无法使用类型为 '(UInt32， UnsafePointer， <Int8>UInt， [CChar]， Int， UnsafeMutablePointer) 的参数列表调用'CCH

Question

我将xCode和/或swift 1.0更新为1.2，但出现了很多错误，

我知道一些方法在 Swift 1.2 中更新/更改，因此我开始将整个项目更新到 swift 1.2。我被困在这一行上：

CCHmac(CCHmacAlgorithm(kCCHmacAlgSHA1), cKey, strlen(cKey), str!, strLen, result)

它抛出错误Cannot invoke 'CCHmac' with an argument list of type '(UInt32, UnsafePointer<Int8>, UInt, [CChar], Int, UnsafeMutablePointer<CUnsignedChar>)'

这是我的代码

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 let str = cred.cStringUsingEncoding(NSUTF8StringEncoding)
        let strLen:Int = Int(cred.lengthOfBytesUsingEncoding(NSUTF8StringEncoding))
        let digestLen = Int(CC_SHA1_DIGEST_LENGTH)
        let result = UnsafeMutablePointer<CUnsignedChar>.alloc(digestLen)
        let objcKey = key as NSString
        let keyStr = Key.cStringUsingEncoding(NSUTF8StringEncoding)
        let keyLen:Int = Int(Key.lengthOfBytesUsingEncoding(NSUTF8StringEncoding))
        var st:NSString = dataFromHexadecimalString(Key)!
        let cKey = st.cStringUsingEncoding(NSUTF8StringEncoding)

        CCHmac(CCHmacAlgorithm(kCCHmacAlgSHA1), cKey, strlen(cKey), str!, strLen, result)
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注意：我从Uint to Int更改了keyLen和strLen，但仍然抛出相同的错误。

Answer 1

我解决了它，只是将strlen（cKey）转换为int，就像Int(strlen(cKey))

整行看起来像

CCHmac(CCHmacAlgorithm(kCCHmacAlgSHA1), cKey, Int(strlen(cKey)), str!, strLen, result)