It's for a webview, I want the Navigation bar on top, But I want it very small. But no matter what value I put there is not working :(
For example, with this code I have the text in navigation bar red
let textAttributes = [NSAttributedString.Key.foregroundColor:UIColor.red]
navigationController?.navigationBar.titleTextAttributes = textAttributes
but trying to change the height let's say 8, 80 or even 800 don't work :(
navigationController!.navigationBar.frame = CGRect(x: 0, y: 0, width: self.view.frame.size.width, height: 80)
is there a better way ?
Actually after iOS 11 Apple does not allow us to customize the height of navigation bar. you can do that with custom navigation bar
// Before iOS 11
class MyNavigationBar: UINavigationBar {
override func sizeThatFits(_ size: CGSize) -> CGSize {
return CGSize(width: UIScreen.main.bounds.width, height: 80)
}
}
or creating a custom navigation controller
class MyNavigationController: UINavigationController {
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
navigationBar.frame = CGRect(x: 0, y: 0, width: view.frame.width, height: 80)
}
}
Community Bug Reports
Subviews of UINavigationBar don't obey view frame height
sizeThatFits not working
#iOS 11 Xcode 9 Navigation bar height not changes
BONUS
Check the gianfilippoci's answer to developer forum
Related
I have implemented this Popover Cocoapod by Corin8823,
My Popover code mirrors this code but have a situation to where the origin point of where of the pop over is coming from is my tab bar instead of the button itself.
I have my popover button within a PageViewController linked to a UIView.
I have recreated that set up (minus the Popover Cocoapod) here but you can also see a youtube video approximating that set up here.
I have tried changing the sender to other elements and simply removing it but the results are always the same (popover comes from tab bar). I assume the popover is coming from the parent aka the UIView? instead of the child? I have read in some posts (that I've been unable to relocate) that I should be using something other than sender.frame, but I don't know what to use instead. I also don't see any questions similar enough to this situation that aren't extremely outdated.
The exact Popover code within the button is:
#IBAction func button1Action(_ sender: UIButton) {
//Origin Point
let originPoint = CGPoint(x: sender.frame.midX, y: sender.frame.maxY + 158) //(Y = down)
let popoverView = UIView(frame: CGRect(x: 32, y: sender.bounds.maxY + 20, width: self.view.bounds.width - 64, height: 200))
let textLabel = UILabel(frame: CGRect(x: +15, y: 0, width: popoverView.bounds.width - 15, height: popoverView.bounds.height))
textLabel.lineBreakMode = .byWordWrapping
textLabel.numberOfLines = 0
textLabel.textColor = .white
textLabel.text = "Use neutral framing of the events rather than perceptually colored language. eg:\n\n____ event occured.\n____ person said: '____'.\n____ object was altered in ____ way."
textLabel.textAlignment = .left
popoverView.addSubview(textLabel)
let options: [PopoverOption] = [
.cornerRadius(25),
.color(.systemTeal)
]
let popover = Popover(options: options)
popover.show(popoverView, point: originPoint)
}
I have posted this on the github and it's been about 3 weeks with no response.
I'm writing an iOS app where the user can add text fields, then drag them around the screen to reposition them, layout-style, sort of like Keynote.
I'm currently appending the user-added UITextFields to an #IBOutlet Collection and defaulting to .borderStyle = .roundedRect to get a faint border around the selected text, indicating the field is selected. Any UITextField will be set to .roundedRect border style when textFieldDidBeginEditing is called, and switch to textField.borderStyle = .none when textFieldDidEndEditing is called.
All seems to work with one problem: when switching border style to .none, the text field loses indentation that was around the border, shifting text outward and putting it in a spot where the user hadn't intended (graphic adds a background color red, just to show the shift, but I'll eventually allow the user to set background colors, so just shifting the UITextField isn't an option).
I've also tried adapting the answer at:
Create space at the beginning of a UITextField
setting a no-padding inset for the TextView when it's a .roundedRect, but adding padding when .borderStyle is .none. This seems to have no effect.
