ios - Unable to fetch the data from Core Data file -



ios - Unable to fetch the data from Core Data file -

when fetch record core info returns null value...i don't know problem...

when check in nslog shows this:

"<ad: 0x979fb30> (entity: ad; id: 0x9799470 <x-coredata://b3aa111f-8307-4a16-b898- 403a804dfdfb/ad/p22> ; data: <fault>)", "<ad: 0x979fd70> (entity: ad; id: 0x9799480 <x-coredata://b3aa111f-8307-4a16-b898- 403a804dfdfb/ad/p23> ; data: <fault>)

here code. returned core info functions in separate class called dbmanager.

- (void)viewdidload { dbmanager *manager=[[dbmanager alloc]init]; self.fetchedrecordsarray = [manager fetchallads]; [self.shoppingtbl reloaddata]; } - (nsinteger)numberofsectionsintableview:(uitableview *)tableview { homecoming 1; } - (nsinteger)tableview:(uitableview *)tableview numberofrowsinsection:(nsinteger)section { homecoming [self.fetchedrecordsarray count]; } - (uitableviewcell *)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath { static nsstring *cellidentifier = @"shoppingcart"; shoppingcart *cell = (shoppingcart*)[tableview dequeuereusablecellwithidentifier:cellidentifier forindexpath:indexpath]; cell.backgroundcolor=[uicolor clearcolor]; ad=[self.fetchedrecordsarray objectatindex:indexpath.row] cell.addesc.text = ad.data; cell.adid.text=[nsstring stringwithformat:@"%lu", (long)[ad.adid integervalue]]; cell.adstatus.text=[nsstring stringwithformat:@"%@",ad.state]; homecoming cell; }

the entity name called ad. contains adid,state,data.

in table view shows null value strings , 0 numbers..

i recommend abandon fetchedrecordsarray , encompass nsfetchedresultscontroller. designed work core info , table views.

this eliminate problem have , result in much more robust , scalable code. displaying 100.000s ads way without problem.

one more hint, i.e. might want check beforehand: quite perchance did not save info correctly. looks saved each record [managedobjectcontext save:&error] after created, perhaps did not correctly after populating state, data. way check enumerate array elements , nslog bits of info check if there.

ios uitableview core-data

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