gistfile1.m

static CXProviderConfiguration * providerConfiguration; // GLOBAL
@property (strong, nonatomic) CXProvider * provider;
@property (weak, nonatomic) NSTimer * providerTimer;

// GETTER DECLARATION
+(CXProviderConfiguration *)providerConfiguration;

// GETTER DEFINATION
+(CXProviderConfiguration *)providerConfiguration {
providerConfiguration = [[CXProviderConfiguration alloc] initWithLocalizedName:@”Name you want to give”];
providerConfiguration.supportsVideo = NO; providerConfiguration.maximumCallGroups = 1;
providerConfiguration.iconTemplateImageData = UIImagePNGRepresentation([UIImage imageNamed:@”video_call.png”]); providerConfiguration.ringtoneSound = @”ring.caf”;
return providerConfiguration;
}

-(instancetype)init {
self = [super init];
if (self) {
self.provider = [[CXProvider alloc] initWithConfiguration:[<CLASS NAME> providerConfiguration]];
[self.provider setDelegate:self queue:nil];
}
return self;
}

-(void)displayIncomingCall:(NSUUID *)uuid handle:(NSString *)handle hasVideo:(BOOL)flag withCompletion:(void(^)(NSError *error))completion {
CXCallUpdate *update = [[CXCallUpdate alloc] init];
update.remoteHandle = [[CXHandle alloc] CXHandleTypePhoneNumber value:handle]; 
update.hasVideo = flag;
[self.provider reportNewIncomingCallWithUUID:uuid update:update completion:^(NSError * _Nullable error) {
completion(error);
}];
}

-(void)providerDidBegin:(CXProvider *)provider {
self.providerTimer = [NSTimer scheduledTimerWithTimeInterval:15.0 target:self selector:@selector(performSomeAction:) userInfo:nil repeats:NO];
}

-(void)providerDidReset:(CXProvider *)provider {
NSLog(@”Provider did reset”);
/* End any ongoing calls if the provider resets, and remove them from the app’s list of calls, since they are no longer valid.*/
}

-(void)provider:(CXProvider *)provider performAnswerCallAction:(CXStartCallAction *)action {
/* Perform your action after accepting the call */
}

- (void)provider:(CXProvider *)provider performEndCallAction:(CXEndCallAction *)action {
/* Perform your action after ending the call */
}

- (void)provider:(CXProvider *)provider performSetMutedCallAction:(CXSetMutedCallAction *)action
{
/*CXSetMutedCallAction is a concrete subclass of CXCallAction that encapsulates the act of muting or unmuting a call.When a caller mutes a call, that caller is unable to communicate with other callers until they unmute the call. A muted caller still receives communication from other unmuted callers.*/
}

- (void)provider:(CXProvider *)provider performSetGroupCallAction:(CXSetMutedCallAction *)action {
/*CXSetGroupCallAction is a concrete subclass of CXCallAction that encapsulates the act of grouping or ungrouping calls.A group call allows more than two recipients to simultaneously communicate with one another. */
}

- (void)provider:(CXProvider *)provider performSetHeldCallAction:(CXSetHeldCallAction *)action {
/* CXSetHeldCallAction is a concrete subclass of CXCallAction that encapsulates the act of placing a call on hold or removing a call from hold. When a caller places the call on hold, callers are unable to communicate with one another until the holding caller removes the call from hold. Placing a call on hold doesn’t end the call. */
}

-(void)performSomeAction:(NSTimer *)timer
{
/* DO YOUR ACTION */
}