swift - “AnyHashable”不能转换为 ‘NSObject’

Question

我正在将我的 Objective-C 代码转换为 Swift。我有自己的 DataStructure 类，称为“DCclass”，继承自“NSObject”...我已经完成了所有必需的事情，例如:在 Bridging-header 中导入了“DCclass.h”等等，一切都很好，但是在 for in 循环中我遇到了类似类型转换问题的错误。提前致谢。

当前的 Objective-C 代码:

#import “DCclass.h”
@interface LPFPickerCell ()
@property (nonatomic) NSMutableArray *myMutableArray;
@end

@implementation LPFPickerCell
- (void)setSelectedData:(NSString *) selectedString
{    
    int i = 0;
    for (DCclass *dc in self.myMutableArray)    /// Swift is showing compile time error here
    {
        NSLog(@"DCclass.empName = %@",dc.empName);
    }
}
@end

转换后的 Swift 代码:

class LPFPickerCell {

    var myMutableArray = [AnyHashable]()

    func setSelectedData(_ selectedString: String?) {
        let i: Int = 0
        for dc: DCclass in myMutableArray {    ///‘AnyHashable’ is not convertible to ‘DCclass’
        print("DCclass.empName = \(dc.empName)")
        }
    }
}

Answer 1

也许你需要改变你的数组类型

var myMutableArray = [AnyHashable]()

到

var myMutableArray = [DCclass]()

然后在for循环中你可以像这样访问它

for dc in myMutableArray {    
    print("DCclass.empName = \(dc.empName)")
}