title: Images in FlatList not displayed
body: <p>I am using react native and firebase to create an application that's somewhat similar to a social network. In the profile screen I am trying to display the images that the user posted in a FlatList that has 3 columns. My problem is, when trying to display the images so that they occupy the full width of the FlatList, they don't seem to get displayed. However, when I set a fixed height, they do. I would like to make it so that they are shown with a 1/1 aspect ratio without having to fix a height.</p>
  <p>This is my code:</p>
  <pre><code>            &lt;View style={styles.galleryContainer}&gt;
                  &lt;FlatList
                      numColumns={3}
                      horizontal={false}
                      data={posts}
                      renderItem={({ item }) =&gt; (
                          &lt;View style={styles.imageContainer}&gt;
                              &lt;Image
                                  style={styles.image}
                                  source={{ uri: item.downloadURL }}
                              /&gt;
                          &lt;/View&gt;
                      )}
                  /&gt;
              &lt;/View&gt;
  </code></pre>
  <p>And the styles:</p>
  <pre><code>    galleryContainer: {
          flex: 1
      },
      image: {
          flex: 1,
          aspectRatio: 1/1,
          height: 120
  
      },
      imageContainer: {
          flex: 1 / 3
      }
  
  </code></pre>
  <p>I have tried setting the height to 100% and that did not work either, any ideas on what might be causing this?</p>