title: flutter - how to set width when wrapping on gridview?
body: <p>I have an issue when want to make a like <code>Tags Widget</code> using <code>GridView</code>, 
  see result:</p>
  
  <p><a href="https://i.stack.imgur.com/JKiyu.png" rel="noreferrer"><img src="https://i.stack.imgur.com/JKiyu.png" alt="image"></a></p>
  
  <p>I <strong>want</strong> to make it as shown below:
      <a href="https://i.stack.imgur.com/IbipE.png" rel="noreferrer"><img src="https://i.stack.imgur.com/IbipE.png" alt="image"></a></p>
  
  <p>but the width of the button is set automatically from <code>GridView</code> wrapping.</p>
  
  <p>how to make the <code>width</code> set dynamically?</p>
  
  <p><strong>any answer will be appreciated.</strong></p>