rak*_*hbs 34
设置backgroundColor为clearColor使按钮透明.
例如,尝试下面的代码.您可以根据需要配置和更改borderAlpha,cornerRadius和颜色.
let borderAlpha : CGFloat = 0.7
let cornerRadius : CGFloat = 5.0
button.frame = CGRectMake(100, 100, 200, 40)
button.setTitle("Get Started", forState: UIControlState.Normal)
button.setTitleColor(UIColor.whiteColor(), forState: UIControlState.Normal)
button.backgroundColor = UIColor.clearColor()
button.layer.borderWidth = 1.0
button.layer.borderColor = UIColor(white: 1.0, alpha: borderAlpha).CGColor
button.layer.cornerRadius = cornerRadius
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