Grid

When to use

Use a grid to show a set of elements which can best be represented graphically (as images with or without text), such as a gallery of pictures or video thumbnails, or the content of a store.

For elements that are better represented by text, use a List.

How to use

Make sure that the list items are big enough and there is enough padding between them for users to easily tap items
Accompany images with a textual label if there is a chance that certain elements may be easier to recognize by their text than their graphical representation
If a grid is populated from an online source, use the "Pull to refresh" feature that allows users to update it simply by pulling it down beyond the first (i.e. newest) grid item

Implementation

Use a GridView within a Page or ScrollablePage (if the grid can contain more elements than fit on the screen) to implement this pattern
Set supportsRefreshing: true on the ScrollablePage to allow "Pull to refresh"