remoteservice.java

Google s android SDK

/* 
 * Copyright (C) 2007 Google Inc.
 *
 * 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.google.android.samples.app;

import android.app.Notification;
import android.app.NotificationManager;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.os.Process;

// Need the following import to get access to the app resources, since this
// class is in a sub-package.
import com.google.android.samples.R;

/**
 * This is an example of implementing an application service that runs in a
 * different process than the application.  Note that it is no different than
 * {@link LocalService} -- the only difference is how we describe it in
 * AndroidManifest.xml.  The {@link RemoteServiceController} and
 * {@link RemoteServiceBinding} classes show how to interact with the service.
 */
public class RemoteService extends Service {
    /**
     * This is the one call we can receive from clients.
     */
    static final int GET_PID_TRANSACTION = IBinder.FIRST_CALL_TRANSACTION;

    @Override
    protected void onCreate() {
        mNM = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);

        // This is who should be launched if the user selects our persistent
        // notification.
        Intent intent = new Intent(this, LocalServiceController.class);

        // Display a notification about us starting.
        mNM.notifyWithText(R.string.remote_service_started,
                   getText(R.string.remote_service_started),
                   NotificationManager.LENGTH_SHORT,
                   new Notification(
                       R.drawable.stat_sample,
                       getText(R.string.remote_service_label),
                       intent,
                       null, 
                       null));
    }

    @Override
    protected void onDestroy() {
        // Cancel the persistent notification.
        mNM.cancel(R.string.remote_service_started);

        // Tell the user we stopped.
        mNM.notifyWithText(R.string.remote_service_stopped,
                   getText(R.string.remote_service_stopped),
                   NotificationManager.LENGTH_SHORT,
                   null);
    }

    @Override
    public IBinder getBinder() {
        return mBinder;
    }

    /**
     * The IRemoteInterface is defined through IDL
     */
    private final IRemoteService.Stub mBinder = new IRemoteService.Stub() {
        public int getPid() {
            return Process.myPid();
        }
    };

    private NotificationManager mNM;
}