OC之【NSObject使用】

main.m文件
#import <Foundation/Foundation.h>
#import "Student.h"
#import "Person.h"
 
常用方法
void
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
performSelector:@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
    //  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);
performSelector:selector];
     
    //  将SEL转换为字符串
NSString *selectorName = NSStringFromSelector(selector);
     
     
release];
}
 
int main(int argc,const char
{
 
    @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"
 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
 
 @end
 
 
Student.m文件
#import "Student.h"
 Student
- (void)test {
    NSLog(@"调用了test方法");
}
 
- (void)test2:(NSString
    NSLog(@"调用了test2方法:%@", a);
}
 
 @end