how to get the tag of the UIImageView I'm tapping?

Question

i have several UIImageView, each of them has a tag; and I have an array of Images, what i want to do is: when user tap one of the UIImageView, the app give back the certain

Answer 1

Instead of using a UIImageView why don't you use an UIButton. That way you can simply add a listener for UITouchDown events. You can tag each button so that in your touchDown method you can find which button was pressed.

    UIButton *button = [[UIImageView alloc] initWithFrame:CGRectMake(10, i*100 + i*15, 300, 100)];
    button.backgroundColor = [UIColor blueColor];
    button.tag = i;
    [button addTarget:self action:@selector(touchDown:) controlEvent:UIControlEventTouchDown]; 

And inside of the touchDown: method you simply have to cast the sender to a UIButton in order to access the tag.

- (void)touchDown:(id)sender
{
    UIButton* button = (UIButton*)sender;
    switch(button.tag)
    {
        case TAG1:
           break;
        //etc
    }
}