Android:如何将 Spannable.setSpan 与 String.format 结合起来? [英] Android: How to combine Spannable.setSpan with String.format?
问题描述
我将 Span 设置为文本的一部分.Span 本身运行良好.但是，文本是由 Resources 中的 String.format 创建的，我不知道 start 和 end 的部分我要将 Span 设置为的文本.
I'm setting Span to part of text. Span itself works well. However the text is created by String.format from Resources and I do not know start and end of part in the text i'm going to set Span to.
我尝试在 strings.xml 中使用自定义 HTML 标记，但 getText 或 getString 将它们删除.我可以使用这样的getString(R.string.text, "<nb>" + arg + "</nb>")，然后Html.fromHtml()，因为 arg 正是我想要设置跨度的地方.
I tryed to use custom HTML tags in strings.xml, but either getText or getString remove them. I could use something like this getString(R.string.text, "<nb>" + arg + "</nb>"), then Html.fromHtml(), because the arg is exactly where i want to set the Span.
我看到这种方法使用文本格式普通文本##span here##普通文本".它解析字符串，删除标签并设置 Span.
I seen this approach that used text formated "normal text ##span here## normal text". It parses the string removes tags and sets Span.
我的问题是，有没有更好的方法可以将 Span 设置为像 "something %s something" 这样的格式化字符串，还是应该使用上述方法之一?
My question is, is there better way to accomplish setting Span into formated string like "something %s something" or should i use one of the above approaches?
推荐答案
我通过引入 TaggedArg 类解决了这个问题，这个类的实例扩展为
I solved this by introducing TaggedArg class, instances of this class expands to <tag>value</tag>. Then I created object that is responsible for reading text containing tags and replacing these tags by spans. Different spans are registered in map tag->factory.
有一个小惊喜.如果您有类似 " 的文本，Html.fromHtml 将此文本读作 "/xx>".我不得不在整个文本周围添加标签 以防止这种情况发生.
There was one little surprise. If you have text like "<xx>something</xx> something", Html.fromHtml reads this text as "<xx>something something</xx>". I had to add tags <html> around whole text to prevent this.
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