I am unable to show the left view in the UITextField. I know this is very easy thing and has been asked many times. I have found solutions to make a custom view and to show it as a left view.
I am trying to make a UILabel that shows the country code in the text field. I made the following function but it shows the empty space only.
func setCountryCode(textField: UITextField){
let viewPadding = UILabel(frame: CGRect(x: Int(textField.frame.origin.x), y: Int(textField.frame.origin.y), width: width , height: Int(textField.frame.size.height)))
viewPadding.textColor = CommonUtils.hexStringToUIColor(hex: AppColor.colorTextSecondary)
viewPadding.text = mCallingCode
viewPadding.font = viewPadding.font.withSize(12)
viewPadding.textAlignment = .center
textField.leftView = viewPadding
textField.leftViewMode = .whileEditing
}
Related
I have one Billing Address page in the app. I have to remember all text field data adds by the user and show them in a drop down list.
I have to create a table view on the bottom of the text fields. I am also using IQKeyboardManager for maintaining text fields when the keyboard appears.
So, when the keyboard appears, the table view is overlapping on the back of keyboard. How to resolve this issue?
I am also attaching the screenshot:
As i doing some search i found keyboardDistanceFromTextField property of IQKeyboardmanager class. You can set disctance of keyboard for the specific textField object using following code:
YourDropDowntextFiled.keyboardDistanceFromTextField = 250;
So make use of this line of code for your textfiled and you can easily show the drop-down list visible.
I have checked in Demo look like following. One i did not add keyboardDistanceFromTextField so it just appear after keyboard and other i apply propery so it will show big distance from the keyboard.
Look This. You can use RxSwift for compact coding
var autoCompleteTableView: UITableView = UITableView()
let containerView: UIView = UIView()
var placesArray = Observable.just([String]())
func createAutocompleteContainer() {
let screenSize: CGRect = UIScreen.mainScreen().bounds
let width : CGFloat = screenSize.width-138
let height : CGFloat = 200
containerView.frame = CGRect(x: 130, y: 62, width: width, height: height)
autoCompleteTableView.frame = CGRect(x: 0, y: 0, width: containerView.frame.size.width, height: containerView.frame.size.height)
containerView.backgroundColor = UIColor.whiteColor()
placesArray
.bindTo(autoCompleteTableView.rx_itemsWithCellIdentifier("cell", cellType: UITableViewCell.self)) { (row, element, cell) in
cell.textLabel?.text = "\(element)"
cell.textLabel?.textColor = UIColor(hex: "#b2b2b2")
cell.textLabel?.font = UIFont.systemFontOfSize(13)
}
.addDisposableTo(disposeBag)
autoCompleteTableView
.rx_modelSelected(String)
.subscribeNext { value in
self.textField = value
self.containerView.removeFromSuperview()
}
.addDisposableTo(disposeBag)
self.containerView.addSubview(autoCompleteTableView)
self.view.addSubview(containerView)
}
I am using Swift 3. I have two txtFields, one of them for email, the other one for password. I use the following code to give the email field a padding:
txtEmail.leftView = paddingView;
txtEmail.leftViewMode = .always
However, the app seems to run into an infinity loop when I apply the same to the password field:
txtPassword.leftView = paddingView;
txtPassword.leftViewMode = .always
What am I missing?
This UITextField extension will ease your implementation later on and should solve any problems related to using the same UIView on multiple textfields:
extension UITextField {
func pad(_ amount: Int) {
self.leftView = UIView(frame: CGRect(x: 0, y: 0, width: amount, height: self.frame.height))
self.leftViewMode = UITextFieldViewMode.always
}
}
Then you can use it like this in viewDidLoad or anywhere lower in the view controller's call hierarchy
txtEmail.pad(15)
txtPassword.pad(15)
As your code display you are using same view object for both textfield at the same time and may be that's why your app is looping. you can not add same view object as a subview for two diffrent textfield at the same time. so create new view instance and set it as a padding for individual textfiled.
