多个UIImageView添加tap事件 并分别进行处理

- (void)viewDidLoad{    [super viewDidLoad];    // Do any additional setup after loading the view from its nib.        //初始化    isSelected = NO;        UIImageView *imageView;    UIImage *image;    int i;    int x;//x坐标    int y;//y坐标    //创建触发器            for (i=0; i<9; i++) {        image = [UIImage imageNamed:[NSString stringWithFormat:@"%d.jpg",i+1]];        imageView = [[UIImageView alloc] initWithImage:image];        //创建imageview坐标        x = (i%3)*102;        y = (i/3)*152+2;        imageView.frame = CGRectMake(x, y, 100, 150);        //标记tag        imageView.tag = i;        //要早imageView上添加tag事件  必须设置 userInteractionEnabled 属性值为YES         imageView.userInteractionEnabled = YES;        UITapGestureRecognizer * tgr = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onClick:)];        //在uiview上面添加触发器        [imageView addGestureRecognizer:tgr];        //填充方式        imageView.contentMode = UIViewContentModeScaleAspectFit;        [self.view addSubview:imageView];        [imageView release];    }    }

-(void)onClick:(UIGestureRecognizer *)sender{        int i = sender.view.tag;            for (UIImageView *imageView in self.view.subviews) {        if (imageView.tag == i) {                        if (isSelected==NO) {                imageView.frame = CGRectMake(0, 0, 320, 460);               // imageView.contentMode = UIViewContentModeScaleAspectFill;                imageView.center = self.view.center;                //将点击的图片放到最上层 会更改数组的顺序                [self.view bringSubviewToFront:imageView];                isSelected = YES;            }else{                imageView.frame = CGRectMake((i%3)*102, (i/3)*152+2, 100, 150);                //imageView.contentMode = UIViewContentModeScaleToFill;                isSelected = NO;            }                }    }        for(UIImageView *imageView in self.view.subviews){        if (imageView.tag != i) {            if (isSelected == YES) {                imageView.hidden = YES;            }else{                imageView.hidden = NO;            }        }    }        }