另一个这个类不是键值imageView的键值编码兼容

Question

我已经坚持这个问题多年了,我已经浏览堆栈溢出的答案,但他们似乎没有工作.我尝试删除所有原始连接,然后再次连接它们没有运气.一切都编译好,但我收到这个错误:

*** Terminating app due to uncaught exception 'NSUnknownKeyException', reason:   '[<UIApplication 0x6a067d0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key imageView.'
*** First throw call stack:
(0x11e4052 0x1375d0a 0x11e3f11 0xa4c032 0x9bdf7b 0x9bdeeb 0x9d8d60 0x2cb91a 0x11e5e1a 0x114f821 0x2ca46e 0x2cc010 0xac14a 0xac461 0xab7c0 0xba743 0xbb1f8 0xaeaa9 0x1c84fa9 0x11b81c5 0x111d022 0x111b90a 0x111adb4 0x111accb 0xab2a7 0xaca9b 0x2072 0x1fe5)
terminate called throwing an exception

我也在我的main.m中收到"线程1接收信号"SIGABRT"消息

0x000ac97f  <+0891>  mov    %eax,(%esp)
0x000ac982  <+0894>  call   0x5478b2 <dyld_stub_objc_msgSend>
0x000ac987  <+0899>  mov    %eax,%esi
0x000ac989  <+0901>  mov    0x69940e(%edi),%eax
0x000ac98f  <+0907>  mov    0x68db46(%edi),%ecx
0x000ac995  <+0913>  lea    0x525009(%edi),%edx
0x000ac99b  <+0919>  mov    %edx,0x8(%esp)
0x000ac99f  <+0923>  mov    %ecx,0x4(%esp)
0x000ac9a3  <+0927>  mov    %eax,(%esp)
0x000ac9a6  <+0930>  call   0x5478b2 <dyld_stub_objc_msgSend>
0x000ac9ab  <+0935>  mov    0x68df86(%edi),%ecx
0x000ac9b1  <+0941>  mov    %ebx,0x18(%esp)
0x000ac9b5  <+0945>  lea    0x6a6c56(%edi),%edx
0x000ac9bb  <+0951>  mov    %edx,0x14(%esp)
0x000ac9bf  <+0955>  mov    %eax,0xc(%esp)
0x000ac9c3  <+0959>  mov    %esi,0x8(%esp)
0x000ac9c7  <+0963>  mov    %ecx,0x4(%esp)
0x000ac9cb  <+0967>  mov    -0x18(%ebp),%eax
0x000ac9ce  <+0970>  mov    %eax,(%esp)
0x000ac9d1  <+0973>  movl   $0x641,0x10(%esp)
0x000ac9d9  <+0981>  call   0x5478b2 <dyld_stub_objc_msgSend>
0x000ac9de  <+0986>  mov    0x699476(%edi),%eax
0x000ac9e4  <+0992>  mov    0x68db72(%edi),%ecx
0x000ac9ea  <+0998>  mov    %ecx,0x4(%esp)
0x000ac9ee  <+1002>  mov    %eax,(%esp)
0x000ac9f1  <+1005>  call   0x5478b2 <dyld_stub_objc_msgSend>
0x000ac9f6  <+1010>  mov    0x68df92(%edi),%ecx
0x000ac9fc  <+1016>  mov    %eax,0x8(%esp)
0x000aca00  <+1020>  mov    %ecx,0x4(%esp)
0x000aca04  <+1024>  mov    -0x10(%ebp),%esi
0x000aca07  <+1027>  mov    %esi,(%esp)
0x000aca0a  <+1030>  call   0x5478b2 <dyld_stub_objc_msgSend>
0x000aca0f  <+1035>  mov    0x6d0fbe(%edi),%ebx
0x000aca15  <+1041>  test   %al,%al
0x000aca17  <+1043>  je     0xaca2c <UIApplicationMain+1064>
0x000aca19  <+1045>  mov    0x68dbb6(%edi),%eax
0x000aca1f  <+1051>  mov    %ebx,0x8(%esp)
0x000aca23  <+1055>  mov    %eax,0x4(%esp)
0x000aca27  <+1059>  mov    %ebx,(%esp)
0x000aca2a  <+1062>  jmp    0xaca69 <UIApplicationMain+1125>
0x000aca2c  <+1064>  mov    0x68dc0a(%edi),%eax
0x000aca32  <+1070>  mov    %eax,0x4(%esp)
0x000aca36  <+1074>  mov    %esi,(%esp)
0x000aca39  <+1077>  call   0x5478b2 <dyld_stub_objc_msgSend>
0x000aca3e  <+1082>  mov    0x68dcba(%edi),%ecx
0x000aca44  <+1088>  mov    %ecx,0x4(%esp)
0x000aca48  <+1092>  mov    %eax,(%esp)
0x000aca4b  <+1095>  call   0x5478b2 <dyld_stub_objc_msgSend>
0x000aca50  <+1100>  mov    0x68df96(%edi),%ecx
0x000aca56  <+1106>  mov    %eax,0x8(%esp)
0x000aca5a  <+1110>  mov    %ecx,0x4(%esp)
0x000aca5e  <+1114>  mov    %ebx,(%esp)
0x000aca61  <+1117>  movl   $0x1,0xc(%esp)
0x000aca69  <+1125>  call   0x5478b2 <dyld_stub_objc_msgSend>
0x000aca6e  <+1130>  mov    0x68db22(%edi),%eax
0x000aca74  <+1136>  mov    %eax,0x4(%esp)
0x000aca78  <+1140>  mov    -0x14(%ebp),%eax
0x000aca7b  <+1143>  mov    %eax,(%esp)
0x000aca7e  <+1146>  call   0x5478b2 <dyld_stub_objc_msgSend>
0x000aca83  <+1151>  mov    0x6d0fbe(%edi),%eax
0x000aca89  <+1157>  mov    0x68df9a(%edi),%ecx
0x000aca8f  <+1163>  mov    %ecx,0x4(%esp)
0x000aca93  <+1167>  mov    %eax,(%esp)
0x000aca96  <+1170>  call   0x5478b2 <dyld_stub_objc_msgSend>
0x000aca9b  <+1175>  xor    %eax,%eax
0x000aca9d  <+1177>  add    $0x2c,%esp
0x000acaa0  <+1180>  pop    %esi
0x000acaa1  <+1181>  pop    %edi
0x000acaa2  <+1182>  pop    %ebx
0x000acaa3  <+1183>  pop    %ebp
0x000acaa4  <+1184>  ret

