hashtag.java

public class Hashtag extends ClickableSpan {
  
    public interface ClickEventListener{
        void onClickEvent(String data);
    }

    private ClickEventListener mClickEventListener = null;
    private Context context;
    private TextPaint textPaint;

    public Hashtag(Context ctx){
        super();
        context = ctx;
    }

    public void setOnClickEventListener(ClickEventListener listener){
        mClickEventListener = listener;
    }

    @Override
    public void updateDrawState(TextPaint ds) {
        textPaint = ds;
        ds.setColor(ds.linkColor);
        ds.setARGB(255, 30, 144, 255);
    }

    @Override
    public void onClick(View widget) {
        TextView tv = (TextView) widget;
        Spanned s = (Spanned) tv.getText();
        int start = s.getSpanStart(this);
        int end = s.getSpanEnd(this);
        String theWord = s.subSequence(start + 1, end).toString();
        mClickEventListener.onClickEvent(theWord);
    }
}