如何用CFUUIDCreate替换uniqueIdentifier? [英] How can I replace uniqueIdentifier with CFUUIDCreate?
本文介绍了如何用CFUUIDCreate替换uniqueIdentifier?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在尝试激活APNS。因为不推荐使用 uniqueIdentifier
,所以我尝试使用 CFUUIDCreate
并使用以下代码:
I am trying to activate APNS. Because uniqueIdentifier
is deprecated, I'm trying to use CFUUIDCreate
with the following code:
UIDevice *dev = [UIDevice currentDevice];
NSString *deviceUuid;
if ([dev respondsToSelector:@selector(uniqueIdentifier)])
deviceUuid = dev.uniqueIdentifier;
else {
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
id uuid = [defaults objectForKey:@"deviceUuid"];
if (uuid)
deviceUuid = (NSString *)uuid;
else {
CFStringRef cfUuid = CFUUIDCreateString(NULL, CFUUIDCreate(NULL));
deviceUuid = (__bridge NSString *)cfUuid;
CFRelease(cfUuid);
[defaults setObject:deviceUuid forKey:@"deviceUuid"];
}
}
如何替换 uniqueIdentifier
CFUUIDCreate
?
推荐答案
iOS< ; 6.0
iOS < 6.0
// Create universally unique identifier (object)
CFUUIDRef uuidObject = CFUUIDCreate(kCFAllocatorDefault);
// Get the string representation of CFUUID object.
NSString *uuidStr = (__bridge_transfer NSString *)CFUUIDCreateString(kCFAllocatorDefault, uuidObject);
CFRelease(uuidObject);
iOS> = 6.0
iOS >= 6.0
NSString* UDID = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
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