升级到iOS Beta 13之后，我注意到了一件不愉快的事情：我的应用有时会因传入的VoIP推送而崩溃。
在崩溃报告中，我看到以下内容：
iOS 13 Killing app because it never posted an incoming call to the system after receiving a PushKit VoIP callback
Fatal Exception: NSInternalInconsistencyException
0 CoreFoundation 0x1af21b9f0 __exceptionPreprocess
1 libobjc.A.dylib 0x1af7284fc objc_exception_throw
2 CoreFoundation 0x1af11efec +
[_CFXNotificationTokenRegistration keyCallbacks]
3 Foundation 0x1aeda1330 -[NSAssertionHandler
handleFailureInMethod:object:file:lineNumber:description:]
4 PushKit 0x19caa6b54 -[PKPushRegistry
_terminateAppIfThereAreUnhandledVoIPPushes]
5 libdispatch.dylib 0x1afa441ec _dispatch_client_callout
6 libdispatch.dylib 0x1af9f6c6c
_dispatch_lane_barrier_sync_invoke_and_complete
7 PushKit 0x19caa5b74 __73-[PKPushRegistry
voipPayloadReceived:mustPostCall:withCompletionHandler:]_block_invoke
8 libdispatch.dylib 0x1afa43678
_dispatch_call_block_and_release
9 libdispatch.dylib 0x1afa441ec
_dispatch_client_callout
10 libdispatch.dylib 0x1af9f61f8
_dispatch_main_queue_callback_4CF$VARIANT$mp
11 CoreFoundation 0x1af1992a0
CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE …*** 由于未捕获的异常“NSInternalInconsistencyException”而终止应用程序，原因：“使用 VoIP 推送的 PushKit 应用程序必须链接 CallKit 或 IncomingCallNotifications 框架。”
此错误显示在使用 iOS 13 的 xcode 11 Beta 上。 xcode10 上没有问题。
使用 VoIP 推送的 PushKit 应用程序必须链接 CallKit 或 IncomingCallNotifications 框架。#voip