Question

在Xcode6 beta 1中，类似的东西起作用，但是在Xcode6 beta 4中有错误。修复错误后，我的无错误代码在

之下

背景：我在这里使用的类实现ABPeoplePickerNavigationControllerDelegate，允许用户从地址簿中选择联系人。我想收到第一封添加到该人的电子邮件。

func peoplePickerNavigationController(peoplePicker: ABPeoplePickerNavigationController!,didSelectPerson person: ABRecordRef!) {

    var emails = ABRecordCopyValue(person, kABPersonEmailProperty)
    var emailsObj = emails.takeUnretainedValue() as AnyObject
    var index = 0 as CFIndex
    var emailAddress = ABMultiValueCopyValueAtIndex(emailsObj, index)

    println(emailAddress)
}

然而，当我编译时，我得到Build Failed：

Bitcast要求两个操作数都是指针％80 = bitcast％objc_object *％79到％PSs9AnyObject_，！dbg！860 存储值类型与指针操作数类型不匹配！存储％PSs9AnyObject_％80，％objc_object **％81，对齐4，！dbg！860 ％objc_object *存储值类型与指针操作数类型不匹配！ store％PSs9AnyObject_％80，％objc_object **％85，align 4，！dbg！864 ％objc_object * LLVM错误：发现功能损坏，编译中止！命令/Applications/Xcode6-Beta4.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift失败，退出代码为1

可疑线是：

var emailsObj = emails.takeUnretainedValue() as AnyObject
var emailAddress = ABMultiValueCopyValueAtIndex(emailsObj, index)

当我将代码更改为

时

func peoplePickerNavigationController(peoplePicker: ABPeoplePickerNavigationController!,didSelectPerson person: ABRecordRef!) {

    var emails = ABRecordCopyValue(person, kABPersonEmailProperty)
    var emailsObj:AnyObject? = emails.takeRetainedValue() as AnyObject
    var index = 0 as CFIndex
    var emailAddress = ABMultiValueCopyValueAtIndex(emailsObj, index)

    println(emailAddress)
}

错误缩短为

Bitcast要求两个操作数都是指针％79 = bitcast％objc_object *％78到％PSs9AnyObject_，！dbg！856 存储值类型与指针操作数类型不匹配！存储％PSs9AnyObject_％79，％objc_object **％80，对齐8，！dbg！856 ％objc_object * LLVM错误：发现功能损坏，编译中止！命令/Applications/Xcode6-Beta4.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift失败，退出代码为1

提前感谢您提供任何帮助

亚伦

Answer 1

func peoplePickerNavigationController(peoplePicker: ABPeoplePickerNavigationController!,didSelectPerson person: ABRecordRef!) {

    var unmanagedEmails = ABRecordCopyValue(person, kABPersonEmailProperty)
    let emailObj: ABMultiValueRef = Unmanaged.fromOpaque(unmanagedEmails.toOpaque()).takeUnretainedValue() as NSObject as ABMultiValueRef

    var index = 0 as CFIndex

    var unmanagedEmail = ABMultiValueCopyValueAtIndex(emailObj, index)
    var emailAddress:String = Unmanaged.fromOpaque(unmanagedEmail.toOpaque()).takeUnretainedValue() as NSObject as String

    println(emailAddress)

}

可以找到更多完整答案here。

Swift编译错误Bitcast需要两个操作数都是指针

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