APP崩溃提示：This application is modifying the autolayout engine from a background thread after the engine was accessed from the main thread. This can lead to engine corruption and weird crashes.

崩溃输出日志

2017-08-29 14:53:47.332368+0800 HuiDaiKe[2373:1135604] This application is modifying the autolayout engine from a background thread after the engine was accessed from the main thread. This can lead to engine corruption and weird crashes.2017-08-29 14:53:47.332368+0800 HuiDai