React Native：我可以在iOS模拟器上运行应用程序，但不能在真实设备上运行

Question

I changed my computer recently, so I just downloaded my github repo again. When I decided to run the app on my device I got the red screen telling me No bundle URL present.

Once (a long time ago) I could not run the project, so I first run it on the simulator and then on the device and it worked. But now this is not working. The simulator works fine, but I can't run anything on the device. When I open xcode I see the main.jsbundle in red. I don't know if this is the problem. Also my device is in the same network of my computer.

How can I fix this?

Answer 1

Try below steps:

Step 1: Open command prompt and run below command from project's root location.

react-native bundle --platform ios --dev false --assets-dest ./ios --entry-file index.js --bundle-output ios/main.jsbundle

Step 2: Add below line into AppDelegate.m file's didlaunching method

 jsCodeLocation = [[NSBundle mainBundle] URLForResource:@"main" withExtension:@"jsbundle"];
//jsCodeLocation = [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:@”index” fallbackResource:nil];