点击手势无法在UIimageview上运行

Question

在我的应用程序中,我有三个随机移动的uiimageview.单击图像视图时,它应该隐藏.但我的tapgesture无法正常工作.单击它就没有隐藏.

- (void)showAlert1:(UITapGestureRecognizer *)sender
{
    if (image1.tag == 1)
    {
        image1.hidden = TRUE;
    }
    else
    {
        image1.hidden = FALSE;
    }
}

- (void)showAlert2:(UITapGestureRecognizer *)sender
{
    if (image1.hidden == TRUE && image3.hidden == FALSE)
    {
        image2.hidden = TRUE;
    }
    else
    {
        image2.hidden = FALSE;
    }
}

- (void)showAlert3:(UITapGestureRecognizer *)sender
{
    if (image1.hidden == TRUE && image2.hidden == TRUE)
    {
        image3.hidden = TRUE;
    }
    else
    {
        image3.hidden = FALSE;
    }
}

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    if (image1.tag == 1)
    {
        image1.userInteractionEnabled = YES;

        UITapGestureRecognizer* tap = [[UITapGestureRecognizer alloc] initWithTargetelf actionselector(imageAlerts];
        tap.numberOfTapsRequired = 1;
        [image1 addGestureRecognizer:tap];
    }

    if (image2.tag == 2)
    {
        image2.userInteractionEnabled = YES;

        UITapGestureRecognizer* tap = [[UITapGestureRecognizer alloc] initWithTargetelf actionselector(showAlert2];
        tap.numberOfTapsRequired = 1;
        [image2 addGestureRecognizer:tap];
    }

    if (image3.tag == 3) 
    {
        image3.userInteractionEnabled = YES;

        UITapGestureRecognizer* tap = [[UITapGestureRecognizer alloc] initWithTargetelf actionselector(showAlert3];
        tap.numberOfTapsRequired = 1;
        [image3 addGestureRecognizer:tap];
    }
}

谁能帮我？

提前致谢

Answer 1

如果您在xib中添加了图像,请勾选userInteractionEnabled和multipleTouch在xib文件中

要么

image.userInteractionEnabled = YES;
image.multipleTouchEnabled = YES;

在ViewDidLoad中