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POPlacing UIViews one after another
 

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  1. POPlacing UIViews one after another
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    <p>I have a view controller which has an array of subviews. These subviews are custom UIViews to be placed one after another vertically. The subviews are not consistent in height; their height is based on the data used when instantiating them. Additionally, I want to support device rotations so that the subview's UILabels will expand horizontally in landscape mode and be shorter.</p> <p>I'm having lots of trouble accomplishing this in a good way. When the view controller is laying out it's subviews, I feel like I have no clean way of figuring out how tall each subview is (because I have instantiated them at this point, but not set their frames). Please refer to my code below to understand my frustration.</p> <p>I would really like it if the <strong><code>layoutSubviews</code></strong> method of the subviews were called before the <strong><code>viewWillLayoutSubviews</code></strong> method of the view controller, but that is not the case.</p> <p><strong><code>MyViewController.m</code></strong></p> <pre><code>.... - (void)initWithDataObjects:(NSArray*)dataObjects { _dataObjects = dataObjects; } - (void)viewDidLoad { mySubviews = [[NSMutableArray alloc] init]; for (DataObject* do in _dataObjects) { MyCustomView *customView = [[MyCustomView alloc] initWithDataObject:do]; [mySubviews addObject:customView]; [self.view addSubview:customView]; } } - (void)viewWillLayoutSubviews { int currentHeight = 0; for (MyCustomView *customView in mySubviews) { int subviewHeight = customView.frame.size.height; // PROBLEM: subviewHeight is 0 because the subview hasn't called layoutSubviews yet.. [customView setFrame:CGRectMake(0, currentHeight, self.view.frame.size.width, subviewHeight)]; currentHeight += subviewHeight; } } </code></pre>
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    1. USCameron Askew
    1. USCameron Askew
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    1. COso whats the proble they arent aligned properly in the view??
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      1. USRaon
    2. COthe way coded above, all the subviews would be on top of each other
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      1. USCameron Askew
    3. COi made a hacky way of doing it where i had a calculateHeight method in the subview which would do some logic to figure out how tall the subview would be...i feel it is definitely not the right way though - since that work is already getting done in the layoutSubviews method of the subview
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      1. POPlacing UIViews one after another
      1. USCameron Askew
 

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