Other answers have suggested setting
textField.layer.borderColor = UIColor.clear.cgColor
or
textField.layer.borderWidth = 0.0
but these don't seem to have any effect, either
I'm eventually going to allow the user to change fonts & sizes of each TextField, so I'd like any indentation to be consistent whether the UITextField is selected or nots elected, and regardless of font choices.
Code is below. Recommendations are most welcome, as well as setting me on a new approach, if I'm missing a better solution.
Thanks!
John
class ViewController: UIViewController, UITextFieldDelegate {
#IBOutlet weak var screenView: UIView! // a 320 x 240 view
#IBOutlet var fieldCollection: [UITextField]! // Not connected, fields created programmatically
// below are used in .inset(by:) but seems to have no effect
let padding = UIEdgeInsets(top: 0, left: 5, bottom: 0, right: 5)
let noPadding = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
override func viewDidLoad() {
super.viewDidLoad()
// hide keyboard if we tap outside of a field
let tap = UITapGestureRecognizer(target: self.view, action: #selector(UIView.endEditing(_:)))
tap.cancelsTouchesInView = false
self.view.addGestureRecognizer(tap)
createNewField()
}
// Select / deselect text fields
func textFieldDidBeginEditing(_ textField: UITextField) {
textField.borderStyle = .roundedRect
// textField.bounds.inset(by: noPadding) // effect is the same if left out
}
func textFieldDidEndEditing(_ textField: UITextField) {
textField.borderStyle = .none
// textField.bounds.inset(by: padding) // effect is the same if left out
}
// UITextField created & added to fieldCollection
func createNewField() {
let newFieldRect = CGRect(x: 0, y: 0, width: 320, height: 30)
let newField = UITextField(frame: newFieldRect)
newField.borderStyle = .roundedRect
newField.isUserInteractionEnabled = true
newField.addGestureRecognizer(addGestureToField())
screenView.addSubview(newField)
if fieldCollection == nil {
fieldCollection = [newField]
} else {
fieldCollection.append(newField)
}
newField.delegate = self
newField.becomeFirstResponder()
}
func addGestureToField() -> UIPanGestureRecognizer {
var panGesture = UIPanGestureRecognizer()
panGesture = UIPanGestureRecognizer(target: self, action: #selector(draggedView(_:)))
return panGesture
}
// event handler when a field(view) is dragged
#objc func draggedView(_ sender:UIPanGestureRecognizer){
sender.view!.becomeFirstResponder()
let selectedView = sender.view as! UITextField
selectedView.bringSubviewToFront(selectedView)
let translation = sender.translation(in: screenView)
selectedView.center = CGPoint(x: selectedView.center.x + translation.x, y: selectedView.center.y + translation.y)
sender.setTranslation(CGPoint.zero, in: screenView)
}
#IBAction func addFieldPressed(_ sender: UIButton) {
createNewField()
}
}
I was able to work around the problem by subclassing UITextField:
class PaddedTextField: UITextField {
let padding = UIEdgeInsets(top: 0, left: 8, bottom: 0, right: 8)
let noPadding = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
override open func textRect(forBounds bounds: CGRect) -> CGRect {
if self.borderStyle == .none {
let content = bounds.inset(by: padding)
return content
} else {
return bounds.inset(by: noPadding)
}
}
}
I then changed the newField object creation from using UITextField to:
let newField = PaddedTextField(frame: newFieldRect)
One more change. The height needed to be more appropriately calculated. Since all of my text fields can start out the full length of the enclosing superview (320 points), I modified the original newFieldRect, used .sizeToFit() to create a textbox with the appropriate height. The other dimensions won't be correct b/c I don't have anything in the text view, but I extract the .height and reuse this with my original initliazation parameters.
newField.sizeToFit()
let newFieldHeight = newField.frame.height
newFieldRect = CGRect(x: 0, y: 0, width: 320, height: newFieldHeight)
newField.frame = newFieldRect
Here's hoping it helps save someone time.
