Question

我的设置页面仍然存在问题，我似乎无法访问核心数据。出于某种原因，内容甚至没有改变。我不知道自己做错了什么

我的核心数据设置如下： CoreData-Layout

我的“设置”页面如下所示： Settings-Page

现在，我正在尝试的是在视图加载时停用Override-Slider和Time-Format选择器。我在viewDidLoad中这样做，它的工作原理。按下“编辑”按钮后，.userInteractionEnabled将设置为“是”，并发生一些其他可视更改（标题和编辑 - 保存按钮文本更改）。

我试图使用我的设置实体的settingsSysTimeFormatOverride属性来记住＆＃34;覆盖系统时间格式的位置＆＃34;滑块。但我无法将其存储在持久性存储器中： - （

这是文件：我的SettingsViewController.m：

#import "SettingsViewController.h"

@interface SettingsViewController ()

@end

@implementation SettingsViewController

int test1=0;
@synthesize editSetting;

- (void)viewDidLoad
{
    [super viewDidLoad];

    // prepare Interface
    [self setTitle:@"Edit"];
    _editSaveButton.title = @"Edit";
    _timeOverrideSlider.userInteractionEnabled = NO;
}

- (IBAction)cancel:(UIBarButtonItem *)sender
{
    [self dismissViewControllerAnimated:YES completion:nil];
}

- (IBAction)editSave:(UIBarButtonItem *)sender
{
    if ([_editSaveButton.title isEqualToString:@"Edit"])
    {
        // enable UI-Elements
        _timeOverrideSlider.userInteractionEnabled = YES;

        [self setTitle:@"Edit Settings"];
        _editSaveButton.title = @"Save";
    } else if ([_editSaveButton.title isEqualToString:@"Save"])
    {
        // disable UI-Elements
        _timeOverrideSlider.userInteractionEnabled = NO;

        [self setTitle:@"Edit"];
        _editSaveButton.title = @"Edit";


        [super saveAndDismiss];
    }
}

- (IBAction)timeOverride:(UISwitch *)sender
{
    // Nothing yet, comes when saving the position works
}
@end

我的设置ViewController.h：

#import <UIKit/UIKit.h>
#import "Setting.h"
#import "CoreViewController.h"

@interface SettingsViewController : CoreViewController

@property (nonatomic, strong)Setting *editSetting;

@property (strong, nonatomic) IBOutlet UIBarButtonItem *editSaveButton;
@property (strong, nonatomic) IBOutlet UISwitch *timeOverrideSlider;

- (IBAction)cancel:(UIBarButtonItem *)sender;
- (IBAction)editSave:(UIBarButtonItem *)sender;
- (IBAction)timeOverride:(UISwitch *)sender;    // do I really need this IBAction?
@end

我的（模态）Segue＆＃34; toSettings＆＃34;从主页：

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(UITableViewCell*)sender
{
    if ([[segue identifier]isEqualToString:@"toSettings"])
    {
        UINavigationController *settingsViewController = segue.destinationViewController;
        SettingsViewController *editSettingsViewController = (SettingsViewController*)settingsViewController.topViewController;
        NSIndexPath *indexPath = [self.fetchedResultsController objectAtIndexPath:0];
        Setting *editSettings = (Setting*)[self.fetchedResultsController objectAtIndexPath:indexPath];

        editSettingsViewController.editSetting = editSettings;
    }
}

我的segue使用＆＃34; UITableViewCell＆＃34;作为发件人，因为我在项目中有其他观点。

在我的CoreViewController.m中我有saveAndDismiss方法：

-(void)saveAndDismiss
{
    NSError *error = nil;
    if ([self.managedObjectContext hasChanges]) {
        NSLog(@"SAVE & DISMISS conetx has changed");
        if (![self.managedObjectContext save:&error]) {                 // save failed
            NSLog(@"Save failed: %@", [error localizedDescription]);
        } else {                                                        // save succeeded
            NSLog(@"Save Succeeded");
        }
    }
    [self dismissViewControllerAnimated:YES completion:nil];    
}

但是我从来没有从那里得到NSLog-Output，因为我的核心数据永远不会改变..

任何人都可以请指出，错误在哪里？

谢谢你们

核心数据不会改变

0 个答案: