小编Ryh*_*hor的帖子

我需要获得MCC与MNC当前的国家(而不是从类CTCarrier的SIM本国)代码.

我使用私有API CoreTelephony.framework.在我的设备上一切正常.但是在CellMonitorCallback我们获得的方法中的其他设备上cells = NULL.

可能有人可以帮我做错了吗？

#import "AMCoreTelephone.h"
#import <CoreTelephony/CTCarrier.h>
#import <CoreTelephony/CTTelephonyNetworkInfo.h>

struct CTResult
{
    int flag;
    int a;
};

extern CFStringRef const kCTCellMonitorCellType;
extern CFStringRef const kCTCellMonitorCellTypeServing;
extern CFStringRef const kCTCellMonitorCellTypeNeighbor;
extern CFStringRef const kCTCellMonitorCellId;
extern CFStringRef const kCTCellMonitorLAC;
extern CFStringRef const kCTCellMonitorMCC;
extern CFStringRef const kCTCellMonitorMNC;
extern CFStringRef const kCTCellMonitorUpdateNotification;

id _CTServerConnectionCreate(CFAllocatorRef, void*, int*);
void _CTServerConnectionAddToRunLoop(id, CFRunLoopRef, CFStringRef);
mach_port_t _CTServerConnectionGetPort(id);

#ifdef __LP64__
void _CTServerConnectionRegisterCallService(id);
void _CTServerConnectionUnregisterCallService(id,int*);
void _CTServerConnectionRegisterForNotification(id, CFStringRef); …