iphone - iOS crashes with EXC_BAD_ACCESS(code=1) -
i'm new ios, don't shy pointing out of code looks idiotic :)
here goes...
two view controllers - orderviewcontroller , lineitemviewcontroller - when user on lineitemviewcontroller, can click "scan" button sends request server mark item scanned. seems work fine, error in console app:
5/19/13 11:28:04.044 evoscanner: tcp_connection_destination_fail net_helper_connect_fail failed
the app still runs fine after getting error. issue when click "back" return orderviewcontroller, app crashes exc_bad_access(code=1).
i'm using xcode 4.6.2 arc enabled.
here's lineitemviewcontroller:
// interface #import <uikit/uikit.h> #import "lineitemmodel.h" @interface lineitemviewcontroller : uiviewcontroller @property (strong, nonatomic) lineitemmodel* _line_item; -(void)setdetailitem:(lineitemmodel *) lineitem; @property (strong, nonatomic) iboutlet uibutton *scanbutton; - (ibaction)scanitem:(id)sender; @property (strong, nonatomic) iboutlet uilabel *itemlabel; -(ibaction)scanitem; @end // implementation #import "lineitemviewcontroller.h" #import "lineitemmodel.h" #import "hud.h" #import "jsonmodellib.h" @interface lineitemviewcontroller () { lineitemmodel *_line_item; } @end @implementation lineitemviewcontroller - (id)initwithnibname:(nsstring *)nibnameornil bundle:(nsbundle *)nibbundleornil { self = [super initwithnibname:nibnameornil bundle:nibbundleornil]; if (self) { // custom initialization } return self; } - (void)viewdidload { [super viewdidload]; self.itemlabel.text = _line_item.product_title; // additional setup after loading view. } - (void)didreceivememorywarning { [super didreceivememorywarning]; // dispose of resources can recreated. } -(void)setdetailitem:(id)lineitem { if(_line_item != lineitem) { _line_item = lineitem; [self configureview]; } } - (void)configureview { // update user interface detail item. if (self._line_item) { // self.detaildescriptionlabel.text = [self.detailitem description]; } } - (ibaction)scanitem:(id)sender { nslog(@"scanning!"); nsstring *string_url = [nsstring stringwithformat:(nsstring *)@"%@/%@", @"http://localhost:3000/api/scan_item", _line_item.id ]; nsurl *url = [nsurl urlwithstring:string_url]; nsmutableurlrequest *therequest = [nsmutableurlrequest requestwithurl:url]; nsstring *messagebody = [nsstring stringwithformat:@"status=%@",@1]; nsstring *msglength = [nsstring stringwithformat:@"%d", [messagebody length]]; [therequest sethttpmethod:@"post"]; [therequest addvalue: msglength forhttpheaderfield:@"content-length"]; [therequest setvalue:@"application/x-www-form-urlencoded" forhttpheaderfield:@"content-type"]; [therequest sethttpbody:[messagebody datausingencoding:nsutf8stringencoding]]; nsurlconnection *theconnection = [[nsurlconnection alloc] initwithrequest:therequest delegate:self]; if(theconnection) { nslog(@"connection successful"); //receiveddata = [[nsmutabledata data] retain]; } else { nslog(@"there error: "); // uialertview *alert1 = [[[uialertview alloc] initwithtitle:@"alert" message:@"there issue sending data. please check internet connection." delegate:self cancelbuttontitle:@"ok" otherbuttontitles:nil] autorelease]; // [alert1 show]; } } @end and orderviewcontroller:
// interface #import <uikit/uikit.h> #import "ordermodel.h" @interface orderviewcontroller : uitableviewcontroller @property (strong, nonatomic) ordermodel* _order; @property (strong, nonatomic) id detailitem; @end // implementation #import "orderviewcontroller.h" #import "ordermodel.h" #import "lineitemmodel.h" #import "lineitemcell.h" #import "hud.h" #import "jsonmodellib.h" #import "lineitemviewcontroller.h" @interface orderviewcontroller () { ordermodel* _order; nsmutablearray* listofitems; } @end @implementation orderviewcontroller -(void)viewdidappear:(bool)animated { nslog(@"view did appear"); // show loader view //[hud showuiblockingindicatorwithtext:@"fetching order"]; //initialize array. listofitems = [[nsmutablearray alloc] init]; nsmutablearray *unpackedarray = [nsmutablearray array]; nsmutablearray *packedarray = [nsmutablearray array]; nslog(@"order: %@", _order); for(int = 0; < _order.line_items.count; i++) { nslog(@"object in loop: %@", _order.line_items[i]); lineitemmodel *li = _order.line_items[i]; if (li.qty_packed != li.quantity) { [unpackedarray addobject:(lineitemmodel *)_order.line_items[i]]; } else { [packedarray addobject:(lineitemmodel *)_order.line_items[i]]; } } nslog(@"unpacked array: %@", unpackedarray); nslog(@"packed array: %@", packedarray); nsdictionary *unpackeddict = [nsdictionary dictionarywithobject:unpackedarray forkey:@"lineitems"]; nsdictionary *packeddict = [nsdictionary dictionarywithobject:packedarray forkey:@"lineitems"]; [listofitems addobject:unpackeddict]; [listofitems addobject:packeddict]; // todo: set order id selected cell here [self.tableview reloaddata]; self.navigationitem.title = _order.customer_name; } - (void)setdetailitem:(id)newdetailitem { nslog(@"make detail item"); if (_order != newdetailitem) { _order = newdetailitem; // update view. [self configureview]; } // show loader view [hud showuiblockingindicatorwithtext:@"fetching order"]; nsstring *order_id = _order.id; nsstring *url = [nsstring stringwithformat:(nsstring *)@"%@/%@.