ios监测来电

#import <CoreTelephony/CTCallCenter.h>
#import <CoreTelephony/CTCall.h>

_callCenter = [[CTCallCenter alloc] init];
    __weak typeof(self) weak_self = self;
    _callCenter.callEventHandler = ^(CTCall * _Nonnull call) {
        if ([call.callState isEqualToString:CTCallStateDisconnected])
        {
            NSLog(@"挂断电话Call has been disconnected");
            weak_self.handleCall = NO;
        }
        else if ([call.callState isEqualToString:CTCallStateConnected])
        {
            weak_self.handleCall = YES;
            NSLog(@"电话通了Call has just been connected");
        }
        else if([call.callState isEqualToString:CTCallStateIncoming])
        {
            NSLog(@"来电话了Call is incoming");
            weak_self.handleCall = YES;
        }
        else if ([call.callState isEqualToString:CTCallStateDialing])
        {
            weak_self.handleCall = YES;
            NSLog(@"正在拨出电话call is dialing");
        }
        else
        {
            NSLog(@"什么没做Nothing is done");
            weak_self.handleCall = NO;
        }
        
    };