在TabBarController中制作BlurView效果

Question

我在TabBarController中有一个ViewController，我想在该ViewController中添加一个BlurView，这也会影响TabBarController，如何做到这一点。

如果我使用以下代码：

func presentBlurView() {
        blurEffect = UIBlurEffect(style: blurEffectStyle)
        blurView1 = UIView()
        blurView1!.frame = self.view.frame
        blurView1!.backgroundColor = UIColor(red: 0.0, green: 0.0, blue: 0.0, alpha: 0.5)
        self.view.addSubview(blurView1!)

        blurView1!.translatesAutoresizingMaskIntoConstraints = false
        NSLayoutConstraint.activateConstraints([
            blurView1!.leftAnchor.constraintEqualToAnchor(self.view.leftAnchor, constant: 0),
            blurView1!.topAnchor.constraintEqualToAnchor(self.view.topAnchor, constant: 0),
            blurView1!.rightAnchor.constraintEqualToAnchor(self.view.rightAnchor,constant:0),
            blurView1!.bottomAnchor.constraintEqualToAnchor(self.view.bottomAnchor,constant:0)
            ])
        let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: "dismissProjectDetailViewRightSight:")
        tapGestureRecognizer.cancelsTouchesInView = false
        blurView1!.addGestureRecognizer(tapGestureRecognizer)
    }

它只是在ViewController的整个视图中显示，对TabBarController没有影响。但如果我像这样改变：

UIApplication.sharedApplication().keyWindow?.addSubview(blurView1!)

它适用于TabBarController，但在这种情况下，很难处理某些事情。有什么办法可以解决这个问题吗？任何帮助都将不胜感激。

Answer 1

您可以尝试这样做：

self.tabBarController?.view.addSubview(blurView1!)