Axios doesn't work with Android (emulator) raising a Network Error
Problem
I'n new with React Native, and I was playing around with components and http ajax request, and all went fine with iOs emulator, until I thought to test on Android emulator. This is my Http class: [code block] This is the error I'm getting from the post request, using login() function I created using axios.post() NOTE: - I'm using the latest version of Axios ^0.16.2 - My AndroidManifest.xml contains: [code block] - The APIs are under VPN, as I wrote all works fine with iOs emulator but doesn't with the Android one.
Error Output
error I'm getting from the post request, using **login()** function I created using **axios.post()**
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1 Fix
Fix Axios Network Error on Android Emulator
The Android emulator may not have proper network configuration to access APIs under VPN, leading to Axios throwing a Network Error. Unlike iOS, Android emulators can have stricter network access rules, especially when dealing with VPNs or local servers.
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- 1
Check Android Emulator Network Settings
Ensure that the Android emulator is configured to use the host machine's network. This can be done by checking the emulator's settings and ensuring that it is not set to use a specific proxy that may block access to the VPN.
- 2
Use 10.0.2.2 for Localhost Access
If your API is running on your local machine, use the IP address 10.0.2.2 instead of localhost or 127.0.0.1 in your Axios requests. This IP address is a special alias to your host loopback interface.
javascriptaxios.post('http://10.0.2.2:YOUR_PORT/api/login', data) - 3
Enable Cleartext Traffic
If your API is using HTTP instead of HTTPS, you need to enable cleartext traffic in your AndroidManifest.xml. Add the following attribute to the application tag: android:usesCleartextTraffic="true".
xml<application android:usesCleartextTraffic="true"> - 4
Check VPN Configuration
Ensure that the VPN settings on your Android emulator allow traffic to the API endpoints. Sometimes, VPNs can block certain requests or require specific configurations to allow access.
- 5
Test Network Connectivity
Use tools like Postman or curl to test the API endpoints from the Android emulator. This will help confirm whether the issue is with Axios or the network configuration.
bashcurl http://10.0.2.2:YOUR_PORT/api/login
Validation
After applying the above steps, run your React Native application on the Android emulator again and check if the Axios requests succeed without throwing a Network Error. You can also monitor the network requests using the React Native Debugger.
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Environment
Submitted by
Alex Chen
2450 rep