%@", @"http://localhost:3000/api/order", order_id, @"json" ]; _order = [[ordermodel alloc] initfromurlwithstring:url completion: ^(jsonmodel *model, jsonmodelerror *err) { // hide loader view [hud hideuiblockingindicator]; [self.tableview reloaddata]; }]; } - (void)configureview { // update user interface detail item. if (_order) { // self.detaildescriptionlabel.text = [self.detailitem description]; } } - (id)initwithstyle:(uitableviewstyle)style { self = [super initwithstyle:style]; if (self) { // custom initialization } return self; } - (void)viewdidload { nslog(@"view did load"); [super viewdidload]; // uncomment following line preserve selection between presentations. // self.clearsselectiononviewwillappear = no; // uncomment following line display edit button in navigation bar view controller. // self.navigationitem.rightbarbuttonitem = self.editbuttonitem; } - (void)didreceivememorywarning { [super didreceivememorywarning]; // dispose of resources can recreated. } #pragma mark - table view data source - (nsinteger)numberofsectionsintableview:(uitableview *)tableview { #warning potentially incomplete method implementation. // return number of sections. 1 packed items, 1 items not packed. return [listofitems count]; } - (nsinteger)tableview:(uitableview *)tableview numberofrowsinsection:(nsinteger)section { // return number of rows in section. nsdictionary *dictionary = [listofitems objectatindex:section]; nsarray *array = [dictionary objectforkey:@"lineitems"]; return [array count]; } -(uitableviewcell*)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath { // nslog(@"order in lineitem cell: %@", _order); // nslog(@"lineitem: %@", line_item); // new view code subclass lineitemcell *cell = (lineitemcell *)[tableview dequeuereusablecellwithidentifier:@"lineitemcell"]; if (!cell) { cell = [[lineitemcell alloc] initwithstyle:uitableviewcellstyledefault reuseidentifier:@"lineitemcell"]; } // line item object row , section nsdictionary *dictionary = [listofitems objectatindex:indexpath.section]; nsarray *array = [dictionary objectforkey:@"lineitems"]; lineitemmodel* line_item = [array objectatindex:indexpath.row]; cell.productlabel.text = line_item.product_title; cell.variantlabel.text = line_item.variant_title; int remaining = line_item.quantity - line_item.qty_packed; cell.remaininglabel.text = [nsstring stringwithformat:@"%i", remaining]; // nslog(@"line item cell: %@", cell); return cell; } - (nsstring *)tableview:(uitableview *)tableview titleforheaderinsection:(nsinteger)section { if(section == 0) return @"unpacked items"; else return @"packed items"; } /* // override support conditional editing of table view. - (bool)tableview:(uitableview *)tableview caneditrowatindexpath:(nsindexpath *)indexpath { // return no if not want specified item editable. return yes; } */ /* // override support editing table view. - (void)tableview:(uitableview *)tableview commiteditingstyle:(uitableviewcelleditingstyle)editingstyle forrowatindexpath:(nsindexpath *)indexpath { if (editingstyle == uitableviewcelleditingstyledelete) { // delete row data source [tableview deleterowsatindexpaths:@[indexpath] withrowanimation:uitableviewrowanimationfade]; } else if (editingstyle == uitableviewcelleditingstyleinsert) { // create new instance of appropriate class, insert array, , add new row table view } } */ /* // override support rearranging table view. - (void)tableview:(uitableview *)tableview moverowatindexpath:(nsindexpath *)fromindexpath toindexpath:(nsindexpath *)toindexpath { } */ /* // override support conditional rearranging of table view. - (bool)tableview:(uitableview *)tableview canmoverowatindexpath:(nsindexpath *)indexpath { // return no if not want item re-orderable. return yes; } */ #pragma mark - table view delegate - (void) prepareforsegue:(uistoryboardsegue *)segue sender:(id)sender { nsindexpath *indexpath = [self.tableview indexpathforselectedrow]; nsdictionary *dictionary = [listofitems objectatindex:indexpath.section]; nsarray *array = [dictionary objectforkey:@"lineitems"]; lineitemmodel *li = [array objectatindex:indexpath.row]; nslog(@"line item in final: %@", li); lineitemviewcontroller *vc = [segue destinationviewcontroller]; [vc setdetailitem:li]; } - (void)tableview:(uitableview *)tableview didselectrowatindexpath:(nsindexpath *)indexpath { // navigation logic may go here. create , push view controller. /* <#detailviewcontroller#> *detailviewcontroller = [[<#detailviewcontroller#> alloc] initwithnibname:@"<#nib name#>" bundle:nil]; // ... // pass selected object new view controller. [self.navigationcontroller pushviewcontroller:detailviewcontroller animated:yes]; */ } @end update: after setting breakpoints exceptions, trace leads me to:
#import <uikit/uikit.h> #import "evoappdelegate.h" int main(int argc, char *argv[]) { @autoreleasepool { // breakpoint leads line // thread 1: exc_bad_access(code=1, ...) return uiapplicationmain(argc, argv, nil, nsstringfromclass([evoappdelegate class])); } }
try unlinking delegate , datasource links in ib , setting delegate , datasource uitableview in orderviewcontroller programmatically
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