Android组建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(']');