我认为这是100%直截了当,现在感觉不止有点愚蠢 。我有一个基于NSObject
的班级NORPlayer
,带有公共财产:
@property (nonatomic, strong) NSArray *pointRollers;
然而,这不是由子类继承的。 数组设置如下,它可以正常工作:
PARENT-CLASS:
@implementation NORPlayer
- (instancetype)init{
self = [super init];
if (self) {
[self setup];
}
return self;
}
- (void)setup{
NSMutableArray *tempRollersArray = [[NSMutableArray alloc] init];
for (NSUInteger counter = 0; counter < 5; counter++) {
NORPointRoller *aRoller = [[NORPointRoller alloc] init];
[tempRollersArray addObject:aRoller];
}
_pointRollers = [NSArray arrayWithArray:tempRollersArray];
}
尝试创建从NORPlayer
到NORVirtualPlayer
的子类时,但是出现问题:
SUB-CLASS:
#import "NORPlayer.h"
@interface NORVirtualPlayer : NORPlayer
// none of the below properties nor the method pertains to the problem at hand
@property (nonatomic, assign) NSArray *minimumAcceptedValuePerRound;
@property (nonatomic, assign) NSUInteger scoreGoal;
@property (nonatomic, assign) NSUInteger acceptedValueAdditionWhenScoreGoalReached;
- (void)performMoves;
@end
NORVirtualPlayer
的初始化正在使用调用设置方法的init方法镜像其父类:
@implementation NORVirtualPlayer
- (instancetype)init{
self = [super init];
if (self) {
[self setup];
}
return self;
}
- (void)setup{
self.minimumAcceptedValuePerRound = @[ @5, @5, @5, @5, @5 ];
self.scoreGoal = 25;
self.acceptedValueAdditionWhenScoreGoalReached = 0;
}
问题是NORVirtualPlayer
个实例永远不会获得已发起的pointRollers
属性。我已经介绍了所有内容,并且调用了parentClass中的setup方法,因为它是子类...
这感觉它一定是一个相当基本的问题,但我只是无法绕过它。任何帮助将不胜感激。干杯!
解决方案:如下所述。令人尴尬,但仍然很开心。感谢Putz1103首先到达那里。我认为super的设置将通过其init-method调用,但不是那么明显......
答案 0 :(得分:4)
我没有看到NORPlayer的设置是从NORVirtualPlayer调用的,这是初始化数组的地方。
- (void)setup{
self.minimumAcceptedValuePerRound = @[ @5, @5, @5, @5, @5 ];
self.scoreGoal = 25;
self.acceptedValueAdditionWhenScoreGoalReached = 0;
}
你是否也想打电话给你的超级设置?
- (void)setup{
[super setup];
self.minimumAcceptedValuePerRound = @[ @5, @5, @5, @5, @5 ];
self.scoreGoal = 25;
self.acceptedValueAdditionWhenScoreGoalReached = 0;
}