Question

Have a view which I want to make transparent, it works on the simulator, but for some reason not on my device. I have no idea why this happens. My code looks like this:

- (void)viewDidLoad

    [...]
    UIView *transparentBackgroundView = [[UIView alloc] initWithFrame:self.view.frame];

    // Doesn't work on my device. 
    transparentFlipBackgroundView.backgroundColor = [UIColor clearColor];

    // I have also tried. 
    // transparentFlipBackgroundView.alpha = 0;
    // transparentFlipBackgroundView.opaque = YES
    // transparentFlipBackgroundView.layer.backgroundColor = [UIColor clearColor].CGColor;

    // I later add the view to an array...
    self.pageViews = [[NSMutableArray alloc] initWithObjects:transparentFlipBackgroundView, lastPage, nil];  
    [...]
}

Any ideas why this happens, and how should I make the UIView transparent?

Answer 1

Have you got another device you can try it on? If it works on the simulator, surely it should work on your device too? If you’d like, I wouldn’t mind trying on one of my devices.