title: Flutter broken Apk
body: <p><a href="https://i.stack.imgur.com/LNZcT.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/LNZcT.jpg" alt="enter image description here" /></a>my problem is when i build the apk of my app, the buttons don't appear, do you have any idea why?
  The code I left is the start screen. I can't test it because I can't switch to other screens, but I don't have any problems when working with emulator in android studio.</p>
  <pre><code>class _mainmenuState extends State&lt;mainmenu&gt;{
    @override
    Widget build(BuildContext context) {
      return Scaffold(
          appBar: AppBar(backgroundColor: Colors. red ,title: Text(&quot;Main Menu&quot;),titleTextStyle: TextStyle(fontFamily: 'Helvetica Neue',fontSize: 20)
          ),
          body: Stack(
            children: &lt;Widget&gt;[
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Positioned(top: 0, left: 0, child: button1()),
                ],
              ),
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Positioned(top: 0, left: 0, child: button2()),
                ],
              ),
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Positioned(top: 0, left: 0, child: button3()),
                ],
              ),
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Positioned(top: 0, left: 0, child: button4()),
                ],
              ),
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Positioned(top: 0, left: 0, child: button5()),
                ],
              ),
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Positioned(top: 0, left: 0, child: button6()),
                ],
              ),
            ],
          )
      );
    }
  }
  </code></pre>
  <p>the structure of the buttons is the same so I am sending one:</p>
  <pre><code>    [class button1 extends StatelessWidget {
    @override
    Widget build(BuildContext context) {
      return Align(
        alignment: AlignmentDirectional(-0.95, -0.66),
        child: ElevatedButton(
          child: const Text('LEGS',
              style: TextStyle(height: 1, fontSize: 14)
          ),
  
          onPressed: () {
            Navigator.push(
              context,
              MaterialPageRoute(
                  builder: (context) =&gt; legsscreen()),
            );
          },
          style: ElevatedButton.styleFrom(
            minimumSize: Size(140.0, 47.0),
            shape: RoundedRectangleBorder( borderRadius: BorderRadius.only(topLeft: Radius.zero, topRight: Radius.circular(30), bottomLeft: Radius.zero, bottomRight: Radius.circular(30) ) ),
            primary: Colors.red,
          ),
        ),
      );
    }
  }][1]
  </code></pre>