objective-c - 在 Objective c .m 文件中声明一个 char 数据类型的字符串，并在 Swift 中使用它

Question

目标文件

#import "EncryptionConstants.h"

@implementation EncryptionConstants

 char encKey[] = "secretKey";
 char iv[] = "secretIV";

@end

创建桥接文件后，我在一个 swift 文件中执行此操作..

var enc = EncryptionConstants()
            print(enc.encKey)

出现如下错误:

value of EncryptionConstants has no member encKey.

Answer 1

头文件如下:

#import <Foundation/Foundation.h>

@interface EncryptionConstants: NSObject
@property unsigned char* encKey;
@property unsigned char* iv;

@end

.m 文件如下:

#import <Foundation/Foundation.h>
#import "EncryptionConstants.h"

@implementation EncryptionConstants

- (instancetype)init
{
    self = [super init];
    if (self) {
        _encKey = "secretKey";
        _iv = "secretIV";
    }
    return self;
}

@end

我们必须像下面这样快速调用:

let enc = EncryptionConstants()
print(String(cString: enc.encKey))
print(String(cString: enc.iv))

需要包含

#import "EncryptionConstants.h"

在你的桥接头中