I use:
self.navigationController?.navigationBar.shadowImage = UIImage()
to remove the border of a navigationBar earlier in my app but now I'm not sure to add the border back on a later screen.
To reset the navigationBar's shadowImage to the default shadowImage do the following:
self.navigationController?.navigationBar.shadowImage = UINavigationBar().shadowImage
Related
I tried virtually every solution I could find for changing the background color of a UISearchController SearchBar, but none of them produced the correct color as the background. Every solution produces a somewhat darker color, and as demonstrated in the image below, white seems more pale / off-white.
How can I make the search bar a true white color?
One of the more recent "solutions" that results in white being pale is below:
let searchController = UISearchController()
override func viewDidLoad() {
super.viewDidLoad()
navigationItem.searchController = searchController
let textFieldInsideSearchBar = searchController.searchBar.value(forKey: "searchField") as? UITextField
textFieldInsideSearchBar?.backgroundColor = UIColor.white
}
The default border style is being impacted by the navigationItem. If you remove the border style and manually set the corner radius, it should display as white. White seems to be the only color I ran into being affected by this.
Change:
textFieldInsideSearchBar?.backgroundColor = UIColor.white
To:
textFieldInsideSearchBar?.borderStyle = .none
textFieldInsideSearchBar?.cornerRadius = 10
textFieldInsideSearchBar?.backgroundColor = .white
When I put the search bar in a table header, your code above (without altering the border/radius) worked without issue, but when I tried to embed it into a navigation bar item, I ran into your problem.
I have the table view with headers. Headers have only custom text and white background. Headers are pinned on top when scrolling and I want to know, is there any way how to make the background of headers translucent same as navigation bar is? With some blur effect?
Thanks for any advice!
Change the backgroundColor to .clear, add a UIVisualEffectView below the label and set the constraints to the edges. Not sure if it will mimic the behaviour of navbar by default so you would have to play around a little with the UIBlurEffect options to get the desired effect.
let blurEffectStyle = UIBlurEffectStyle.extraLight
let blurEffect = UIBlurEffect(style: blurEffectStyle)
let visualEffectView = UIVisualEffectView(effect: blurEffect)
Then add to view and set the constraints
self.navigationController?.navigationBar.isTranslucent = true
self.navigationController?.navigationBar.shadowImage = UIImage()
self.navigationController?.view.backgroundColor = UIColor.clear
self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
self.navigationController?.navigationBar.backgroundColor = UIColor.clear
I've to make my navigation bar transparent, I tried with this code :
self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: UIBarMetrics.default)
self.navigationController?.navigationBar.shadowImage = UIImage()
self.navigationController?.navigationBar.isTranslucent = true
self.navigationController?.view.backgroundColor = UIColor.clear
But my navigation bar become white, I don't understand the reason!
Can someone help to solve this problem?
You are doing right way to make transparent UINavigationBar but seem like you have a wrong constraint. Make sure you top constraint of your scrollView is equal to Superview.Top.
If your top constraint of your scrollView is equal to Safe Area.Top, of course your ScrollView won't scroll below UINavigationBar.
Im having a difficult time trying to change the navigationBar.barTintColor to white. Strangely, all other colors work, but not white!
self.navigationController!.navigationBar.barTintColor = UIColor.whiteColor()
Above line doesnt work just for white.
Even tried with a background image. Still the same. Any other color works but not white!! White is always replaced by light grey...
Please advice where I am going wrong...
Thanks.
Try this Code:
In your viewDidLoad:
title = "Some Title"
UIApplication.shared.statusBarStyle = .default
navigationController?.navigationBar.setBackgroundImage(UIImage(), for: UIBarMetrics.default)
navigationController?.navigationBar.shadowImage = UIImage()
navigationController?.navigationBar.isTranslucent = true
//Line under NavigationBar
let barView = UIView(frame: CGRect(x:0, y:(UINavigationController().navigationBar.frame.height + UIApplication.shared.statusBarFrame.height), width:view.frame.width, height:0.6))
barView.backgroundColor=UIColor.red // set any colour you want..
navigationController?.navigationBar.addSubview(barView)
//Title Colour
navigationController?.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName:UIColor.red]
Note:
Above code works on any background colour....
If you want the navigationBar to be green....set your view background colour to green...
I have a UITabBar and I want to make it blurred. I wrote the following code:
import UIKit
class TabBarController:UITabBarController {
override func viewDidLoad() {
super.viewDidLoad()
let blur = UIBlurEffect(style: UIBlurEffectStyle.Light)
let blurView = UIVisualEffectView(effect: blur)
blurView.frame = self.view.bounds
blurView.autoresizingMask = [.FlexibleWidth, .FlexibleHeight]
self.view.layer.insertSublayer(blurView, atIndex: 0)
}
}
but somehow the last line throws error:
Cannot convert value of type 'UIVisualEffectView' to expected argument
type 'CALayer'
how can I fix that?
I changed the last line to:
self.tabBar.addSubview(blurView)
but now the whole tabbar is blurred (even with icons and they are not visible). When I changed this line to:
self.tabBar.sendSubviewToBack(blurView)
then the tabbar is visible, but not blurred. I want to achieve effect from accepted answer from here Black background on transparent UITabBar but here it is uitabbar and I'm using uitabbarcontroller... Can you help me with applying blur in my case?
You just add the blur view as a subview:
self.view.addSubview(blurView)
Since you just want to blue the tab bar and this class is a tab bar controller, you can do:
self.tabBar.addSubview(blueView)
You also need to change the frame:
blurView.frame = self.tabBar.bounds
why don't you just use the barTintColor property on your TabBarController?
self.tabBar.translucent = true
self.tabBar.barTintColor = UIColor.blackColor()
You don't even need to subclass UITabBarController. You can call this on any UIViewController.
self.tabBarController?.tabBar.translucent = true
self.tabBarController?.tabBar.barTintColor = UIColor.blackColor()
If I understood correctly from the following comment that you posted, you want to change the UITabBar to be black in colour but still blurred.
And yes, I noticed that the UITabBarController is blurred by default, but I would like to make it blurred with specific style (.Dark).
Doing this since iOS 7 has actually become quite easy. Simply change the barStyle of your UITabBar to .black. Put the following code in your UIViewController's viewDidLoad method (note that UITabBar is translucent by default, so you don't need to specify that again).
tabBarController?.tabBar.barStyle = .black
If you want to set it back to the regular, white barStyle, change it back to .default.
tabBarController?.tabBar.barStyle = .default
You may even do this from within Interface Builder by selecting the Tab Bar in your UITabBarController's hierarchy and changing its Style to Black.
I have a solution, all you need is configure your UITabBar as following:
// next code will make tabBar fully transparent
tabBar.isTranslucent = true
tabBar.backgroundImage = UIImage()
tabBar.shadowImage = UIImage() // add this if you want remove tabBar separator
tabBar.barTintColor = .clear
tabBar.backgroundColor = .black // here is your tabBar color
tabBar.layer.backgroundColor = UIColor.clear.cgColor
If you want to add blur, do this:
let blurEffect = UIBlurEffect(style: .dark) // here you can change blur style
let blurView = UIVisualEffectView(effect: blurEffect)
blurView.frame = tabBar.bounds
blurView.autoresizingMask = .flexibleWidth
tabBar.insertSubview(blurView, at: 0)
As a result:
Attach bottom constraint to the bottom of the view instead of Safe Area
It just might not be a problem with your TabBar but with tableView constraints.
Tab bar is blurred by default.