iOS 随笔小技巧 弱self 打印当前类行数列数，多人开发自动适配pch地址，获取设备uid的信息

$(SRCROOT)/PrefixHeader.pch自动适配pch地址

__weak __block typeof(self) weakself = self;

  __weak typeof(self)weakSelf = self;

#define DN_DEBUG_LOG(fmt, ...)  

{NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__); }

 NSDictionary *ifs = [self fetchSSIDInfo];

    //NSString *ssid = [[ifs objectForKey:@"SSID"] lowercaseString];

    NSString *ssid =ifs[@"SSID"];

    NSLog(@"ifs --%@ , wifi设备名称--%@",ifs,ssid);

- (id)fetchSSIDInfo {

    NSArray *ifs = (__bridge_transfer id)CNCopySupportedInterfaces();

    //NSLog(@"Supported interfaces: %@", ifs);

    id info = nil;

    for (NSString *ifnam in ifs) {

        info = (__bridge_transfer id)CNCopyCurrentNetworkInfo((__bridge CFStringRef)ifnam);

        //NSLog(@"%@ => %@", ifnam, info);

        if (info && [info count]) { break; }

    }

    return info;

}

  //这句是支持汉字url编译

//                NSString *strdn = [urlstr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];