如何确定用户是否触摸了工具栏项？

Question

I had a toolbar in which i am adding 3 buttons as UItoolbaritems.Now i am also adding a gesture recogniser also to the toolbar to show and hide that toolbar.But I need to distinguish betwwen whether the touch is coming from the button or outside to carry through my functions.I tried this `

self.navigationController.toolbar.barStyle = UIBarStyleBlackTranslucent;
    self.navigationController.toolbar.frame=CGRectMake(0, [[UIScreen mainScreen] bounds].size.height -12, [[UIScreen mainScreen] bounds].size.width, 44);

    self.navigationController.toolbar.tintColor=[UIColor colorWithRed:40/255.0 green:40/255.0 blue:40/255.0 alpha:1.0];  


    buttonGoBack = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"back_icon.png"] style:UIBarButtonItemStylePlain target:self action:@selector(backButtonTouchUp:)];

buttonGoBack.tag=1;

    UIBarButtonItem *fixedSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
    fixedSpace.width = 30;


    buttonGoForward = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"forward_icon.png"] style:UIBarButtonItemStylePlain target:self action:@selector(forwardButtonTouchUp:)];
    buttonGoForward.tag=2;

    UIBarButtonItem *flexibleSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];

    UITapGestureRecognizer *gestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTap:)];
    [self.navigationController.toolbar addGestureRecognizer:gestureRecognizer];



      NSMutableArray *toolBarButtons = [[NSMutableArray alloc] init];

    [toolBarButtons addObject:buttonGoBack];
    [toolBarButtons addObject:fixedSpace];
    [toolBarButtons addObject:buttonGoForward];

`

and i had done the gesture recogniser as `

 if(sender.view.tag==1)
           [self performSelector:@selector(backButtonTouchUp:) withObject:nil];
        else if(sender.view.tag==2)
           [self performSelector:@selector(forwardButtonTouchUp:) withObject:nil];
         else
          {
     [UIView animateWithDuration:.50 
                      animations:^{
         if(self.navigationController.toolbar.frame.origin.y==[[UIScreen mainScreen] bounds].size.height -12)
                         self.navigationController.toolbar.frame=CGRectMake(0, [[UIScreen mainScreen] bounds].size.height -44, [[UIScreen mainScreen] bounds].size.width, 44);
         else
                            self.navigationController.toolbar.frame=CGRectMake(0, [[UIScreen mainScreen] bounds].size.height -12, [[UIScreen mainScreen] bounds].size.width, 44);   

                      }]
}

` But the buttons actions are not performing.Can anybody help me to find out where i am going wrong?

Answer 1

might be this Solution helps you..! you can isKindOfClass as bellow in to your Gesture Action.

for example you can do it with bellow:-

 NSArray *subs = [self.yourviewcontroller.view subviews];
    for (UIToolbar *child in subs) {
        if ([child isKindOfClass:[UIToolbar class]]) {

            for (UIView *v in [child items])
            {
                if ([v isKindOfClass:[UIBarButtonItem class]])
                {
                    UIBarButtonItem *b = (UIBarButtonItem*)v;

                    NSLog(@"found");
                    //do something with b you can also fond your clickable Barbutton Item.
                }
            }

        }
    }

Or other solution as suggest but Herçules delegate But i need edit this like bellow

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer 
            shouldReceiveTouch:(UITouch *)touch {

    if (touch.view == buttonGoForward) {
        return NO;
    }
    if (touch.view == buttonGoBack) {
        return NO;
    }

    return YES;
}

visit this referance:-

Does Button Tap Event Get Overridden by Tap Gesture Recognizer?

Answer 2

UIGesture View delegate let u ignore touch when UIBarButtonItem is clicked and clicking on UIToolBar will hide your toolbar as u have coded:-

 gestureRecognizer.delegate=self;

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
    if (![touch.view isKindOfClass:[UIToolbar class]]) {
        return NO;
    }
    return YES; // handle the touch
}

Answer 3

The gesture recogniser is set on toolbar so the sender always is toolbar, it means

if(sender.view.tag==1) 

this condition will not work. What you can do instead is to use UIView hitTest:withEvent method or use one action/selector for every button, then you can use tags of individual button to know which bar button has called that action.

[buttonGoBack setAction:@selector(buttonTapped:)]
[fixedSpace setAction:@selector(buttonTapped:)];
[buttonGoForward setAction:@selector(buttonTapped:)];

- (IBAction)buttontapped:(id)sender{
if(sender.tag == 0)
{
  // perform some action
}
else if(sender.tag == 1){
  // perform some action
}
}