xcode - Saving data to an existing plist -

i working on project has simple tableview detail view.

data source plist. trying allow user input saved plist , shown in tableview. have created add view controller gets presented , dismissed modally , has 2 text fields allow user add name of city , name of states, text field input description.

problem: how save data existing plist , show in tableview. here code table view:

@implementation tableviewcontroller  @synthesize content, searchresults;    - (id)initwithstyle:(uitableviewstyle)style { self = [super initwithstyle:style]; if (self) {     // custom initialization } return self; }  - (void)viewdidload { [super viewdidload];  content = [[nsarray alloc] initwithcontentsoffile:[[nsbundle mainbundle] pathforresource:@"data" oftype:@"plist"]]; }  - (ibaction)add; { addviewcontroller* controller = [[addviewcontroller alloc] init]; [self presentviewcontroller:controller animated:yes completion:nil]; }  - (void)didreceivememorywarning { [super didreceivememorywarning]; // dispose of resources can recreated. }  - (nsinteger)tableview:(uitableview *)tableview numberofrowsinsection:(nsinteger)section {  if (tableview == self.searchdisplaycontroller.searchresultstableview) {     return [self.searchresults count];  } else {     return [self.content count];  } }  - (void)filtercontentforsearchtext:(nsstring*)searchtext scope:(nsstring*)scope {  nspredicate *resultpredicate = [nspredicate predicatewithformat: @"self['city'] beginswith[c] %@ ", searchtext];  searchresults = [[content filteredarrayusingpredicate:resultpredicate] retain]; }  -(bool)searchdisplaycontroller:(uisearchdisplaycontroller *)controller shouldreloadtableforsearchstring:(nsstring *)searchstring { [self filtercontentforsearchtext:searchstring                            scope:[[self.searchdisplaycontroller.searchbar scopebuttontitles]                                   objectatindex:[self.searchdisplaycontroller.searchbar                                                  selectedscopebuttonindex]]];  return yes; }  - (uitableviewcell *)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath { static nsstring *cellidentifier = @"cell"; uitableviewcell *cell = [tableview dequeuereusablecellwithidentifier:cellidentifier]; if (cell == nil) {     cell = [[[uitableviewcell alloc] initwithstyle: uitableviewcellstyledefault reuseidentifier: cellidentifier] autorelease]; }  if (tableview == self.searchdisplaycontroller.searchresultstableview) {     cell.textlabel.text = [[searchresults objectatindex:indexpath.row] valueforkey:@"city"];     cell.detailtextlabel.text = [[searchresults objectatindex:indexpath.row] valueforkey:@"state"];     cell.imageview.image = [uiimage imagenamed:[[self.searchresults objectatindex:indexpath.row] valueforkey:@"cityimage"]]; } else {     cell.textlabel.text = [[self.content objectatindex:indexpath.row] valueforkey:@"city"];     cell.detailtextlabel.text = [[self.content objectatindex:indexpath.row] valueforkey:@"state"];     cell.imageview.image = [uiimage imagenamed:[[self.content objectatindex:indexpath.row] valueforkey:@"cityimage"]];  }  return cell; }    - (void)tableview:(uitableview *)tableview didselectrowatindexpath:(nsindexpath *)indexpath { if (tableview == self.searchdisplaycontroller.searchresultstableview) {     [self performseguewithidentifier: @"showdetails" sender: self]; } }  -(void)prepareforsegue:(uistoryboardsegue *)segue sender:(id)sender  {  if ([segue.identifier isequaltostring:@"showdetails"]) {      nsindexpath *indexpath = [self.tableview indexpathforselectedrow];     detailviewcontroller *dvc = [segue destinationviewcontroller];      if ([self.searchdisplaycontroller isactive]) {          dvc.cityimagestring = [[searchresults objectatindex:indexpath.row] valueforkey:@"cityimage"];         dvc.citytextstring = [[searchresults objectatindex:indexpath.row] valueforkey:@"citytext"];         dvc.citynamestring = [[searchresults objectatindex:indexpath.row] valueforkey:@"city"];         dvc.statenamestring = [[searchresults objectatindex:indexpath.row] valueforkey:@"state"];     } else {          dvc.cityimagestring = [[self.content objectatindex:indexpath.row] valueforkey:@"cityimage"];         dvc.citytextstring = [[self.content objectatindex:indexpath.row] valueforkey:@"citytext"];         dvc.citynamestring = [[self.content objectatindex:indexpath.row] valueforkey:@"city"];         dvc.statenamestring = [[self.content objectatindex:indexpath.row] valueforkey:@"state"];     }  } } 

and here code addviewcontroller.h:

