Merge "Revert "Revert "svc(nfc): Use NfcAdapter API to enable/disable""" into main

package com.android.commands.svc;

import android.app.ActivityThread;

import android.content.Context;

import android.nfc.INfcAdapter;

import android.os.RemoteException;

import android.os.ServiceManager;

import android.nfc.NfcAdapter;

import android.nfc.NfcManager;

import android.os.Looper;

public class NfcCommand extends Svc.Command {

    @Override

    public void run(String[] args) {

        INfcAdapter adapter = INfcAdapter.Stub.asInterface(

                ServiceManager.getService(Context.NFC_SERVICE));

        Looper.prepareMainLooper();

        ActivityThread.initializeMainlineModules();

        Context context = ActivityThread.systemMain().getSystemContext();

        NfcManager nfcManager = context.getSystemService(NfcManager.class);

        if (nfcManager == null) {

            System.err.println("Got a null NfcManager, is the system running?");

            return;

        }

        NfcAdapter adapter = nfcManager.getDefaultAdapter();

        if (adapter == null) {

            System.err.println("Got a null NfcAdapter, is the system running?");

            return;

        }

        try {

        if (args.length == 2 && "enable".equals(args[1])) {

            adapter.enable();

            return;

            adapter.disable(true);

            return;

        }

        } catch (RemoteException e) {

            System.err.println("NFC operation failed: " + e);

            return;

        }

        System.err.println(longHelp());

    }