CommonUtil.java

import android.app.Activity;
import android.app.ActivityManager;
import android.app.ActivityManager.RunningServiceInfo;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.view.View;

/*
 * Copyright {2014} {Matsuda Jumpei}
 * 
 * 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.
 */

/**
 * @author jmatsu
 *
 */
public class CommonUtil {
    private static final String TAG = CommonUtil.class.getSimpleName();

    private CommonUtil() {
    }

    /**
     * Checking the status of the specific service 
     * @param act
     * @param serviceClass
     * @return Returns true if the service is running, otherwise false.
     */
    public static boolean isServiceRunning(Activity act,
            Class<? extends Service> serviceClass) {
        ActivityManager manager = (ActivityManager) act
                .getSystemService(Context.ACTIVITY_SERVICE);
        for (RunningServiceInfo rsinfo : manager
                .getRunningServices(Integer.MAX_VALUE)) {
            if (serviceClass.getName().equals(rsinfo.service.getClassName())) {
                return true;
            }
        }
        return false;
    }

    /**
     * Starting the service if it's not running.
     * @param act
     * @param serviceClass
     */
    public static void startService(Activity act,
            Class<? extends Service> serviceClass) {
        if (!isServiceRunning(act, serviceClass)) {
            Log.d(TAG, serviceClass.getName() + " is not running. Awake it.");
            act.startService(new Intent(act, serviceClass));
        } else {
            Log.d(TAG, serviceClass.getName() + " is running");
        }
    }

    /**
     * Stopping the service if it's running.
     * @param act
     * @param serviceClass
     */
    public static void stopService(Activity act,
            Class<? extends Service> serviceClass) {
        if (isServiceRunning(act, serviceClass)) {
            Log.i(TAG, serviceClass.getName() + " is running. KILL it.");
            act.stopService(new Intent(act, serviceClass));
        } else {
            Log.i(TAG, serviceClass.getName() + " is not running");
        }
    }
}