网络能力：NetworkMonitor/NetworkAgentInfo

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NetworkMonitor.java

    // Being in the EvaluatingState State indicates the Network is being evaluated for internet
    // connectivity, or that the user has indicated that this network is unwanted.
    private class EvaluatingState extends State {

AccessPoint.java

        // Case when there is wifi connected without internet connectivity.
        final ConnectivityManager cm = (ConnectivityManager)
                context.getSystemService(Context.CONNECTIVITY_SERVICE);
        if (state == DetailedState.CONNECTED) {
            IWifiManager wifiManager = IWifiManager.Stub.asInterface(
                    ServiceManager.getService(Context.WIFI_SERVICE));
            NetworkCapabilities nc = null;

            try {
                nc = cm.getNetworkCapabilities(wifiManager.getCurrentNetwork());

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