ios - iOS 的设备标识符ForVendor UUID 会一直相同吗？

Question

if ([[UIDevice currentDevice] respondsToSelector:@selector(identifierForVendor)]) {
        return [[[UIDevice currentDevice] identifierForVendor] UUIDString];
    }

这会改变吗？我原本想使用 MAC 地址，但显然 7+ 并没有返回它。我已经从我正在开发的开发应用程序中调用它，并阅读它是使用捆绑 ID 计算的。

发布应用商店后，这会永远保持一致吗？

Answer 1

来自 UIDevice class reference :

The value in this property remains the same while the app (or another app from the same vendor) is installed on the iOS device. The value changes when the user deletes all of that vendor’s apps from the device and subsequently reinstalls one or more of them. The value can also change when installing test builds using Xcode or when installing an app on a device using ad-hoc distribution. Therefore, if your app stores the value of this property anywhere, you should gracefully handle situations where the identifier changes.