使用swift访问iOS中的联系人详细信息

使用Objective-C时,我们通常使用以下代码来获取详细信息

Nsstring *firstName = (__bridge_transfer Nsstring *)ABRecordcopyValue(contactPerson,kABPersonFirstNameProperty);

在Swift中我尝试了以下内容

var firstName : Nsstring = ABRecordcopyValue(contactPerson,kABPersonFirstNameProperty).takeUnretainedValue() as Nsstring

而且由于错误,我无法构建

Bitcast requires both operands to be pointer or neither
  %224 = bitcast %objc_object* %223 to %PSs9AnyObject_,!dbg !486
Bitcast requires both operands to be pointer or neither
  %225 = bitcast %PSs9AnyObject_ %224 to i8*,!dbg !486
LLVM ERROR: broken function found,compilation aborted!
Command /Applications/Xcode6-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift Failed with exit code 1

解决方法

以下在Xcode6 beta 4中运行良好.

var firstName: Nsstring! = Unmanaged<CFString>.fromOpaque(ABRecordcopyValue(record,kABPersonFirstNameProperty).toOpaque()).takeUnretainedValue().__conversion()