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多年来我一直被这个问题困扰，我浏览了关于堆栈溢出的答案，但它们似乎没有用。我尝试删除所有原始连接，然后再次连接它们，但没有成功。一切编译正常，但我收到此错误:
*** 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
我还在我的 main.m 中收到“Thread 1 received signal”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
这是我的 xib 的图片，File Owner 自定义类设置为 ViewController，就像它应该的那样。
拜托，我真的需要这方面的帮助，这已经发生了几天了。我从头开始重新制作了这个项目，但运气不佳。如果需要，我可以提供我的 ViewController.h 和 ViewController.m 代码。我将 imageView 声明为“@property (nonatomic, retain) IBOutlet UIImageView *imageView;”
帮助将不胜感激。我对使用 Objective C 和 Xcode 进行编程还是很陌生。
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