IOS7中的UDID替换

-(NSString*)uniqID
{
    NSString* uniquEIDentifier = nil;
    if( [UIDevice instancesRespondToSELEctor:@SELEctor(identifierForVendor)] ) {
        // iOS 6+
        uniquEIDentifier = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
    } else {
        // before iOS 6,so just generate an identifier and store it
        uniquEIDentifier = [[NSUserDefaults standardUserDefaults] objectForKey:@"identifierForVendor"];
        if( !uniquEIDentifier ) {
            CFUUIDRef uuid = CFUUIDCreate(null);
            uniquEIDentifier = ( NSString*)CFUUIDCreateString(NULL,uuid);
            CFRelease(uuid);
            [[NSUserDefaults standardUserDefaults] setObject:uniquEIDentifier forKey:@"identifierForVendor"];
        }
    }
return uniquEIDentifier;
}//

updatE

正如Leon Lucardie所言,他是对的