IOS中的响应者链

响应者链就是当子视图不响应,父视图有响应事件,父视图响应

#import "RootViewController.h"
#import "ResponderView.h"
@interface RootViewController ()@end@implementation RootViewController- (void)viewDidLoad {[super viewDidLoad];// Do any additional setup after loading the view.ResponderView *viewTop = [[ResponderView alloc] initWithFrame:CGRectMake(0, 0, 320, 284)];viewTop.tag = 100;viewTop.backgroundColor = [UIColor redColor];[self.view addSubview:viewTop];[viewTop release];ResponderView *viewDow = [[ResponderView alloc] initWithFrame:CGRectMake(0, 284, 320, 284)];viewDow.tag = 101;viewDow.userInteractionEnabled = NO;viewDow.backgroundColor = [UIColor yellowColor];[self.view addSubview:viewDow];[viewDow release];ResponderView *viewNe1 = [[ResponderView alloc] initWithFrame:CGRectMake(40, 40, 240, 204)];viewNe1.tag = 102;viewNe1.backgroundColor = [UIColor greenColor];[viewDow addSubview:viewNe1];[viewNe1 release];ResponderView *viewNe2 = [[ResponderView alloc] initWithFrame:CGRectMake(40, 40, 160, 124)];viewNe2.tag = 103;viewNe2.backgroundColor = [UIColor blueColor];[viewNe1 addSubview:viewNe2];[viewNe2 release];UILabel *lab = [[UILabel alloc] initWithFrame:CGRectMake(20, 50, 100, 100)];lab.backgroundColor = [UIColor greenColor];// lab.userInteractionEnabled = NO;lab.tag = 104;[viewTop addSubview:lab];[lab release];UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];// btn.backgroundColor = [UIColor blueColor];btn.frame = CGRectMake(0, 0, 50,50);btn.tag = 105;//btn.userInteractionEnabled = NO;[btn setTitle:@"按钮" forState:UIControlStateNormal];[lab addSubview:btn];
}- (void)didReceiveMemoryWarning {[super didReceiveMemoryWarning];// Dispose of any resources that can be recreated.
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{NSLog(@"我是视图控制器 我响应!");
}
@end

#import "ResponderView.h"@implementation ResponderView- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{switch (self.tag) {case 100:NSLog(@"红色视图");break;case 101:NSLog(@"黄色视图");break;case 102:NSLog(@"绿色视图");break;case 103:NSLog(@"蓝色视图");break;case 104:NSLog(@"fdsf视图");break;case 105:NSLog(@"fdsfddddd视图");break;default:break;}
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{}- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event{}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{}@end