iphone - How do I display data in a UITableView cell from an NSDictionary? -

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hi received 2000 of datas udp , display values in tableview .what easiest method ?

now using 2 nsthreads , 1 thread receive data via udp , stores in nsmutabledictionary.another thread update tableview using these dictionary values. crashes app.

here code used

i stored received values this

 nsmutabledictionary *dictitem  customitem *item = [[customitem alloc]init];  item.sno =[nsstring stringwithformat:@"%d",sno];  item.time=currenttime;  [dictitem setobject:item forkey:[nsstring stringwithformat:@"%d",sno]];  [item release];

delegate method used , used customtablecells display data column vice.

- (nsinteger)numberofsectionsintableview:(uitableview *)tableview { return 1;

}

- (nsinteger)tableview:(uitableview *)tableview numberofrowsinsection:(nsinteger)section  {     return [dictitem count]; }    - (uitableviewcell *)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath {  static nsstring *identifier = @"customtablecell";     customtablecell *cell = (customtablecell *)[tableview dequeuereusablecellwithidentifier:identifier];     if (cell == nil)      {         cell = [[[customtablecell alloc]initwithstyle:uitableviewcellstyledefault reuseidentifier:identifier] autorelease];     }     nsarray *keys = [dictitem allkeys];     customitem *item = [dictitem objectforkey:[keys objectatindex:indexpath.row]];     cell.sno.text = item.sno;     cell.time.text  = item.time;     return cell; }

the errror

terminating app due uncaught exception 'nsgenericexception', reason: '*** collection mutated while being enumerated.' 2010-07-23 02:33:07.891 centrak[2034:207] stack: ( 42162256, 43320108, 42161198, 43372629, 41719877, 41719345, 9948, 3276988, 3237662, 3320232, 3288478, 71153942, 71153189, 71096786, 71096114, 71296742, 41650770, 41440069, 41437352, 51148957, 51149154, 2925426 ) terminate called after throwing instance of 'nsexception'

can me ?

thanks in advance.......

you have use locking because when access dictionary table view, perhaps being mutated other thread. try @ nslock docs. before mutating dictionary [mylock lock]; , after mutating [mylock unlock];. similar in other thread: before enumerating dictionary [mylock lock]; , after getting values [mylock unlock];. mylock nslock object , must shared between threads.


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