xcode8 iOS10 log太多

更新到Xcode8以后，发现打印了许多网络相关的日志：

[] -[NWConcrete_tcp_connection dealloc] 11
[] nw_socket_handle_socket_event Event mask: 0x4
[] nw_socket_handle_socket_event Socket received WRITE_CLOSE event
[] nw_socket_handle_socket_event Event mask: 0x4
[] nw_socket_handle_socket_event Socket received WRITE_CLOSE event] tcp_connection_cancel 5
[] nw_socket_handle_socket_event Event mask: 0x4] nw_socket_handle_socket_event Socket received WRITE_CLOSE event
[] nw_endpoint_handler_cancel [5 192.168.2.51:1999 ready proxy (satisfied)]] -[NWConcrete_nw_endpoint_proxy cancelWithHandler:forced:] [5 192.168.2.51:1999 cancelled proxy (null)]] nw_endpoint_handler_cancel [5.1 192.168.2.51:1999 ready socket-flow (satisfied)]
[] nw_endpoint_flow_protocol_disconnected [5.1 192.168.2.51:1999 cancelled socket-flow (null)] Output protocol disconnected
[] nw_endpoint_handler_cancel [5.2 192.168.2.51:1999 initial path (null)]
[] -[NWConcrete_tcp_connection dealloc] 5

这些日志给我们使用Log的方法来调试带来很大困扰，解决办法：

第一步：

第二步：

第三步：

添加参数：

Name ：OS_ACTIVITY_MODE 

Value :  disable