Android:添加“内部"链接到TextView的一部分，该链接链接到我的代码中的操作 [英] Android: add "internal" links to part of a TextView, that links to action in my code

问题描述

正如标题所说明的，我想添加指向我的TextView的链接，并附带以下两个警告:

As the title explains, I'd like to add links to my TextView, with these two caveats:

• 我希望链接作用于TextView的一部分，而不是完整的链接(类似于HTML中的A锚点).

• I want the link to act on a part of the TextView, not the full one (something like an A anchor in HTML).

我希望链接指向代码中的操作，而不是网站.我可以在自己的活动中定义一个方法，或者实现一个OnClickListener，然后在单击该特定链接时执行该方法.

I want the link to point to an action in my code, not a website. I could define a method in my activity, or implement an OnClickListener, and execute that when that specific link is clicked.

到目前为止，我已成功使用以下方法将电话号码，地址，网站和电子邮件转换为专用的外部链接:

So far, I succeeded to turn phone numbers, addresses, web sites and emails into dedicated external links using:

Linkify.addLinks(message, Linkify.ALL);

我想要内部链接(到我的方法)类似的东西，并且可以定义自定义链接.

I'd like something similar for internal links (to my method), with the possibility to define custom ones.

而且，使用带有内部链接和Web视图的网页并不是一个真正的选择，因为我已经定义了几个复杂的布局，并且不得不修改整个应用程序和概念会很痛苦...

Also, using a web page with internal link and a web view is not really an option, as I already have several complex layouts defined, and having to modify the whole application and concepts would be quite a pain...

有什么主意吗?

Kabuko给了我一个很好的解决方案，这正是我的实现方式:

Kabuko gave me a very good solution, here is exactly how I implemented it:

final TextView descriptionTextView = (TextView) findViewById(R.id.description);
final Spannable span = Spannable.Factory.getInstance().newSpannable("the full text for the view");
span.setSpan(new ClickableSpan() {
    @Override
    public void onClick(View widget) {
        Toast.makeText(StartEventActivity.this, "LINK CLICKED", Toast.LENGTH_SHORT).show();
    }
}, 1, 20, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); // 1 and 20 to be replaced with actual index of start and end of the desired link
descriptionTextView.setText(span);
descriptionTextView.setMovementMethod(LinkMovementMethod.getInstance());

推荐答案

如果您想实际转到URL，则可以使用

If you wanted to actually go to URLs you could use Html.fromHtml, but if you want your own click handlers you can use a ClickableSpan.

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