ios - Object assigned to property of target view controller in prepareForSegue comes out as a UITableViewCell -

ios - Object assigned to property of target view controller in prepareForSegue comes out as a UITableViewCell -

i trying set property of view controller i'm segueing to custom object (restroom), it's coming out uitableviewcell.

here code origin view controller triggering segue. userdidselectrestroomnotification method called when user selects cell in table view lists restrooms - application supposed segue view controller lists details of restroom:

- (void)userdidselectrestroomnotification:(nsnotification *)notification { restroom *selectedrestroom = (restroom *)[notification object]; [self performseguewithidentifier:@"showrestroomdetails" sender:selectedrestroom]; }; - (void)prepareforsegue:(uistoryboardsegue *)segue sender:(id)sender { if ([segue.identifier isequaltostring:@"showrestroomdetails"]) { restroomdetailsviewcontroller *restroomdetailsviewcontroller = (restroomdetailsviewcontroller*)segue.destinationviewcontroller; restroomdetailsviewcontroller.restroom = sender; } }

here code in info source notification posed:

- (void)tableview:(uitableview *)tableview didselectrowatindexpath:(nsindexpath *)indexpath { // post notification when selection made nsnotification *notification = [nsnotification notificationwithname:rrtableviewdidselectrestroomnotification object:[self restroomforindexpath:indexpath]]; [[nsnotificationcenter defaultcenter] postnotification:notification]; } - (restroom *)restroomforindexpath:(nsindexpath *)indexpath { homecoming [self.restroomslist objectatindex:[indexpath row]]; }

point being, sending along restroom object in notification.

the issues comes when in restroomdetailsviewcontroller, trying set text of label name of restroom object i'm passing along:

@interface restroomdetailsviewcontroller () @property (weak, nonatomic) iboutlet uilabel *namelabel; @end @implementation restroomdetailsviewcontroller - (void)viewwillappear:(bool)animated { [super viewwillappear:animated]; self.namelabel.text = self.restroom.name; } @end

it crashes @ self.namelabel.text = self.restroom.name. when inspect objects, see self.restroom object uitableviewcell. confuses me farther that uitableviewcell appears cell selected user trigger segue -- i.e. 1 set in info source:

- (uitableviewcell *)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath { nsparameterassert([indexpath section] == 0); nsparameterassert([indexpath row] < [_restroomslist count]); uitableviewcell *restroomcell = [tableview dequeuereusablecellwithidentifier:restroomcellreuseidentifier]; if(!restroomcell) { restroomcell = [[uitableviewcell alloc] initwithstyle:uitableviewcellstyledefault reuseidentifier:restroomcellreuseidentifier]; } restroomcell.textlabel.text = [[_restroomslist objectatindex:[indexpath row]] name]; homecoming restroomcell; }

i'm not understanding why happens , how restroom property assigned restroom object.

why using postnotification ?

i don't see requirement here utilize notification. simple function parameter work.

try next way phone call segue

- (void)tableview:(uitableview *)tableview didselectrowatindexpath:(nsindexpath *)indexpath { [self performseguewithidentifier:@"showrestroomdetails" sender:[self restroomforindexpath:indexpath]]; } - (restroom *)restroomforindexpath:(nsindexpath *)indexpath { homecoming [self.restroomslist objectatindex:[indexpath row]]; } - (void)prepareforsegue:(uistoryboardsegue *)segue sender:(id)sender { restroom *selectedrestroom = (restroom *)sender; if ([segue.identifier isequaltostring:@"showrestroomdetails"]) { restroomdetailsviewcontroller *restroomdetailsviewcontroller = (restroomdetailsviewcontroller*)segue.destinationviewcontroller; restroomdetailsviewcontroller.restroom = selectedrestroom ; } }

ios objective-c uitableview