给edittext imagespan加点击事件

最新推荐文章于 2022-06-27 15:20:23 发布

转载最新推荐文章于 2022-06-27 15:20:23 发布 · 1.9k 阅读

文章标签：

#image #object #string #go #c

本文介绍了一种方法，通过在Android中使用ClickableSpan使从HTML加载的图片变为可点击状态。具体步骤包括获取ImageSpan对象并为其添加ClickableSpan。

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3 down vote

I've been trying to solve the same problem today and find the solution. To make the image clickable you need to attach a ClickableSpan object to the same range as ImageSpan for your image. When you get your Spanned object from Html.fromHtml() you can go through the set of ImageSpan objects assigned for it and attach additional ClickableSpan object.

Like this:

            ImageSpan[] image_spans = s.getSpans(0, s.length(), ImageSpan.class); 
 
            for (ImageSpan span : image_spans) { 
 
                final String image_src = span.getSource(); 
                final int start = s.getSpanStart(span); 
                final int end = s.getSpanEnd(span); 
 
                ClickableSpan click_span = new ClickableSpan() { 
 
                    @Override 
                    public void onClick(View widget) { 
 
                        Toast.makeText(HtmlImagesTestActivity.this, 
                                "Image Clicked " + image_src, 
                                Toast.LENGTH_SHORT).show(); 
 
                    } 
 
                }; 
 
                ClickableSpan[] click_spans = s.getSpans(start, end, ClickableSpan.class); 
 
                if(click_spans.length != 0) { 
 
                    // remove all click spans 
 
                    for(ClickableSpan c_span : click_spans) { 
                        s.removeSpan(c_span); 
                    } 
 
 
                } 
 
 
                s.setSpan(click_span, start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); 
 
            }