我有一个表视图控制器，其中包含使用核心数据保存的文本字段。我还有一个搜索显示视图控制器，我使用push segue将它们链接在一起，并使用Prepareforsegue的另一个推送将信息链接回同一个表视图控制器。但我的问题是信息没有保存回原始的表视图控制器，但每次调用准备segue时都会创建一个新信息。
这是表视图控制器代码 -
//
// PersonDetailTVC.m
// Staff Manager
//
// Created by Tim Roadley on 14/02/12.
// Copyright (c) 2012 __MyCompanyName__. All rights reserved.
//
#import "PersonDetailTVC.h"
#import "PersonsTVC.h"
#import <LibXL/LibXL.h>
@implementation PersonDetailTVC{
NSArray *recipes;
NSArray *searchResults;
UIImage *image;
UIImage *imagetwo;
UIImage *imagethree;
UIImage *imagefour;
UIImage *imagefive;
UIImage *imagesix;
UIImage *imageseven;
UIImage *imageeight;
UIImage *imagenine;
UIImage *imageten;
}
@synthesize delegate;
@synthesize person = _person;
@synthesize selectedRole;
@synthesize recipeLabel;
@synthesize recipeName;
@synthesize LinkLabel;
@synthesize personroomTextField = _personroomTextField;
@synthesize personFirstnameTextField = _personFirstnameTextField;
@synthesize personaddressTextField = _personaddressTextField;
@synthesize personcityTextField = _personcityTextField;
@synthesize personstateTextField = _personstateTextField;
@synthesize personstateTextField1 = _personstateTextField1;
@synthesize personzipTextField = _personzipTextField;
@synthesize personinsuranceTextField = _personinsuranceTextField;
@synthesize personclaimTextField = _personclaimTextField;
@synthesize persontaxTextField = _persontaxTextField;
@synthesize personRoleTableViewCell = _personRoleTableViewCell;
@synthesize personquantityTextField = _personquantityTextField;
@synthesize personageTextField = _personageTextField;
@synthesize persondescTextField = _persondescTextField;
@synthesize personserialTextField = _personserialTextField;
@synthesize personpriceTextField = _personpriceTextField;
@synthesize personnotesTextField = _personnotesTextField;
@synthesize personrcvperTextField = _personrcvperTextField;
@synthesize persontotaldepTextField = _persontotaldepTextField;
@synthesize personacvTextField = _personacvTextField;
@synthesize personconditionTextField = _personconditionTextField;
@synthesize personstoredImage = _personstoredImage;
@synthesize personimgThumbNail = _personimgThumbNail;
- (void)viewDidLoad
{
NSLog(@"Setting the value of fields in this static table to that of the passed Person");
self.personFirstnameTextField.text = self.person.firstname;
self.personaddressTextField.text = self.person.address;
self.personcityTextField.text = self.person.city;
self.personstateTextField.text = self.person.state;
self.personzipTextField.text = self.person.zip;
self.personinsuranceTextField.text = self.person.insurance;
self.personclaimTextField.text = self.person.claim;
self.persontaxTextField.text = self.person.tax;
self.personquantityTextField.text = self.person.quantity;
self.personRoleTableViewCell.textLabel.text = self.person.inRole.name;
self.personRoleTableViewCelltwo.textLabel.text = self.person.inRole.name;
self.personquantityTextField.text = self.person.quantity;
self.personconditionTextField.text = self.person.condition;
self.personageTextField.text = self.person.age;
self.persondescTextField.text = self.person.desc;
self.personserialTextField.text = self.person.serial;
self.personnotesTextField.text = self.person.notes;
self.personpriceTextField.text = self.person.price;
self.personrcvperTextField.text = self.person.rcvper;
self.personacvTextField.text = self.person.acv;
self.persontotaldepTextField.text = self.person.totaldep;
self.selectedRole = self.person.inRole; // ensure null role doesn't get saved.
self.selectedRoletwo = self.person.inRole; // ensure null role doesn't get saved.
self.personroomTextField.text = self.person.room;
self.personroomTextField1.text = self.person.room1;
self.personroomTextField2.text = self.person.room2;
self.personroomTextField3.text = self.person.room3;
self.personroomTextField4.text = self.person.room4;
self.personroomTextField5.text = self.person.room5;
self.personroomTextField6.text = self.person.room6;
self.personroomTextField7.text = self.person.room7;
self.personroomTextField8.text = self.person.room8;
self.personroomTextField9.text = self.person.room9;
self.personroomTextField10.text = self.person.room10;
self.title = self.recipe.name;
self.prepTimeLabel.text = self.recipe.prepTime;
self.recipeNameLabel.text = self.recipe.name;
self.LinkLabel.text = self.recipe.Link;
self.prepTimeLabel1.text = self.recipe.prepTime1;
self.recipeNameLabel1.text = self.recipe.name;
self.LinkLabel1.text = self.recipe.Link1;
self.persontotaldepTextField50.text = self.person.totaldep50;
self.selectedRole = self.person.inRole; // ensure null role doesn't get saved.
