楼主看下这个~
http://info.3g.qq.com/g/s?pageNo=1&totalIndex=2&f_aid_ext=210,article&iarea=210&srcTopic=104001000&srcDocId=&srcId=tech_20170706057837&aid=qqom_ss&docId=3781983060&id=qqom_20170704A07ZYL&f_l=1110&topic=104001000&sourceType=info&articleType=1090531&ab=1