对文本进行部分着色并使其在 Jetpack Compose 中可单击

Question

对于 XML 中声明的视图，我们可以使用SpannableStringBuilder此处提到的/sf/answers/342818871/ 来为部分字符串着色。

但是使用 JetPack compose，Text我无法仅使用单个Text.

我想要这样的东西。

正如您所看到的，只有“注册”文本具有不同的颜色，而且我想让它可点击。

这就是我的文本代码目前的样子

Text(text = "Don't have an account? Sign Up",
                        modifier = Modifier.align(Alignment.BottomCenter),
                        style = MaterialTheme.typography.h6,
                        color = MaterialTheme.colors.secondary,
                    )

这在jetpack compose中可能吗？

Answer 1

因此，在 @CommonsWare 的评论和Compose 文档AnnotatedString的帮助下，我成功地使用&创建了相同的内容ClickableText。注释是内嵌添加的，以便任何人都可以理解。

@Composable
fun AnnotatedClickableText() {
    val annotatedText = buildAnnotatedString {
        //append your initial text
        withStyle(
            style = SpanStyle(
                color = Color.Gray,
            )
        ) {
            append("Don't have an account? ")

        }

        //Start of the pushing annotation which you want to color and make them clickable later
        pushStringAnnotation(
            tag = "SignUp",// provide tag which will then be provided when you click the text
            annotation = "SignUp"
        )
        //add text with your different color/style
        withStyle(
            style = SpanStyle(
                color = Color.Red,
            )
        ) {
            append("Sign Up")
        }
        // when pop is called it means the end of annotation with current tag
        pop()
    }

    ClickableText(
        text = annotatedText,
        onClick = { offset ->
            annotatedText.getStringAnnotations(
                tag = "SignUp",// tag which you used in the buildAnnotatedString
                start = offset,
                end = offset
            )[0].let { annotation ->
                //do your stuff when it gets clicked
                Log.d("Clicked", annotation.item)
            }
        }
    )
}