I got problem like that when I handled switching from https to http manually when my link was https has problem with certificate
com.android.volley.NoConnectionError: javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not foundو so it appears disconnected in check connection with the server and the link schema changes to http which gives me 303 error code when I find https certificate error and solve like this link :
Android volley error: "Trust anchor for certification path not found", only in real device, not emulator everything works fine.
so my suggestion
- be ensure your are connected with the right link schema of the server if it
(http or https)
- check volley error message
- if it's a problem with the certificate try to solve it first
hope that can solve your problem