Question

我有一个滚动视图，其中添加了作为子视图的图像。我需要能够选择或点击图像。换句话说，捕获被轻拍的图像的名称。请参阅下面的代码。

for (j = 1; j <= 12; j++)
{
    NSString *imageName = [NSString stringWithFormat:@"%@",[months objectAtIndex:j-1]];
    NSLog(@"imagename is %@",imageName);
    UIImage *image = [UIImage imageNamed:imageName];
    UIImageView *imageView = [[UIImageView alloc] initWithImage:image];


    CGRect rect = imageView.frame;

    rect.size.height = smallScrollObjHeight;
    rect.size.width = smallScrollObjWidth;
    imageView.frame = rect;
    imageView.tag = j;  
    [smalltapRecognizer setNumberOfTapsRequired:1];
    [smalltapRecognizer setDelegate:self];
    [imageView addGestureRecognizer:smalltapRecognizer];
    [smalltapRecognizer release];*/
    NSLog(@"tag value is %d ",imageView.tag);
    [monthscroll addSubview:imageView];
    [imageView release];
}   


[self layoutsmallScrollImages];
UITapGestureRecognizer *smalltapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(smalltapped:)];
[smalltapRecognizer setNumberOfTapsRequired:1];
[smalltapRecognizer setDelegate:self];
[monthscroll addGestureRecognizer:smalltapRecognizer];
[smalltapRecognizer release];

// ----------------------------

- （无效）smalltapped：（ID）发送方 { 的NSLog（@ “抽头”）; //需要知道如何从这里开始。 }

我的程序检测到水龙头并在小型功能中打印水龙头日志。我需要知道如何捕捉所选或点击的图像的名称。

Answer 1

为什么不直接在scrollView中使用UIButtons？这样你可以使用标准的UIButton方法，不需要打扰手势识别器，并且你将能够看到按下按钮的图像。

Answer 2

将唯一标记值与每个UIImageView实例相关联：

在viewDidLoad中或初始化图像的位置：

myImageView1.tag = 1;
myImageView2.tag = 2;
myImageView3.tag = 3;

然后尝试手势或类似的东西：

-(void)touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event       
{
UITouch *touch = [[event allTouches] anyObject];
int t = [touch view].tag;
UIImageView *imageView = (UIImageView *) [self.view  viewWithTag:t];
//your logic here since you have recognized the imageview on which user touched
}

之前没有尝试过类似的东西，但它可能会起作用。

编辑：我从另一个类似问题的here复制粘贴此代码所以请根据您的要求调整条件。

在UIScrollview中选择特定图像

2 个答案: