This answer helped me a lot.
How to programmatically create and read WEP/EAP WiFi configurations in Android?
This is how you configure Wifi with EAP Sim.
private fun getWifiConfigurationForAirtelEAP(ssId: String,sim:String):WifiConfiguration{
val wifiConfiguration = WifiConfiguration()
wifiConfiguration.SSID = String.format("\"%s\"", ssId);
wifiConfiguration.hiddenSSID = false
wifiConfiguration.BSSID = null
wifiConfiguration.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN)
wifiConfiguration.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP)
wifiConfiguration.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP)
wifiConfiguration.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104)
wifiConfiguration.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40)
wifiConfiguration.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_EAP)
wifiConfiguration.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.IEEE8021X)
wifiConfiguration.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP)
wifiConfiguration.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP)
wifiConfiguration.allowedProtocols.set(WifiConfiguration.Protocol.RSN)
wifiConfiguration.allowedProtocols.set(WifiConfiguration.Protocol.WPA)
wifiConfiguration.enterpriseConfig = getWifiEnterpriseConfig(sim)
return wifiConfiguration
}
private fun getWifiEnterpriseConfig(sim: String): WifiEnterpriseConfig {
val enterpriseConfig = WifiEnterpriseConfig()
enterpriseConfig.eapMethod = WifiEnterpriseConfig.Eap.SIM
enterpriseConfig.anonymousIdentity = "NULL"
val field = enterpriseConfig.javaClass.getDeclaredField("mFields");
field.isAccessible =true
val values = (field.get(enterpriseConfig) as HashMap<String,String>)
values.put(SIM_NUM,"\""+sim+"\"")
values.put(CLIENT_CERT,"NULL")
values.put(KEY_ID,"NULL")
values.put(ENGINE,"0")
values.put(ENGINE_ID,"NULL")
values.put(IDENTITY,"NULL")
values.put(CA_PATH,"NULL")
values.put(DOMAIN_SUFFIX_MATCH,"NULL")
values.put(CA_CERT,"NULL")
values.put(PASSWORD,"NULL")
values.put(ANONYMOUS_IDENTITY,"NULL")
return enterpriseConfig
}