Flutter Gridview in Column. What’s solution..?

You just need to put your grid view into Expanded widget, for example:

body: new Column(
  children: <Widget>[
    new Expanded(
      child: GridView.count(
        // Create a grid with 2 columns. If you change the scrollDirection to
        // horizontal, this would produce 2 rows.
        crossAxisCount: 2,
        // Generate 100 Widgets that display their index in the List
        children: List.generate(10, (index) {
          return _buildCard(index);
        }),
      ),
    ),
    new Text("text")
  ],
),