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iosobjective-ctouchuitouch

How to find out what view a touch event ended at?


I wish to drag a UIImage on to one of several UIButtons and have it repositioned based on which button I drag it to.

The problem I've ran in to is that UITouch only records the view where my touch began, I'd like to access the view my touch ends at. How can I do this?

Code:

-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [touches anyObject];
    CGPoint location = [touch locationInView:self.view];

    dealerBtnOrigin = [touch locationInView:self.view];

    //NSLog(@"%u %u",touch.view.tag, ((UIView *)[dealerBtns objectAtIndex:[table getButtonSeat]]).tag);
    //CHECK TO SEE WHICH BUTTON WAS TOUCHED
    if (touch.view == ((UIView *)[dealerBtns objectAtIndex:[table getButtonSeat]]))
    {
        ((UIView *)[dealerBtns objectAtIndex:[table getButtonSeat]]).center = location;
    }
}

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [touches anyObject];
    CGPoint location = [touch locationInView:self.view];


    if (touch.view == ((UIView *)[dealerBtns objectAtIndex:[table getButtonSeat]]))
    {
        ((UIView *)[dealerBtns objectAtIndex:[table getButtonSeat]]).center = location;
    }
}

-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [touches anyObject];
    CGPoint location = [touch locationInView:self.view];
    UIView *endView = [self.view hitTest:location withEvent:nil];

    if (touch.view == ((UIView *)[dealerBtns objectAtIndex:[table getButtonSeat]]))
    {
        NSLog(@"%u %u",endView.tag, touch.view.tag);
        if([buttons containsObject:(UIButton *)endView])
        {
            [[dealerBtns objectAtIndex:[table getButtonSeat]] setHidden:YES];
            [table passButton:touch.view.tag];
            [[dealerBtns objectAtIndex: touch.view.tag] setHidden:NO];
        }
        ((UIView *)[dealerBtns objectAtIndex:[table getButtonSeat]]).center = dealerBtnOrigin;
    }

}

Solution

  • It is very easy to detect your finally touched view, try this code

    -(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
    {
        CGPoint location = [[touches anyObject] locationInView:self.view];
        CGRect fingerRect = CGRectMake(location.x-5, location.y-5, 10, 10);
    
        for(UIView *view in self.view.subviews){
            CGRect subviewFrame = view.frame;
    
            if(CGRectIntersectsRect(fingerRect, subviewFrame)){
                //we found the finally touched view
                NSLog(@"Yeah !, i found it %@",view);
            }
    
        }
    
    }