iOS React Native-操作无法完成。 没有相应的文件和目录

Question

Since yesterday I cannot test my React-Native Apps anymore (not on simulator nor on device). I did uninstall Xcode and re-install. I am testing now with a init AwesomeProject file. Xcode reports "Build Successful" and starts displaying the Launch Screen but then I receive the following message

"[error][tid:main] The operation couldn't be completed. No such file or directory"

and the Simulator includes message

"RCTFatal" and "RCTBatchedBridge stopLoadingWithError"

etc and looks like this: Screenshot of ErrorMessage

Important : I was able to build a clean iOS only Test App whose Build did run successfully.

Answer 1

I also experienced this issue and I think it is the same as is discussed on https://github.com/facebook/react-native/issues/3174 , where the problem concerns IPv4/IPv6.

What worked for me: I put an IPv6 address in AppDelegate.m . This worked for the simulator (iOS 8.4/9.0/9.1) and device (iPhone, iOS 9.1):

• you get your IPv6 address with: ifconfig | grep inet6 | grep -v fe80:: ifconfig | grep inet6 | grep -v fe80::
• in AppDelegate.m surround it with brackets, so that:

jsCodeLocation = [NSURL URLWithString:@"http://[abab:1234:1234:abab:aaaa:bbbb:1111:2222]:8081/index.ios.bundle?platform=ios&dev=true"];

---

A more detailed story, concerning IPv4/6 addresses in AppDelegate.m :

• in simulator:
  • iOS 9.0 and 9.1:
    • IPv4 doesn't work, however a hostname such as localhost does
    • IPv6 works
  • iOS 8.4:
    • IPv4 and IPv6 work
• on device, iPhone with iOS 9.1:
  • IPv4 actually does work for me
  • IPv6 also works

Answer 2

In your AppDelegate.m file, check the following line

jsCodeLocation = [NSURL URLWithString:@"http://localhost:8081/index.ios.bundle?platform=ios&dev=true"];

If the path is not set to localhost , the emulator won't work. If you want to run the app in your phone, have your IP address instead of localhost.