我有2個型號:NSMutableArray不能添加對象?
@interface Program : NSObject
@property (nonatomic, retain) NSString * name;
@property (nonatomic, strong) NSMutableArray *guides;
@end
@interface Guide : NSObject
@property (nonatomic, retain) NSString *name;
@end
我添加一些導遊項目從一個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]);
}
的出來總是 「負載導數:0」
您是否製作了NSMutableArray中?如:self.guides = [NSMutableArray array] – HKTonyLee
因爲調用任何nil對象的方法都會返回nil值。在這種情況下,[program.guides count]將返回0. – HKTonyLee