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androidhyperlinktextview

Android TextView with Clickable Links: how to capture clicks?


I have a TextView which is rendering basic HTML, containing 2+ links. I need to capture clicks on the links and open the links -- in my own internal WebView (not in the default browser.)

The most common method to handle link rendering seems to be like this:

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 ) );

However, this causes the links to open in the default internal web browser (showing the "Complete Action Using..." dialog).

I tried implementing a onClickListener, which properly gets triggered when the link is clicked, but I don't know how to determine WHICH link was clicked...

text_view.setOnClickListener(new OnClickListener(){

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

});

Alternatively, I tried creating a custom LinkMovementMethod class and implementing 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;
}

Ideas?


Example solution

I came up with a solution which parses the links out of a HTML string and makes them clickable, and then lets you respond to the URL.


Solution

  • Based upon another answer, here's a function setTextViewHTML() which parses the links out of a HTML string and makes them clickable, and then lets you respond to the 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());       
    }