[self.tableView reloadData];
UITapGestureRecognizer *tgr = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(dismissKeyboard)];
[tgr setCancelsTouchesInView:NO];
[self.tableView addGestureRecognizer:tgr];
[super viewDidLoad];
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:@"showRecipeDetail"]) {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
PersonDetailTVC *destViewController = segue.destinationViewController;
destViewController.person = [recipes objectAtIndex:indexPath.row];
}
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if (indexPath.section == 0) {
switch (indexPath.row) {
case 0:
[self.personFirstnameTextField becomeFirstResponder];
break;
case 1:
[self.personaddressTextField becomeFirstResponder];
case 2:
[self.personcityTextField becomeFirstResponder];
case 3:
[self.personstateTextField becomeFirstResponder];
case 4:
[self.personzipTextField becomeFirstResponder];
case 6:
[self.personinsuranceTextField becomeFirstResponder];
case 7:
[self.personclaimTextField becomeFirstResponder];
case 8:
[self.persontaxTextField becomeFirstResponder];
case 9:
[self.personquantityTextField becomeFirstResponder];
case 10:
[self.personconditionTextField becomeFirstResponder];
case 11:
[self.personageTextField becomeFirstResponder];
case 12:
[self.persondescTextField becomeFirstResponder];
case 13:
[self.personserialTextField becomeFirstResponder];
case 14:
[self.personpriceTextField becomeFirstResponder];
case 15:
[self.personnotesTextField becomeFirstResponder];
case 16:
[self.personrcvperTextField becomeFirstResponder];
case 17:
[self.personacvTextField becomeFirstResponder];
case 18:
[self.persontotaldepTextField becomeFirstResponder];
case 19:
[self.personstoredImage becomeFirstResponder];
default:
break;
}
}
}
- (void)viewDidUnload
{
//[self setPersonNameTextField:nil];
[self setPersonFirstnameTextField:nil];
[self setPersonaddressTextField:nil];
[self setPersoncityTextField:nil];
[self setPersonstateTextField:nil];
[self setPersonzipTextField:nil];
[self setPersoninsuranceTextField:nil];
[self setPersonclaimTextField:nil];
[self setPersontaxTextField:nil];
[self setPersonquantityTextField:nil];
[self setPersonRoleTableViewCell:nil];
[self setPersonRoleTableViewCelltwo:nil];
[self setPersonconditionTextField:nil];
[self setPersonageTextField:nil];
[self setPersonserialTextField:nil];
[self setPersondescTextField:nil];
[self setPersonpriceTextField:nil];
[self setPersonnotesTextField:nil];
[self setPersonrcvperTextField:nil];
[self setPersontotaldepTextField:nil];
[self setPersonacvTextField:nil];
[super viewDidUnload];
NSString *fullURL = @"http://conecode.com";
NSURL *url = [NSURL URLWithString:fullURL];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
[_viewWeb loadRequest:requestObj];
}
- (IBAction)save:(id)sender
{
NSLog(@"Telling the PersonDetailTVC Delegate that Save was tapped on the PersonDetailTVC");
self.person.firstname = self.personFirstnameTextField.text; // Set Firstname
self.person.address = self.personaddressTextField.text; // Set Surname
self.person.city = self.personcityTextField.text;
self.person.state = self.personstateTextField.text;
self.person.zip = self.personzipTextField.text;
self.person.insurance = self.personinsuranceTextField.text;
self.person.claim = self.personclaimTextField.text;
self.person.tax = self.persontaxTextField.text;
self.person.quantity = self.personquantityTextField.text;
self.person.condition = self.personconditionTextField.text;
self.person.age = self.personageTextField.text;
self.person.desc = self.persondescTextField.text;
self.person.serial = self.personserialTextField.text;
self.person.price = self.personpriceTextField.text;
self.person.notes = self.personnotesTextField.text;
self.person.rcvper = self.personrcvperTextField.text;
self.person.acv = self.personacvTextField.text;
self.person.totaldep = self.persontotaldepTextField.text;
[self.persontwo setInRole:self.selectedRole]; // Set Relationship!!!
[self.persontwo.managedObjectContext save:nil]; // write to database
[self.delegate personDetailTVCDidSave:self];
[self.person setInRole:self.selectedRole]; // Set Relationship!!!
