React Native 'hello world' quick start: “could not connect to development server”

Question

I\'m trying to do the react native \'hello world\', and I\'m using usb debugging on my android.

I ran react-native run-android, then react-native sta

Answer 1

Just another scenario, this error happened to me when I forgot to run react-native start command. I usually follow the steps here when I start new project. The steps in a nutshell are as follows (Android in my case):

• Start Android Studio -> AVD Manager -> select your aVD and click Start from action

• inside the directory where you want to create your new project, open your command line and run:

  $ react-native init 
  $ cd 
  $ react-native start  //This is the step that I forgot
  

• Open a new command prompt and run the following inside the same directory(you just created) to launch the app on your AVD.

  $ react-native run-android
  

• If everything is set up correctly, you should see your new app running in your Android emulator shortly.

• You'll find in the file index.android.js in the home directory of your project, the last line contians the App registry using the same name you used in the first command above