我有2个型号:NSMutableArray不能添加对象?
@interface Program : NSObject
@property (nonatomic, retain) NSString * name;
@property (nonatomic, strong) NSMutableArray *guides;
@end
@interface Guide : NSObject
@property (nonatomic, retain) NSString *name;
@end
我添加一些导游项目从一个XML:
Program *program = [Program new];
program.name = @"My list"
for(DDXMLElement *guideElement in [programElement nodesForXPath:@"guide" error:&error])
{
Guide *guide = [Guide new];
guide.name = [guideElement stringValue];// [p attribute:@"name"];
[program.guides addObject:guide];
NSLog(@"load guide number: %d", [program.guides count]);
}
的出来总是 “负载导数:0”
您是否制作了NSMutableArray中?如:self.guides = [NSMutableArray array] – HKTonyLee
因为调用任何nil对象的方法都会返回nil值。在这种情况下,[program.guides count]将返回0. – HKTonyLee