Android - Spannable:无法一次设置多个跨度

Question

我使用以下代码在同一字符串的多个subStrings上设置颜色范围。

fun getColoredText(text: String, @ColorInt color: Int, vararg coloredSubText: String): Spannable {

        val spannable = SpannableString(text)

        for (textToColor in coloredSubText) {

            val start = text.indexOf(textToColor)

            spannable.setSpan(
                ForegroundColorSpan(color),
                start,
                start + textToColor.length - 1,
                Spannable.SPAN_EXCLUSIVE_EXCLUSIVE
            )
            spannable.

        }

        return spannable
    }

我提供以下论据：

getColoredText("This is my full length of the string", someColorValue, "my", "length")

但"my full length of the string"之后的一切都会变色。有没有人能帮我找出上面的方法有什么问题？

谢谢

Answer 1

上面的代码很好用。问题是我试图用颜色来设置spannable的可点击跨度。并且可点击的跨度覆盖其他颜色。设置方法如下：

fun getClickableTextWithColor(spannable: Spannable, clickableText: String, @ColorInt color: Int, onClickListener: (View) -> Unit): Spannable {
        val text = spannable.toString()

        val start = text.indexOf(clickableText)
        spannable.setSpan(
            object : ClickableSpan() {
                override fun onClick(widget: View) {
                    onClickListener.invoke(widget)
                }

                override fun updateDrawState(ds: TextPaint) {
                    super.updateDrawState(ds)
                    ds.color = color
                }
            },
            start,
            start + clickableText.length,
            Spannable.SPAN_EXCLUSIVE_EXCLUSIVE
        )
        return spannable
    }