/**
* Process가 실행중인지 여부 확인.
* @param context, packageName
* @return true/false
*/
public static boolean isRunningProcess(Context context, String packageName) {

        boolean isRunning = false;

        ActivityManager actMng = (ActivityManager)context.getSystemService(Context.ACTIVITY_SERVICE);

        List<RunningAppProcessInfo> list = actMng.getRunningAppProcesses();

        for(RunningAppProcessInfo rap : list)
        {
            if(rap.processName.equals(packageName))
            {
               isRunning = true;
               break;
            }
        }

        return isRunning;
}

AND