XMLHttpRequest failed: "Unable to connect to the Parse API" on Android (react native)

componentWillMount(){
    Parse.initialize('appname');
    Parse.serverURL = 'http://localhost:1337/parse/';
  }

It perfectly works on IOS, but for some reason it doesn't on Android... it should be an easy fix, but, alas, I haven't been able to find it.

[drew-gross]

"Unable to connect to the Parse API" means there is some sort of network issue in your system. Check to make sure all your URLs are set correctly. If you still have issues, please ask on Server Fault or Stack Overflow.

[w3care25]

Usually this error occurs when you have ssl enabled on your server where you setup parse server.
Reason behind this is that node rejects unauthorized TLS.

So you can check it by putting
process.env.NODE_TLS_REJECT_UNAUTHORIZED = "0";

in you parse server instance file. hope you issue will be fixed. let me know if it isn't.

[callmephilip]

This most likely has to do with how Android emulator deals with local host connection - more info here https://stackoverflow.com/questions/6760585/accessing-localhostport-from-android-emulator

[lexycole]

I had this issues eailer, reason was i SignUp with Github and fail to authenticate my mail address.
I solved it by signIn with email and password and verifying my mail too.
Hope this solve yours too.
Thanks ;)