running on my device used to work fine. However, suddenly,
when I run react-native run-ios --device,
I get to the ending like
[[ true != true ]]
** BUILD SUCCEEDED **
installing and launching your app on User’s iPhone...
However, nothing happens after and the app does not get installed in my device.
For me the following worked a while back when I faced a similar issue:
>npm install -g ios-deploy
>react-native run-ios --device "My iPhone"
I seriously offer you to install ios-deploy by using brew:
brew install ios-deploy
If you installed it by npm before installing by brew uninstall it by the following command:
sudo npm uninstall -g ios-deploy
After having the correct version with the correct installation plug your device and then run the below command:
npx react-native run-ios --device
This current command directly installs the app on the first plugged device to your macOS system. if you plugged several devices then you should pass the name of a targeted device just like below:
npx react-native run-ios --device "DeviceName"
Related
Screenshot of npx react-native doctor:
As you can see, the iOS is all green ticks. I npm start in a terminal tab to run react native metro server. I then open another terminal and npm run ios Yes, the simulator opens straight away, but then I get a long error: https://pastebin.com/6bFTMDTr
I cd ios then pod install and got this:
Anyone have any idea?
Have you tried installing the pod dependency manually?
$ cd iOS && pod install
upd.
Looks like you haven't installed Ruby
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
brew install ruby
echo 'export PATH="/usr/local/opt/ruby/bin:$PATH"' >> ~/.bash_profile
source ~/.bash_profile
after that install a watchman depend
$ brew update
$ brew install watchman
upd2.
1) brew reinstall cocoapods
(error message will come up regarding linking)
2) brew link --overwrite cocoapods
(to fix the link)
When I run the command "yarn start", the expo web starts automatically, and even if I open the expo client app on my iPhone the link on my app takes me to Safari and opens up a webpage. How can I open the app on expo CLI and not on my phone's browser (Safari)?
I have also tried the command "expo start --ios" and when I run it I get the error
"Simulator not installed. Please visit
https://developer.apple.com/xcode/download/ to download Xcode and the
iOS simulator. If you already have the latest version of Xcode
installed, you may have to run the command sudo xcode-select -s /Applications/Xcode.app".
I don't want to run the app on a simulator or phone's browser instead on my phone using expo client
I was dealing with this issue also hoping someone would find a solution. However, I have found the solution that worked for me at least. What I did is installed the react-native cli (reinstall if already installed) and then ran npm install in my project and it went back to normal and stopped going on my phones browser. Search documentation regarding this to install those things. I installed them in the order stated and it worked.
try update your expo-cli version and see if it helps. npm install -g expo-cli
Below is my situation,
By default Expo uses yarn. I installed any new dependencies using npm, then by default expo is built with web.
Solution:
use yarn always to install new dependencies or
use npm install once to install and now expo will build project with android or ios
On Linux try with sudo:
sudo npm install -g expo-cli
Then install packages and run:
yarn
Then run the following to clear cache and start expo:
expo start -c
This issue usually happens when you install a new npm package. You can either uninstall/reinstall the package or run the above three steps and solve your problem.
I have been working with react-native project in another pc and it has been working correctly. Now I cloned project to another device where I have react-native installed since I work with other project and I cannot run it.
When I run react-native run-android I get this error:
Cannot run program "npx": error=2, No such file or directory
I'm using Android Studio 4 on Mac OS Catalina 10.15.6.
I solved the problem by running Android Studio with bellow command on console.
$ open -a "Android Studio.app"
Simple steps you need to go through to make it work with npx
sudo npm uninstall -g react-native-cli
sudo npm i -g npx
npx react-native run-android
More detailed explanation why this is happenig
Issue was that Facebook is not using anymore react-native-cli as they are using npx.
As stated in Facebook page:
If you previously installed a global react-native-cli package, please remove it as it may cause unexpected issues.
So i had to run sudo npm uninstall -g react-native-cli to remove react-native-cli
They also say that npx is shipped with nodejs but that wasn't my case.
React Native has a built-in command line interface, which you can use to generate a new project. You can access it without installing anything globally using npx, which ships with Node.js.
So I had to install it using sudo npm i -g npx
After installing npx then just need to run npx react-native run-android.
Be aware of npx before react-native run-android
Now you don't have any command react-native now we only have 'npx' and react-native run-android is just a parameter for npx. For ex. to start metro we should run npx react-native start
I had the same issues, so I followed these steps:
Start by installing the latest version of Android Studio (Don't delete the old version, just copy paste that to another directory or in my case I just added the Android Studio 3.2.1 that I had to a folder called olderAndroidStudio, on mac).
Make sure you don't click on import settings from Existing.
Follow along the installation, and complete it.
Build and Run, app runs without any problems.
I additionally uninstalled react-native-cli using the method given in the accepted answer.
In my case, I just quit Android Studio and reopened, and the error was gone.
Maybe throw in a ./gradlew clean for goo measure.
I solved it by finding the command that was throwing error and ran it directly
node -e "console.log(require('react-native/cli').bin)"
which outputs a path, something like
$HOME/my-app/node_modules/#react-native-community/cli/build/bin.js
then I pasted that path in android/app/build.gradle
project.ext.react = [
entryFile: "index.js",
enableHermes: true, // clean and rebuild if changing
cliPath: "$HOME/my-app/node_modules/#react-native-community/cli/build/bin.js" // <--- add this
]
i have a problem with react native in ubuntu, i have installed,
java jdk 8 (both javac --version) as well as echo $JAVA_HOME gives the proper output.
I have also installed android studio and set the android environment variables as well as the tools and echo $ANDROID_HOME gives output of the sdk location.
I have also installed gradle version 4.4.
I am unable to start the android app using react-native run-android. can any one let me know if i have missed something during installation.
And react-native as well as android studio works fine as I am currently using react-native start to start the metro builder as well as the other react-native cli commands. also android studio and gradle is also able to generate debug as well as release apks with no problems.
The error i get,
Scanning folders for symlinks in /home/igate-naveed/Documents/ReactNative/mobile-app-android/node_modules (16ms)
Starting JS server...
Building and installing the app on the device (cd android && ./gradlew installDebug)...
Could not install the app on the device, read the error above for details.
Make sure you have an Android emulator running or a device connected and have
set up your Android development environment:
https://facebook.github.io/react-native/docs/getting-started.html
First of all you need to create a project like this:
react-native init myProjectName
Then, start an emulator from Android Studio... Afterwards:
npm install && npm start
in your project directory, and from another terminal, inside your project directory, run :
react-native run-android
Is this working?
Instead of using the npm install manager, I used yarn and it worked for me. In your project directory, just do:
(project-directory)$ yarn
Update the gradle version.
Create new project:
react-native init projectname
Uninstall the npm pack.
Reinstall the npm pack again.
npm start
react-native start
react-native run-android
I have followed guide here to setup react-native 0.23 https://facebook.github.io/react-native/docs/getting-started.html#content
I tried to run
react-native run-android
and got the following
Looks like you installed react-native globally, maybe you meant
react-native-cli? To fix the issue, run: npm uninstall -g react-native
npm install -g react-native-cli
and I tried above command to uninstall and install but still getting the samething.
I google and found some solution at Packager won't start
Tried:
"scripts": {
"start": "$NVM_BIN/react-native start"
}
and
react-native start
both still didn't work. For iOS no problem as I fired up XCode to run it. I have also installed VirtualBox and Genymotion as emulator.