Could not connect to React Native development server on Android

Question

When I run react-native run-android, it gives me the following error:

Could not connect to development server

Answer 1

Starting with Android 9.0 (API level 28), cleartext support is disabled by default. we can use android:usesCleartextTraffic="true" this will work but this is not recommended solution. For Permanent and recommended Solution is below:

Step 1 : create a file in android folder app/src/debug/res/xml/network_security_config.xml

Step 2 : add this to network_security_config.xml

  
  
   localhost
   10.0.2.2
   10.0.3.2
  

Step 3 : Apply the config to your AndroidManifest.xml