我正在尝试制作一个兼容 KVC 的可变数组来检测数组中的更改。
在我的头文件中,我有:
@interface ObjectDataModel : NSObject{
@private
NSMutableArray *objectArray;
}
@property (nonatomic, strong) NSArray *objectArray;
- (NSArray *)objectArray;
- (NSUInteger)objectArrayCount;
- (id)objectInFilePathsArrayAtIndex:(NSUInteger)index;
- (id)objectArrayAtIndexes:(NSIndexSet *)indexes;
- (void)insertObject:(id)val inObjectArrayAtIndex:(NSUInteger)index;
- (void)insertObjectArray:(NSArray *)array atIndexes:(NSIndexSet *)indexes;
- (void)removeObjectFromObjectArrayAtIndex:(NSUInteger)index;
- (void)removeObjectArrayAtIndexes:(NSIndexSet *)indexes;
- (void)replaceObjectInObjectArrayAtIndex:(NSUInteger)index withObject:(id)object;
- (void)replaceObjectArrayAtIndexes:(NSIndexSet *)indexes withObjectArray:(NSArray *)array;
@end
KVC 的典型访问器方法如文档所示。当我在主文件中实现访问器方法时,以下函数无法识别对选择器的调用:
@synthesize filePathsArray = _filePathsArray;
- (id)init
{
self = [super init];
if (self) {
}
return self;
}
//
- (void)insertObject:(id)val inObjectArrayAtIndex:(NSUInteger)index
{
[self.objectArray insertObject:val atIndex:index];
}
- (void)insertObjectArray:(NSArray *)array atIndexes:(NSIndexSet *)indexes{
[self.objectArray insertObjects:array atIndexes:indexes];
}
- (void)removeObjectFromObjectArrayAtIndex:(NSUInteger)index{
[self.objectArray removeObjectAtIndex:index];
}
- (void)removeObjectArrayAtIndexes:(NSIndexSet *)indexes{
[self.objectArray removeObjectsAtIndexes:indexes];
}
- (void)replaceObjectInObjectArrayAtIndex:(NSUInteger)index withObject:(id)object{
[self.objectArray replaceObjectAtIndex:index withObject:object];
}
- (void)replaceObjectArrayAtIndexes:(NSIndexSet *)indexes withObjectArray:(NSArray *)array{
[self.objectArray replaceObjectsAtIndexes:indexes withObjects:array];
}
错误是“novisible @interface for NSarray”为函数中的每个选择器声明了选择器:''。我很困惑并且不确定为什么这些选择器不存在? 感谢帮助。头文件中的其他4个函数都可以。
最佳答案
你有
@property (nonatomic, strong) NSArray *objectArray;
这是不可变的。使用
@property (nonatomic, strong) NSMutableArray *objectArray;
相反
关于ios - 如何使用 KVC 访问器来访问可变数组 Objective-C,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/19008409/