makehash.java

    private void setContent(){
        String tag = "";
        int i;
        for(i = 0 ; i <mTagLists.size(); i++){
            tag += "#" + mTagLists.get(i) + " ";
        }

        ArrayList<int[]> hashtagSpans = getSpans(tag, '#');

        SpannableString tagsContent = new SpannableString(tag);

        for(i = 0; i < hashtagSpans.size(); i++){
            int[] span = hashtagSpans.get(i);
            int hashTagStart = span[0];
            int hashTagEnd = span[1];

            Hashtag hashTag = new Hashtag(this);
            hashTag.setOnClickEventListener(new Hashtag.ClickEventListener() {
                @Override
                public void onClickEvent(String data) {
                }
            });

            tagsContent.setSpan(hashTag,
                    hashTagStart,
                    hashTagEnd,
                    0);
        }

        TextView tags_view = (TextView)findViewById(R.id.textview_tag);
        if(tags_view != null) {
            tags_view.setMovementMethod(LinkMovementMethod.getInstance());
            tags_view.setText(tagsContent);
        }
    }

    public ArrayList<int[]> getSpans(String body, char prefix) {
        ArrayList<int[]> spans = new ArrayList<int[]>();

        Pattern pattern = Pattern.compile(prefix + "\\w+");
        Matcher matcher = pattern.matcher(body);

        // Check all occurrences
        while (matcher.find()) {
            int[] currentSpan = new int[2];
            currentSpan[0] = matcher.start();
            currentSpan[1] = matcher.end();
            spans.add(currentSpan);
        }

        return  spans;
    }