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PODismiss UIScrollView based on touch coordinates on UIImageView embedded into the UIScrollView
 

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  1. PODismiss UIScrollView based on touch coordinates on UIImageView embedded into the UIScrollView
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    <p>There is a <code>UITableView</code> with many photos. As a photo is tapped, a <code>modalView</code> is presented with <code>UIScrollView</code>, which further has an <code>UIImageView</code> embedded into it. The tapped image is presented here (similar to the Facebook app). Now, i can move the image vertically using <code>touchesMoved</code> and <code>CGRectMake</code>. What i want to achieve is that when i drag the image vertically, on reaching a certain threshold, the ImageView &amp; ScrollView should disappear and we should be back to the tableView.</p> <p>Image moved using:</p> <pre><code>- (void) touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { UITouch * touch = [touches anyObject]; CGPoint pos = [touch locationInView: [UIApplication sharedApplication].keyWindow]; NSLog(@"%f", pos.y); if (pos.y&gt;50&amp;&amp;pos.y&lt;430){ [UIView setAnimationDelay:0]; [UIView animateWithDuration:0.4 animations:^{_photoImageView.frame=CGRectMake(0,pos.y-100,320,200);} completion:^(BOOL finished){ }]; } } </code></pre> <p>The action to return control to the tableView is needed here:</p> <pre><code>- (void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event { UITouch * touch = [touches anyObject]; CGPoint pos = [touch locationInView: [UIApplication sharedApplication].keyWindow]; if (pos.y&gt;50&amp;&amp;pos.y&lt;430){ [UIView setAnimationDelay:0]; [UIView animateWithDuration:0.4 animations:^{_photoImageView.frame=CGRectMake(0,140,320,200);} completion:^(BOOL finished){ }]; } else if(pos.y&lt;50||pos.y&gt;430) //Code needed here !! ; } </code></pre> <p>Further, if transparency can be achieved on the <code>imageView</code> background (i.e. Scrollview) such that the table view is visible with certain Alpha, that would be highly appreciated.</p>
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    1. USVineet Singh
    1. USn00bProgrammer
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    1. COare you adding UIView or UIViewController
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      1. PODismiss UIScrollView based on touch coordinates on UIImageView embedded into the UIScrollView
      1. USLochana Ragupathy
    2. COIt is a UIView.
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      1. PODismiss UIScrollView based on touch coordinates on UIImageView embedded into the UIScrollView
      1. USn00bProgrammer
    3. CO[view removeFromSuperView]; you didn't try this where view is your scroll view
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      1. PODismiss UIScrollView based on touch coordinates on UIImageView embedded into the UIScrollView
      1. USLochana Ragupathy
 

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