0
我已經創建了一個自定義的導航欄。現在我將其添加到viewwillappear
method.Due,因爲當我返回到我的視圖控制器它需要時間加載。在viewwillappear中添加自定義導航欄會導致導航速度變慢?
func addViewToNav()
{
myView = UIView(frame: CGRect(x: 0, y: 20, width: (self.navigationController?.navigationBar.frame.size.width)!-40, height: (self.navigationController?.navigationBar.frame.size.height)!))
imageView.frame = CGRect(x: 5, y: (myView?.frame.size.height)!/2-14, width: 28, height: 28)
let image = UIImage(named: "download")
imageView.contentMode=UIViewContentMode.scaleAspectFill
imageView.image=image
imageView.layer.borderColor = UIColor.white.cgColor
imageView.layer.cornerRadius = imageView.frame.size.width/2
imageView.clipsToBounds = true
imageView.backgroundColor=UIColor.yellow
label = UILabel(frame: CGRect(x: imageView.frame.size.width+15, y: 0, width: 150, height: (myView?.frame.size.height)!))
label?.text="Label"
label?.textColor=UIColor.white
myView?.addSubview(imageView)
myView?.addSubview(label!)
self.navigationController?.view.addSubview(myView!)
//add tap gesturte on imageview & label
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.tapBlurButton(_:)))
myView?.isUserInteractionEnabled=true
tapGesture.numberOfTapsRequired=1
myView?.addGestureRecognizer(tapGesture)
}
請指導我如何使它快速,因爲這是非常緩慢的。
查看圖片大小可能過大 –