@TXによって解決されます。コード内の「//SOLUTION」で変更をマークしました!!!
次の問題があります。presentModalViewControllerを使用すると、NSMutableArray"projectsArray"がリセットされます。
これが私のコードです：
ここに.hファイルがあります：
// ViewController.h
#import <UIKit/UIKit.h>
@class AddProject;
@interface ViewController : UIViewController <UITableViewDelegate, UITableViewDataSource>
{
IBOutlet UITableView *projectsTableView;
UIAlertView *reallyDelete;
BOOL candelButtonClicked;
NSIndexPath *actualIndexPath;
NSMutableArray *projectsArray;
NSInteger ID;
NSString *NAME;
AddProject *addProject;
**ViewController *viewContr; // SOLUTION**
}
- (IBAction)addNewProject:(id)sender;
- (void)addToTableView:(NSString *)projectName;
@property (nonatomic, retain) UIAlertView *reallyDelete;
@property (nonatomic) NSInteger cancelButtonIndex;
@property IBOutlet UITableView *projectsTableView;
@property (nonatomic, retain) AddProject *addProject;
**@property (nonatomic, retain) ViewController *viewContr; // SOLUTION**
@end
ここに.mファイルがあります：
// ViewController.m
#import "ViewController.h"
#import "CustomTableCell.h"
#import "AddProject.h"
@interface ViewController ()
@end
@implementation ViewController
**@synthesize viewContr; // SOLUTION**
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
projectsArray = [[NSMutableArray alloc] init];
ViewController *element = [[ViewController alloc] init];
element->ID = 1;
element->NAME = @"Demo project";
NSLog(@"viewdidload");
[projectsArray addObject:element];
NSLog(@"1. Array length: %d", [projectsArray count]);
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if ([projectsArray count] < 1) {
NSLog(@"2. Array length: 0");
return 0;
} else {
NSLog(@"2. Array length: %d", [projectsArray count]);
return [projectsArray count];
}
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return 78;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *customTableCellIdentifier = @"CustomTableCell";
CustomTableCell *cell = (CustomTableCell *)[tableView dequeueReusableCellWithIdentifier:customTableCellIdentifier];
if (cell == nil)
{
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"CustomTableCell" owner:self options:nil];
cell = [nib objectAtIndex:0];
}
ViewController *element = [[ViewController alloc] init];
element = [projectsArray objectAtIndex:indexPath.row];
cell.nameLabel.text = element->NAME;
cell.prepTimeLabel.text = [NSString stringWithFormat:@"%i", element->ID];
NSLog(@"3. Array length: %d", [projectsArray count]);
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
}
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
if (editingStyle == UITableViewCellEditingStyleDelete) {
// Delete the row from the data source
reallyDelete = [[UIAlertView alloc] initWithTitle:@"Deleting" message:@"Do your really want to delete that row?" delegate:self cancelButtonTitle:@"No" otherButtonTitles:@"Yes", nil];
[reallyDelete show];
actualIndexPath = indexPath;
}
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex != [reallyDelete cancelButtonIndex])
{
//If "Yes" clicked delete
[projectsArray removeObjectAtIndex:actualIndexPath.row];
NSLog(@"delete row");
[self.projectsTableView deleteRowsAtIndexPaths:[NSMutableArray arrayWithObjects:actualIndexPath, nil] withRowAnimation:YES];
[self.projectsTableView reloadData];
}
}
#pragma mark Edit
- (IBAction)addNewProject:(id)sender {
NSLog(@"4. Array length: %d", [projectsArray count]);
AddProject *addProjectView = [[AddProject alloc] initWithNibName:@"AddProject" bundle:nil];
NSLog(@"4.1 Array length: %d", [projectsArray count]);
addProjectView.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
NSLog(@"4.2 Array length: %d", [projectsArray count]);
addProjectView.modalPresentationStyle = UIModalPresentationFormSheet;
NSLog(@"4.3 Array length: %d", [projectsArray count]);
**addProjectView.viewContr = self; // SOLUTION**
[self presentModalViewController:addProjectView animated:YES];
NSLog(@"4.4 Array length: %d", [projectsArray count]);
addProjectView.view.superview.frame = CGRectMake(addProjectView.view.center.x/2.5, addProjectView.view.center.y/3, 800, 600);
NSLog(@"4.5 Array length: %d", [projectsArray count]);
}
- (void)addToTableView:(NSString *)projectName
{
NSLog(@"Project Array: %@", projectsArray);
NSLog(@"addToTableView: %@", projectName);
NSLog(@"5. Array length: %d", [projectsArray count]);
ViewController *element = [[ViewController alloc] init];
element->ID = 2;
element->NAME = projectName;
[projectsArray addObject:element];
NSLog(@"6. Array length: %d", [projectsArray count]);
[self.projectsTableView reloadData];
[self.projectsTableView setNeedsDisplay];
}
- (void)viewDidUnload
{
[self setProjectsTableView:nil];
self.projectsTableView = nil;
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return YES;
}
@end
ここに、モーダル表示ビューの.hファイルがあります。
// AddProject.h
#import <UIKit/UIKit.h>
@class ViewController;
@interface AddProject : UIViewController
{
IBOutlet UITextField *projectName;
ViewController *viewContr;
}
- (IBAction)back:(id)sender;
- (IBAction)next:(id)sender;
@property (nonatomic, retain) ViewController *viewContr;
@end
モーダル提示ファイルの.mファイル：
// AddProject.m
#import "AddProject.h"
#import "ViewController.h"
@interface AddProject ()
@end
@implementation AddProject
**@synthesize viewContr; // SOLUTION I've mist to synthesize it**
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
**// SOLUTION no new allocation/init of ViewController**
}
- (IBAction)back:(id)sender
{
[self dismissModalViewControllerAnimated:YES];
}
- (IBAction)next:(id)sender
{
[viewContr addToTableView:projectName.text];
[viewContr.projectsTableView reloadData];
[viewContr.projectsTableView setNeedsDisplay];
[self dismissModalViewControllerAnimated:YES];
}
- (void)viewDidUnload
{
projectName = nil;
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return YES;
}
@end
ブレークポイントを使用してコードをテストしましたが、AddProjectクラス「viewDidLoad」の読み込みが開始されたときに問題を見つけることができました。しかし、なぜそれがアレイをリセットするのかわかりません。