快速修改 SCDynamicStore.h 的 headers答案

【问题标题】：Modify Headers of SCDynamicStore.h in swift快速修改 SCDynamicStore.h 的 headers
【发布时间】：2017-10-18 14:17:10
【问题描述】：

我正在尝试检测 iOS 中的热点状态。为此，我需要使用SystemConfiguration API，如下所示

let sc = SCDynamicStoreCreate(nil, "com.apple.wirelessmodemsettings.MISManager" as CFString, nil, nil)
let info = SCDynamicStoreCopyValue(sc, "com.apple.MobileInternetSharing" as CFString)

但 SCDynamicStoreCreate 和 SCDynamicStoreCopyValue 不适用于 iOS。我需要修改SCDynamicStore.h 文件并使这些功能可用于iOS（它们目前标记为仅适用于Mac）。

此链接提到了一种通过创建重复标题来执行此操作的方法.. SCDynamicStoreCreate is unavailable: not available on iOS。但是这种方法对我很快不起作用。

如何快速实现这一点？

谢谢

【问题讨论】：

标签： ios objective-c swift iphone-privateapi

【解决方案1】：

有几种方法可以做到这一点。

这是一种完全 Swift 且不涉及更改头文件的方法。

    import SystemConfiguration

    // Define types for each of the calls of interest
    typealias TSCDynamicStoreCreate = @convention (c) (_ allocator: CFAllocator?, _ name: CFString, _ callout: SystemConfiguration.SCDynamicStoreCallBack?, _ context: UnsafeMutablePointer<SCDynamicStoreContext>?) -> SCDynamicStore?
    typealias TSCDynamicStoreCopyValue = @convention (c) (_ store: SCDynamicStore?, _ key: CFString) -> CoreFoundation.CFPropertyList?

    // Get a handle to the library, the flag `RT_NOLOAD` will limit this
    // to already loaded libraries
    let hLibrary = dlopen("/System/Library/Frameworks/SystemConfiguration.framework/SystemConfiguration", RTLD_NOLOAD);

    // Load addresses of the functions from the library
    let MySCDynamicStoreCreate = unsafeBitCast(dlsym(hLibrary, "SCDynamicStoreCreate"), to: TSCDynamicStoreCreate.self)
    let MySCDynamicStoreCopyValue = unsafeBitCast(dlsym(hLibrary, "SCDynamicStoreCopyValue"), to: TSCDynamicStoreCopyValue.self)

    // Setup constants
    let name = "com.apple.wirelessmodemsettings.MISManager" as CFString
    let key = "com.apple.MobileInternetSharing" as CFString

    // Call the functions through the looked up addresses
    let dynamicStore = MySCDynamicStoreCreate(nil, name, nil, nil)
    let plist = MySCDynamicStoreCopyValue(dynamicStore, key)
    dump(plist)

【讨论】：