一旦我的voip调用按来源或目的地断开连接，我将尝试删除callkit屏幕。我用过这段代码CXEndCallAction*endaction=[[CXEndCallActionalloc]initWithCallUUID:[NSUUIDUUID]];CXCallController*callController=[[CXCallControlleralloc]initWithQueue:dispatch_get_main_queue()];requestTransaction:[CXTransactiontransactionWithActions:nilcompletion:comp