iOS7应用程序向后兼容iOS5关于唯一标识符 [英] iOS7 app backward compatible with iOS5 regarding unique identifier

问题描述

我的应用与iOS5和iOS6兼容。
到目前为止，我使用时没有问题：

My app is compatible with iOS5 and iOS6. Until now I had no problem using:

NSString DeviceID = [[UIDevice currentDevice] uniqueIdentifier];

现在iOS7和uniqueIdentifier不再工作我改为：

Now with iOS7 and with uniqueIdentifier not working anymore I changed to:

NSString DeviceID = [[[UIDevice currentDevice] identifierForVendor] UUIDString];

问题是，这对iOS5无效。

The problem is, this would not work for iOS5.

如何实现与iOS5的向后兼容？

How can I achieve backward compatibility with iOS5?

我试过这个，没有运气：

I tried this, with no luck:

#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 60000
    // iOS 6.0 or later
    NSString DeviceID = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
#else
    // iOS 5.X or earlier
    NSString DeviceID = [[UIDevice currentDevice] uniqueIdentifier];
#endif

推荐答案

最佳推荐选项由Apple提供：

The best and recommend option by Apple is:

 NSString *adId = [[[ASIdentifierManager sharedManager] advertisingIdentifier] UUIDString];

将其用于5.0以上的每台设备。

Use it for every device above 5.0.

对于5.0，您必须使用uniqueIdentifier。最好检查它是否可用：

For 5.0 you have to use uniqueIdentifier. The best to check if it's available is:

if (!NSClassFromString(@"ASIdentifierManager"))

结合它会给你：

- (NSString *) advertisingIdentifier
{
    if (!NSClassFromString(@"ASIdentifierManager")) {
        SEL selector = NSSelectorFromString(@"uniqueIdentifier");
        if ([[UIDevice currentDevice] respondsToSelector:selector]) {
            return [[UIDevice currentDevice] performSelector:selector];
        }
        //or get macaddress here http://iosdevelopertips.com/device/determine-mac-address.html
    }
    return [[[ASIdentifierManager sharedManager] advertisingIdentifier] UUIDString];
}

这篇关于iOS7应用程序向后兼容iOS5关于唯一标识符的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！