Android Emulator is not able to load URL

Mobile api calls require https. The mobile o/s are more security conscious than laptops. Also on a mobile o/s, code can not override certificate validation. You must use a trusted certificate. If using self signed, it must be installed as trusted on the device.

Hi Swapnil Desale!

This issue is common for many applications that try to access HTTPS which requires certificate validation.

What is Certificate Validation?

• Every HTTPS server presents an SSL/TLS certificate to prove its identity
• The browser verifies this certificate is legitimate and trustworthy
• This prevents attackers from impersonating websites (man-in-the-middle attacks)

Here's how you can fix this issue:

Install Your SSL Certificate in the Emulator

1. Export the SSL certificate (usually .crt or .pem file) from your dev server.
   • For Android, the certificate must be in PEM or DER format
   • If you have a .p12 or .pfx file, convert it first
2. Drag and drop the certificate file onto the running emulator window Alternatively, use adb push yourcert.crt /sdcard/Download/ to push it with adb
3. Open Settings > Security > Encryption & credentials > Install from SD card (on the emulator) (Note: Path may vary by Android version - look for "Install certificates" or similar)
4. Choose the certificate and install it as a "trusted credential".
   • Select "VPN and apps" or "CA certificate" when prompted
   • Note: User-installed certificates may not work with all apps
5. Restart the emulator.
6. Navigate back to Chrome and refresh the page (clear cache if needed).

This will ensure Chrome in the emulator trusts the certificate.

Chrome Development Option:

• For local development only, you can navigate to chrome://flags/#allow-insecure-localhost
• Enable "Allow invalid certificates for resources loaded from localhost"

(Alternative but not recommended) If security is not a concern for your dev APIs, you can temporarily use HTTP (not HTTPS)

Please note that: Android 9+ blocks HTTP by default. You must allow cleartext traffic in your app's network_security_config.xml. See here

Documentation:

• https://developer.android.com/privacy-and-security/security-config
• https://docs.mitmproxy.org/stable/howto-install-system-trusted-ca-android/

I hope this helps!