我有一个视图控制器(PopOverViewController)被另一个视图控制器(ListViewController)实例化。

在ListViewController中,以模式方式显示PopOverViewController:

popOverVC = self.storyboard?.instantiateViewController(withIdentifier: "sbPopUpID") as! PopUpViewController

popOverVC.modalPresentationStyle = .fullScreen


在PopOverViewController中,使用CGAfflineTransformation对PopOverViewController进行动画输入/输出:

    func showAnimate()
{
    self.shadowView.transform = CGAffineTransform(scaleX: 0.7, y: 0.7)
    self.view.alpha = 0.0;
    UIView.animate(withDuration: 0.3, animations: {
        self.view.alpha = 1.0
        self.shadowView.transform = CGAffineTransform(scaleX: 0.7, y: 0.7)
    });
}

func removeAnimate()
{
    UIView.animate(withDuration: 0.3, animations: {
        self.shadowView.transform = CGAffineTransform(scaleX: 1.0, y: 1.0)
        self.view.alpha = 0.0;
    }, completion:{(finished: Bool) in
        if (finished)
        {
            self.view.removeFromSuperview()
        }
    });
}


在PopOverViewController的viewDidLoad中,背景颜色被调低:

self.view.backgroundColor = UIColor(white: 0, alpha: 0.7)


我的问题:
呈现PopOver时,由于PopOver的alpha,背景仍然可见。我想在呈现PopOver时模糊此背景,并在关闭PopOver时使模糊消失。

我对如何做到这一点感到困惑。

谢谢!

迅捷3

最佳答案

private func makeEffectView() {
        let effect: UIBlurEffect = UIBlurEffect(style: UIBlurEffectStyle.light)
        effectView = UIVisualEffectView(effect: effect)
        effectView.frame = CGRect(x:0, y:0, width:UIScreen.main.bounds.size.width, height:UIScreen.main.bounds.size.height)
        self.window?.addSubview(effectView)
    }



private func removeEffectView() {
        if effectView != nil {
            self.effectView.removeFromSuperview()
        }
    }

关于ios - 以编程方式模糊弹出后的背景 View ,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/44425625/

10-10 19:45