Trying to explain a a java nested loop which checks for a network connection

I'm trying to do a written report on some code and I found one on youtube. However I don't understand how this loop works. I understand that it must return a boolean value which then goes into another method but if someone could breakdown what is happening it would be greatly appreciated.

public class Loop {
    public static boolean isConnectedToInternet(Context context){

        ConnectivityManager connectivityManager = (ConnectivityManager)
                context.getSystemService(context.CONNECTIVITY_SERVICE);

        if (connectivityManager!=null){
            NetworkInfo[] info = connectivityManager.getAllNetworkInfo();
            if (info!=null){
                for (int i=0;i<info.length;i++){
                    if (info[i].getState() == NetworkInfo.State.CONNECTED)
                        return true;
                }
            }
        }
        return false;
    }
}