iphone - iOS : detect UIImageView for UITouch Events

Question

我添加了一些 UIImageView 动态并用不同的图像填充它，我想做的是“允许用户为任何 UIImageView 设置位置”，为此我使用了

-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event 
{
    //Here I want the object of particular UIImageView on which user touched.
}

在我正在做的那种方法中，

NSLog(@"%@",[touches anyObject]);

它返回输出

<UITouch: 0x68b95e0> phase: Began tap count: 1 window: <UIWindow: 0x68875d0; frame = (0 0; 320 480); layer = <UIWindowLayer: 0x68b6470>> view: <UIImageView: 0x6a74cf0; frame = (83.7763 83.7763; 182.447 182.447); transform = [0.968912, -0.247404, 0.247404, 0.968912, 0, 0]; alpha = 0.8; opaque = NO; tag = 3; layer = <CALayer: 0x6a74980>> location in window: {161, 230} previous location in window: {161, 230} location in view: {52.7761, 105.448} previous location in view: {52.7761, 105.448}

请注意，在上面的输出中，它显示了我的 UIImageView 我触摸的对象。但我想要那个对象!!!!

我想要我的 UIImageView哪个用户触摸了？，我已经设置了属性userInteractionEnabled=YES所以问题不在于它!

我使用下面的代码来得到它，但它不会工作。

NSInteger tag=[[[touches anyObject] view] tag]; //It only returns tag of UIView tag

我谷歌它，但没有解决方案!

预先感谢您的任何帮助!

Answer 1

干得好:

这仅适用于一个 ImageView ，您可以通过相同的 if 语句检测另一个 ImageView 。

-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event 
{
    UITouch *touch = [touches anyObject]; 
    CGPoint touch_point = [touch locationInView:self.view];

    if (![imageView pointInside:touch_point withEvent:event]) 
    {
        NSLog(@"point inside imageview");
    }
} 

或者你也可以这样做:p

-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event 
{
    UITouch *touch = [touches anyObject];

    if (touch.view == iv)
    {
        NSLog(@"i got you");
    }
}

像这样:(iv 和 iv2 是 2 个不同的 UIImageView`s)

if (touch.view == iv)
{
    NSLog(@"i got you");
}

if (touch.view == iv2)
{
    NSLog(@"i got you too :p");
}