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在UIImageView上使用淡色
我有自己的子类UIButton。我添加UIImageView它并添加图像。我想用淡淡的颜色在图像上绘制它，但是它不起作用。 到目前为止，我有： - (id)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { self.backgroundColor = [UIColor clearColor]; self.clipsToBounds = YES; self.circleView = [[UIView alloc]init]; self.circleView.backgroundColor = [UIColor whiteColor]; self.circleView.layer.borderColor = [[Color getGraySeparatorColor]CGColor]; self.circleView.layer.borderWidth = 1; self.circleView.userInteractionEnabled = NO; self.circleView.translatesAutoresizingMaskIntoConstraints = NO; [self addSubview:self.circleView]; self.iconView = [[UIImageView alloc]init]; [self.iconView setContentMode:UIViewContentModeScaleAspectFit]; UIImage * …