解决 点击UITextField就会出现以下警告

1.点击TextField出现[MC] System group Container for systemgroup.com.apple.configurationprofiles path is /Users/zjn-apple/Library/Developer/CoreSimulator/Devices/F57050BE-7D57-48DD-A8FA-23CD8C16FEF9/data/Containers/Shared/SystemGroup/systemgroup.com.apple.configurationprofiles，解决方法如下：

从xcode菜单中：Product > Scheme > Edit Scheme
Environment Variables 添加一栏name：OS_ACTIVITY_MODE  Value:disable