[React Native iOS真机运行输出]Could not connect to development server.

Could not connect to development server. Ensure the following:

- Node server is running and available on the same network - run ‘npm start’ from react-native root

- Node server URL is correctly set in AppDelegate

URL: http://localhost:8081/index.ios.bundle?platform=ios&dev=true

解决办法：

1.把AppDelegate.m里面的localhost改为你Mac的IP地址（获取方式：系统偏好设置-网络）。

2.确定你的Mac和手机连接的是同一个网络。