objective-c - 未设置对象属性

Question

我有这个解析字符串的简短方法。

NSMutableArray *aircraftMutableArray;
- (void)parseAircraftRotations:(NSString*)inText
    {
    aircraftMutableArray = [NSMutableArray array];
    NSArray *inTextArray = [inText componentsSeparatedByString:@"\n"];

    for (NSString*line in inTextArray)
    {
        if ([line length] > 0)
        {
            if ([[line substringToIndex:1] isEqualToString:@"-"])
            {
                aircraft = [[AirCraft alloc] init];
                [aircraft setRegistration:[line substringFromIndex:1]];
                [aircraftMutableArray addObject:aircraft];
                aircraft = nil;
            }
        }
    }

    for (AirCraft *ac in aircraftMutableArray)
    {
        NSLog(@"%@", [ac registration]);
    }
}

我现在的问题是 NSLog 打印出正确的行数，但 [ac registration] 在每一行上都是空的。请帮忙。

Answer 1

问题是 Aircraft 对象的属性是这样定义的

@property (nonatomic, weak) NSString *registration;

应该很强

@property (nonatomic, strong) NSString *registration;