[self.person setInRole:self.selectedRoletwo];
[self.person.managedObjectContext save:nil]; // write to database
[self.delegate personDetailTVCDidSave:self];
}
- (void)dismissKeyboard {
[self.view endEditing:TRUE];
}
- (void)roleWasSelectedOnPersonRoleTVC:(PersonRoleTVC *)controller
{
self.personRoleTableViewCell.textLabel.text = controller.selectedRole.name;
self.selectedRole = controller.selectedRole;
NSLog(@"PersonDetailTVC reports that the %@ role was selected on the PersonRoleTVC", controller.selectedRole.name);
[self.person setInRole:self.selectedRole];
[self.person.managedObjectContext save:nil];
[delegate personDetailTVCDidSave:self];
[controller.navigationController popViewControllerAnimated:YES];
self.personRoleTableViewCelltwo.textLabel.text = controller.selectedRole.name;
self.selectedRoletwo = controller.selectedRole;
NSLog(@"PersonDetailTVC reports that the %@ role was selected on the PersonRoleTVC", controller.selectedRole.name);
[self.person setInRole:self.selectedRoletwo];
[self.person.managedObjectContext save:nil];
[delegate personDetailTVCDidSave:self];
[controller.navigationController popViewControllerAnimated:YES];
}
- (void)personChangedOnMaster:(PersonsTVC *)controller {
self.person = controller.selectedPerson;
NSLog(@"PersonDetailTVC.m: personChangedOnMaster: %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@",self.person.firstname, self.person.address, self.person.city, self.person.state, self.person.zip, self.person.insurance, self.person.claim, self.person.tax, self.person.quantity, self.person.condition, self.person.age, self.person.desc, self.person.serial, self.person.price, self.person.notes, self.person.rcvper, self.person.totaldep,
self.person.serial1, self.person.price1, self.person.notes1, self.person.rcvper1, self.person.totaldep1,
self.person.serial2, self.person.price2, self.person.notes2, self.person.rcvper2, self.person.totaldep2,
self.person.serial3, self.person.price3, self.person.notes3, self.person.rcvper3, self.person.totaldep3,
self.person.serial4, self.person.price4, self.person.notes4, self.person.rcvper4, self.person.totaldep4,
self.person.serial5, self.person.price5, self.person.notes5, self.person.rcvper5, self.person.totaldep5,
self.person.serial6, self.person.price6, self.person.notes6, self.person.rcvper6, self.person.totaldep6,
self.person.serial7, self.person.price7, self.person.notes7, self.person.rcvper7, self.person.totaldep7,
self.person.serial8, self.person.price8, self.person.notes8, self.person.rcvper8, self.person.totaldep8,
self.person.serial9, self.person.price9, self.person.notes9, self.person.rcvper9, self.person.totaldep9,
self.person.serial10, self.person.price10, self.person.notes10, self.person.rcvper10, self.person.totaldep10,
self.person.room,
self.person.room1,
self.person.room2,
self.person.room3,
self.person.room4,
self.person.room5,
self.person.room6,
self.person.room7,
self.person.room8,
self.person.room9,
self.person.room10,
self.person.acv, self.person.storedImage);
[self.navigationController popViewControllerAnimated:YES]; // Return detail view to root.
[self viewDidLoad];
self.persontwo = controller.selectedPerson;
NSLog(@"PersonDetailTVC.m: personChangedOnMaster: %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ %@ ",self.person.firstname, self.person.address, self.person.city, self.person.state, self.person.zip, self.person.insurance, self.person.claim, self.person.tax, self.person.quantity, self.person.condition, self.person.age, self.person.desc, self.person.serial, self.person.price, self.person.notes, self.person.rcvper, self.person.totaldep, self.person.acv, self.person.storedImage);
[self.navigationController popViewControllerAnimated:YES]; // Return detail view to root.
[self viewDidLoad];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
} else {
return YES;
}
}
@end
这是搜索显示控制器代码 -
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:@"showRecipeDetail"]) {
NSIndexPath *indexPath = nil;
Recipe *recipe = nil;
if (self.searchDisplayController.active) {
indexPath = [self.searchDisplayController.searchResultsTableView indexPathForSelectedRow];
recipe = [searchResults objectAtIndex:indexPath.row];
} else {
indexPath = [self.tableView indexPathForSelectedRow];
recipe = [recipes objectAtIndex:indexPath.row];
}
PersonDetailTVC *destViewController = segue.destinationViewController;
destViewController.recipe = recipe;
[self dismissViewControllerAnimated:YES completion:nil];
}
}
答案 0 :(得分：0)
无需通过segue传递数据，因为当segue执行时总是创建新实例。 在PersonDetailTVC.h中添加此内容
- (IBAction)backFromMapView:(UIStoryboardSegue *)segue
{
NSLog(@"and we are back");
PersonDetailTVC* person = (PersonDetailTVC *)segue.sourceViewController;
NSLog(@"location %@", person.recipe);
}
帮助您解决segue的表现。 这个链接有助于如何更清楚地说明：