React-native run iOS, error unrecognised command run iOS
Info Run "react-native --help" to see a list of all available commands.
These error occur many time
I haven't answer
Please use the right command
react-native run-ios
Instead
React-native run iOS
Related
Following the official documentation in react native firebase/app#15.1.1 it gives me the build failed error for terminal using the npx react-native run-ios and also from xcode builed both failed to build ...Can someone Provide me the installation for react-native firebase/app along with it react-native firebase/messaging and pushnotification/ios ..i am new to react-native Please help...
Since today i having trouble to run project ..commandPrompt throwing an error like this..
E:\FirstProject>npx react-native run-android
error Unrecognized command "run-android".
info Run "react-native --help" to see a list of all available commands.
just open two terminal consoles and run
react-native start
and in the other
react-native run-android
I think npx is only to create the init project with react native cli
https://facebook.github.io/react-native/docs/getting-started
Is there any way to open react native app and simulator using one command..
i mean some thing like : react-native run-android --emulator 'PIXEL_API_27'
i also try :
"scripts": {
"start": "node node_modules/react-native/local-cli/cli.js start",
"android": "react-native run-android --emulator 'PIXEL_API_27'",
"test": "jest"
},
and run command npm run android but its complaining that error: unknown option--simulator'`
i am very new with react native. pls help me ....
There is currently no way to open a terminal by passing additional flags to react-native run-android.
So your problem is two fold. First how to run the emulator from the command line, and second how to chain that command with running your react-native project. Let's deal with them in that order.
Opening the emulator from the command line
It is possible to open an emulator via the command line. that is done with the emulator #avd command, replacing #avd with the name of your android virtual device. For example:
emulator #Nexus_5X_API_27_x86
To get the names of the installed android virtual devices on your machine run emulator -list-avds.
Now that your emulator is running let's get react-native running too.
Running the emulator and then running react-native run-android
I have found one issue with running the emulator from the command line, the emulator command keeps executing meaning that you cannot chain commands using &&. However you can run the emulator terminal in the background, by using & so we can chain the commands in the following way:
emulator #Nexus_5X_API_27_x86 & react-native run-android
If you are happy running the terminal in the background, this could be the solution for you.
For more settings for running the emulator from the command line see the docs
Be warned you may get errors when you try to run the emulator command. The most common that I have come across is the PANIC: Missing emulator engine program for 'x86' CPUS. This may require you to dive into your .bashrc or your .bash_profile to get the emulator command to behave. You can see more here
I just started with react-native.
But I have a problem with the replay of the project. I use the command react-native run-android, this annoys me an error see capture.
The problem was resolution. I almost opened two console: one I compile with
npm start
and the other run
react-native run-android
So this isn't my first react native app but this is the first time i'm getting this error. I get the usual error when running:
react-native run-android --variant=release
Thats ok because I know it doesn't work. However, this one always use to work:
react-native run-android --configuration=release
But it is just stating: error: unknown option--configuration'`
I've had that issue before. I've done everything on the generate a signed APK web page. I can get a non-release but not the release. I even have the APK from: cd android && ./gradlew assembleRelease
Have you recently upgraded your React Native version?
Because the following only works on version 0.39.x
react-native run-android --configuration=release
Else, just use this
react-native run-android --variant=release