I use two icons for different states tabBarItem.
My problem is that when tabbar is selected one icon to become a rectangle.
I did the other icons, and they appear well. I was looking for any information not found on this topic. How can I fix it?
My code
override func viewDidLoad() {
super.viewDidLoad()
let triviaMainTableViewController = StoryboardManager.triviaStoryboard.instantiateViewControllerWithIdentifier("TriviaMainTableViewController") as! TriviaMainTableViewController
viewControllers = [triviaMainTableViewController]
tabBarItem.image = UIImage(named: "TriviaTabBarDefault")?.imageWithRenderingMode(.AlwaysOriginal)
tabBarItem.selectedImage = UIImage(named: "TriviaTabBarSelected")
tabBarItem.titlePositionAdjustment = UIOffset(horizontal: 0, vertical: -3)
navigationBar.barTintColor = ColorManager.greenColor
}
You need to make sure you have put your icon on a transparent background in order for the selection highlight to work correctly. If the background color of the image isn't transparent it may look fine when it is not selected, but not when it is selected.
Related
I'm implementing a custom Tab bar for my iOS app. Im using the following code to display a background image:
class TabNavigationMenu: UIView {
// ...
// ...
UIGraphicsBeginImageContext(self.frame.size)
UIImage(named: "tabBarbg.png")?.draw(in: self.bounds)
let image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
if let image = image {
self.backgroundColor = UIColor(patternImage: image)
}
}
However, the tab bar is presented like this:
Also, when i make a view and present it anywhere else in the screen, it displays correctly. I'm using the same code there as well. Heres an example:
Any idea what the problem could be? I'm guessing the solution would also solve the faint blue line on top of the view...
You can try this to customize tab bar in ios
//Set the background color
UITabBar.appearance().backgroundColor = .red
tabBar.backgroundImage = UIImage(named: "tabBarbg.png")
//Set the item tint colors
tabBar.tintColor = .white
tabBar.unselectedItemTintColor = .lightGray
When attempting to place a UIImageView(UIImage) into a UIBarButtonItem on a UINavigationBar, the image gets placed in the middle of the bar and also has wide fields covering the entire bar. So, doesn't look like a small button on the left.
I've tried various tricks with frame resizing, contentMode settings.
The below code is from my View Controller, which is part of the Navigation Controller stack. Added this image into Assets:
http://pluspng.com/img-png/png-hd-bike-ktm-bike-png-500.png
for testing, named it bike.png and used it in UIImage below.
override func viewDidLoad() {
super.viewDidLoad()
let image = UIImage(named: "bike")
let imageView = UIImageView(image: image)
imageView.backgroundColor = .blue //for debugging
imageView.contentMode = .scaleAspectFit
navigationItem.leftBarButtonItem = UIBarButtonItem(customView: imageView)
}
The expected result would be to have the image of the motorbike in the left, rather than in the middle. Also, no empty fields to the left and to the right (highlighted in blue for debugging) of the image.
EXPECTED (drew up in Paintbrush):
REALITY:
Ended up resolving as:
imageView.widthAnchor.constraint(equalToConstant: (navigationController?.navigationBar.frame.height)!).isActive = true
I am trying to add a gradient background to my picker in the same way that I have added a gradient background to my VC.
When I do this via the code below, the gradient is added but the text disappears from view. Although the picker still behaves as if the text is there.
My guess is it's something to do with the .insertSublayer placing the gradient background over the top off the text.
override func viewDidLoad() {
let background = CAGradientLayer().bespokeColor()
background.frame = self.view.bounds
self.view.layer.insertSublayer(background, at: 0)
let pickerBackground = CAGradientLayer().bespokeColor()
pickerBackground.frame = self.Picker.bounds
self.Picker.layer.insertSublayer(pickerBackground, at: 0)
}
How do I get around this?
Fixed Background image in a TableView ?
Hey guys !
My first question as a Swift nOOb !
I'm trying to set up a fixed image as a background for my Table View. So far, the best option has been to include this in my ViewDidLoad :
let uluru = UIImage(named: "Uluru")
self.view.backgroundColor = UIColor(patternImage: uluru!)
Not so great, right?
Especially because when you're scrolling, the image is tiled. Meaning, it's repeating itself. Does anyone has a solution via the IB or directly into the code to make it fixed ? Something like in CSS ?
I also tried the superview way :
override func viewDidAppear(animated: Bool) {
let uluru = UIImage(named: "Uluru")
let uluruView = UIImageView(image: uluru)
self.view.superview!.insertSubview(uluruView, belowSubview:self.view)
}
But no success at all!
And last but not least :
override func viewDidLoad() {
super.viewDidLoad()
let backgroundImage = UIImageView(frame: UIScreen.mainScreen().bounds)
backgroundImage.image = UIImage(named: "Uluru")
self.view.insertSubview(backgroundImage, atIndex: 0)
}
Thank you all!
Do not use the backgroundColor property for this, and do not add any subviews. The table view is all ready for you to do what you want to do. Like this:
Create an image view (UIImageView) whose image is the desired image.
Make that image view the table view's background view (its backgroundView property).
With iOS 7, it's now pretty easy to add a blur to UINavigationBar, even with a BarTint, see http://blog.ashleynh.me/frosted-uinavigationbar/ and this example image:
However, there's a border at the bottom. How can I get rid of the border to look more like this?
UPDATE:
I took Danny and Shali's code, and here are the results. As you can see, the border doesn't show any more but there is no blur.
let navigationBarAppearance = UINavigationBar.appearance()
navigationBarAppearance.setBackgroundImage(UIImage(), forBarMetrics: UIBarMetrics.Default)
navigationBarAppearance.shadowImage = UIImage()
navigationBarAppearance.translucent = true
and here's the Inspector screenshot:
I also tried:
let navigationBarAppearance = UINavigationBar.appearance()
let clearImage = UIImage.imageWithColor(UIColor.clearColor())
navigationBarAppearance.setBackgroundImage(clearImage, forBarMetrics: UIBarMetrics.Default)
navigationBarAppearance.shadowImage = clearImage
navigationBarAppearance.translucent = true
Same result, but the Inspector is a little different:
Apple Documents: https://developer.apple.com/library/prerelease/ios/documentation/UIKit/Reference/UINavigationBar_Class/index.html#//apple_ref/occ/instp/UINavigationBar/shadowImage
The default value is nil, which corresponds to the default shadow
image. When non-nil, this property represents a custom shadow image to
show instead of the default. For a custom shadow image to be shown, a
custom background image must also be set with the
setBackgroundImage:forBarMetrics: method. If the default background
image is used, then the default shadow image will be used regardless
of the value of this property.
So basically you need to set background image before setting shadowImage to make it work.
Edit
Image generated from color (Swift) as background Navigation. Not sure if your blur function will still work when you change backgroundImage for Navigation bar. That would be a different problem.
class func imageWithColor(color: UIColor) -> UIImage {
let rect = CGRectMake(0, 0, 1, 1)
UIGraphicsBeginImageContextWithOptions(rect.size, false, 0)
color.setFill()
UIRectFill(rect)
var image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
return image
}
Have you tried navigationBar.shadowImage = [UIImage new]; ?