ios - 为什么我有错误 "No visible @interface for "NSArray"declares the selector "addObject :"?

Question

我需要将员工的姓名插入数组，当我这样做时收到此错误。我的代码有什么问题？

#import "Employee.h"

@interface Organisation : NSObject

-(void) addEmployeeWithName:(NSString *)EmployeesName;

@end


@interface Organisation()

@property(strong, nonatomic) NSArray<Employee *> *employees;//     private var

@end


@implementation Organisation

-(void) addEmployeeWithName:(NSString *)EmployeesName
{
    [self.employees addObject:employeeName];// Error apear here
}


@end

Answer 1

安NSArray是不可变的。你想使用 NSMutableArray .