Getting Compile Errors When Using Private API in XCode

Question

I'm trying to write an app for an iPhone using Apple Private APIs. This is for personal developer purpose only. It won't be submitted to the app store so I don't have to worry about rejection.

I've followed the instructions in this video, but I'm not quite sure how to fix these compiling errors:

Here's the Youtube link: https://www.youtube.com/watch?v=OLX7b_KZIvg

These are the steps to produce these errors incase you don't want to watch the Youtube video:

Download the Private Framework Headers from this url: https://github.com/kennytm/iphone-private-frameworks/tree/master
Unzip the downloaded file
Copy the desired class into the Xcode PrivateFrameworks path, my path is: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/PrivateFrameworks (I used the TelephonyUtilities.framework)
Create a new Project in Xcode (I'm using version 7.2)
Go to Project/Build Settings and set the "Framework Search Paths" value to /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/PrivateFrameworks (You might have a slightly different path)
Go Project/General and add the library TelephonyUtilities.framework to "Linked Frameworks and Libraries" section

Note: 1. At this point, you should be able to build without errors 2. Should also see the private framework in the project folder in the left panel.

Now, if you add a header to the ViewController.h in the project, and build, you get the errors shown image above.

Here's my ViewController.h file:

#import <UIKit/UIKit.h>
#include <TelephonyUtilities/TUCallCenter.h>  // <<<<< This line causes the compilation errors

@interface ViewController : UIViewController


@end

The reason for me to use the private API is I want my app to accept an incoming call and the public API doesn't allow it.

Any help or pointer to resolve this would be appreciated.

Thanks

Were you able to answer call automatically using this private API — Jas_meet, Sep 28 '17 at 05:16
It's been a while that I try again, but I don't believe I ever fixed it. — Will, Oct 06 '17 at 01:17

score 0 · Answer 1 · answered Jan 29 '16 at 22:12

In case anyone is wondering, the fix for what I needed was quite simple. Luckily, I didn't need all the functions available in the TUCallCenter class. I just needed a few and I could get away with commenting out the unnecessary lines.

Here are the changes to the TUCallCenter.h header file:

/* Generated by RuntimeBrowser
   Image: /System/Library/PrivateFrameworks/TelephonyUtilities.framework/TelephonyUtilities
 */

#include "TUCallModelState.h"  // <<< Had to add this because TUCallModelState is used below

