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POHandling a touch in a UITableView while its scroll is decelerating
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  1. POHandling a touch in a UITableView while its scroll is decelerating
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    copied!<p>I have a <code>UITableView</code> inside another <code>UITableview</code>. The first one is placed horizontally, while the second one is a regular <code>UITableView</code>.</p> <p>The horizontal tableview, is a custom class in which I have overloaded the 'gestureRecognizerShouldBegin:' method, this way:</p> <pre><code>- (BOOL)gestureRecognizerShouldBegin:(UIPanGestureRecognizer *)panGestureRecognizer { CGPoint translation = [panGestureRecognizer translationInView:someView]; return fabs(translation.y) &gt; fabs(translation.x); } </code></pre> <p>It basically detects if the user has performed an horizontal or a vertical panning movement over the horizontal tableview. If is vertical, the main tableview scrolls, if it's horizontal, the horizontal tableview scrolls.</p> <p>The problem I'm facing is the following:</p> <ol> <li>I perform a panning touch in the horizontal tableview.</li> <li>The 'x' and 'y' values of the translation var reflect the touch made by the user.</li> <li>The horizontal tableview starts scrolling.</li> <li>The scrolling is decelerating.</li> <li>I perform another panning touch while the scroll is decelerating.</li> <li>The 'x' and 'y' values of the translation var are always 0, no matter how much I move my finger.</li> <li>I put up the finger and then I perform another horizontal panning touch in the horizontal tableview (which has stopped scrolling).</li> <li>The 'x' and 'y' values of the CGPoint returned in the translationInView are correct again, and the scroll movement starts.</li> </ol> <p>So, looks like the 'gestureRecognizerShouldBegin:' method is unable to detect the movement performed by the user while the scroll is moving...</p> <p>I'd appreciate any hints you could give me.</p> <p>Thanks!</p>
 

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