当我尝试启动解决方案提交视图控制器时，我的应用程序已经开始崩溃，它会引发以下异常，该异常引用先前版本的变量＆＃34; projectTitleTextField＆＃34;已被＆＃34; projectTitleSearchBar替换。＆＃34;我不明白为什么它会抛出异常，因为我用搜索栏替换了变量和链接对象，然后清理/构建了项目。请帮助，谢谢。
2014-04-22 23:51:50.515 AbleConnections[11005:60b]
*** Terminating app due to uncaught exception 'NSUnknownKeyException', reason:
'[<ABLSolutionSubmittalViewController 0x9952510> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key projectTitleTextField.'
*** First throw call stack:
(
0 CoreFoundation 0x018091e4 __exceptionPreprocess + 180
1 libobjc.A.dylib 0x015748e5 objc_exception_throw + 44
2 CoreFoundation 0x01898fe1 -[NSException raise] + 17
3 Foundation 0x01234d9e -[NSObject(NSKeyValueCoding) setValue:forUndefinedKey:] + 282
4 Foundation 0x011a11d7 _NSSetUsingKeyValueSetter + 88
5 Foundation 0x011a0731 -[NSObject(NSKeyValueCoding) setValue:forKey:] + 267
6 Foundation 0x01202b0a -[NSObject(NSKeyValueCoding) setValue:forKeyPath:] + 412
7 UIKit 0x004eb1f4 -[UIRuntimeOutletConnection connect] + 106
8 libobjc.A.dylib 0x015867de -[NSObject performSelector:] + 62
9 CoreFoundation 0x0180476a -[NSArray makeObjectsPerformSelector:] + 314
10 UIKit 0x004e9d4d -[UINib instantiateWithOwner:options:] + 1417
11 UIKit 0x003526f5 -[UIViewController _loadViewFromNibNamed:bundle:] + 280
12 UIKit 0x00352e9d -[UIViewController loadView] + 302
13 UIKit 0x003530d3 -[UIViewController loadViewIfRequired] + 78
14 UIKit 0x00379345 -[UINavigationController _layoutViewController:] + 39
15 UIKit 0x0037985b -[UINavigationController _updateScrollViewFromViewController:toViewController:] + 235
16 UIKit 0x00379953 -[UINavigationController _startTransition:fromViewController:toViewController:] + 78
17 UIKit 0x0037a8cc -[UINavigationController _startDeferredTransitionIfNeeded:] + 645
18 UIKit 0x0037b4e9 -[UINavigationController __viewWillLayoutSubviews] + 57
19 UIKit 0x004bc0d1 -[UILayoutContainerView layoutSubviews] + 213
20 UIKit 0x002a3964 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 355
21 libobjc.A.dylib 0x0158682b -[NSObject performSelector:withObject:] + 70
22 QuartzCore 0x03c6045a -[CALayer layoutSublayers] + 148
23 QuartzCore 0x03c54244 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 380
24 QuartzCore 0x03c540b0 _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 26
25 QuartzCore 0x03bba7fa _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 294
26 QuartzCore 0x03bbbb85 _ZN2CA11Transaction6commitEv + 393
27 QuartzCore 0x03bbc258 _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 92
28 CoreFoundation 0x017d136e __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 30
29 CoreFoundation 0x017d12bf __CFRunLoopDoObservers + 399
30 CoreFoundation 0x017af254 __CFRunLoopRun + 1076
31 CoreFoundation 0x017ae9d3 CFRunLoopRunSpecific + 467
32 CoreFoundation 0x017ae7eb CFRunLoopRunInMode + 123
33 GraphicsServices 0x037e95ee GSEventRunModal + 192
34 GraphicsServices 0x037e942b GSEventRun + 104
35 UIKit 0x00234f9b UIApplicationMain + 1225
36 AbleConnections 0x000047bd main + 141
37 libdyld.dylib 0x01e3c701 start + 1
38 ??? 0x00000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
// ABLSolutionSubmittalViewController.m
// AbleConnections
// Created by Padft12Laws2Liv on 4/21/14.
// Copyright (c) 2014 ABLE LLC. All rights reserved.
#import "ABLSolutionSubmittalViewController.h"
@interface ABLSolutionSubmittalViewController ()
@property (weak, nonatomic) IBOutlet UISearchBar *projectTitleSearchBar;
//In previous version ^this line read UITextField *projectTitleTextField;
@property (weak, nonatomic) IBOutlet UITextField *countryTextField;
@property (weak, nonatomic) IBOutlet UITextField *solutionTitleTextField;
@property (weak, nonatomic) IBOutlet UITextView *solutionDescriptionTextView;
@property (weak, nonatomic) IBOutlet UITextView *requiredResourcesTextView;
@property (weak, nonatomic) IBOutlet UIBarButtonItem *saveButton;
@end
@implementation ABLSolutionSubmittalViewController
- (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.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if (sender != self.saveButton) return;
if (self.solutionTitleTextField.text.length > 0) {
self.solutionSubmission = [[ABLSolutionSubmission alloc] init];
self.solutionSubmission.PROJECT_TITLE = self.projectTitleSearchBar.text;
self.solutionSubmission.COUNTRY_OF_ORIGIN = self.countryTextField.text;
self.solutionSubmission.SOLUTION_TITLE = self.solutionTitleTextField.text;
self.solutionSubmission.solutionDescription = self.solutionDescriptionTextView.text;
self.solutionSubmission.requiredResources = self.requiredResourcesTextView.text;
}
}
@end
答案 0 :(得分：2)
签入xib projectTitleTextField是否与某人相关联。如果它在那里那么应该有警告，所以请删除它。干净并建立项目。也尝试从模拟器中删除应用程序。