@interface TUCallCenter : NSObject {
    TUCallModelState *_callModelState;
}

//@property (nonatomic, readonly, retain) TUCall *activeVideoCall;
//@property (nonatomic, readonly) BOOL anyCallIsEndpointOnCurrentDevice;
//@property (nonatomic, readonly) BOOL anyCallIsHostedOnCurrentDevice;
//@property (nonatomic, readonly) unsigned int callCountOnDefaultPairedDevice;
//@property (nonatomic, readonly, copy) NSArray *callGroupsOnDefaultPairedDevice;
@property (nonatomic, retain) TUCallModelState *callModelState;
//@property (nonatomic, readonly, copy) NSArray *callsHostedElsewhere;
//@property (nonatomic, readonly, copy) NSArray *callsHostedOrAnEndpointElsewhere;
//@property (nonatomic, readonly, copy) NSArray *callsOnDefaultPairedDevice;
//@property (nonatomic, readonly, copy) NSArray *callsWithAnEndpointElsewhere;
//@property (nonatomic, readonly, copy) NSArray *conferenceParticipantCalls;
//@property (nonatomic, readonly) unsigned int currentAudioAndVideoCallCount;
//@property (nonatomic, readonly, copy) NSArray *currentAudioAndVideoCalls;
//@property (nonatomic, readonly) unsigned int currentCallCount;
//@property (nonatomic, readonly, retain) NSArray *currentCallGroups;
//@property (nonatomic, readonly, copy) NSArray *currentCalls;
//@property (nonatomic, readonly, retain) TUCall *currentVideoCall;
//@property (nonatomic, readonly) unsigned int currentVideoCallCount;
//@property (nonatomic, readonly, copy) NSArray *currentVideoCalls;
//@property (nonatomic, readonly, copy) NSArray *displayedCalls;
//@property (nonatomic, readonly, retain) TUCall *incomingCall;
//@property (nonatomic, readonly, copy) NSArray *incomingCalls;
//@property (nonatomic, readonly, retain) TUCall *incomingVideoCall;
//
//+ (id)_sharedInstanceWithDaemonDelegate:(id)arg1;
//+ (BOOL)emergencyCallBackModeIsActive;
+ (BOOL)isInCallServiceProcess;
//+ (void*)sharedAddressBook;
+ (id)sharedInstance;
//
//- (void).cxx_destruct;
//- (id)_allCalls;
//- (id)_callGroupsFromCalls:(id)arg1;
//- (void)_callStatusChangedInternal:(id)arg1;
//- (id)_dial:(id)arg1 callID:(int)arg2 service:(int)arg3 sourceIdentifier:(id)arg4 dialType:(int)arg5 uniqueProxyIdentifier:(id)arg6;
//- (id)_dialWithRequest:(id)arg1 completion:(id /* block */)arg2;
//- (void)_handleCallControlFailure:(id)arg1;
//- (id)activeVideoCall;
//- (BOOL)allCallsAreOfService:(int)arg1;
//- (BOOL)allCallsPassTest:(id /* block */)arg1;
//- (int)ambiguityState;
- (void)answerCall:(id)arg1;
//- (void)answerCall:(id)arg1 withSourceIdentifier:(id)arg2;
//- (void)answerCall:(id)arg1 withSourceIdentifier:(id)arg2 wantsHoldMusic:(BOOL)arg3;
//- (void)answerCallWithHoldMusic:(id)arg1;
//- (BOOL)anyCallIsEndpointOnCurrentDevice;
//- (BOOL)anyCallIsHostedOnCurrentDevice;
//- (BOOL)anyCallPassesTest:(id /* block */)arg1;
//- (id)audioAndVideoCallsWithStatus:(int)arg1;
//- (id)audioOrVideoCallWithStatus:(int)arg1;
//- (unsigned int)callCountOnDefaultPairedDevice;
//- (id)callGroupsOnDefaultPairedDevice;
//- (id)callModelState;
//- (id)callPassingTest:(id /* block */)arg1;
//- (id)callPassingTest:(id /* block */)arg1 sortedUsingComparator:(id /* block */)arg2;
//- (id)callPassingTest:(id /* block */)arg1 withOptions:(unsigned int)arg2;
//- (id)callWithCallUUID:(id)arg1;
//- (id)callWithStatus:(int)arg1;
//- (id)callWithUniqueProxyIdentifier:(id)arg1;
//- (id)callsHostedElsewhere;
//- (id)callsHostedOrAnEndpointElsewhere;
//- (id)callsOnDefaultPairedDevice;
//- (id)callsPassingTest:(id /* block */)arg1;
//- (id)callsPassingTest:(id /* block */)arg1 returningNilForEmpty:(BOOL)arg2;
//- (id)callsWithAnEndpointElsewhere;
//- (id)callsWithStatus:(int)arg1;
//- (BOOL)canInitiateCallForService:(int)arg1;
//- (BOOL)canInitiateCalls;