let paddingForEmail = UIView(frame: CGRectMake(0, 0, 15,txtEmail.frame.size.height))
//Adding the padding to the Email textField
txtEmail.leftView = paddingForFirst
txtEmail.leftViewMode = UITextFieldViewMode .Always
//Create new padding object of view for second textField
let paddingForPassword = UIView(frame: CGRectMake(0, 0, 15,txtPassword.frame.size.height))
//Add padding to the Password textField
txtPassword.leftView = paddingForPassword
txtPassword.leftViewMode = UITextFieldViewMode .Always
hope this will help you.
I want to create a circle which contains text in its center which is aligned horizontally in its View Controller. Something similar like this:
I'm not sure how to go about doing this. I would expect to create a custom UIView which contains a subview of a rounded CGRect and also a subview of a TextView although I'm not sure this is the more efficient way forward. Would this way forward be considered best practice and how would I implement it in Swift? Thanks.
You can achieve this with a simple UILabel!
let diameter = 50
var label = UILabel(frame: CGRect(x: 0, y: 0, width: diameter, height:diameter))
label.text = "Hello World"
label.textAlignment = .Center
label.backgroundColor = UIColor.redColor()
// The magic to create a circle
label.layer.cornerRadius = diameter / 2.0
label.clipsToBounds = true
Problem visually:
I have tried putting the image in the center of its own frame with no luck. I have also tried to center it with playing the x of the CGRect with no luck either. I presume I can just put an empty icon with the same background as the navigation bar; however, I don't want to do it that way. I might have 2-3 icons on the right; then what?
let image = UIImage(named: "some_logo")!
let imageSize = CGSizeMake(60, 42)
let marginX: CGFloat = (self.navigationController!.navigationBar.frame.size.width / 2) - (imageSize.width / 2)
let imageView = UIImageView(frame: CGRect(x: marginX, y: 0, width: imageSize.width, height: imageSize.height))
imageView.image = image
imageView.contentMode = .ScaleAspectFit
self.navigationItem.titleView = imageView
I prefer swift but obj-c solutions are welcomed as well.
Any pointers appreciated.
This app has nothing to do with KIA, it is just some logo I got off the google search, searching "some logo".
I have faced the same issue. Then i tried one code shown below.
override func viewDidAppear(animated: Bool) {
let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 150, height: 40))
imageView.contentMode = .ScaleAspectFit
let image = UIImage(named: "googlePlus")
imageView.image = image
navigationItem.titleView = imageView
}
This Code working fine when i tested with Left & Right Bar Button.
But in my previous code there is no Right Bar Button.
So the image is moving towards right.
For solving this i created a Right Bar Button & change the Tint color to clear color.
So everything seems to be working fine. This is one Temporary Solution for your problem.
The easiest way of doing this is in Interface Builder.
Simply drag a 'NavigationItem' from the object library and place it into your ViewController, then place a UIView where the title goes (ensure you set the background to 'clear')
Then place a UIImageView into that view and set the image in the Attributes Inspector to your required image. Scale your UIImage accordingly and set your your constraints accordingly.
I created an extension for solving this problem using the hint of #idrougge.
In order to center the title view image no matter what buttons you have, a content view is set as title view, then the image view is added as child of the content view. Finally, using constraints the image view is aligned inside its parent (content view).
import UIKit
extension UIViewController {
func addLogoToNavigationBarItem() {
let imageView = UIImageView()
imageView.translatesAutoresizingMaskIntoConstraints = false
imageView.heightAnchor.constraint(equalToConstant: <your_height>).isActive = true
imageView.contentMode = .scaleAspectFit
imageView.image = <your_image>
//imageView.backgroundColor = .lightGray
// In order to center the title view image no matter what buttons there are, do not set the
// image view as title view, because it doesn't work. If there is only one button, the image
// will not be aligned. Instead, a content view is set as title view, then the image view is
// added as child of the content view. Finally, using constraints the image view is aligned
// inside its parent.
