material_color_picker

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void _openFullMaterialColorPicker() async {
    _openDialog(
      "Renk seç",
      MaterialColorPicker(
        colors: materialColors,
      ),
    );
  }

  void _openDialog(String title, Widget content) {
    showDialog(
      context: context,
      builder: (_) {
        return AlertDialog(
          contentPadding: const EdgeInsets.all(6.0),
          title: Text(title),
          content: content,
          actions: [
            FlatButton(
              child: Text('İptal'),
              onPressed: Navigator.of(context).pop,
            ),
            FlatButton(
              child: Text('Kaydet'),
              onPressed: () {
                Navigator.of(context).pop();
              },
            ),
          ],
        );
      },
    );
  }