Android Open Source - retrowatch Service Monitoring

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License

The source code is released under:
Apache License
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Java Source Code

/*
 * Copyright (C) 2014 Bluetooth Connection Template
 */*from  www  .  j  a va2 s  .c o  m*/
 * 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.hardcopy.retrowatchle.service;

import java.util.List;

import com.hardcopy.retrowatchle.utils.Settings;

import android.app.ActivityManager;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.os.SystemClock;

public class ServiceMonitoring {
  
  private static long SERVICE_RESTART_INTERVAL = 60*1000;
  

  /**
   * Check if specified service is running or not
   * @param context
   * @param cls      name of service
   * @return  boolean    is running or not
   */
  private static boolean isRunningService(Context context, Class<?> cls) {
    boolean isRunning = false;

    ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    List<ActivityManager.RunningServiceInfo> info = activityManager.getRunningServices(Integer.MAX_VALUE);

    if (info != null) {
      for(ActivityManager.RunningServiceInfo serviceInfo : info) {
        ComponentName compName = serviceInfo.service;
        String className = compName.getClassName();

        if(className.equals(cls.getName())) {
          isRunning = true;
          break;
        }
      }
    }
    return isRunning;
  }
  
  /**
   * Start service monitoring to recover from unintended termination
   * @param context
   */
  public static void startMonitoring(Context context) {
    AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
    Intent intent = new Intent(context, ServiceMonitoringBR.class);
    PendingIntent pi = PendingIntent.getBroadcast(context, 0, intent, 0);
    am.setRepeating(AlarmManager.ELAPSED_REALTIME, SystemClock.elapsedRealtime(), SERVICE_RESTART_INTERVAL, pi);
  }

  /**
   * Stop service monitoring
   * @param context
   */
  public static void stopMonitoring(Context context) {
    AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
    Intent intent = new Intent(context, ServiceMonitoringBR.class);
    PendingIntent pi = PendingIntent.getBroadcast(context, 0, intent, 0);
    am.cancel(pi);
  }
  
  
  /**
   *  Broadcast receiver
   */
  public static class ServiceMonitoringBR extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
      // Logs.d("# Monitoring service");
      
      // Check settings value
      Settings settings = Settings.getInstance(context);
      if(!settings.getRunInBackground()) {
        stopMonitoring(context);
        return;
      }
      // If service is not running, start service.
      if(isRunningService(context, RetroWatchService.class) == false) {
        context.startService(new Intent(context, RetroWatchService.class));
      }
    }
  }
  
}
Java Source Code List
