void getTask() {
        ActivityManager activityManager;
        try {
            activityManager = (ActivityManager) this
                    .getSystemService(ACTIVITY_SERVICE);
            arylistTask = new ArrayList<String>();
            List<ActivityManager.RunningTaskInfo> mRunningTasks =
            activityManager.getRunningTasks(30); //30表示获取的最大数
            /* 以循环及baseActivity方式取得任务名称与ID */
                    for (RunningTaskInfo amTask : mRunningTasks)
                {
                    Log.d("TaskInfo", amTask.baseActivity.getClassName()+"("+amTask.id+")");
                }
            //获取服务
            List<RunningServiceInfo> mserviceTasks =
                activityManager.getRunningServices(30);
/* 以循环方式取得任务名称与ID */
            for (RunningServiceInfo serinfo : mserviceTasks)
            {
                Log.d("TaskServerInfo", serinfo.process+"("+serinfo.pid+")");
            }
        }
        catch (Exception e)
        {
        }