//- (BOOL)canInitiateVoicemailCall;
//- (BOOL)canMergeCalls;
//- (BOOL)canUseThumperOverRelayForIncomingAndOutgoingCalls;
//- (id)conferenceCall;
//- (id)conferenceParticipantCalls;
//- (unsigned int)countOfCallsPassingTest:(id /* block */)arg1;
//- (unsigned int)currentAudioAndVideoCallCount;
//- (id)currentAudioAndVideoCalls;
//- (unsigned int)currentCallCount;
//- (id)currentCallGroups;
//- (id)currentCalls;
//- (id)currentVideoCall;
//- (unsigned int)currentVideoCallCount;
//- (id)currentVideoCalls;
//- (void)dealloc;
//- (id)dial:(id)arg1 callID:(int)arg2 service:(int)arg3;
//- (id)dial:(id)arg1 callID:(int)arg2 service:(int)arg3 sourceIdentifier:(id)arg4 uniqueProxyIdentifier:(id)arg5;
//- (id)dial:(id)arg1 service:(int)arg2;
//- (id)dialEmergency:(id)arg1;
//- (id)dialEmergency:(id)arg1 sourceIdentifier:(id)arg2;
//- (id)dialVoicemail;
//- (id)dialVoicemailWithSourceIdentifier:(id)arg1;
//- (id)dialWithRequest:(id)arg1;
//- (void)dialWithRequest:(id)arg1 completion:(id /* block */)arg2;
//- (void)disconnectAllCalls;
//- (void)disconnectCall:(id)arg1;
//- (void)disconnectCall:(id)arg1 withReason:(int)arg2;
//- (void)disconnectCurrentCallAndActivateHeld;
//- (void)disconnectNonRelayingCalls;
//- (void)disconnectRelayingCalls;
//- (id)displayedCall;
//- (id)displayedCallFromCalls:(id)arg1;
//- (id)displayedCalls;
//- (void)endActiveAndAnswerCall:(id)arg1;
//- (void)endActiveOrHeldAndAnswerCall:(id)arg1;
//- (void)endEmergencyCallBackMode;
//- (void)endHeldAndAnswerCall:(id)arg1;
//- (void)enteredBackgroundForAllCalls;
//- (void)enteredForegroundForCall:(id)arg1;
//- (void)enumerateCallsInvokingBlock:(id /* block */)arg1 forCallsPassingTest:(id /* block */)arg2;
//- (void)enumerateCallsWithOptions:(unsigned int)arg1 invokingBlock:(id /* block */)arg2 forCallsPassingTest:(id /* block */)arg3;
//- (id)frontmostAudioOrVideoCall;
//- (id)frontmostCall;
- (void)handleCallModelStateChanged:(id)arg1;
//- (void)holdActiveAndAnswerCall:(id)arg1;
//- (id)incomingCall;
//- (id)incomingCalls;
//- (id)incomingVideoCall;
//- (id)initWithDaemonDelegate:(id)arg1;
//- (BOOL)isAddCallAllowed;
//- (BOOL)isAmbiguous;
//- (BOOL)isEndAndAnswerAllowed;
//- (BOOL)isHardPauseAvailable;
//- (BOOL)isHoldAllowed;
//- (BOOL)isHoldAndAnswerAllowed;
//- (BOOL)isMergeable;
//- (BOOL)isSendToVoicemailAllowed;
//- (BOOL)isSwappable;
//- (BOOL)isTakingCallsPrivateAllowed;
//- (void)pullHostedCallsFromPairedHostDevice;
//- (void)pullRelayingCallsFromClient;
//- (void)pullThumperCallFromClientUsingInfo:(id)arg1 completion:(id /* block */)arg2;
//- (void)pushHostedCallsToPairedClientDevice;
//- (void)pushRelayingCallsToHost;
//- (void)pushRelayingCallsToHostWithSourceIdentifier:(id)arg1;
//- (void)resumeCall:(id)arg1;
//- (void)sendFieldModeDigits:(id)arg1;
//- (void)setCallModelState:(id)arg1;
//- (void)swapCalls;
//- (id)videoCallWithStatus:(int)arg1;

@end

As you can see, only left in a few functions and I was able to build and run.

Did you use all that Framework concept or just drag/drop the files? — SwiftArchitect, Jan 29 '16 at 22:17
@SwiftArchitect - I'm afraid I don't know what Framework concept is. I did copy and paste the files in Finder though. — Will, Jan 30 '16 at 00:22

score 0 · Answer 2 · answered Jun 29 '17 at 07:00

NSString *frameworkPath = @"/System/Library/PrivateFrameworks/TelephonyUtilities.framework"];
NSBundle *bundlePath = [NSBundle bundleWithPath: frameworkPath];
if ([bundlePath load]) {
    Class TUCallCenter = NSClassFromString(@"TUCallCenter");
    tucallCenter = [TUCallCenter sharedInstance];
}

This is how you load TUCallCenter instance dynamically with private frameworks.

Getting Compile Errors When Using Private API in XCode

2 Answers2