如何隐藏 Flutter 中某个数字字符后的字母？

Question

ListTile(
    leading: Icon(FontAwesomeIcons.qrcode,
            size: 50),
    title: Text(record.hes, style: (
                  TextStyle(
                    fontSize: 30,
                    color: Color(0xFF545F61),
                  )
                ),),
    subtitle: Text(record.name + " " + record.sname, style: (
                  TextStyle(
                    fontSize: 20,
                    color: Color(0xFF545F61),
                  )
                ),),
    onTap: () => print(record.tc),
  ), 

我有一个这样的listTile。 当我显示名字和姓氏时，我想在前 2 个字符之后隐藏。 Like name: "mi**" and sname: "ly***" for name:"mike" and sname:"lynch" 注意：我从 firebase 中获取这些记录。

Answer 1

也许你可以试试这个

record.name.replaceRange(2, record.name.length, "*" * (record.name.length - 2))
// or 
record.sname.replaceRange(2, record.sname.length, "*" * (record.sname.length - 2))

Answer 2

尝试这个

int visibleCharacters = 2;

var hiddenName = record.name.substring(0, visibleCharacters) + 
                ('*' * (record.name.length - visibleCharacters));

var hiddenSurname = record.sname.substring(0, visibleCharacters) +
                  ('*' * (record.sname.length - visibleCharacters));