let contentView = UIView()
self.navigationItem.titleView = contentView
self.navigationItem.titleView?.addSubview(imageView)
imageView.centerXAnchor.constraint(equalTo: contentView.centerXAnchor).isActive = true
imageView.centerYAnchor.constraint(equalTo: contentView.centerYAnchor).isActive = true
}
}
I hope this helps someone,
Xavi
As question heading stated "Swift / Obj-C" so I am sharing code of Obj-C :
UIImageView *titleImage = (UIImageView *)self.navigationItem.titleView;
titleImage = [[UIImageView alloc]initWithFrame:CGRectMake((self.navigationController.navigationBar.frame.size.width/2) - (100/2), 0, 100,self.navigationController.navigationBar.frame.size.height)];
//setting the image for UIImageView
titleImage.image = [UIImage imageNamed:#"someLogo"];
titleImage.contentMode = UIViewContentModeCenter;
self.navigationItem.titleView = titleImage;
Had same issue on phones with smaller sizes. Image in title was moving to right. Causing this issue back button -> [back_button][title_view]. Its centered when there is no back button or there is right bar button. Richard Hope's was right, you just need to put UIView first, and then put UIImageView as subview. Programmatically could be done like this.
private var imageView: UIView {
let bannerWidth = navigationBar.frame.size.width * 0.5 // 0.5 its multiplier to get correct image width
let bannerHeight = navigationBar.frame.size.height
let view = UIView()
view.backgroundColor = .clear
view.frame = CGRect(x: 0, y: 0, width: bannerWidth, height: bannerHeight)
let image = UIImage(named: "your_image_name")
let imageView = UIImageView(image: image)
imageView.contentMode = .scaleAspectFit
imageView.frame = CGRect(x: 0, y: 0, width: view.frame.width, height: view.frame.height)
view.addSubview(imageView)
return view
}
The just change titleView
navigationItem.titleView = imageView
What about setting the center of your image equals to the navigationBar.center instead of setting a margin?
//assuming we already have our navigationController
let myNicelLogoWidth = 100
let myNiceLogoHeight = 50
//start positioning your logo at 0.0, 0.0
let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: myNicelLogoWidth, height: myNiceLogoHeight))
imageView.contentMode = .scaleAspectFit
imageView.center = navigationBar.center //the put your image at the center
let image = UIImage(named: "myNiceLogoImage")
imageView.image = image
navigationItem.titleView = imageView
I once face with this problem, and finally i found out that the problem is the previous navigation bar title still located next to burger button, but it's invisible.
Fast solution but not sure if it's the best is to change the previous navigation bar title to empty string before show the next view controller.
Hope it's help.
Video of the issue!
Example of what I mean by Twitter-like UIScrollView:
I basically have it working, but I have this small glaring issue and I don't know where it is coming from. I have checked all the constraints and values for my two view controllers, but something is off.
