Identify number of incoming call in iPhone - iphone

Question

How do I know who is calling me?
Identify the number or even the contact in my list case I have.
I can identify if have or not a call, with this code.
void (^ctCallStateMuda)(NSNotification *) = ^(NSNotification * notification) {
NSString *callInfo = [[notification userInfo] objectForKey:#"callState"];
if ([callInfo isEqualToString:CTCallStateIncoming]) {
NSLog(#">>>>>> chegando");
} else if ([callInfo isEqualToString:CTCallStateConnected]) {
NSLog(#">>> atendendo <<<");
} else if ([callInfo isEqualToString:CTCallStateDisconnected]) {
NSLog(#"desconectado >>>>>>");
} else if ([callInfo isEqualToString:CTCallStateConnected]) {
NSLog(#"discando");
} else {
NSLog(#"nada");
}
};
CTCallCenter *callCenter;
callCenter = [[CTCallCenter alloc] init];
callCenter.callEventHandler = ^(CTCall* aCallIncomming) {
NSDictionary *dict = [NSDictionary dictionaryWithObject:aCallIncomming.callState
forKey:#"callState"];
[[NSNotificationCenter defaultCenter] postNotificationName:#"CTCallStateDidChange"
object:self
userInfo:dict];
};
[[NSNotificationCenter defaultCenter] addObserverForName:#"CTCallStateDidChange"
object:nil
queue:nil
usingBlock:ctCallStateMuda];

Answer 1

You don't have access to this information in the public SDK (a jailbroken iPhone is another matter). Apple prohibit apps from having access to any information relating to call history. The code you've posted above is so your app can detect when the user is receiving a phone call and adapt their interface accordingly, but that's it.