iOS - could not launch ''XX", XX iphone/ipad has denied the launch request
iphone/ipad has denied the launch request是在调试时突然出现的问题，在网上查询之后，解决方案主要如下：
1. code sign的问题，重新配置signing，重新选一下Automatically manage signing；
2. building configuration的模式与证书不匹配，scheme - edit scheme - run -building configuration - debug；
3.网友提示方法：Target —— Capabilities ——App Groups（20190416更新）
4. 重启设备；
https://stackoverflow.com/questions/45421179/xcode-beta-error-iphone-has-denied-the-launch-request
http://blog.csdn.net/fydevelop/article/details/78921563
