根据变量的引用,获取变量名

#import <objc/runtime.h>

#pragma mark - 根据变量的引用,获取变量名

/**

 *根据变量的引用,获取变量名

 */

- (NSString *)nameForInstance:(id)instance ofClass:(Class)targetClass

{

    unsigned int numIvars =0;

    NSString *key=nil;

    Ivar * ivars = class_copyIvarList(targetClass, &numIvars);

    for(int i = 0; i < numIvars; i++)

    {

        Ivar thisIvar = ivars[i];

        const char *type =ivar_getTypeEncoding(thisIvar);

        NSString *stringType =  [NSStringstringWithCString:type encoding:NSUTF8StringEncoding];

        if (![stringType hasPrefix:@"@"])

        {

            continue;

        }

        if ((object_getIvar(targetClass, thisIvar) == instance))

        {

            key = [NSString stringWithUTF8String:ivar_getName(thisIvar)];

            break;

        }

    }

    free(ivars);

    return key;

}