如何隱藏 Flutter 中某個數字字符后的字母？

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),
  ), 

我有一個這樣的listTile。 當我顯示名字和姓氏時，我想在前 2 個字符之后隱藏。 Like name: "mi**" and sname: "ly***" for name:"mike" and sname:"lynch" 注意：我從 firebase 中獲取這些記錄。

Answer 1

也許你可以試試這個

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

嘗試這個

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));