@interface addviewcontroller : uiviewcontroller <uinavigationcontrollerdelegate,uiimagepickercontrollerdelegate>{  iboutlet uitextfield *citytextfield; iboutlet uitextfield *statetextfield; iboutlet uitextview *citydescription;  uiimagepickercontroller* imagepicker; } @property (nonatomic, copy) nsstring* name; @property (nonatomic, copy) nsstring* description; @property (nonatomic, strong) uiimage* image; @property (nonatomic, retain) iboutlet uinavigationbar* navigationbar;  @property (nonatomic, strong) uitextfield *citytextfield; @property (nonatomic, strong) uitextfield *statetextfield; @property (nonatomic, strong) uitextview *citydescription;  @property (nonatomic, strong) iboutlet uibutton* choosephotobutton; @property (nonatomic, strong) iboutlet uibutton* takephotobutton;    - (ibaction)save; - (ibaction)cancel;  - (ibaction)choosephoto; - (ibaction)takephoto;  @end 

and @ last add view controller .m

@implementation addviewcontroller @synthesize citytextfield, statetextfield, citydescription;  - (id)initwithnibname:(nsstring *)nibnameornil bundle:(nsbundle *)nibbundleornil { self = [super initwithnibname:nibnameornil bundle:nibbundleornil]; if (self) {     // custom initialization } return self; }  - (ibaction)save { // make sure user has entered @ least recipe name if (self.citytextfield.text.length == 0) {     uialertview* alertview = [[uialertview alloc]                               initwithtitle:@"whoops..."                               message:@"please enter city name"                               delegate:nil                               cancelbuttontitle:@"ok"                               otherbuttontitles:nil];      [alertview show];     [alertview release];     return; }  if (self.statetextfield.text.length == 0) {     uialertview* alertview = [[uialertview alloc]                               initwithtitle:@"whoops..."                               message:@"please enter city name"                               delegate:nil                               cancelbuttontitle:@"ok"                               otherbuttontitles:nil];      [alertview show];     [alertview release];     return; } // make sure user has entered @ least recipe name if (self.citydescription.text.length == 0) {     uialertview* alertview = [[uialertview alloc]                               initwithtitle:@"whoops..."                               message:@"please enter city description"                               delegate:nil                               cancelbuttontitle:@"ok"                               otherbuttontitles:nil];      [alertview show];     [alertview release];     return; }  self.name = self.citytextfield.text; self.name = self.statetextfield.text; self.description = self.citydescription.text;   if ([[self parentviewcontroller] respondstoselector:@selector(dismissviewcontrolleranimated:)]){      [[self parentviewcontroller] dismissviewcontrolleranimated:yes completion:nil];  } else {      [[self presentingviewcontroller] dismissviewcontrolleranimated:yes completion:nil]; } }  - (ibaction)cancel { {      if ([[self parentviewcontroller] respondstoselector:@selector(dismissmodalviewcontrolleranimated:)]){          [[self parentviewcontroller] dismissviewcontrolleranimated:yes completion:nil];      } else {          [[self presentingviewcontroller] dismissviewcontrolleranimated:yes completion:nil];     } } }  - (ibaction)choosephoto { // show image picker photo library imagepicker = [[uiimagepickercontroller alloc] init]; imagepicker.sourcetype = uiimagepickercontrollersourcetypephotolibrary; imagepicker.delegate = self; imagepicker.allowsediting = yes; [self presentviewcontroller:imagepicker animated:yes completion:nil]; }  - (ibaction)takephoto {  uiimagepickercontroller *picker = [[uiimagepickercontroller alloc] init]; //picker.delegate = self; picker.allowsediting = yes; picker.sourcetype = uiimagepickercontrollersourcetypecamera;  [self presentviewcontroller:picker animated:yes completion:null];  }  - (void)touchesended:(nsset *)touches withevent:(uievent *)event {  uitouch *touch = [touches anyobject]; if ([citydescription isfirstresponder] && [touch view] != citydescription) {      [citydescription resignfirstresponder]; } }  - (void)touchesbegan:(nsset *)touches withevent:(uievent *)event {  [citytextfield resignfirstresponder]; [statetextfield resignfirstresponder]; }  #pragma mark - #pragma mark uiimagepickercontrollerdelegate  - (void)imagepickercontroller:(uiimagepickercontroller*)picker     didfinishpickingmediawithinfo:(nsdictionary*)info { // here when user has picked image. // put image in our property , set on button.  if (imagepicker) {     self.image = [info objectforkey:uiimagepickercontrollereditedimage];     [self.choosephotobutton setimage:self.image forstate:uicontrolstatenormal]; } else {      if (picker) {         self.image = [info objectforkey:uiimagepickercontrollereditedimage];         [self.takephotobutton setimage:self.image forstate:uicontrolstatenormal];     } }  [self dismissviewcontrolleranimated:yes completion:nil]; [imagepicker release]; imagepicker = nil; }  - (void)imagepickercontrollerdidcancel:(uiimagepickercontroller*)picker { [self dismissviewcontrolleranimated:yes completion:nil]; [imagepicker release]; imagepicker = nil; } - (void)viewdidload { [super viewdidload]; // additional setup after loading view. }  - (void)didreceivememorywarning { [super didreceivememorywarning]; // dispose of resources can recreated. }  @end 

i know there tons of similar questions , believe me have looked @ many of them , think hitting wall 1 , cant think of proper way this. may simple life of me cant figure out , thats why trying ask help. appreciate can get. if needs can place sample project on git hub ease of access. project built in ios 6 , latest xcode.

p.s. here link project on git hub: https://github.com/adrianphillips/tablesearch

just every 1 has pointed out can not write plist in main bundle. need copy bundle application document directory. can init , write path in documents directory. other issue have, nothing communicating new data addviewcontroller tableviewcontroller. should create protocol , delegate addviewcontroller.

for gore details see pull request on github.
https://github.com/gayledds/tablesearch.git