当设置视图控制器实例的应用程序崩溃

Question

我正在尝试为segue做准备，但是当我设置了VC的实例时，我得到一个线程1信号sigabrt错误。我导入VC，#import "NoteViewController.h"

而且在我的Segue公司准备：

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { 
if ([segue.identifier isEqualToString:@"ShowNote"]) { 
    NoteDetailViewController *noteDetailViewController = [segue destinationViewController]; 
    NSIndexPath *selectedIndexPath = self.tableView.indexPathForSelectedRow; 
    NSInteger arrayItem = selectedIndexPath.row * 2; 
    noteDetailViewController.note = [_notes objectAtIndex:arrayItem]; 
} else if ([segue.identifier isEqualToString:@"AddNote"]) { 
    Note *note = [Note new]; 
    [self.notes addObject:note]; 
    NoteDetailViewController *noteDetailViewController = [segue destinationViewController]; // ERROR COMES HERE! 
    noteDetailViewController.note = note; 
} 
} 

我已经调试在过去的30分钟，但我无法弄清楚发生了什么。谢谢！

编辑：

我可能已经找到了问题;

***终止应用程序由于未捕获的异常“NSInvalidArgumentException”，理由是：“试图插入非财产清单对象（ ‘’ ）关键Notes数据”

这里是我的VC代码。

#import "NotesListTableViewController.h" 
#import "Note.h" 
#import "NoteDetailViewController.h" 

@interface NotesListTableViewController() 

@property (nonatomic, strong) NSMutableArray *notes; 

@end 

@implementation NotesListTableViewController 

- (id)initWithCoder:(NSCoder *)aDecoder { 
self = [super initWithCoder:aDecoder]; 

if (self) { 
    _notes = [[NSUserDefaults standardUserDefaults] 
       mutableArrayValueForKey:@"notesData"];; 
} 

return self; 
} 

- (void)viewWillAppear:(BOOL)animated { 
[super viewWillAppear:animated]; 

[self.tableView reloadData]; 
} 


- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { 
// Return the number of rows in the section. 
return [self.notes count]; 
} 


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"NotesCell" forIndexPath:indexPath]; 
     cell.textLabel.text = [_notes objectAtIndex:indexPath.row * 2]; 
    // cell.textLabel.text = [self.notes[indexPath.row] title]; 
     cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; 

return cell; 
} 

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath { 

NSInteger titleToDelete = indexPath.row * 2; 
NSInteger messageToDelete = titleToDelete - 1; 

[_notes removeObjectAtIndex:titleToDelete]; 
[_notes removeObjectAtIndex:messageToDelete]; 
[[NSUserDefaults standardUserDefaults]setObject:_notes forKey:@"notesData"]; 

[self.notes removeObjectAtIndex:indexPath.row]; 
[self.tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic]; 
} 



- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { 

if ([segue.identifier isEqualToString:@"ShowNote"]) { 
    NoteDetailViewController *noteDetailViewController = [segue destinationViewController]; 
    NSIndexPath *selectedIndexPath = self.tableView.indexPathForSelectedRow; 
    NSInteger arrayItem = selectedIndexPath.row * 2; 
    noteDetailViewController.note = [_notes objectAtIndex:arrayItem]; 
} else if ([segue.identifier isEqualToString:@"AddNote"]) { 
    Note *note = [Note new]; 
    [self.notes addObject:note]; 
    NoteDetailViewController *noteDetailViewController = [segue destinationViewController]; 
    noteDetailViewController.note = note; 
} 
} 



- (IBAction)doneButton:(id)sender { 

[self dismissViewControllerAnimated:YES completion:nil]; 

} 

@end 

Answer 1

我认为这是错误从这里 _notes = [[NSUserDefaults的standardUserDefaults] mutableArrayValueForKey：@ “Notes数据”];

也许你得到这个错误，试试这个答案 https://stackoverflow.com/a/19720674/2680768