I'm developing image gallery like slider using UIPageViewController and I'm having troubles with UIPageViewController automatic insets in Scroll transition style mode.
Here is my layout:
UIViewController with UIContainerView (magenta background)
UIPageViewController linked to the container (from #1)
List of dynamically created view UIViewController(s) within the page controller (from #2), full width-height views (1. orange, 2. red, 3. green)
It used to work fine for a long time and continue to work with iOS 11 unless it's rendered on iPhone X device with safe area:
I've checked a lot of various options and was able to confirm that it's related specifically to the Scroll mode of the Page Controller. If I switch to PageCurl transition style - it works as expected (full height):
The Page Controller doesn't expose a lot of options to control this behavior for the scroll mode and I wasn't able to "hack" it as well by searching the controls tree and modifying various insets and frame and contentSize related properties. What I can clearly see is that once view controller is created, my scroll view contentSize and frame is 34px smaller then the container frame
> view.frame
{{X=0,Y=0,Width=375,Height=732}}
Bottom: 732
Height: 732
IsEmpty: false
Left: 0
Location: {{X=0, Y=0}}
Right: 375
Size: {{Width=375, Height=732}}
Top: 0
Width: 375
X: 0
Y: 0
> scroll.frame
{{X=-5,Y=0,Width=385,Height=698}}
Bottom: 698
Height: 698
IsEmpty: false
Left: -5
Location: {{X=-5, Y=0}}
Right: 380
Size: {{Width=385, Height=698}}
Top: 0
Width: 385
X: -5
Y: 0
> scroll.contentSize
{{Width=1155, Height=698}}
Height: 698
IsEmpty: false
Width: 1155
I've also set up my autolayout constraints to be linked to superview rather than safe area:
Here is my code for the Home Controller and all the rest is set in a storyboard (alert: C# Xamarin syntax)
private List<UIViewController> viewControllers;
public HomePageViewController (IntPtr handle) : base ( handle)
{
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
var child1 = new UIViewController();
child1.View.BackgroundColor = UIColor.Orange;
var child2 = new UIViewController();
child2.View.BackgroundColor = UIColor.Red;
var child3 = new UIViewController();
child3.View.BackgroundColor = UIColor.Green;
this.viewControllers = new List<UIViewController>
{
child1,
child2,
child3,
};
this.SetViewControllers(new UIViewController[] { child1 }, UIPageViewControllerNavigationDirection.Forward, false, null);
this.GetNextViewController = (c, r) =>
{
var current = this.viewControllers.IndexOf(this.ViewControllers[0]);
if (current >= this.viewControllers.Count - 1)
return null;
return this.viewControllers[current + 1];
};
this.GetPreviousViewController = (c, r) =>
{
var current = this.viewControllers.IndexOf(this.ViewControllers[0]);
if (current <= 0)
return null;
return this.viewControllers[current - 1];
};
}
How can I force my children view controllers to have full height (equals to the frame height of the parent container)?
I think you can solve this issue using code and custom layout. I mean create your UIPageViewController and insert its view to your UIViewController in code not on storyboard. I think you
should override UIViewController.viewDidLayoutSubviews() and set your rects "manually" (at least the one of the UIPageViewController.) Well, when you do it in code, sometimes you even don't need to override UIViewController.viewDidLayoutSubviews() because the template by Apple itself didn't do this. I think because any created view has translatesAutoresizingMaskIntoConstraints = true. So you can also follow this approach.
There is an example when you create a new project and state it is a page based app.
Here is the template if you want (WARNING: This is a part of a template by Apple itself)
var pageViewController: UIPageViewController?
