How to make UIToolbar have a Clear Background?

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渐次进展 2021-02-05 12:54

I have a UIToolbar that has a white tint, with a bar button item, followed by some flexible space, followed by another bar button item. I would like to make the toolbar complete

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  •  陌清茗
    陌清茗 (楼主)
    2021-02-05 13:49

    It can be done without subclassing in iOS 6+ with setting the property translucent to `YES.

    This will not work in iOS 5 in below. Here's how it can be done without subclassing toolbar:

    const float colorMask[6] = {222, 255, 222, 255, 222, 255};
    UIImage *img = [[UIImage alloc] init];
    UIImage *maskedImage = [UIImage imageWithCGImage: CGImageCreateWithMaskingColors(img.CGImage, colorMask)];
    
    [self.toolbar setBackgroundImage:maskedImage forToolbarPosition:UIToolbarPositionAny barMetrics:UIBarMetricsDefault];
    

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