Flutter: Specify ListTile height

Just remove the Expanded Widget to avoid fill the space available and use a parent Container with a fixed height, the same as the itemExtent value:

    Column(
                  children: <Widget>[
                    Container(
                      height: 100.0,
                      child: ListView.builder(
                          scrollDirection: Axis.horizontal,
                          itemExtent: 100.0,
                          itemCount: temp.length,
                          itemBuilder: (BuildContext context, int index) {
                            return ListTile(
                                title: Text(temp[index]),
                                onTap: () {
                                  print(temp[index]);
                                });
                          }),
                    ),
                    Container(
                      child: Text('data'),
                    )
                  ],
                ),

Add this one itemExtent in your ListView Properties, itemExtent defines the size of each child. like this ⬇️

 ListView.builder(
  scrollDirection: Axis.vertical,
  shrinkWrap: true,
  itemCount: 5,
  itemExtent: 50,
  itemBuilder: (context, index) { 
    return TistTile()
  }
 )

And Implementation this one dense:true, in your ListTile Properties, The dense parameter makes the text smaller and packs everything together. like this ⬇️

  ListTile(
   title: Text("Tony Stark"),
   subtitle: Text("list[index].name",
        style: TextStyle(fontSize: 14.0),),
   contentPadding: EdgeInsets.symmetric(vertical: 0.0, horizontal: 
        16.0),
   dense:true,
   );

You can change how much the content is inset on the left and right (but not the top or bottom) by setting the contentPadding. The default is 16.0 but here we will set to 0.0:

You should use a Container or Padding instead of ListTile if you need more customization.

You cannot set the height, but you can make it smaller by setting the dense property to true:

ListView.builder(
          scrollDirection: Axis.vertical,
          shrinkWrap: true,
          itemCount: list.length,
          itemBuilder: (context, index) {
            return ListTile(
              title: Text(list[index].name,style: TextStyle(fontSize: 20.0),),
              contentPadding: EdgeInsets.symmetric(vertical: 0.0, horizontal: 16.0),
              dense:true,                  
            );
          },
        );

ListTile:

A single fixed-height row that typically contains some text as well as a leading or trailing icon.

To be accessible, tappable leading and trailing widgets have to be at least 48x48 in size. However, to adhere to the Material spec, trailing and leading widgets in one-line ListTiles should visually be at most 32 (dense: true) or 40 (dense: false) in height, which may conflict with the accessibility requirement.

For this reason, a one-line ListTile allows the height of leading and trailing widgets to be constrained by the height of the ListTile. This allows for the creation of tappable leading and trailing widgets that are large enough, but it is up to the developer to ensure that their widgets follow the Material spec.

https://api.flutter.dev/flutter/material/ListTile-class.html