这是我想要完成的事情的简要说明：
- 主要
UIViewController是一个UITableViewController - 点击一个单元格将用户带到一个新的
UIViewController地方，他们可以在其中输入文本并保存它 - 用户可以预览保存在另一个上的所有文本
UIViewController - 当用户在 Main 中重新排列表格时
UIViewController，用户可以在 Preview 中看到更改
重新排列 后如何更改/移动预览上的文本UIViewController？UITableViewController
非常感谢任何一般方法、提示、教程、示例！
谢谢！
编辑，这是我的代码：
单例.h
#import <Foundation/Foundation.h>
@interface MyInformation : NSObject
{
NSMutableArray * informationArray;
NSMutableString * nameString;
NSMutableString * jobString;
}
@property (nonatomic, retain) NSMutableArray * informationArray;
@property (nonatomic, retain) NSMutableString * nameString;
@property (nonatomic, retain) NSMutableString * jobString;
+ (id)sharedInformation;
@end
单例.m
#import "MyInformation.h"
@implementation MyInformation
static MyInformation * _sharedMyInformation = nil;
@synthesize informationArray = _informationArray;
@synthesize nameString = _nameString;
@synthesize jobString = _jobString;
#pragma mark Singleton Methods
+ (id)sharedInformation
{
@synchronized(self)
{
if (_sharedMyInformation == nil)
{
_sharedMyInformation = [[self alloc] init];
}
}
return _sharedMyInformation;
}
- (id)init
{
if (self = [super init])
{
_nameString = [[NSMutableString alloc] init];
_jobString = [[NSMutableString alloc] init];
_informationArray = [[NSMutableArray alloc] initWithObjects:_nameString, _jobString, nil];
}
return self;
}
@end
视图控制器.m
- (void)viewDidLoad
{
[super viewDidLoad];
if ([[UIScreen mainScreen] bounds].size.height == 568)
{
self.aTableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, 320, 1136) style:UITableViewStyleGrouped];
self.aTableView.delegate = self;
self.aTableView.dataSource = self;
[self.view addSubview:self.aTableView];
self.editBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Edit" style:UIBarButtonItemStylePlain target:self action:@selector(editButtonTapped)];
self.navigationItem.rightBarButtonItem = self.editBarButtonItem;
}
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self.aTableView reloadData];
}
- (void)editButtonTapped
{
if (self.editing)
{
[super setEditing:NO animated:NO];
[self.aTableView setEditing:NO animated:NO];
[self.aTableView reloadData];
[self.editBarButtonItem setTitle:@"Edit"];
[self.navigationItem.rightBarButtonItem setStyle:UIBarButtonItemStylePlain];
}
else
{
[super setEditing:YES animated:YES];
[self.aTableView setEditing:YES animated:YES];
[self.aTableView reloadData];
[self.editBarButtonItem setTitle:@"Done"];
[self.editBarButtonItem setStyle:UIBarButtonItemStyleDone];
}
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 2;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
MyInformation * myInformation = [MyInformation sharedInformation];
int count = [myInformation.informationArray count];
if (section == 0)
{
return count;
}
else if (section == 1)
{
return 1;
}
return count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString * CellIdentifier = @"CellIdentifier";
UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
MyInformation * myInformation = [MyInformation sharedInformation];
if (indexPath.section == 0 && indexPath.row == 0)
{
cell.textLabel.text = [NSString stringWithFormat:@"%@", myInformation.nameString];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}
if (indexPath.section == 0 && indexPath.row == 1)
{
cell.textLabel.text = [NSString stringWithFormat:@"%@", myInformation.jobString];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}
if (indexPath.section == 1 && indexPath.row == 0)
{
cell.textLabel.text = @"Preview";
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
if (indexPath.section == 0 && indexPath.row == 0)
{
NameViewController * name = [[NameViewController alloc] initWithNibName:@"NameViewController" bundle:nil];
[self.navigationController pushViewController:name animated:YES];
}
if (indexPath.section == 0 && indexPath.row == 1)
{
JobViewController * job = [[JobViewController alloc] initWithNibName:@"JobViewController" bundle:nil];
[self.navigationController pushViewController:job animated:YES];
}
if (indexPath.section == 1 && indexPath.row == 0)
{
PreviewViewController * preview = [[PreviewViewController alloc] initWithNibName:@"PreviewViewController" bundle:nil];
[self.navigationController pushViewController:preview animated:YES];
}
}
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath toIndexPath:(NSIndexPath *)destinationIndexPath
{
MyInformation * myInformation = [MyInformation sharedInformation];
NSString * item = [myInformation.informationArray objectAtIndex:sourceIndexPath.row];
[myInformation.informationArray removeObjectAtIndex:sourceIndexPath.row];
[myInformation.informationArray insertObject:item atIndex:destinationIndexPath.row];
}
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.section == 0 )
{
return YES;
}
else
{
return NO;
}
}
@end
编辑2：
我不相信我的阵列正在更新。
这是我的保存代码的示例：
- (IBAction)saveButtonTapped
{
MyInformation * myInformation = [MyInformation sharedInformation];
if (_nameTextField.text == nil)
{
myInformation.nameString = @"";
}
else
{
[myInformation.nameString setString:@""];
[myInformation.nameString appendFormat:@"%@", _nameTextField.text];
}
[self.navigationController popToRootViewControllerAnimated:YES];
}
在此日志中，nameString 确实会更新为我输入并保存的任何文本。
但是我的 informationArray 总是返回为 ("", "")
编辑 3 和 4：
使用设置的字符对单例中的字符串进行硬编码。
现在我可以重新安排我的桌子，这很好。
以下是更新后的代码。当我重新排列表格时，预览页面上的标签会重新排列。
这是代码：
- (void)viewDidLoad
{
[super viewDidLoad];
MyInformation * myInformation = [MyInformation sharedInformation];
_nameLabel = [[UILabel alloc] init];
_nameLabel.frame = CGRectMake(20, 20, 300, 44);
_nameLabel.text = [NSString stringWithFormat:@"%@", [myInformation.informationArray objectAtIndex:0]];
_jobLabel = [[UILabel alloc] init];
_jobLabel.frame = CGRectMake(50, 50, 300, 44);
_jobLabel.text = [NSString stringWithFormat:@"%@", [myInformation.informationArray objectAtIndex:1]];
[self.view addSubview:_nameLabel];
[self.view addSubview:_jobLabel];
}
编辑 5：
剩下要做的唯一事情是如何更新单例和 UITableViewCells 中的字符串中的文本？
编辑 6：
我解决了这个问题。我不得不将 Singleton 中的字符串更改为 NSMutableStrings。我修改了我的保存按钮代码以将字符串设置为空值并将其附加到文本字段文本中。在此之后，它现在按预期工作！
感谢您的帮助和建议！