iphone - 找不到Xcode错误实例方法-addAttachment withImageNamed

我的项目中出现错误，我得到了Xcode错误实例方法-addAttachment withImageNamed，以下是我的一些代码:

HegakaDragAndDropRecycleBinViewController.h

@interface HegakaDragAndDropRecycleBinViewController : UIViewController {
IBOutlet GalleryScrollView *gallery;

}
-(NSString*)withImageNamed;

@property (nonatomic, retain) IBOutlet GalleryScrollView *gallery;
@end

HegakaDragAndDropRecycleBinViewController.m

#import "HegakaDragAndDropRecycleBinViewController.h"
#import "AttachmentItem.h"

@implementation HegakaDragAndDropRecycleBinViewController

@synthesize gallery;

- (void)dealloc
{
[super dealloc];
}

- (void)didReceiveMemoryWarning
{
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];

// Release any cached data, images, etc that aren't in use.
}

#pragma mark - View lifecycle

- (void)viewDidLoad
 {
[super viewDidLoad];
self.gallery.mainView = self.view;


AttachmentItem *item = [[AttachmentItem alloc] initWithData:1 data:nil];
[self.gallery addAttachment:item withImageNamed:@"recyclebin"];
[self.gallery addAttachment:item withImageNamed:@"canadian-maple"];
[self.gallery addAttachment:item withImageNamed:@"light-cherry"];
[self.gallery addAttachment:item withImageNamed:@"mozambique-wenge"];
[self.gallery addAttachment:item withImageNamed:@"canadian-maple"];

[item release];
}

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

    - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

@end

我在实现行和此处收到警报警告:

[self.gallery addAttachment:item withImageNamed:@"recyclebin"];
[self.gallery addAttachment:item withImageNamed:@"canadian-maple"];
[self.gallery addAttachment:item withImageNamed:@"light-cherry"];
[self.gallery addAttachment:item withImageNamed:@"mozambique-wenge"];
[self.gallery addAttachment:item withImageNamed:@"canadian-maple"];

该项目仍在运行，但是有这6条警告。

非常感谢您的协助。

谢谢

最佳答案

确保您的类AttachmentItem在其头文件中声明了addAttachment:withImageNamed: