UIButton没有名为setTranslatesAutoresizingMaskIntoConstraints的成员

Question

我正在使用xcode 7 beta 2并收到以下错误.我该如何解决？

UIButton没有名为setTranslatesAutoresizingMaskIntoConstraints的成员

for char in keys {
        let btn = UIButton(type: UIButtonType.System) as UIButton

        btn.frame = CGRectMake(0, 0, 20, 20)
        btn.setTitle(char, forState: .Normal)
        btn.sizeToFit()
        btn.titleLabel?.font = UIFont.systemFontOfSize(20)
        btn.setTranslatesAutoresizingMaskIntoConstraints(false)
        btn.backgroundColor = UIColor(hue: (216/360.0), saturation: 0.1, brightness: 0.81, alpha: 1)//
        btn.setTitleColor(UIColor(white: 1.0, alpha: 1.0), forState: .Normal)

        btn.setContentHuggingPriority(1000, forAxis: .Horizontal)
        btn.setContentCompressionResistancePriority(1000, forAxis: .Horizontal)

        btn.addTarget(self, action: Selector("handleBtnPress:"), forControlEvents: .TouchUpInside)

        self.addSubview(btn)
    }

Answer 1

translatesAutoresizingMaskIntoConstraints是(boolean)属性UIView.在Objective-C中,您可以使用"点语法" 或 setter方法为属性赋值

btn.translatesAutoresizingMaskIntoConstraints = NO;
[btn setTranslatesAutoresizingMaskIntoConstraints:NO];

但是在Swift中你只需为属性分配一个新值:

btn.translatesAutoresizingMaskIntoConstraints = false