title: How to add a fix symbol in TextInput which remains static when the uses enters something (React Native)
body: <p>So, I've a text box to enter username. And I want a @ symbol at the beginning of this <code>TextInput</code>. Also, this @ symbol shouldn't be able to be removed.</p>
  
  <p><a href="https://i.stack.imgur.com/vkDYw.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/vkDYw.png" alt="enter image description here"></a>
  How can I make @ symbol static here? <code>defaultValue</code> won't help me in my case.</p>