main.m文件

#import

#import "Student.h"

#import "Person.h"

#pragma mark NSObject常用方法

void objUse() {

Student *stu = [[[Studentalloc] init]autorelease];

// isKindOfClass判斷對象是否屬於某個類或者 子類

if ( [stu isKindOfClass:[Personclass]] ) {

// NSLog(@"stu屬於Person或者繼承自Person");

}

// isMemberOfClass判斷對象是否屬於某個類（不包括子類）

BOOL result = [stu isMemberOfClass:[Student class]];

// NSLog(@"%i", result);

// 直接調用

// [stu test];

// 間接調用

[stuperformSelector:@selector(test)];

// [stu performSelector:@selector(test2:) withObject:@"abc"];

// 延遲2秒後調用test2:方法

[stu performSelector:@selector(test2:)withObject:@"abc"afterDelay:2];

}

void reflect() {

// 類的反射

NSString *str = @"Person";

Class class = NSClassFromString(str);

Person *person = [[class alloc] init];

NSLog(@"%@", person);

// Class變成字符串

NSString *name = NSStringFromClass([Personclass]);

// 方法的反射

NSString *method = @"test";

SEL selector = NSSelectorFromString(method);

[personperformSelector:selector];

// 將SEL轉換為字符串

NSString *selectorName = NSStringFromSelector(selector);

[personrelease];

}

int main(int argc,const char * argv[])

{

@autoreleasepool {

reflect();

}

return 0;

}

Person.h文件

#import

@interface Person :NSObject

- (void)test;

@end

Person.m文件

#import "Person.h"

@implementation Person

- (void)test {

NSLog(@"調用了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(@"調用了test方法");

}

- (void)test2:(NSString *)a {

NSLog(@"調用了test2方法:%@", a);

}

@end