Swift编译错误位广播要求两个操作数都为指针或都不为指针 [英] Swift Compile Error Bitcast requires both operands to be pointer or neither

问题描述

在Xcode6 beta 1中，类似的方法起作用，但是在Xcode6 beta 4中存在错误.修正错误后，我的无错误代码如下

In Xcode6 beta 1 something similar to this worked, however with Xcode6 beta 4 there were errors. After fixing the errors the errorless code I have is below

用于背景:我在这里使用的类实现了 ABPeoplePickerNavigationControllerDelegate ，它使您可以让用户从通讯录中选择一个联系人.我想获得添加到该人的第一封电子邮件.

For Background: The class I'm using here implements ABPeoplePickerNavigationControllerDelegate which allows you the user to select a contact from the address book. I want to get the first email that is added to that person.

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)
}

但是，当我编译时，构建失败:

However when I compile I get Build Failed:

位广播要求两个操作数均为指针，或都不为指针％80 =将％objc_object *％79广播到％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 *存储的值类型与指针操作数类型不匹配！存储％PSs9AnyObject_％80，％objc_object **％85，对齐4，！dbg！864％objc_object * LLVM错误:发现损坏的函数，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

可疑行是:

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

当我将代码更改为

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

位广播要求两个操作数均为指针，或都不为指针％79 =将％objc_object *％78广播到％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:发现损坏的函数，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

在此先感谢您的帮助

亚伦

推荐答案

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)

}

可以在此处找到完整的答案.

More full answer can be found here.

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