Android: Volley NoConnectionError

Question

I\'m trying to connect to a REST-Server (which I created with Spark) via Android. I can send POST-Requests with POSTMAN (Chrome Addon) and get what I want, but when I try to

Answer 1

Android emulator uses 10.0.2.2 as a host loopback interface. Use it instead of 127.0.0.1 which is emulator itself.

Answer 2

127.0.0.1 is the loopback ip address on your android device. You need the ip address of your computer. I presume you 're running on an emulator or Android device of some sort. If your server is running on a local Wifi network, use the IP address of your Wifi adapter then replace 127.0.0.1 with that address.

TLDR; Use you server's IP address instead of 127.0.0.1

Linux: ifconfig [wlan0]

Windows: ipconfig

Edit 2020:

On newer versions on Android, all HTTP traffic must be encrypted, otherwise the android framework will throw an error. Therefore it's advisable to use a tunnelling server like Ngrok - which comes with free SSL - when testing on your local server.

Answer 3

Check your xammp or wamp connection. if the mysql and apache services are not active then start all services and run your application it gave proper output

Answer 4

if your test on local, try to check an ip address (on window open cmd run ipconfig) then put your ip address again.

This's an example

String url = http://127.0.0.1:8080/user <-- error

String url = "http://172.16.5.240:8080/user <-- worked