Flutter display data from List once if data is repeated-CodePudding

I am fetching data from a database, and let's say the fetched data then return a list which contains List fetchedData = [2, 4, 6, 1, 2, 5, 2], I then want to display the data with a ListView.builder as so

return ListView.builder(
    itemCount: fetchedData.length,
    itemBuilder: (context, index) {
      return Text(
        fetchedData[index],
      );
    },
  ),

But the list contains the number 2 more than once, so the number 2 would in this case be displayed three times, but I would only want to display it once, is this possible?

CodePudding user response：

Try to create a Set from your list, like

var fetchedSet = Set.from(fetchedData);

then iterate like

return Text(
fetchedSet.elementAt(index)
);