when I developed the first app I got error .I'm new to react
please help me to find a solution.
I install npm,node,flow,watchman ,homebrew
Your package server isn't running. This should start automatically when you hit run in xcode, but you can also start it manually. From the project's root, run npm start
Related
I want to build existing react-native app on ios simulator. It shows build is successfull but the App is not launching and crashed the App. It shows the given Error.
Native module can not be null
please someone help me to find out the solution of the given problem. I am getting stuck for long time
Maybe it's because of your dependecies or your node_modules folder, try running npm install or npm i on terminal
Thanks everyone for helping me.
I fix the above problem by uninstalling Push Notifaction and Geolocation and react-native-vectors-icons and then install again react-native-vector-icons and boom..!!!
my ios application is running on my xcode simulator.
I'm trying to deploy my Ionic app to an iPhone by running either of these commands:
ionic cordova run ios
ionic cordova run ios --device
The console displays the following text:
[OK] Your app has been deployed.
Did you know you can live-reload changes from your app with --livereload?
If we look at the console output everything seems to be fine, but my iPhone doesn't detect anything and the application doesn't run. I managed to get it on my phone by opening the workspace file inside the platforms/ios and running it with Xcode, but that's a pretty tedious process, and I'm sure that's not the way to go, as it doesn't support livereload.
Also, I tried to start a new project and I'm having the same issue, so I guess it's not any plugin's fault.
Thanks in advance for your answers.
When you run the app from Xcode, does Xcode give you any more error messages in its output window? This may be a signing issue.
same error here from console.
with --verbose
get this message
registerShutdownFunction.process.exit/normal shutdown
I created a brand new React-Native app using WebStorm. When I click on Run -> iOS to fire in iOS simulator, I don't see iOS simulator loading. I don't see any errors also. Here is the screenshot after I run the project.
Now I could run react-native run-ios to get iOS simulator to work (btw which works), but I would like WebStorm to fire simulator so that I can use in-built debugger in WebStorm.
What webStorm and react-native versions do you use? looks similar to WEB-29569, fixed in 2017.3
It's possible that WebStorm uses not latest version of react native that caused some troubles with Xcode version.
First you need to upgrade your Xcode to currently latest version.
Second you would better use stable version of Node JS.
I recommend you not to create app with WebStorm. For today the best way to create new app is create-react-native-app command line tool. It will create app using expo kit. As app will be initialized - run npm start (or better yarn start if you have it, because yarn is optimized version of npm). As it loaded it will show you QR code in terminal witch is you should read with your device and it will install Expo App and open your app inside it. Also you can press i to run iOS simulator.
Here is short documentation for creating app with create-react-native-app. Follow this steps and everything will be all right.
https://facebook.github.io/react-native/docs/getting-started.html
I try to make my first steps using React Native. Development for Android (on Windows host) works. Now I wanted to test iOS, and tried to set up a development environment on a MacBook Pro.
Problem: React Native starts the iOS simulator, and then nothing happens any more. The simulator runs OK, but my React native app won't start.
What do I need to do to get my React Native installation going?
More Info:
I set up XCode and React Native according to the docs on the MacBook Pro running OSx 10.13.2 (High Sierra). XCode was installed and tested successfully, including the simulator.
When I installed Node.js I deliberately picked an older version (containing npm 4.2.0), since forums say that React Native does still have problems with npm 5. I also installed Homebrew and Watchman, like stated in the docs.
To initialize an empty project, I used
create-react-native-app HelloWorldProject
and a projet structure got created in my Documents folder.
If I finally fire up my "Hello World" test app using
cd HelloWorldProject
sudo react-native run-ios
the system responds:
Starting packager ...
Starting simulator ...
and then nothing happens. The simulator does indeed start (boot --> apple logo --> progress bar --> IOs start screen), but nothing happens afterwards.
Edit
I have given up on React Native for several reasons, I leave this question here for documentary purposes, but I cannot verify or accept any answer, I don't have a React Native development environment any more.
It's probably because you used sudo. /.expo/ is owned by root. Try to change the ownership with
sudo chown -R `whoami` ~/.expo
Refer https://github.com/react-community/create-react-native-app/issues/422
Even everything in your app seems fine, sometime you face the issue that the app is taking too much time to load either through terminal or Xcode. If there is no any other specific issue with your project, the following solution works most of the time:
Go to your app folder and then go to 'iOS' folder.
Delete 'Podfile.lock' and 'Pods' folder.
Execute the following command in Terminal from your 'ios' folder, that will bring back the 'Podfile.lock' and required Pods will be installed to 'Pods' folder:
pod install
Delete the 'build' folder in your 'iOS' folder.
Run the following command in terminal:
react-native run-ios
While the terminal is running, open '.xcworkspace' in your 'ios' folder in Xcode.
The above steps will make sure it will be build your react native project newly and will run on the simulator.
Thanks
Wasantha Wijayaratna
react native can't run iOS,I have to configure the environment in accordance with the official website of the method, but has been unable to run
first
Run time results
Try this:
Shut the Terminal spawned by React Native.
Shut down XCode completely
Re-open everything and re-run.
Try:
Close the terminal packer
Stop Xcode from debugging
Close the Google Chrome tab that has been spawned for debugging purposes
Restart Xcode debugging using the Play button
OR
By navigating to your React Native project folder, run:
npm start