macos - Swift _ABSearchComparison 不可转换为 ABSearchComparison

Question

您好，我是编程和 Swift 的新手，我一直在搜索地址簿。

我收到此错误:_ABSearchComparison 不可转换为 ABSearchComparison

var adbk = ABAddressBook.sharedAddressBook()

var isGroupBusiness = ABGroup.searchElementForProperty(kABGroupNameProperty, label: nil, key: nil, value: "Business", comparison: kABEqual)

提前谢谢你

Answer 1

kABEqual 具有 struct _ABSearchComparison 类型，因此必须通过显式转换为 ABSearchComparison(又名 CFIndex)，正如 comparison: 参数所预期的那样:

var isGroupBusiness = ABGroup.searchElementForProperty(kABGroupNameProperty,
            label: nil, key: nil, value: "Business",
            comparison: ABSearchComparison(kABEqual.rawValue))