You shall change the input json source by converting the bit value to the Male/Female Value.
var input = [{ Name: 'xx', Gender: 0 },
{ Name: 'xx', Gender: 0 },
{ Name: 'xx', Gender: 0 },
{ Name: 'xx', Gender: 1 },
{ Name: 'xx', Gender: 1 },
{ Name: 'xx', Gender: 1 }];
for (var i = 0; i < input.length; i++) {
input[i].GenderValue = input[i].Gender ? "Male" : "Female";
}
and the header config as
{ header: 'Gender', dataIndex: 'GenderValue', width: 180, type: 'String'},