Specific action for each buttons in UIScrollView - objective-c

Question

I have an UIScrollView page . On this UIscrollView I have different images inside buttons you can see it in below code, and I want to load this images in UIWebView when I press the buttons, My question is how can I know which button are click. Would you please give me some hint for implementing this?
I'm new to objective-C
Here is my action: I want to have one action for each images, rightnow I have just one action for all images, I one to have one for each image
- (IBAction)openAction:(id)sender {
NSLog(#"test");
}

Answer 1

The actual button is passed to the IBAction. Setting a tag on the button is one way of doing it. If you created outlets for all your buttons in Interface Builder, you can simply do something like this:
- (IBAction)openAction:(id)sender {
UIButton *b = (UIButton *)sender;
if ([b isEqual:self.outletButton1]) {
// Do something with button 1
}
else if ([b isEqual:self.outletButton2]) {
// Do something with button 2
}
}

Answer 2

Don't use Same Tag for Button. Use Different Tag for different button.
For ex [btn setTag:1] .
you can use [btn setTag:i];
Dynamic value

Answer 3

Give each button a unique tag, in your code or in Interface Builder.
Then in your action you can do:
- (IBAction)openAction:(id)sender {
UIButton *b = (UIButton *)sender;
NSLog(#"button %d is pressed", b.tag);
}
I see that you already give your imageviews tags. Those are not buttons! You should instead create UIButtons whose content are images. See UIButton's setImage:forState:
Edit: In response to your question below, here's an example:
NSMutableArray *bArray = [NSMutableArray arrayWithCapacity:kNumImages];
NSUInteger i;
for (i = 1; i <= kNumImages; i++)
{
NSString *imageName = [NSString stringWithFormat:#"image%d.jpg", i];
UIButton *btn = [[UIButton buttonWithType:UIButtonTypeCustom] retain];
btn setImage:imageName forState:UIControlStateNormal];
btn.tag = 100+i;
[bArray addObject:btn];
}

Answer 4

You don't have to add UIButton over UIImageView. Instead, you can set the image for UIButton like this.
[btn setImage:[UIImage imageNamed:#"image1"] forState:UIControlStateNormal];
You can access the image in the action like this:
- (IBAction)openAction:(id)sender {
if([[btn currentImage] isEqual:[UIImage imageNamed:#"image1"]]){
}
NSLog(#"test");
}