1.在networkStatusForFlags:方法里面找到以下地方，替换即可。
1 if (flags & kSCNetworkReachabilityFlagsIsWWAN) {
2 if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0) {
3 CTTelephonyNetworkInfo *info = [[CTTelephonyNetworkInfo alloc] init];
4 NSString *currentRadioAccessTechnology = info.currentRadioAccessTechnology;
5 if (currentRadioAccessTechnology) {
6 if ([currentRadioAccessTechnology isEqualToString:CTRadioAccessTechnologyLTE]) {
7 return kReachableVia4G;
8 } else if ([currentRadioAccessTechnology isEqualToString:CTRadioAccessTechnologyEdge] || [currentRadioAccessTechnology isEqualToString:CTRadioAccessTechnologyGPRS]) {
9 return kReachableVia2G;
10 } else {
11 return kReachableVia3G;
12 }
13 }
14 }
15
16 if ((flags & kSCNetworkReachabilityFlagsTransientConnection) == kSCNetworkReachabilityFlagsTransientConnection) {
17 if((flags & kSCNetworkReachabilityFlagsConnectionRequired) == kSCNetworkReachabilityFlagsConnectionRequired) {
18 return kReachableVia2G;
19 }
20 return kReachableVia3G;
21 }
22 return kReachableViaWWAN;
23 }
1 - (NSString *)nameWithInstance:(id)instance {
2 unsigned int ivarCount = 0;// 成员变量的数量
3 Ivar *ivars = class_copyIvarList([self class], &ivarCount);// 获取这个类的 成员变量
4 NSString *key = nil;
5 for (int i=0; i<ivarCount; i++) {
6 Ivar thisIvar = ivars[i];
7 // 获取变量的类型，判断是否是对象
8 NSString *type = [NSString stringWithUTF8String:ivar_getTypeEncoding(thisIvar)];
9 if (![type hasPrefix:@"@"]) {
10 continue;
11 }
12 if (object_getIvar(self, thisIvar) == instance) {// 获取实例对象的成员变量与传入实例对象的成员变量比较
13 key = [NSString stringWithUTF8String:ivar_getName(thisIvar)];// 取得实例对象的成员变量名称
14 break;
15 }
16 }
17 free(ivars);
18 return key;
19 }
20
21 #define varName(var) [NSString stringWithFormat:@"%s", #var]
22 NSString *abc = varName(abc);
23 NSLog(@"%@", abc);