title: How to align widget to another widget in Flutter?
body: <p>I have a <code>RaisedButton</code> widget inside of a <code>Center</code> widget as one of the widgets in a <code>Column</code> of widgets. I want to add a <code>CircularProgressIndicator</code> to the right side of this button and show it when the button is pressed. Yet I want to leave the button centred when the progress bar is shown. In other words I want the button always be in the center and the progress bar aligned to this button.</p>
  
  <p>I tried to use a <code>Row</code> here but this pushes the button and it becomes not centred any more.</p>
  
  <p><strong>EDIT1:</strong> Looking at the result of the solution provided by <strong>@Anil Chauhan</strong> (thanks for the answer):</p>
  
  <p>Like I said before that I tried to use Row like he did, the problem is that in this case the button is not in the centred in the screen and is pushed by the progress bar. And I need it to stay in the middle of it's row.</p>
  
  <p><a href="https://i.stack.imgur.com/eshdX.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/eshdX.jpg" alt="enter image description here"></a></p>
  
  <p><strong>EDIT2:</strong> <strong>@Anil Chauhan</strong> edited answer now works for a specific case in which the button is predetermined size. But if the size of the button is changed based on the language of the text (in apps that have several languages) this solution will not work.</p>
  
  <p>This is the reason the question I asked is: "How to align widget to another widget". Because if I could that I don't have to worry about the button text size any more.</p>
  
  <p>What would be the right way to handle this in Flutter?</p>