android - 使 SpannableStringBuilder 的多个部分加粗

Question

我试图在 TextView 中获取一个字符串，它应该如下所示:

BOLD not bold BOLD not bold

我试过这个代码:

val builder = SpannableStringBuilder()
val boldSpan = StyleSpan(Typeface.BOLD)
val spanFlag = Spannable.SPAN_EXCLUSIVE_EXCLUSIVE

builder.append("BOLD ", boldSpan, spanFlag)
builder.append("not bold ")
builder.append("BOLD ", boldSpan, spanFlag)
builder.append("not bold ")

return builder

问题是它只加粗了最后一部分。结果如下所示:

BOLD not bold BOLD not bold

有没有办法使用 SpannableStringBuilder 将多个部分加粗？

Answer 1

使用两个不同的跨度:

val builder = SpannableStringBuilder()
val spanFlag = Spannable.SPAN_EXCLUSIVE_EXCLUSIVE

builder.append("BOLD ", StyleSpan(Typeface.BOLD), spanFlag)
builder.append("not bold ")
builder.append("BOLD ", StyleSpan(Typeface.BOLD), spanFlag)
builder.append("not bold ")

return builder