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POUIScrollView phantom subviews
 

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    <p>I am loading a view from a nib file using:</p> <pre><code>NSArray *nibViews = [[NSBundle mainBundle] loadNibNamed:@"AnalysisView" owner:self options:nil]; AnalysisView *gridView = [nibViews objectAtIndex: 0]; </code></pre> <p>The nib contains a scrollview called gridScrollView and in the AnalysisView implementation file I have a method which adds views as subviews to the scrollview:</p> <pre><code>for (NSInteger i = [results count] -1; i &gt;= 0; i--) { Result *result = [results objectAtIndex:i]; [self loadResult: result]; } - (void) loadResult: (Result *) result { NSArray *nibViews = [[NSBundle mainBundle] loadNibNamed:@"GridView" owner:self options:nil]; GridView *gridView = [nibViews objectAtIndex: 0]; gridView.tag = self.graphCount; CGRect gridFrame = gridView.frame; CGFloat yOffset = gridFrame.size.height * self.graphCount; gridView.frame = CGRectMake(0, yOffset, gridFrame.size.width, gridFrame.size.height); [self.gridScrollView addSubview: gridView]; self.gridScrollView.contentSize = CGSizeMake(self.gridScrollView.frame.size.width, (yOffset + gridFrame.size.height)); self.graphCount++; } </code></pre> <p>I have set the scrollviews delegate to be AnalysisView and hooked up the did end decelaring method</p> <pre><code>-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView { NSLog(@"%d", [scrollView.subviews count]); } </code></pre> <p>When the scrollViewDidEndDecelerating method fires it reports that the number of subviews is 5. 3 of these subviews are GridViews which I expect. However there are 2 UIImageViews which I have no idea why they are there.</p> <p>This is an issue because I intend on retrieving the views with viewWithTag in the scrollViewDidEndDecelerating method and calling a method on the view, however whenever I try to retrieve a view with a tag of 0 I will retrieve one of the UIImageView's and this causes my app to crash because the method cannot be called on an image view.</p> <p>I know a way round this is to store my GridViews in a seperate instance array and reference them from there. But I'm curious to know what the 2 UIImageViews are and how they got there.</p>
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