touchesBegan and touchesEnded detected on another subview - ipad

Question

i really got stuck in a week about this case.
i have a UIBarButtonItem inside UINavigationItem, the hierarchy is like this
The BarButtonItem is a wrapper of segmentedControl. The UIBarbuttonitem and UIsegmentedControl are made programmatically, but the others are made in IB.
in this case, i want to show a view after pressing or touching the barbuttonitem. In several thread i read in this forum, i knew that UIBarbuttonItem didn't inherit UIResponder, so i choose the NavigationBar to get the touch, and i define a frame for it.
this is the code i made :
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
navBar = self.navigationController.navigationBar;
int index = _docSegmentedControl.selectedSegmentIndex;
NSLog(#"index di touches began : %d", index);
CGFloat x;
if (index == 0) {
x = 0.0;
}else if (index == 1) {
x = widthSegment + 1;
}else if (index == 2) {
x = 2*widthSegment + 1;
}else if (index == 3) {
x = 3*widthSegment+ 1;
}else if (in dex == 4) {
x = 4*widthSegment + 1;
}
CGRect frame = CGRectMake(x, 0.00, widthSegment, 46.00);
UITouch *touch = [touches anyObject];
CGPoint gestureStartPoint = [touch locationInView:navBar];
NSLog(#"gesturestart : %f, %f", gestureStartPoint.x, gestureStartPoint.y);
if (CGRectContainsPoint(frame, gestureStartPoint)) {
[NSObject cancelPreviousPerformRequestsWithTarget:self selector:#selector(segmentItemTapped:) object:[self navBar]];
NSLog(#"cancel popover");
}
}
the navBar was declare in myViewController.h and i set it as an IBOutlet.
-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{
int index = _docSegmentedControl.selectedSegmentIndex;
NSLog(#"index di touches ended : %d", index);
navBar = self.navigationController.navigationBar;
CGFloat x;
if (index == 0) {
x = 0.0;
}else if (index == 1) {
x = widthSegment + 1;
}else if (in dex == 2) {
x = 2*widthSegment + 1;
}else if (index == 3) {
x = 3*widthSegment+ 1;
}else if (index == 4) {
x = 4*widthSegment + 1;
}
CGRect frame = CGRectMake(x, 0.00, widthSegment, 46.00);
UITouch *touch = [touches anyObject];
CGPoint gestureLastPoint = [touch locationInView:navBar];
NSLog(#"lastPOint : %d", gestureLastPoint);
if (CGRectContainsPoint(frame, gestureLastPoint)) {
if (touch.tapCount <= 2) {
[self performSelector:#selector(segmentItemTapped:) withObject:nil afterDelay:0.0];
}
}
}
touchesBegan and touchesEnded was detected when i tap at the toolbar, NOT in the navbar.
i did implemented the hitTest method like this :
- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event {
UIView *touchedView = [super hitTest:point withEvent:event];
NSSet* touches = [event allTouches];
// handle touches if you need
return touchedView;
}
but it still nothing get better.
Somebody can decribe why this is happen?
Regards
-Risma-

Answer 1

you can simply add an action to the barbutton item like
[self.mybarbutton setAction:#selector(barButtonTapped:)];
[self.mybarbutton setTarget:self];