Android WifiManager.addNetwork() returns -1

Question

I am writing an android app which will connect to a specific WPA access point, when connected, it will issue a http call. It will not save the network config. I have read al

Answer 1

The problem is that you're trying to add the network configuration that already exists. When you call:

int netId = wifiManager.addNetwork(wc);

it will fail (return -1) if the network configuration with the same SSID already exists. So, what you need to do is to check if netId is -1 and if it is, traverse through the configured networks searching for the network with same SSID and once it's found, return the networkId.

Kotlin:

var netId = wifiManager.addNetwork(conf)
if (netId == -1) netId = wifiManager.configuredNetworks?.let {
    it.firstOrNull { it.SSID.trim('"') == ssid.trim('"') }?.networkId ?: -1
}
wifiManager.enableNetwork(netId, true)