下面是我的xib图片,文件所有者自定义类设置为ViewController就像它应该的那样.

http://i.imgur.com/aqFo9.png

我真的需要帮助,这已经发生了几天.我从头开始重新制作这个项目并没有运气.如果需要,我可以提出我的ViewController.h和ViewController.m代码.我将imageView声明为"@property(nonatomic,retain)IBOutlet UIImageView*imageView;"

非常感谢帮助.我对目标C和Xcode的编程还很陌生.

这是ViewController.h:

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController <UIImagePickerControllerDelegate,   UINavigationControllerDelegate>

{

BOOL newMedia;

}

@property (nonatomic, retain) IBOutlet UIImageView *imageView;

- (IBAction) useCamera;
- (IBAction) useCameraRoll;

@end

这是ViewController.m:

#import "ViewController.h"
#import "MobileCoreServices/UTCoreTypes.h"

@implementation ViewController

@synthesize imageView;

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Release any cached data, images, etc that aren't in use.
}

#pragma mark - View lifecycle

- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}

- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}

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

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

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

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

- (BOOL)shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
} else {
    return YES;
}
}

-(void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary *)info
{
NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];

[self dismissModalViewControllerAnimated:YES];

if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) {
    UIImage *image = [info 
                      objectForKey:UIImagePickerControllerOriginalImage];

    imageView.image = image;

    if (newMedia)
        UIImageWriteToSavedPhotosAlbum(image, 
                                       self,
                                         @selector(image:finishedSavingWithError:contextInfo:),
                                       nil);
}
else if ([mediaType isEqualToString:(NSString *)kUTTypeMovie])
{
    // Code here to support video if enabled
}
}

-(void)image:(UIImage *)image
finishedSavingWithError:(NSError *)error 
 contextInfo:(void *)contextInfo
{
if (error) {
    UIAlertView *alert = [[UIAlertView alloc]
                          initWithTitle: @"Save failed"
                          message: @"Failed to save image"
                          delegate: nil
                          cancelButtonTitle:@"OK"
                          otherButtonTitles:nil];
    [alert show];
    [alert release];
}
}


-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
[self dismissModalViewControllerAnimated:YES];
}

- (IBAction) useCamera

{
if ([UIImagePickerController isSourceTypeAvailable:
     UIImagePickerControllerSourceTypeCamera])
{
    NSLog(@"you reached here for camera");

    UIImagePickerController *imagePicker =
    [[UIImagePickerController alloc] init];
    imagePicker.delegate = self;
    imagePicker.sourceType = 
    UIImagePickerControllerSourceTypeCamera;
    imagePicker.mediaTypes = [NSArray arrayWithObjects:
                              (NSString *) kUTTypeImage,
                              nil];
    imagePicker.allowsEditing = NO;
    [self presentModalViewController:imagePicker animated:YES];
    [imagePicker release];
    newMedia = YES;
}



}


- (IBAction) useCameraRoll

{
    if ([UIImagePickerController isSourceTypeAvailable:
         UIImagePickerControllerSourceTypeSavedPhotosAlbum])
{
    NSLog(@"you reached here for camera roll");

    UIImagePickerController *imagePicker =
    [[UIImagePickerController alloc] init];
    imagePicker.delegate = self;
    imagePicker.sourceType = 
    UIImagePickerControllerSourceTypePhotoLibrary;
    imagePicker.mediaTypes = [NSArray arrayWithObjects:
                              (NSString *) kUTTypeImage,
                              nil];
    imagePicker.allowsEditing = NO;
    [self presentModalViewController:imagePicker animated:YES];
    [imagePicker release];
    newMedia = NO;
}

}






@end

Answer 1

看起来你正试图将你imageView的一个XIB中的插座连接到UIApplication而不是你的ViewController.我建议从连接它的地方取下插座再试一次.确保右键单击视图控制器的XIB的文件所有者,然后将点从imageView那里拖到图像视图对象.

更新:

看了你发布的项目后,我确切地看到了你的问题.您已ViewController在项目设置中设置为"主窗口XIB".删除它,一切都很好.但是,您还有一个窗口ViewController.xib而不是视图.您在该窗口中有一个视图,因此只需从该窗口拉出视图并删除该窗口.

如果您对"主窗口XIB"设置感到困惑,那么我会尝试解释一下.应用程序启动的方式有两种:

1. 您将应用程序委托的类名称作为第四个参数传递给UIApplicationMain.这将实例化一个,然后在applicationDidFinishLaunchingWithOptions:方法期间,您需要创建一个窗口,将视图控制器设置为它,rootViewController并使其键和可见.

2. 您传递nil作为类的名称UIApplicationMain并设置主窗口XIB.这意味着XIB已实例化,并且在其中您需要具有应用程序委托的实例和具有根视图控制器的窗口全部设置."文件所有者"将是一个UIApplication实例,您可以将其中的委托插座设置为您在XIB中的应用程序委托对象.然后在applicationDidFinishLaunchingWithOptions:你只需要做make键和可见步骤.