내 응용 프로그램에서 핵심 데이터에서 이미지를 저장하고 검색하려고합니다. 이미지를 성공적으로 NSim에 UIimage 후 이미지를 저장할 수 있지만 NSData 같이 이미지를 얻으려고 할 때 아래와 같이 출력을 보여줍니다.저장 및 CoreData UIImage 검색
경우 1 : DB에서 문자열로 표시하려고 할 때.
<Event: 0x5b5d610> (entity: Event; id: 0x5b5ce30 <x-coredata://F51BBF1D-6484-4EB6-8583-147E23D9FF7B/Event/p1> ; data: <fault>)
경우 2 : 데이터로
to save:
NSManagedObjectContext *context = [self managedObjectContext];
newsObj = [NSEntityDescription insertNewObjectForEntityForName:@"Event" inManagedObjectContext:context];
NSURL *url = [NSURL URLWithString:@"http://www.cimgf.com/images/photo.PNG"];
NSData *data = [[NSData alloc] initWithContentsOfURL:url];
uiImage = [UIImage imageWithData:data];
NSData * imageData = UIImagePNGRepresentation(uiImage);
[newsObj setValue:imageData forKey:@"imgPng"];
NSError *error;
@try{
if (managedObjectContext != nil) {
if (![managedObjectContext save:&error]) {
NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
NSString * infoString = [NSString stringWithFormat:@"Please check your connection and try again."];
UIAlertView * infoAlert = [[UIAlertView alloc] initWithTitle:@"Database Connection Error" message:infoString delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
[infoAlert show];
[infoAlert release];
}
}
}@catch (NSException *exception) {
NSLog(@"inside exception");
}
가 검색
[Event length]: unrecognized selector sent to instance 0x5b3a9c0
2010-07-28 19:11:59.610 IMG_REF[10787:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[Event length]: unrecognized selector sent to instance 0x5b3a9c0'
내 코드,
NSManagedObjectContext *context = [self managedObjectContext];
NSFetchRequest * fetchRequest = [[NSFetchRequest alloc] init];
NSEntityDescription *entity1 = [NSEntityDescription entityForName:@"Event" inManagedObjectContext:context];
[fetchRequest setEntity:entity1];
NSError *error;
NSArray * array = [self.managedObjectContext executeFetchRequest:fetchRequest error:&error];
if (array == nil) {
NSLog(@"Testing: No results found");
}else {
NSLog(@"Testing: %d Results found.", [array count]);
}
NSData * dataBytes = [[array objectAtIndex:0] data];
image = [UIImage imageWithData:dataBytes];
[fetchRequest release];
}
@catch (NSException *exception) {
NSLog(@"inside exception");
}
Error:
Testing: 3 Results found.
2010-07-28 23:27:51.343 IMG_REF[11657:207] -[Event data]: unrecognized selector sent to instance 0x5e22ce0
2010-07-28 23:27:51.344 IMG_REF[11657:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[Event data]: unrecognized selector sent to instance 0x5e22ce0'
*** Call stack at first throw:
(
0 CoreFoundation 0x02566919 __exceptionPreprocess + 185
1 libobjc.A.dylib 0x026b45de objc_exception_throw + 47
2 CoreFoundation 0x0256842b -[NSObject(NSObject) doesNotRecognizeSelector:] + 187
3 CoreFoundation 0x024d8116 ___forwarding___ + 966
4 CoreFoundation 0x024d7cd2 _CF_forwarding_prep_0 + 50
5 IMG_REF 0x00003b06 -[IMG_REFViewController showAction] + 353
6 UIKit 0x002bae14 -[UIApplication sendAction:to:from:forEvent:] + 119
7 UIKit 0x004c214b -[UIBarButtonItem(UIInternal) _sendAction:withEvent:] + 156
8 UIKit 0x002bae14 -[UIApplication sendAction:to:from:forEvent:] + 119
9 UIKit 0x003446c8 -[UIControl sendAction:to:forEvent:] + 67
10 UIKit 0x00346b4a -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 527
11 UIKit 0x003456f7 -[UIControl touchesEnded:withEvent:] + 458
12 UIKit 0x002de2ff -[UIWindow _sendTouchesForEvent:] + 567
13 UIKit 0x002c01ec -[UIApplication sendEvent:] + 447
14 UIKit 0x002c4ac4 _UIApplicationHandleEvent + 7495
15 GraphicsServices 0x02dccafa PurpleEventCallback + 1578
16 CoreFoundation 0x02547dc4 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 52
17 CoreFoundation 0x024a8737 __CFRunLoopDoSource1 + 215
18 CoreFoundation 0x024a59c3 __CFRunLoopRun + 979
19 CoreFoundation 0x024a5280 CFRunLoopRunSpecific + 208
20 CoreFoundation 0x024a51a1 CFRunLoopRunInMode + 97
21 GraphicsServices 0x02dcb2c8 GSEventRunModal + 217
22 GraphicsServices 0x02dcb38d GSEventRun + 115
23 UIKit 0x002c8b58 UIApplicationMain + 1160
24 IMG_REF 0x00002aac main + 102
25 IMG_REF 0x00002a3d start + 53
)
terminate called after throwing an instance of 'NSException'
주를 표시하려고 할 때 : 오류 위의 경우에오고있다 NSData * dataBytes = [[배열 objectAtIndex : 0] data]; 선. Data Model http://www.freeimagehosting.net/uploads/7c286931cc.png
나는 이것으로 많은 시간을 보냈다. 제발 도와주세요!
이미지를 NSData에 저장하는 방법과 검색 방법에 관한 코드를 추가하십시오. 애매한 오류 메시지가 많이 도움이되지 않습니다. – iwasrobbed
@IWasRobbed는 귀하의 응답에 감사 드리며이를 제 코드에 넣습니다. 내가 뭘 잘못했는지 알아봐. – Sivanathan