如何在android中实现多种样式的文本编辑？

SpannableStringBuilder builder = new SpannableStringBuilder();

// 添加普通文本
builder.append("Hello, ");

// 添加带颜色的文本
String coloredText = "World!";
SpannableString coloredSpannable = new SpannableString(coloredText);
coloredSpannable.setSpan(new ForegroundColorSpan(Color.RED), 0, coloredText.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
builder.append(coloredSpannable);

// 添加带下划线的文本
String underlinedText = " Welcome!";
SpannableString underlinedSpannable = new SpannableString(underlinedText);
underlinedSpannable.setSpan(new UnderlineSpan(), 0, underlinedText.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
builder.append(underlinedSpannable);

// 设置TextView显示样式化的文本
TextView textView = findViewById(R.id.textView);
textView.setText(builder);