自定义link click

最新推荐文章于 2023-10-26 10:06:24 发布

原创最新推荐文章于 2023-10-26 10:06:24 发布 · 1.2k 阅读

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CC 4.0 BY-SA版权

本文介绍了一种使用自定义 MyLinkify 类扩展 Android 中 Linkify 的方法，通过创建 URLSpan 的子类 MyURLSpan 来实现点击事件的自定义处理。文章详细展示了如何清除原有的 URLSpan 并替换为自定义的 ClickableSpan。

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1. MyLinkify extends Linkify, add custom sub class of URLSpan to addLinks. Use MyLinkify to apply span to string or textview.

2. If textview is linkable, get all URLSpan from the Spannable text. Use the URLSpan to construct you custom ClickableSpan.
example:

TextView tv =(TextView)this.findViewById(R.id.textview);        
CharSequence text = tv.getText();
        if(text instanceof Spannable){
            int end = text.length();
            Spannable sp = (Spannable)tv.getText();
            URLSpan[] urls=sp.getSpans(0, end, URLSpan.class); 
            SpannableStringBuilder style=new SpannableStringBuilder(text);
            style.clearSpans();//should clear old spans
            for(URLSpan url : urls){
                MyURLSpan myURLSpan = new MyURLSpan(url.getURL());
                style.setSpan(myURLSpan,sp.getSpanStart(url),sp.getSpanEnd(url),Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
            }
            tv.setText(style);
        }


private static class MyURLSpan extends ClickableSpan{

        private String mUrl;
        MyURLSpan(String url) {
            mUrl =url;
        }

        @Override
        public void onClick(View widget) {
          //do what you want with the mUrl
        }
 }