com/android/commands/svc/NfcCommand.java

/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.commands.svc;

import android.content.Context;
import android.nfc.INfcAdapter;
import android.os.RemoteException;
import android.os.ServiceManager;

public class NfcCommand extends Svc.Command {

    public NfcCommand() {
        super("nfc");
    }

    @Override
    public String shortHelp() {
        return "Control NFC functions";
    }

    @Override
    public String longHelp() {
        return shortHelp() + "\n"
                + "\n"
                + "usage: svc nfc [enable|disable]\n"
                + "         Turn NFC on or off.\n\n";
    }

    @Override
    public void run(String[] args) {
        INfcAdapter adapter = INfcAdapter.Stub.asInterface(
                ServiceManager.getService(Context.NFC_SERVICE));

        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;
            } else if (args.length == 2 && "disable".equals(args[1])) {
                adapter.disable(true);
                return;
            }
        } catch (RemoteException e) {
            System.err.println("NFC operation failed: " + e);
            return;
        }

        System.err.println(longHelp());
    }

}