Touch events on views inside UI Scroll View - ios

Question

I have Implemented a UIScrollView on MainView as follows:
UIScrollView* scrollView =[[UIScrollView alloc]initWithFrame:CGRectMake(-160, -540, 480, 1300)];
[scrollView addSubview:self.MainView];
scrollView.contentSize = CGSizeMake(400, 2000);
[self.view addSubview:scrollView];
I have the following Views under MainView in Storyboard:
Main View ----> View1, View2
I want to implement touch events with View 1 and View 2 separately. For that I have the following code:
UITapGestureRecognizer *tapSlidersView1 = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tapSlidersActionView1:)];
[self.View1 addGestureRecognizer:tapSlidersView1];
UITapGestureRecognizer *tapSlidersView2 = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tapSlidersActionView2:)];
[self.View2 addGestureRecognizer:tapSlidersView2];
And the corresponding event handlers:
- (void)tapSlidersActionView1:(UITapGestureRecognizer *)sender
{
[self.navigationController pushViewController:DropDownView1 animated:YES];
}
- (void)tapSlidersActionView2:(UITapGestureRecognizer *)sender
{
[self.navigationController pushViewController:DropDownView2 animated:YES];
}
The tap events does not seem to work at all. please suggest. Thanks in advance

Answer 1

First thing, you have to make sure that your view is touchable by enabling userInteractionEnabled.
Second, you need to declare numberOfTapsRequired for your tap event.
Then you have your code like this:
UITapGestureRecognizer *tapSlidersView1 = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tapSlidersActionView1:)];
tapSlidersView1.numberOfTapsRequired = 1;
self.View1.userInteractionEnabled = YES;
[self.View1 addGestureRecognizer:tapSlidersView1];

Answer 2

Try following code and also every view is created programmatically..
- (void)viewDidLoad
{
[super viewDidLoad];
UIView *mainView=[[UIView alloc]initWithFrame:CGRectMake(0, 0, self.view.bounds.size.width, self.view.bounds.size.height)];
[mainView setBackgroundColor:[UIColor blackColor ]];
[self.view addSubview:mainView];
UIScrollView* scrollView =[[UIScrollView alloc]initWithFrame:CGRectMake(0, 0,mainView .bounds.size.width, mainView.bounds.size.height)];
scrollView.contentSize = CGSizeMake(400, 2000);
[mainView addSubview:scrollView];
UIView *View1=[[UIView alloc]initWithFrame:CGRectMake(50, 150, 100, 100)];
[View1 setBackgroundColor:[UIColor grayColor]];
[scrollView addSubview:View1];
UIView *View2=[[UIView alloc]initWithFrame:CGRectMake(200, 150, 100, 100)];
[View2 setBackgroundColor:[UIColor greenColor]];
[scrollView addSubview:View2];
UITapGestureRecognizer *tapSlidersView1 = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tapSlidersActionView1:)];
[View1 addGestureRecognizer:tapSlidersView1];
UITapGestureRecognizer *tapSlidersView2 = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tapSlidersActionView2:)];
[View2 addGestureRecognizer:tapSlidersView2];
// Do any additional setup after loading the view from its nib.
}
- (void)tapSlidersActionView1:(UITapGestureRecognizer *)sender
{
//your class
// secViewController *DropDownView1=[[secViewController alloc]init];
[self.navigationController pushViewController:DropDownView1 animated:YES];
}
- (void)tapSlidersActionView2:(UITapGestureRecognizer *)sender
{
//your class
// secViewController *DropDownView2=[[secViewController alloc]init];
[self.navigationController pushViewController:DropDownView2 animated:YES];
}