UIView transparent gradient

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This was an embarrassingly easy fix: apply a CAGradientLayer as my subview’s mask.

CAGradientLayer *gradientLayer = [CAGradientLayer layer];
gradientLayer.frame = _fileTypeScrollView.bounds;
gradientLayer.colors = [NSArray arrayWithObjects:(id)[UIColor whiteColor].CGColor, (id)[UIColor clearColor].CGColor, nil];
gradientLayer.startPoint = CGPointMake(0.8f, 1.0f);
gradientLayer.endPoint = CGPointMake(1.0f, 1.0f);
_fileTypeScrollView.layer.mask = gradientLayer;

Thanks to Cocoanetics for pointing me in the right direction!

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