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
// Configure the page view controller and add it as a child view controller.
self.pageViewController = UIPageViewController(transitionStyle: .scroll, navigationOrientation: .horizontal, options: nil)
self.pageViewController!.delegate = self
let startingViewController: DataViewController = self.modelController.viewControllerAtIndex(0, storyboard: self.storyboard!)!
let viewControllers = [startingViewController]
self.pageViewController!.setViewControllers(viewControllers, direction: .forward, animated: false, completion: {done in })
self.pageViewController!.dataSource = self.modelController
self.addChildViewController(self.pageViewController!)
self.view.addSubview(self.pageViewController!.view)
// Set the page view controller's bounds using an inset rect so that self's view is visible around the edges of the pages.
var pageViewRect = self.view.bounds
if UIDevice.current.userInterfaceIdiom == .pad {
pageViewRect = pageViewRect.insetBy(dx: 40.0, dy: 40.0)
}
self.pageViewController!.view.frame = pageViewRect
self.pageViewController!.didMove(toParentViewController: self)
}
You can extend this functionality by extending
I had a similar issue that only happened in the X sizes and after hours of trails and errors I got it fixed.
I am not sure if it's applicable for you or not but the way I have my page view controller VCs is that each VC has an image filling its background. I have 3 pages. Scrolling for the first time looked normal but when I would reverse scroll from page 2 to 1 or from 1 to 0, page 1's image would show around 40 pixels from the side when it should be completely hidden (similar to your screenshots).
So to fix it I had to either set the images to Aspect Fit or clips to bounds = true. I used the latter because it worked better for the UI.
I achieved to have my UIPageViewController display with full screen height with the following code :
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
guard let contentScrollView = view.subviews.first(where: { $0 is UIScrollView }) else { return }
contentScrollView.frame.size.height = view.frame.height
}
I am dynamically creating a scrollView and having a page control associated with it.I have an array of buttons and these buttons is being added to the scroll view dynamically.While the buttons thats are added in the first page are visible , some buttons are not visible , but they are being added to the Scroll View.
UIScrollView frame = CGRect(x: 0, y: 0, width: 340, height: 150)
scrollView.contentSize = CGSize(width: scrollView.frame.size.width * CGFloat(page), height: scrollView.frame.size.height)
In my case , I have 2 pages , so the content width is 680.
On scrolling the view , the content offset of the scroll view is 340 , although the the buttons that are invisible are within the contentSize , the buttons are still not visible ,
Following are the frames of the button that are not visible ,
<UIButton: 0x7ffdf0f26bb0; frame = (355 10; 62 32); opaque = NO; layer = <CALayer: 0x610000030840>>,
<UIButton: 0x7ffdf0f27110; frame = (427 10; 98 32); opaque = NO; layer = <CALayer: 0x610000030960>>,
<UIButton: 0x7ffdf0f27670; frame = (535 10; 112 32); opaque = NO; layer = <CALayer: 0x610000030a80>>
As far as page control is concerned , even if i remove the page control , I see the same behavior in the scrollview.
I am not sure if i have to check for anything specific on the scrollview.
#IBAction func changePage(sender: UIPageControl) -> () {
let x = CGFloat(pageControl.currentPage + 1) * scrollView.frame.size.width
scrollView.setContentOffset(CGPoint(x: x,y :scrollView.frame.size.height), animated: true)
}
func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
let pageNumber = round(scrollView.contentOffset.x / scrollView.frame.size.width)
pageControl.currentPage = Int(pageNumber)
}
The issues was not with the page control or scrollview , I was using an extension to round corners of the scrollView which was causing this issue ,
extension UIView {
func roundCorners(corners:UIRectCorner, radius: CGFloat) {
let path = UIBezierPath(roundedRect: self.bounds, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius))
let mask = CAShapeLayer()
mask.path = path.cgPath
self.layer.mask = mask
}}
I still don't understand why adding mask to the layer was messing the scrollView.
I have looked everywhere and tested all the code snippets posted on Stack, but nothing works for me as I need it to work.
I simply want to set:
Nav bar height
Nav bar bg color in RGB
Nav bar centered logo
I'm working with iOS8, Xcode 6 and Swift.
Many thanks for a clear answer!
