android asynctask - Concurrent asynchronous execution more task -

hello，i want send messages more ips using tcp,i want messages concurrent asynchronous send ips,not 1 one.

  @override protected boolean doinbackground(string... params) {            for(int i=0;i<commonutil.iplist.size();i++){              if(!commonutil.iplist.get(i).equals(fromip)){                 tcpudpcommunicate.sendsinglemessage(commonutil.iplist.get(i), commonutil.local_port, xmldata);           return true;      }else {         log.i("ee","commonutil.iplist.get(i) null");         return false;      } 

if use .net 4.0 or above, use parallel.foreach(). should free concerns of batching tasks on fixed number of threads.

look here : http://msdn.microsoft.com/en-us/library/dd460720%28v=vs.110%29.aspx

the code this.

int notfromipcount = 0;  parallel.foreach(commonutil.iplist, ip =>  {     bool isnotfromip = !ip.equals(fromip);      if (isnotfromip)     {         tcpudpcommunicate.sendsinglemessage(ip, commonutil.local_port, xmldata);         interlocked.increment(ref notfromipcount);      }     else      {         // log message     } }  return notfromipcount > 0; 

the task parallel library bit slow debugger attached, profile in release mode without debugger , should barely see performance difference compared manually created threads.

ps. log message confusing. if commonutil.iplist.get(i) null, code have raised nullreferenceexception.