我有一个界面：
#import <Foundation/Foundation.h> @interface Picture : NSObject; @property (readonly) NSString *filepath; - (UIImage *)image; @end
和实施：
#import "Picture.h"
#define kFilepath @"filepath"
@interface Picture () <NSCoding> {
NSString *filepath;
}
@end
@implementation Picture
@synthesize filepath;
- (id)initWithCoder:(NSCoder *)aDecoder {
self = [super initWithCoder:aDecoder];
return self;
}
- (void)encodeWithCoder:(NSCoder *)aCoder {
[aCoder encodeObject:filepath forKey:kFilepath];
}
- (UIImage *)image {
return [UIImage imageWithContentsOfFile:filepath];
}
@end
我收到错误：ARC问题 – ‘NSObject’没有可见的@interface声明选择器’initWithCoder：’
使用ARC时,NSCoding有什么不同吗？
谢谢
