Touch functionality on scrollView - iphone

Question

I am working on an app where my task is to get url-links from the database that i created a scroll view and placed images on the scroll. I have written some code that when i click on the image i have to show the url page in a webview which i placed above the scroll view. For this i wrote touch code for getting the url when i click on the image but i got problem like my click is not working on the image and scrollview also but it is working on the down part of the image and scrollview which is a normalview. U can find my touch code below
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch * touch = [[event allTouches] anyObject];
for(int index=0;index<[array count];index++)
{
UIImageView *imgView = [array objectAtIndex:index];
if(CGRectContainsPoint([imgView frame], [touch locationInView:scrollView]))
{
NSString *strgetcontenturl = [[NSString alloc]initWithString:[arrayvideoFile objectAtIndex:index]];
NSURL *url = [NSURL URLWithString:strgetcontenturl];
[webview loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:strgetcontenturl]]];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
[webview loadRequest:requestObj];
}}}
Here array is where i stored all the images init and arrayvideoFile is where I stored all the urls.
Please help.

Answer 1

How did you placed your images to your scollview? ImageView?
I would place them with a UIButton (CustomType), then you can add target to that button and no need to detect touches. Because an UIButton already detects the touch events.
UIButton *button = [UIButton butttonWithType:UIButtonTypeCustom];
UIImage * buttonImage = ....
[button setImage:buttonImage forState:UIControlStateNormal];
button.frame = CGRectMake(x, y, buttonImage.size.width, buttonImage.size.height);
[button addTarget:self
action:#selector(buttonAction:)
forControlEvents:UIControlEventTouchUpInside];
[scrollview addSubview:button];
Edit: Added code

Answer 2

Use below code.
for(int Tag =0; Tag < [array count]; Tag++) {
UIButton *btn_URL = [UIButton butttonWithType:UIButtonTypeCustom];
UIImage * btn_URL = [btn_URL setImage:buttonImage forState:UIControlStateNormal];
btn_URL.frame = CGRectMake(x, y, buttonImage.size.width, buttonImage.size.height);
[btn_URL addTarget:self action:#selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
btn_URL.tag = Tag;
[scrollview addSubview:btn_URL];
}
-(void)buttonAction:(id)sender {
NSURL *URL = [NSURL URLWithString:[NSString stringWithFormat:#"%#",[array objectAtIndex:[sender Tag]]]];
}
Here you can redirect user to URL.
If you need any help then let me know.
Thanks,
Hemang.

Answer 3

just set imgView.userInteractionEnabled=YES; it may help you.
otherwise use this code
UIScrollView *scrollview4preview=[[UIScrollView alloc]initWithFrame:CGRectMake(0, 44, self.view.frame.size.width, self.view.frame.size.height-44)];
scrollview4preview.backgroundColor=[UIColor clearColor];
[self.view addSubview:scrollview4preview];
int yval=0;
for (int i=0; i<[arrary count]; i++) {
UIButton *btn4preview=[[UIButton alloc]init];
btn4preview.tag=i;
btn4preview.frame=CGRectMake(scrollview4preview.frame.origin.x+10, i*yval, 150, 150);
[btn4preview setImage:[UIImage imageNamed:#"YourImageName.png"] forState:UIControlStateNormal];
[btn4preview addTarget:self action:#selector(btnPreviewSelect:) forControlEvents:UIControlEventTouchUpInside];
btn4preview.autoresizingMask=UIViewAutoresizingFlexibleLeftMargin;
[scrollview4preview addSubview:btn4preview];
}
scrollview4preview.contentSize=CGSizeMake(scrollview4preview.frame.size.width, yval+160);
-(void)btnPreviewSelect:(id)sender
{
UIButton *btn=(UIButton *)sender;
NSString *strgetcontenturl = [[NSString alloc]initWithString:[arrary objectAtIndex:btn.tag]];
NSURL *url = [NSURL URLWithString:strgetcontenturl];
[webview loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:strgetcontenturl]]];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
[webview loadRequest:requestObj];
}