isKindOfClass和isMemberOfClass 的区别//转自

iOS_Doman

判断对象类型

-(BOOL) isKindOfClass: classObj判断是否是这个类或者这个类的子类的实例

-(BOOL) isMemberOfClass: classObj 判断是否是这个类的实例

测试实例:

#import <Foundation/Foundation.h>  
  
@interface Person : NSObject  
{  
    NSString *name;  
}  
-(void)setName:(NSString*)n;  
  
@end
/////////
#import "Person.h"  
  
@implementation Person  
-(void)setName:(NSString *)n  
{  
    name = n;  
}  
  
@end
///////////
#import "Person.h"  
  
@interface Teacher : Person  
  
-(void)teach;  
  
@end
///////////////
#import "Teacher.h"  
  
@implementation Teacher  
-(void)teach  
{  
    NSLog(@"我教数学");  
}  
@end
////////////
Person *person = [[Person alloc] init];  
   Teacher *teacher = [[Teacher alloc] init];  
     
   //YES  
   if ([teacher isMemberOfClass:[Teacher class]]) {  
        NSLog(@"teacher Teacher类的成员");  
   }  
   //NO  
   if ([teacher isMemberOfClass:[Person class]]) {  
       NSLog(@"teacher Person类的成员");  
   }  
   //NO  
   if ([teacher isMemberOfClass:[NSObject class]]) {  
       NSLog(@"teacher NSObject类的成员");  
   }
////////////
Person *person = [[Person alloc] init];  
Teacher *teacher = [[Teacher alloc] init];  
  
//YES  
if ([teacher isKindOfClass:[Teacher class]]) {  
    NSLog(@"teacher 是 Teacher类或Teacher的子类");  
}  
//YES  
if ([teacher isKindOfClass:[Person class]]) {  
    NSLog(@"teacher 是 Person类或Person的子类");  
}  
//YES  
if ([teacher isKindOfClass:[NSObject class]]) {  
    NSLog(@"teacher 是 NSObject类或NSObject的子类");  
}