main.m文件
#import <Foundation/Foundation.h>
#import "Student.h"
#import "Person.h"
#pragma mark NSObject常用方法
void objUse() {
Student *stu = [[[Studentalloc]
init]autorelease];
// isKindOfClass判断对象是否属于某个类或者
子类
if ( [stu
isKindOfClass:[Personclass]] ) {
// NSLog(@"stu属于Person或者继承自Person");
}
// isMemberOfClass判断对象是否属于某个类（不包括子类）
BOOL result = [stu
isMemberOfClass:[Student
class]];
// NSLog(@"%i", result);
//
直接调用
// [stu test];
//
间接调用
[stuperformSelector:@selector(test)];
// [stu performSelector:@selector(test2:) withObject:@"abc"];
//
延迟2秒后调用test2:方法
[stu performSelector:@selector(test2:)withObject:@"abc"afterDelay:2];
}
void reflect() {
//
类的反射
NSString *str =
@"Person";
Class class =
NSClassFromString(str);
Person *person = [[class
alloc] init];
NSLog(@"%@", person);
// Class变成字符串
NSString *name = NSStringFromClass([Personclass]);
//
方法的反射
NSString *method =
@"test";
SEL selector =
NSSelectorFromString(method);
[personperformSelector:selector];
//
将SEL转换为字符串
NSString *selectorName =
NSStringFromSelector(selector);
[personrelease];
}
int main(int argc,const
char * argv[])
{
@autoreleasepool {
reflect();
}
return
0;
}
Person.h文件
#import <Foundation/Foundation.h>
@interface Person :NSObject
- (void)test;
@end
Person.m文件
#import "Person.h"
@implementation Person
- (void)test {
NSLog(@"调用了Person的test方法");
}
@end
Student.h文件
#import "Person.h"
@interface Student :Person
- (void)test;
- (void)test2:(NSString *)a;
@end
Student.m文件
#import "Student.h"
@implementation Student
- (void)test {
NSLog(@"调用了test方法");
}
- (void)test2:(NSString *)a {
NSLog(@"调用了test2方法:%@",
a);
}
@end