| Class | Description | 
|---|---|
| ConnectivityManager | Class that answers queries about the state of network connectivity. | 
| ConnectivityManager.NetworkCallback | Base class for NetworkRequest callbacks. | 
| Network | Identifies a  Network. | 
| NetworkCapabilities | This class represents the capabilities of a network. | 
| NetworkInfo | Describes the status of a network interface. | 
| NetworkRequest | Defines a request for a network, made through  NetworkRequest.Builderand or listen for changes viaConnectivityManager.registerNetworkCallback(android.net.NetworkRequest, android.net.ConnectivityManager.NetworkCallback). | 
| NetworkRequest.Builder | Builder used to create  NetworkRequestobjects. | 
| SntpClient | Simple SNTP client class for retrieving network time. |