Launch React-Native apps with fbsimctl on multiple devices

Question

Thanks to fbsimctl we can launch multiple iOS simulators running multiple iOS-versions at the same time. Any ideas how to launch ReactNative-projects on all iOS-simulators simultanously?

When i launch the app with " react-native run-ios " it will only appear on the very first simulator that was launched. When i launch via XCode all other simulators will shutdown automatically except this one that was selected in the XCode launch-bar.

In the README is stated the command:

fbsimctl launch com.facebook.someapp

I replaced the app-id to mine and it did not help, but will output something like:

Error Domain=com.facebook.FBSimulatorControl Code=0 "App com.myown.appid can't be launched as it isn't installed"

It is also mentioned to call

fbsimctl install Someapp.app

I tried it with an exported IPA directly out of XCode. It produces:

Error Domain=com.facebook.FBSimulatorControl Code=0 "Could not determine Application information for path /private/var/folders/cj/c_zjt5x12ps_6q93t023qc4w0000gn/T/61863B0A-89D3-4002-ACC4-D31EC256BA50-70447-0000472A108998F9/Payload/XXXXXX.app" UserInfo={NSLocalizedDescription=Could not determine Application information for path /private/var/folders/cj/c_zjt5x12ps_6q93t023qc4w0000gn/T/61863B0A-89D3-4002-ACC4-D31EC256BA50-70447-0000472A108998F9/Payload/XXXXXX.app

Has anyone used it? For android i find it very usefully being able to launch several different simulators and launch the app with only one command on all these "devices".

Answer 1

fbsimctl install Someapp.app To use this command, you must have a build of your app for the simulator (.app file). You can create it via Xcode or via command line (use as target iOS Simulator)

It's preferable to start with simulators and .app, because using real devices and .ipa is much more complicated because of the profiling