????1. Appium?????????AndroidCommand
????AndroidCommand??????????????????????Appium??pc?????????????json???????????????????????????????
????JSONObject         json;
????AndroidCommandType cmdType;
????json??pc??????json????????????cmdType??action????shutdown??????????????????α?????????????????????????????????????????????????getType??????????json????????????AndroidCommandType??????????????????AndroidCommandParser?????
??????????????????AndroidCommand?????????????????????н???????????????????????????????????????????????????

????????е???Щ??????????????????????????????????????????????appium??pc??????????json?????