实现iOS中的target action控件
#import <Foundation/Foundation.h>@interface Sample : NSObject {SEL action;id target;}@property SEL action;@property (assign) id target;-(void)addTarget:(id) t action:(SEL) s;-(void)sample_dosomthing;@end#import "Sample.h"@implementation Sample@synthesize action;@synthesize target;-(void)dealloc{target = nil;[super dealloc];}-(void)addTarget:(id) t action:(SEL) s{self.action = s;self.target = t;}-(void)sample_dosomthing{[self.target performSelector:self.action];}@end-(void)control_dosomthing{NSLog(@"control_dosomthing");}- (void)viewDidLoad { [super viewDidLoad];Sample *sample1 = [Sample new];[sample1 addTarget:self action:@selector(control_dosomthing)];}