This is my code in ViewController.swift
// Set nav bar height
navigationController?.navigationBar.frame.origin.y = -10
// Set nav bar bg color
var navBarColor = UIColor(red: 4 / 255, green: 47 / 255, blue: 66 / 255, alpha: 1)
navigationController?.navigationBar.barTintColor = navBarColor
// Set nav bar logo
let navBarImageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 30, height: 30))
navBarImageView.contentMode = .ScaleAspectFit
let navBarImage = UIImage(named: "navBarLogo.png")
navBarImageView.image = navBarImage
navigationItem.titleView = navBarImageView
After applying the code in the accepted answer, the height doesn't seem to change at all..
It's not an easy job...and I've surveyed several articles online (most of them in Objective-C).
The most useful one is this: http://www.emdentec.com/blog/2014/2/25/hacking-uinavigationbar
But its final solution does not put items in the middle, and it's not in Swift.
So I come up with a workable version in Swift. Hope it helps some people as I was saved so many precious time on SO.
Solution in Swift:
The following code will solve some issues you may have encountered:
The title & items are not placed in the middle of the navigation bar
The title & items would flick when the user navigates between view controllers
You need to subclass the UINavigationBar first, and in your storyboard, select the navigation bar element, and in the "Identity Inspector" tab, set the new class as the Custom Class
import UIKit
class UINavigationBarTaller: UINavigationBar {
///The height you want your navigation bar to be of
static let navigationBarHeight: CGFloat = 64
///The difference between new height and default height
static let heightIncrease:CGFloat = navigationBarHeight - 44
override init(frame: CGRect) {
super.init(frame: frame)
initialize()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
initialize()
}
private func initialize() {
let shift = UINavigationBarTaller.heightIncrease/2
///Transform all view to shift upward for [shift] point
self.transform =
CGAffineTransformMakeTranslation(0, -shift)
}
override func layoutSubviews() {
super.layoutSubviews()
let shift = UINavigationBarTaller.heightIncrease/2
///Move the background down for [shift] point
let classNamesToReposition: [String] = ["_UINavigationBarBackground"]
for view: UIView in self.subviews {
if classNamesToReposition.contains(NSStringFromClass(view.dynamicType)) {
let bounds: CGRect = self.bounds
var frame: CGRect = view.frame
frame.origin.y = bounds.origin.y + shift - 20.0
frame.size.height = bounds.size.height + 20.0
view.frame = frame
}
}
}
override func sizeThatFits(size: CGSize) -> CGSize {
let amendedSize:CGSize = super.sizeThatFits(size)
let newSize:CGSize = CGSizeMake(amendedSize.width, UINavigationBarTaller.navigationBarHeight);
return newSize;
}
}
Also on my gist: https://gist.github.com/pai911/8fa123d4068b61ad0ff7
iOS 10 Update:
Unfortunately, this code breaks in iOS 10, there is someone who helps fix it, here you go:
iOS 10 custom navigation bar height
And to be clear, this code is kind of hacky since it depends on the navigation bar's internal structure...so if you decide to use it anyway, be prepared for any upcoming changes that may break this code...
Nav bar height:
In a custom navigation controller subclass...
The trick with this one is to NOT change the actual height of the navigation bar and instead adjust its origin.
func viewDidLoad() {
super.viewDidLoad()
navigationBar.frame.origin.y = -10
}
Nav bar bg color in RGB:
In a custom navigation controller subclass...
func viewDidLoad() {
super.viewDidLoad()
navigationBar.barTintColor = // YOUR COLOR
}
or use the appearance proxy
UINavigationBar.appearance().barTintColor = // YOUR COLOR
Nav bar centered logo
In a custom view controller...
func viewDidLoad() {
super.viewDidLoad()
navigationItem.titleView = UIImageView(image: // YOUR LOGO)
}
Great answer from Bon Bon!
In Swift 3 however make sure you replace
let classNamesToReposition: [String] = ["_UINavigationBarBackground"]
with
let classNamesToReposition: [ String ] = [ "_UIBarBackground" ]
Otherwise, it wont work.