我有一个 1 错误，我不明白为什么？我将发布所有代码，因为过去 3 个小时我一直在看这个并且已经放弃了。
// // AssignmentListViewController.h
// AssignmentAppTwo
//
// Created by Abdel Elrafa on 10/11/13.
// Copyright (c) 2013 Abdel Elrafa. All rights reserved.
//
#import <UIKit/UIKit.h>
#import "AddEditViewController.h"
@interface AssignmentListViewController : UITableViewController
@property(strong,nonatomic) AddEditViewController *vc;
@end
// // AssignmentListViewController.m
// AssignmentAppTwo
//
// Created by Abdel Elrafa on 10/11/13.
// Copyright (c) 2013 Abdel Elrafa. All rights reserved.
//
#import "AssignmentListViewController.h"
#import "AssignmentInfo.h"
#import "AddEditViewController.h"
@interface AssignmentListViewController (){
AssignmentInfo *classObj2;
}
@end
@implementation AssignmentListViewController
@synthesize vc = _vc;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
-(void)assignmentSaved:(AssignmentInfo *)classObj
{
// [self.navigationController popViewControllerAnimated:YES];
NSLog(@"%@",classObj.description);
classObj2 = classObj;
[self.tableView reloadData];
}
-(AddEditViewController *)vc
{
if (!_vc) {
_vc = [[AddEditViewController alloc]init];
}
return _vc;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Uncomment the following line to preserve selection between presentations.
// self.clearsSelectionOnViewWillAppear = NO;
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
#warning Potentially incomplete method implementation.
// Return the number of sections.
return 0;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
#warning Incomplete method implementation.
// Return the number of rows in the section.
return 0;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
// Configure the cell...
return cell;
}
/*
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the specified item to be editable.
return YES;
}
*/
/*
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete) {
// Delete the row from the data source
[tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
else if (editingStyle == UITableViewCellEditingStyleInsert) {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
}
}
*/
/*
// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath
{
}
*/
/*
// Override to support conditional rearranging of the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the item to be re-orderable.
return YES;
}
*/
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
// Navigation logic may go here. Create and push another view controller.
/*
<#DetailViewController#> *detailViewController = [[<#DetailViewController#> alloc] initWithNibName:@"<#Nib name#>" bundle:nil];
// ...
// Pass the selected object to the new view controller.
[self.navigationController pushViewController:detailViewController animated:YES];
*/
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([segue.identifier isEqualToString:@"addAssignment"]) {
self.vc.delegate = (id)self;
}
}
@end
// // AddEditViewController.h
// AssignmentAppTwo
//
// Created by Abdel Elrafa on 10/11/13.
// Copyright (c) 2013 Abdel Elrafa. All rights reserved.
//
#import <UIKit/UIKit.h>
#import "AssignmentInfo.h"
@protocol AddAssignmentDelegate;
@interface AddEditViewController : UITableViewController
<
UITextFieldDelegate
>
{
IBOutlet UIDatePicker *dateTimePicker;
}
@property (nonatomic, strong) IBOutlet UITextField *className;
@property (nonatomic, strong) IBOutlet UITextField *assignmentTitle;
@property (nonatomic, strong) IBOutlet UITextField *assignmentDescription;
@property (nonatomic, strong) IBOutlet UISwitch *procrastinationNotificationSwitch;
@property (nonatomic,strong)AssignmentInfo *assignmentInfo;
@property (nonatomic, weak) id <AddAssignmentDelegate> delegate;
@end
@protocol ViewControllerDelegate <NSObject>
-(void)assignmentSaved:(AssignmentInfo *)classObj;
@end
// // AddEditViewController.m
// AssignmentAppTwo
//
// Created by Abdel Elrafa on 10/11/13.
// Copyright (c) 2013 Abdel Elrafa. All rights reserved.
