my datatable in flutter from json repeat the column headers
To remove the repeated column headers in a DataTable in Flutter from JSON, you can use the DataTableSource
class and override the buildHeader
method to return null for the second occurrence of the headers. Here's an example:
class MyDataTableSource extends DataTableSource {
List<Map<String, dynamic>> data = [
// Your JSON data here
];
@override
DataRow? getRow(int index) {
// Return the DataRow for each row in the DataTable
return DataRow(cells: [
DataCell(Text(data[index]['column1'])),
DataCell(Text(data[index]['column2'])),
// Add more DataCells for each column in your JSON data
]);
}
@override
bool get isRowCountApproximate => false;
@override
int get rowCount => data.length;
@override
int get selectedRowCount => 0;
@override
DataColumn? getRowHeader(int index) {
// Return null for the second occurrence of the headers
if (index == 0) {
return DataColumn(label: Text('Column 1'));
} else if (index == 1) {
return DataColumn(label: Text('Column 2'));
}
// Add more conditions for each column header
return null;
}
}
// Usage:
DataTable(
source: MyDataTableSource(),
columns: [
DataColumn(label: Text('Column 1')),
DataColumn(label: Text('Column 2')),
// Add more DataColumns for each column in your JSON data
],
)
This code creates a custom DataTableSource
class called MyDataTableSource
that handles the data for the DataTable. The getRow
method returns the DataRow for each row in the DataTable, and the getRowHeader
method returns the DataColumn for each column header. By returning null for the second occurrence of the headers, you can remove the repeated column headers in the DataTable.
Please note that you need to replace the data
list with your actual JSON data and add more DataCell
and DataColumn
widgets for each column in your JSON data.
I hope this helps! Let me know if you have any further questions.