在Swift框架中导入CommonCrypto

问题描述

如何在适用于iOS的Swift框架中导入CommonCrypto？

How do you import CommonCrypto in a Swift framework for iOS?

我了解如何在Swift应用程序中使用CommonCrypto：添加＃导入< CommonCrypto / CommonCrypto.h> 到桥接头。

I understand how to use CommonCrypto in a Swift app: you add #import <CommonCrypto/CommonCrypto.h> to the bridging header.

但是，Swift框架不支持桥接头。 说：

However, Swift frameworks don't support bridging headers. The documentation says:

您可以使用以下语法将框架导入到不同的
目标中的任何Swift文件中：

You can import a framework into any Swift file within a different target using the following syntax:

import FrameworkName

不幸的是，导入 CommonCrypto 不起作用。也没有将 #import< CommonCrypto / CommonCrypto.h> 添加到伞形标题中。

Unfortunately, import CommonCrypto doesn't work. Neither does adding #import <CommonCrypto/CommonCrypto.h> to the umbrella header.

推荐答案

我发现了一个在Swift框架中成功使用CommonCrypto的GitHub项目：。此外，这篇文章关于很有用。

I found a GitHub project that successfully uses CommonCrypto in a Swift framework: SHA256-Swift. Also, this article about the same problem with sqlite3 was useful.

根据以上所述，步骤如下：

Based on the above, the steps are:

1）创建项目目录中的CommonCrypto 目录。在其中，创建一个 module.map 文件。模块映射将允许我们将CommonCrypto库用作Swift中的模块。它的内容是：

1) Create a CommonCrypto directory inside the project directory. Within, create a module.map file. The module map will allow us to use the CommonCrypto library as a module within Swift. Its contents are:

module CommonCrypto [system] {
    header "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator8.0.sdk/usr/include/CommonCrypto/CommonCrypto.h"
    link "CommonCrypto"
    export *
}

2）在构建设置中，在 Swift编译器 - 搜索路径中，添加 CommonCrypto 目录到导入路径（ SWIFT_INCLUDE_PATHS ）。

2) In Build Settings, within Swift Compiler - Search Paths, add the CommonCrypto directory to Import Paths (SWIFT_INCLUDE_PATHS).

3）最后，将Swift文件中的CommonCrypto导入为任何其他模块。例如：

3) Finally, import CommonCrypto inside your Swift files as any other modules. For example:

import CommonCrypto

extension String {

    func hnk_MD5String() -> String {
        if let data = self.dataUsingEncoding(NSUTF8StringEncoding)
        {
            let result = NSMutableData(length: Int(CC_MD5_DIGEST_LENGTH))
            let resultBytes = UnsafeMutablePointer<CUnsignedChar>(result.mutableBytes)
            CC_MD5(data.bytes, CC_LONG(data.length), resultBytes)
            let resultEnumerator = UnsafeBufferPointer<CUnsignedChar>(start: resultBytes, length: result.length)
            let MD5 = NSMutableString()
            for c in resultEnumerator {
                MD5.appendFormat("%02x", c)
            }
            return MD5
        }
        return ""
    }
}

限制

在编译时使用另一个项目中的自定义框架失败，错误缺少必需的模块'CommonCrypto'。这是因为CommonCrypto模块似乎不包含在自定义框架中。解决方法是在使用框架的项目中重复步骤2（设置导入路径）。

Limitations

Using the custom framework in another project fails at compile time with the error missing required module 'CommonCrypto'. This is because the CommonCrypto module does not appear to be included with the custom framework. A workaround is to repeat step 2 (setting Import Paths) in the project that uses the framework.

模块map不是平台独立的（它目前指向一个特定的平台，iOS 8模拟器）。我不知道如何制作相对于当前平台的标题路径。

The module map is not platform independent (it currently points to a specific platform, the iOS 8 Simulator). I don't know how to make the header path relative to the current platform.

iOS 8的更新< =我们应该删除行链接CommonCrypto ，以获得成功的编辑。

Updates for iOS 8 <= We should remove the line link "CommonCrypto", to get the successful compilation.

更新/编辑

我一直收到以下构建错误：

I kept getting the following build error:

除非我删除了行从我创建的 module.map 文件中链接CommonCrypto。一旦我删除了这一行，它就构建好了。

Unless I removed the line link "CommonCrypto" from the module.map file I created. Once I removed this line it built ok.

这篇关于在Swift框架中导入CommonCrypto的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！