Android组装json数据

StringBuilder json = new StringBuilder();			json.append('[');			for(Video video : videos){ // {id:76,title:"xxxx",timelength:80}				json.append('{');				json.append("id:").append(video.getId()).append(',');				json.append("title:\"").append(video.getTitle()).append("\",");				json.append("timelength:").append(video.getTime());				json.append('}').append(',');			}			json.deleteCharAt(json.length()-1);			json.append(']');