如何解决在VAFieldTest应用程序中发生的_CTServerConnectionRegisterForNotification崩溃
我试图在我的设备上运行VAFieldTest应用程序，但应用程序崩溃在这一行_CTServerConnectionRegisterForNotification 。 我怎样才能解决这个崩溃？
这是我通过的参数：
CTServerConnectionRef conn; void register_notification(){ if (!mach_port || !conn) return; void *libHandle = dlopen("/System/Library/Frameworks/CoreTelephony.framework/CoreTelephony", RTLD_LOCAL | RTLD_LAZY); void *kCTCellMonitorUpdateNotification = dlsym(libHandle, "kCTIndicatorsSignalStrengthNotification"); if( kCTCellMonitorUpdateNotification== NULL) NSLog(@"Could not find kCTCellMonitorUpdateNotification"); int x = 0; //placehoder for callback _CTServerConnectionRegisterForNotification(conn,kCTCellMonitorUpdateNotification,(void*)&x); }
这是崩溃报告：
(gdb) bt #0 0x344f9710 in __CFStrConvertBytesToUnicode () #1 0x344faaea in __CFStringEncodeByteStream () #2 0x34466a10 in CFStringGetBytes () #3 0x39123928 in ctu::cf::assign () #4 0x39112380 in getCTEventForNotification () #5 0x390ecff8 in _CTServerConnectionDaemonRegistration () #6 0x39112e12 in _CTServerConnectionRegisterForNotification () #7 0x00003138 in register_notification () at /Users/deepthi/Desktop/iPhone Agent/VAFieldTest-master/Classes/VAFieldTestViewController.m:66 #8 0x00003388 in -[VAFieldTestViewController viewDidLoad] (self=0x15ada0, _cmd=0x34b8581b) at /Users/deepthi/Desktop/iPhone Agent/VAFieldTest-master/Classes/VAFieldTestViewController.m:116 #9 0x3471458c in -[UIViewController loadViewIfRequired] () #10 0x00002d84 in -[VAFieldTestAppDelegate application:didFinishLaunchingWithOptions:] (self=0x11f350, _cmd=0x34b698d3, application=0x11e510, launchOptions=0x0) at /Users/deepthi/Desktop/iPhone Agent/VAFieldTest-master/Classes/VAFieldTestAppDelegate.m:22 #11 0x34755ad0 in -[UIApplication _handleDelegateCallbacksWithOptions:isSuspended:restoreState:] () #12 0x3475565a in -[UIApplication _callInitializationDelegatesForURL:payload:suspended:] () #13 0x3474d842 in -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] () #14 0x346f5c38 in -[UIApplication handleEvent:withNewEvent:] () #15 0x346f56cc in -[UIApplication sendEvent:] () #16 0x346f511a in _UIApplicationHandleEvent () #17 0x394785a2 in _PurpleEventCallback () #18 0x344e9682 in __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ () #19 0x344e8ee8 in __CFRunLoopDoSources0 () #20 0x344e7cb6 in __CFRunLoopRun () #21 0x3445aebc in CFRunLoopRunSpecific () #22 0x3445ad48 in CFRunLoopRunInMode () #23 0x3474c47c in -[UIApplication _run] () #24 0x347492f8 in UIApplicationMain () #25 0x00002cf6 in main (argc=1, argv=0x2fdffc50) at /Users/deepthi/Desktop/iPhone Agent/VAFieldTest-master/main.m:15 (gdb)
当我得到这个时，它是由_CTServerConnectionRegisterForNotification（…）调用中的第三个参数引起的，它应该是一个指向callback的指针…在这里描述 – 不能通过int指针types传递给types为void（*）的参数void）在coretelephony obj c