In short,
The code that creates the NavBar and then populates it with the two ViewControllers side by side:
override func viewDidLoad() {
super.viewDidLoad()
var navBar: UINavigationBar = UINavigationBar(frame: CGRectMake(0, 0, self.view.bounds.width, 64))
navBar.barTintColor = UIColor.blackColor()
navBar.translucent = false
//Creating some shorthand for these values
var wBounds = self.view.bounds.width
var hBounds = self.view.bounds.height
// This houses all of the UIViews / content
scrollView = UIScrollView()
scrollView.backgroundColor = UIColor.clearColor()
scrollView.frame = self.view.frame
scrollView.pagingEnabled = true
scrollView.showsHorizontalScrollIndicator = false
scrollView.delegate = self
scrollView.bounces = false
self.view.addSubview(scrollView)
self.scrollView.contentSize = CGSize(width: self.view.bounds.size.width * 2, height: hBounds)
//Putting a subview in the navigationbar to hold the titles and page dots
navbarView = UIView()
//Paging control is added to a subview in the uinavigationcontroller
pageControl = UIPageControl()
pageControl.frame = CGRect(x: 0, y: 35, width: 0, height: 0)
pageControl.pageIndicatorTintColor = UIColor(red: 1.0, green: 1.0, blue: 1.0, alpha: 0.3)
pageControl.currentPageIndicatorTintColor = UIColor.whiteColor()
pageControl.numberOfPages = 2
pageControl.currentPage = 0
self.navbarView.addSubview(pageControl)
//Titles for the nav controller (also added to a subview in the uinavigationcontroller)
//Setting size for the titles. FYI changing width will break the paging fades/movement
navTitleLabel1 = UILabel()
navTitleLabel1.frame = CGRect(x: 0, y: 8, width: wBounds, height: 20)
navTitleLabel1.textColor = UIColor.whiteColor()
navTitleLabel1.textAlignment = NSTextAlignment.Center
navTitleLabel1.text = "Title 1"
self.navbarView.addSubview(navTitleLabel1)
navTitleLabel2 = UILabel()
navTitleLabel2.alpha = 0.0
navTitleLabel2.frame = CGRect(x: 100, y: 8, width: wBounds, height: 20)
navTitleLabel2.textColor = UIColor.whiteColor()
navTitleLabel2.textAlignment = NSTextAlignment.Center
navTitleLabel2.text = "Title 2"
self.navbarView.addSubview(navTitleLabel2)
//Views for the scrolling view
//This is where the content of your views goes (or you can subclass these and add them to ScrollView)
feedViewController = storyboard?.instantiateViewControllerWithIdentifier("FeedController") as FeedViewController
view1 = feedViewController.view
addChildViewController(feedViewController)
feedViewController.didMoveToParentViewController(self)
view1.frame = CGRectMake(0, 0, wBounds, hBounds)
self.scrollView.addSubview(view1)
self.scrollView.bringSubviewToFront(view1)
//Notice the x position increases per number of views
secondViewController = storyboard?.instantiateViewControllerWithIdentifier("SecondController") as SecondViewController
view2 = secondViewController.view
addChildViewController(secondViewController)
secondViewController.didMoveToParentViewController(self)
view2.frame = CGRectMake(wBounds, 0, wBounds, hBounds)
self.scrollView.addSubview(view2)
self.scrollView.bringSubviewToFront(view2)
navBar.addSubview(navbarView)
self.view.addSubview(navBar)
}
I've looked at my storyboard and both ViewControllers seem identical in regards to their constraints.
I know this is an issue because both ViewControllers are populated by UITableViews. When I scroll through the SecondViewController, it works perfectly. When I scroll through the FeedViewController, there is a small white space at the top that I can't seem to get rid of and it shows that the text cuts off there. I've been stuck on this for a long time and if there is any other information needed, I'll gladly provide it.
Edit: Included video of the issue. If I could, I would bounty this question right now. I don't understand the cause
Update: After swapping both ViewController positions, I have noticed that the problem does not lie with either ViewController. The problem lies with page 1 being set lower. When swapped, the original SecondViewController also experienced the same behavior
So, I think everyone who implements this runs into this issue at some point. The issue isn't with the first ViewController. Simply adjust the constraint to be 44 from the top. The issue is with the second ViewController and it isn't so much an issue when you understand how they work. Technically, it is off to the side and hence its top constraint does not adhere to the Navigation Bar, so what you have is a constraint - 20. Which, depending on how you originally placed your constraints, can give you this seeming issue.
But basically, anyone and everyone will run into this issue when implementing this.
TL;DR: To make everything seamless, your second, third, fourth, fifth, etc. page View Controllers need a constraint + 20 of your first View Controller. With my set-up, I use a constraint of 44 for my first View Controller and hence 64 for the second