在目標文件中使用未聲明的標識符

Question

編譯器因爲擁有未聲明的標識符而被標記，並想知道什麼是解決此問題的最佳方法？

這是我第一次使用plist來存儲數據，所以我不確定最好的方法是什麼。謝謝。

有評論出錯誤消息：

Destination.h

#import "Destination.h" 

@implementation Destination 

@synthesize coordinate = _coordinate; 
@synthesize title = _title; 
@synthesize subtitle = _subtitle; 
@synthesize destinationName = _destinationName; 
@synthesize destinationImage = _destinationImage; 

-(id)initWithDestinationIndex:(NSUInteger)destinationIndex { 
    if (self = [super init]) { 
    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"Destinations" ofType:@"plist"]; 
    NSDictionary *destinations = [NSDictionary dictionaryWithContentsOfFile:filePath]; 
    NSArray *destinationsArray = [destinations objectForKey:@"DestinationData"]; 
    NSDictionary *data = [destinationsArray objectAtIndex:destinationIndex]; 

    self.destinationImage = [UIImage imageNamed:[data objectForKey:@"DestinationImage"]]; 
    self.destinationName = [data objectForKey:@"DestinationName"]; 
    NSDictionary* destinationLocation = [data objectForKey:@"DestinationLocation"]; 
    destinationCoordinate.latitude = [[destinationLocation objectForKey:@"Latitude"]doubleValue];// Use of undeclared identifier 'destinationCoordinate' 
    destinationCoordinate.longitude = [[destinationLocation objectForKey:@"Longitude"]doubleValue];// Use of undeclared identifier 'destinationCoordinate' 
    self.coordinate = destinationCoordinate;//Use of undeclared identifier 'destinationCoordinate' 
    self.title = [destinationLocation objectForKey:@"Title"]; 
    self.subtitle = [destinationLocation objectForKey:@"Subtitle"]; 
    } 
    return self; 
} 

-(UIImage *)destinationImage { 
    return destination.destinationImage;//Use of undeclared identifier 'destination'; did you mean 'Destination'? 
} 

-(NSString *)destinationName { 
    return destinationName;//Use of undeclared identifer 'destinationName'; did you mean '_destinationName'? 
} 

-(CLLocationCoordinate2D)destinationCoordinate { 
    return destination.coordinate;//Use of undeclared 'destination'; did you mean 'Destination' 
} 

@end 

Destination.h

#import <Foundation/Foundation.h> 
#import <MapKit/MapKit.h> 

@interface Destination : NSObject<MKAnnotation> 

@property(nonatomic,readwrite)CLLocationCoordinate2D coordinate; 
@property(nonatomic,readwrite,copy)NSString *title; 
@property(nonatomic,readwrite,copy)NSString *subtitle; 
@property(nonatomic,strong)NSString *destinationName; 
@property(nonatomic,strong)UIImage *destinationImage; 
-(id)initWithDestinationIndex:(NSUInteger)destinationIndex; 

@end 

Answer 1

完全卸下destinationImage方法。你已經綜合了它，它應該正常工作，就像。