(
                height: 100,
                width: 100,
                color: Colors.green,
              ),
            )),
      ),
    );
  }
}