title: flutter TweenAnimationBuilder is not working
body: <p>I want to run a tag animation horizontal one time only when user want to see detail of product there is a Tag of sale but nothing happen. I've looked all solutions but couldn't solve myself.</p>
  <p>This is the GIF,</p>
  <p><a href="https://i.stack.imgur.com/fGfVy.gif" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/fGfVy.gif" alt="This is the gif how I want to move." /></a></p>
  <p>and this is image of stack I want to move like in gif a line is moving</p>
  <p><a href="https://i.stack.imgur.com/0OBq2.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/0OBq2.png" alt="enter image description here" /></a></p>
  <pre><code>return SafeArea(
    child: Scaffold(
      backgroundColor: fBackgroundColor,
      appBar: PreferredSize(
          preferredSize: const Size.fromHeight(50),
          child: subAppBarMain(context)),
      body: Column(
        children: [
          Expanded(
            child: ListView(
              children: [
                Padding(
                  padding: const EdgeInsets.symmetric(
                      horizontal: 10.0, vertical: 10.0),
                  child: Container(
                    decoration: BoxDecoration(
                        color: Colors.white,
                        borderRadius: BorderRadius.circular(10.0)),
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        SizedBox(
                          height: 10.0,
                        ),
                        Center(
                          child: Image.asset(
                            widget.listModel.image!,
                          ),
                        ),
                        TweenAnimationBuilder(
                            tween: Tween&lt;double&gt;(
                                begin: 0.0,
                                end: MediaQuery.of(context).size.width),
                            duration: const Duration(milliseconds: 4000),
                            builder: (context, double i, _) {
                              return Stack(
                                children: [
                                  SizedBox(
                                    height: 20,
                                    width: 115,
                                    child: CustomPaint(
                                      painter: PriceTagPaint(),
                                      child: Center(
                                        child: Padding(
                                          padding: const EdgeInsets.only(
                                              right: 16.0),
                                          child: Align(
                                            alignment: Alignment.centerRight,
                                            child: Text(
                                              widget.listModel.sale!,
                                              textAlign: TextAlign.center,
                                              style: const TextStyle(
                                                  fontSize: 10,
                                                  fontWeight: FontWeight.bold,
                                                  color: Colors.white),
                                            ),
                                          ),
                                        ),
                                      ),
                                    ),
                                  ),
                                  Container(
                                    width: 50,
                                    height: 20,
                                    color: Colors.black,
                                    child: const Center(
                                      child: Text(
                                        &quot;SALE&quot;,
                                        style: TextStyle(
                                            fontSize: 10,
                                            fontWeight: FontWeight.w500,
                                            color: Colors.white),
                                      ),
                                    ),
                                  ),
                                ],
                              );
                            }),
                        SizedBox(
                          height: 20,
                          width: 65,
                          child: CustomPaint(
                            painter: ExpressPaint(),
                            child: Center(
                              child: Text(
                                widget.listModel.express!,
                                style: const TextStyle(
                                    fontSize: 10,
                                    fontWeight: FontWeight.bold,
                                    color: Colors.black),
                              ),
                            ),
                          ),
                        ),
  </code></pre>
  <p>Where I'm making mistake?</p>