//
#import "AddEditViewController.h"
#import "AssignmentInfo.h"
#import "AssignmentListViewController.h"
@interface AddEditViewController ()
@end
@implementation AddEditViewController
@synthesize delegate = _delegate;
-(void)dismissKeyboard {
[self.assignmentDescription resignFirstResponder];
[self.assignmentTitle resignFirstResponder];
[self.className resignFirstResponder];
}
- (IBAction)addAssignmentCancelButtonPressed:(id)sender {
[self dismissViewControllerAnimated:YES completion:nil];
}
-(void) presentMessage:(NSString *)totalStrings {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Class Stuff" message:totalStrings delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil];
[alert show];
}
-(void) procrastinationNotificationSwitchOnOrOff {
if (_procrastinationNotificationSwitch.on) {
self.assignmentInfo.notifcationStatus = YES;
}
else {
self.assignmentInfo.notifcationStatus = NO;
}
}
- (NSString*)dataFilePath
{
NSString *docDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *filePath = [docDir stringByAppendingPathComponent:@"AssignmentInfo.data"];
NSFileHandle *file = [NSFileHandle fileHandleForWritingAtPath:filePath];
if (!file) {
NSLog(@"Attempting to create the file");
if (![[NSFileManager defaultManager] createFileAtPath:filePath contents:nil attributes:nil]) {
NSLog(@"Failed to create file");
}
else
file = [NSFileHandle fileHandleForWritingAtPath:filePath];
NSLog(@"Pass to create file");
}
return filePath;
}
-(BOOL)textFieldShouldReturn:(UITextField *)textField
{
NSUInteger index = textField.tag;
if (index == 2) { // Last textField
[textField resignFirstResponder];
}else{
UITextField *nextTextField = (UITextField*)[self.view viewWithTag:index+1];
[nextTextField becomeFirstResponder];
}
return NO;
}
- (IBAction)addTheInfo:(id)sender {
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
dateFormatter.timeZone = [NSTimeZone defaultTimeZone];
dateFormatter.timeStyle = NSDateFormatterShortStyle;
dateFormatter.dateStyle = NSDateFormatterShortStyle;
NSString *dateTimeString = [dateFormatter stringFromDate: dateTimePicker.date];
self.assignmentInfo.className = self.className.text;
self.assignmentInfo.assignmentTitle = self.assignmentTitle.text;
self.assignmentInfo.assignmentDescription = self.assignmentDescription.text;
self.assignmentInfo.dateTimeString = dateTimeString;
[self presentMessage:self.assignmentInfo.description];
[self dismissViewControllerAnimated:YES completion:nil];
NSString *filePath = [self dataFilePath];
[NSKeyedArchiver archiveRootObject:self.assignmentInfo toFile:filePath];
\\ 我的错误在这里 vvvv
[self.delegate assignmentSaved:self.assignmentInfo];
NSLog(@"%@",self.delegate);
// 错误^^^^^^^
}
-(AssignmentInfo *)assignmentInfo
{
if (!_assignmentInfo) {
_assignmentInfo = [[AssignmentInfo alloc]init];
}
return _assignmentInfo;
}
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
[_procrastinationNotificationSwitch addTarget:self action:@selector(procrastinationNotificationSwitchOnOrOff) forControlEvents:UIControlEventValueChanged];
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(dismissKeyboard)];
[self.view addGestureRecognizer:tap]; // Do any additional setup after loading the view, typically from a nib.
self.assignmentInfo.notifcationStatus = YES;
self.className.tag = 0;
self.className.delegate = self;
self.assignmentTitle.tag = 1;
self.assignmentTitle.delegate = self;
self.assignmentDescription.tag = 2;
self.assignmentDescription.delegate = self;
AssignmentInfo *classUnarchived = [NSKeyedUnarchiver unarchiveObjectWithFile:[self dataFilePath]];
NSLog(@"%@" @"log of archive",classUnarchived.description);
// Uncomment the following line to preserve selection between presentations.
// self.clearsSelectionOnViewWillAppear = NO;
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
// Navigation logic may go here. Create and push another view controller.
/*
<#DetailViewController#> *detailViewController = [[<#DetailViewController#> alloc] initWithNibName:@"<#Nib name#>" bundle:nil];
// ...
// Pass the selected object to the new view controller.
[self.navigationController pushViewController:detailViewController animated:YES];
*/
}
@end
// // AssignmentInfo.h (模型)
// AssignmentAppTwo
//
// Created by Abdel Elrafa on 10/11/13.
// Copyright (c) 2013 Abdel Elrafa. All rights reserved.
//
#import <Foundation/Foundation.h>
@interface AssignmentInfo : NSObject
@property (nonatomic,strong)NSString *className;
@property (nonatomic,strong)NSString *assignmentDescription;
@property (nonatomic,strong)NSString *assignmentTitle;
@property (nonatomic,strong)NSString *dateTimeString;
@property (nonatomic)bool notifcationStatus;
-(id)initWithCoder:(NSCoder *)aDecoder;
-(void)encodeWithCoder:(NSCoder *)aCoder;
@end
// // AssignmentInfo.m (模型)
// AssignmentAppTwo
//
// Created by Abdel Elrafa on 10/11/13.
// Copyright (c) 2013 Abdel Elrafa. All rights reserved.
//
#import "AssignmentInfo.h"
@implementation AssignmentInfo
-(NSString *)description
{
return [NSString stringWithFormat:@"Class: %@\r Assignment Title: %@ \rAssignment Description: %@ \rDue: %@ \r%s", self.className, self.assignmentTitle, self.assignmentDescription, self.dateTimeString,self.notifcationStatus ? "Notification On" : "Notification Off"];
}
-(id)initWithCoder:(NSCoder *)aDecoder
{
self = [super init];
self.className = [aDecoder decodeObjectForKey:@"className"];
self.assignmentTitle = [aDecoder decodeObjectForKey:@"assignmentTitle"];
self.assignmentDescription = [aDecoder decodeObjectForKey:@"assignmentDescription"];
self.dateTimeString = [aDecoder decodeObjectForKey:@"dateTimeString"];
self.notifcationStatus = [aDecoder decodeObjectForKey:@"notifcationStatus"];
return self;
}
-(void)encodeWithCoder:(NSCoder *)aCoder
{
[aCoder encodeObject:self.className forKey:@"className"];
[aCoder encodeObject:self.assignmentTitle forKey:@"assignmentTitle"];
[aCoder encodeObject:self.assignmentDescription forKey:@"assignmentDescription"];
[aCoder encodeObject:self.dateTimeString forKey:@"dateTimeString"];
[aCoder encodeBool:self.notifcationStatus forKey:@"notificationStatus"];
}
@end
我在上面概述了我的错误。我放弃了，因为我不知道出了什么问题。