如何设置透明导航栏？iOS 11 快速 4 Xcode 9
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How to set a transparent navigation bar? iOS 11 swift 4 Xcode 9
提问by Aphro Disiac
On the picture on the right is what I need and on the left is what I get:
右边的图片是我需要的，左边是我得到的：
I'm trying to make a transparent navigation bar, and in the book which I'm reading it's written that all you need to do is to insert this code in viewDidLoad() method of the preferable View Controller:
我正在尝试制作一个透明的导航栏，在我正在阅读的书中写道，您需要做的就是将此代码插入到首选视图控制器的 viewDidLoad() 方法中：
navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
navigationController?.navigationBar.shadowImage = UIImage()
navigationController?.navigationBar.tintColor = .white
tableView.contentInsetAdjustmentBehavior = .never
But all I get is a white navigation bar. Also if's written that the difference of bars on the picture is in this code:
但我得到的只是一个白色的导航栏。另外，如果写的是图片上的条形差异在此代码中：
tableView.contentInsetAdjustmentBehavior = .never
But it doesn't work for me
但这对我不起作用
I downloaded the final project of this book's chapter and everything works fine there, though I've tried to copy-paste the code and still got nothing changed
我下载了本书章节的最终项目，那里一切正常，尽管我尝试复制粘贴代码，但仍然没有任何改变
And the thing is - I've already tried to insert this code:
问题是 - 我已经尝试插入此代码：
navigationController?.navigationBar.isTranslucent = true
But it doesn't work
但它不起作用
If it matters, the book is "Beginning iOS 11 programming" by AppCoda
如果重要的话，这本书是 AppCoda 的“开始 iOS 11 编程”
回答by Abhishek Mitra
Use following code:
使用以下代码：
navigationController?.navigationBar.isTranslucent = true
Hope it will help you.
希望它会帮助你。
Edit (UPDATE)
编辑（更新）
Use Below Code:
使用以下代码：
navigationController?.navigationBar.setBackgroundImage(UIImage(), for: UIBarMetrics.default)
navigationController?.navigationBar.shadowImage = UIImage()
navigationController?.navigationBar.isTranslucent = false
UPDATE 2
更新 2
override func viewDidAppear(_ animated: Bool) {
navigationController?.navigationBar.setBackgroundImage(UIImage(), for: UIBarMetrics.default)
navigationController?.navigationBar.shadowImage = UIImage()
navigationController?.navigationBar.isTranslucent = true
navigationController?.navigationBar.tintColor = .red
}
It have to be work.
它必须是工作。
回答by Khawar Islam
Check this code
检查此代码
override func viewWillAppear(_ animated: Bool) {
self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
self.navigationController?.navigationBar.shadowImage = UIImage()
self.navigationController?.navigationBar.isTranslucent = true
}
override func viewWillDisappear(_ animated: Bool) {
self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
self.navigationController?.navigationBar.shadowImage = UIImage()
self.navigationController?.navigationBar.isTranslucent = false
}
