title: ImageView shrinks when put into GridLayout in Android studio
body: <p>I'm doing a game tutorial for something like Tic-Tac-Toe. First thing in the tutorial is to create a GridLayout and an ImageView inside. But once I do it, ImageView resize to a very small dot and I can't fix it in any way:
  <a href="https://i.stack.imgur.com/I1PXi.gif" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/I1PXi.gif" alt="ImageView becomes very small in GridView"></a></p>
  
  <p>I have tried to:</p>
  
  <ol>
  <li>Manually resize the image (value of width and height changes, but the image still apears tiny)</li>
  <li>Check <em>Adjust View Bounds</em> property</li>
  <li>Put the ImageView in different <em>layout_columns</em> and <em>layout_rows</em></li>
  <li>Set android:layout_weight="1" from <a href="https://stackoverflow.com/questions/42877005/resize-imageviews-in-a-grid-layout">this post</a></li>
  </ol>
  
  <p>I was looking through another posts with this issue, but the difference is I haven't started to write the app code yet. I mean, I'm not so sure if I should use the solution presented for example here:
  <a href="https://stackoverflow.com/questions/31311355/fixing-tiny-images-in-gridview">Fixing tiny images in GridView?</a>
  Is there another way to fix image size without writing special code in the starting section of the app?</p>
  
  <p>My Android Studio version is 3.1.3</p>