椭圆化仅TextView中的一个部分

TextView textView = findViewById(R.id.textView);
String originalText = "这是一个敏感信息：1234567890";
String maskedText = "******7890";
String maskedString = originalText.replaceAll(".(?=.{4})", "*");
textView.setText(maskedString);

let originalText = "这是一个敏感信息：1234567890"
let maskedText = "******7890"
let maskedString = originalText.replacingCharacters(in: Range(NSRange(location: 0, length: 10)!, in: originalText), with: "******7890")
label.text = maskedString