带可点击链接的Android TextView:如何捕捉点击?

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我有一个TextView,它呈现基本的HTML,包含2+链接。我需要捕获点击链接并打开链接 - 在我自己的内部WebView中(不在默认浏览器中)。

处理链接呈现最常见的方法似乎是这样的:

String str_links = "<a href='http://google.com'>Google</a><br /><a href='http://facebook.com'>Facebook</a>";
text_view.setLinksClickable(true);
text_view.setMovementMethod(LinkMovementMethod.getInstance());
text_view.setText( Html.fromHtml( str_links ) );

我尝试实现一个onClickListener,当链接被点击时它会被正确触发,但我不知道如何确定哪个链接被点击了:

text_view.setOnClickListener(new OnClickListener(){

    public void onClick(View v) {
        // what now...?
    }

});

或者,我试着创建一个自定义LinkMovementMethod类并实现onTouchEvent :

public boolean onTouchEvent(TextView widget, Spannable text, MotionEvent event) {
    String url = text.toString();
    // this doesn't work because the text is not necessarily a URL, or even a single link... 
    // eg, I don't know how to extract the clicked link from the greater paragraph of text
    return false;
}

提问于
用户回答回答于

下面是一个函数setTextViewHTML(),它解析HTML字符串中的链接并使它们可点击,然后让你响应URL:

protected void makeLinkClickable(SpannableStringBuilder strBuilder, final URLSpan span)
{
    int start = strBuilder.getSpanStart(span);
    int end = strBuilder.getSpanEnd(span);
    int flags = strBuilder.getSpanFlags(span);
    ClickableSpan clickable = new ClickableSpan() {
        public void onClick(View view) {
            // Do something with span.getURL() to handle the link click...
        }
    };
    strBuilder.setSpan(clickable, start, end, flags);
    strBuilder.removeSpan(span);
}

protected void setTextViewHTML(TextView text, String html)
{
    CharSequence sequence = Html.fromHtml(html);
    SpannableStringBuilder strBuilder = new SpannableStringBuilder(sequence);
    URLSpan[] urls = strBuilder.getSpans(0, sequence.length(), URLSpan.class);   
    for(URLSpan span : urls) {
        makeLinkClickable(strBuilder, span);
    }
    text.setText(strBuilder);
    text.setMovementMethod(LinkMovementMethod.getInstance());       
}
用户回答回答于

我也通过HTTP响应获取了一些数据,并且在我的例子中添加了一些额外的带下划线的文字“more”,这个带下划线的文本将在click事件中打开Web浏览器:

TextView decription = (TextView)convertView.findViewById(R.id.library_rss_expan_chaild_des_textView);
String dec=d.get_description()+"<a href='"+d.get_link()+"'><u>more</u></a>";
CharSequence sequence = Html.fromHtml(dec);
SpannableStringBuilder strBuilder = new SpannableStringBuilder(sequence);
UnderlineSpan[] underlines = strBuilder.getSpans(0, 10, UnderlineSpan.class);   
for(UnderlineSpan span : underlines) {
    int start = strBuilder.getSpanStart(span);
    int end = strBuilder.getSpanEnd(span);
    int flags = strBuilder.getSpanFlags(span);
    ClickableSpan myActivityLauncher = new ClickableSpan() {
        public void onClick(View view) {
            Log.e(TAG, "on click");
            Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(d.get_link()));
            mContext.startActivity(intent);         
        }
    };
    strBuilder.setSpan(myActivityLauncher, start, end, flags);
}
decription.setText(strBuilder);
decription.setLinksClickable(true);
decription.setMovementMethod(LinkMovementMethod.getInstance());

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