ios 编译成功后,白屏报错。 <img width="1378" alt="WeChat52929d5987844425e8b4cf2dcc9f5f8b" src="https://user-images.githubusercontent.com/42814626/90501472-ffaedc00-e17e-11ea-95a5-dccf4a4ef139.png"> <img width="1076" alt="WeChated7c95b6d23bde9ff651049ac9b43b69" src="https://user-images.githubusercontent.com/42814626/90501535-18b78d00-e17f-11ea-9b89-d541ec1ee3e1.png">