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POWhy is my attempt to display an image over the background causing a white display?
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copied!<p>I have a background coming from Default-568h@2x.png. I want to display a shrunk PNG over part of the background, but calling:</p> <pre><code>[[CJSHCardView alloc] initWithScale:.1]; </code></pre> <p>turns the display white. This does not happen if I comment this line, but in the function call, even if I make it return immediately it turns the display white after half a second:</p> <pre><code>- (id)initWithScale:(float)scale { UIImage *img = [UIImage imageNamed:@"note.png"]; self = [super initWithImage:img]; if (self != nil) { self.frame = CGRectMake(0, 0, img.size.width * scale, img.size.height * scale); UIImageView *myImage = [[UIImageView alloc] initWithFrame:self.frame]; myImage.opaque = NO; [self addSubview:myImage]; } return self; } </code></pre> <p>Moving/copying the return statement to be the first in initWithScale makes no discernible change from how it is with the return statement properly at the end: a brief view of the background, followed by a white screen. note.png is in "Supporting Files".</p> <p>Do you see any gotchas where I can change things so that a shrunken version of the note (maintaining aspect ratio) displays? The note.jpg image does not have a pixel of white.</p> <p>Thanks,</p> <p>--EDIT--</p> <p>Regarding the first comment:</p> <pre><code>@implementation CJSHCardView : UIImageView - (id)initWithFrame:(CGRect)frame { NSAssert(NO, @"Call initWithHeight instead."); return self; } </code></pre> <p>Does that answer your question?</p> <p>--SECOND EDIT--</p> <p>Thank you for your response and your code, Nick. I have slightly altered it to fit ARC and to initially set a fixed-width scale, but I was a little unsure of what method to put it in. I tried the ViewController's viewDidLoad() method, but that resulted in the background being shown without hide or hair of the note. My present viewDidLoad() method reads:</p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. UIImage *backgroundImage = [UIImage imageNamed:@"Default-568h"]; CGRect containerRect = CGRectZero; containerRect.size = [backgroundImage size]; UIView *containerView = [[UIView alloc] initWithFrame:containerRect]; float scale=.1; UIImageView *backgroundView = [[UIImageView alloc] initWithImage:backgroundImage]; [containerView addSubview:backgroundView]; [backgroundView sizeToFit]; // [backgroundView release]; UIImage *noteImage = [UIImage imageNamed:@"note"]; CGSize noteSize = [noteImage size]; UIImageView *noteView = [[UIImageView alloc] initWithImage:noteImage]; [noteView setContentMode:UIViewContentModeScaleAspectFit]; [noteView setFrame:CGRectMake(0, 0, noteSize.width * scale, noteSize.height * scale)]; [containerView addSubview:noteView]; // [noteView release]; } </code></pre> <p>Thanks,</p>

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