android 图文按钮

/**
     * 设置图文按钮
     * @param drawable  图片drawable 
     * @param button   按钮
     * @param str  显示文字
     */
    public static void setImageButton(int drawable, final Button button, String str){
        ImageGetter imageGetter = new Html.ImageGetter() {
            
            @Override
            public Drawable getDrawable(String source) {
                Drawable drawable = null;
                drawable = button.getResources().getDrawable(Integer.parseInt(source));
                drawable.setBounds(0, 0, drawable.getIntrinsicWidth(),drawable.getIntrinsicHeight());
                return drawable;
            }
        };
        StringBuffer sb = new StringBuffer();
        sb.append("<img src=\"").append(drawable).append("\"/>").append("<font color=\"6f6f6f\">&nbsp;").append(str).append("</font>");  
        Spanned span2 = Html.fromHtml(sb.toString(), imageGetter, null);  
        button.setText(span2);  
        sb = null;
    }