object_getClassName得到类名字符串 ~~~ /** * Returns the class name of a given object. * * @param obj An Objective-C object. * * @return The name of the class of which \e obj is an instance. */ OBJC_EXPORT const char *object_getClassName(id obj) __OSX_AVAILABLE_STARTING(__MAC_10_0, __IPHONE_2_0); ~~~ ~~~ #import "ViewController.h" #import <objc/runtime.h> #import "Person.h" @interface ViewController () @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. Person * p1 = [[Person alloc] init]; const char * cName; cName = object_getClassName(p1); NSLog(@"%s", cName); } ~~~ 输出：