My switch is inside of a nib which is inside of a tableview header. When I click the switch it only does the pushSwitch.isOn and not !pushSwitch.isOn. It only gives me the values inside of the pushSwitch and doesn't seem to go inside of !pushSwitch.isOn
Thanks
protocol PhoneNotificationHeaderViewDelegate: class {
func copyPreferredSettingsRequested()
func textNotificationSwitchTapped()
func pushNotificationSwitchTapped()
}
class PhoneNotificationHeaderView: UITableViewHeaderFooterView {
#IBOutlet weak var titleLabel: UILabel!
#IBOutlet weak var textSwitch: UISwitch!
#IBOutlet weak var pushSwitch: UISwitch!
#IBOutlet weak var copyPreferredSettingsButton: UIButton!
#IBOutlet weak var notificationView: UIView!
weak var delegate: PhoneNotificationHeaderViewDelegate?
UIApplication.shared.keyWindow?.rootViewController?.present(alertController, animated: true, completion: nil)
}
#IBAction func textNotificationSwitchTapped(_ sender: AnyObject) {
self.delegate?.textNotificationSwitchTapped()
}
#IBAction func pushNotificationSwitchTapped(_ sender: UISwitch) {
self.delegate?.pushNotificationSwitchTapped()
}
#IBAction func copyPreferredSettingsButtonTapped() {
self.delegate?.copyPreferredSettingsRequested()
}
override var backgroundColor: UIColor? {
didSet {
print("backgroundColor")
}
}
Here is my switch inside my VC:
extension PhoneNotificationViewController: PhoneNotificationHeaderViewDelegate {
func pushNotificationSwitchTapped() {
guard let phoneNotificationHeader = Bundle(for: type(of: self)).loadNibNamed("PhoneNotificationHeaderView", owner: self, options: nil)?.first as? PhoneNotificationHeaderView else {
return
}
if phoneNotificationHeader.pushSwitch.isOn{
//Disable Firebase from sending
Globals.sharedInstance.pushStatus = true
phoneNotificationHeader.pushSwitch.setOn(false, animated: true)
}else{
Globals.sharedInstance.pushStatus = false
phoneNotificationHeader.pushSwitch.setOn(true, animated: true)
}
self.refreshUI()
}
There is no such thing as a "a nib which is inside of a tableview header". Every time you load a nib by saying loadNibNamed, you get a fresh copy of the view that it contains. So every time you call pushNotificationSwitchTapped you are a getting a whole new switch fresh from the nib, and sticking it in your interface. That is probably not what you intend! And of course the switch comes from the nib in only one state, namely the state that you set it in the nib editor: it is On.
You need to abandon completely this incorrect architecture based on a misapprehension about what a nib is. You should load the nib once, and from then on you should refer to the switch by talking to the switch itself, the one that is now in your interface.
Related
Community!
I have some issue.
code:
protocol CellDelegate: class { }
class Cell: UITableViewCell {
.....
#IBOutlet weak var valueTextField: UITextField!
weak var delegate: CellDelegate?
.....
}
didSelectRowAt indexPath presents my ContainerView by overFullScreen, where I have:
class ContainerViewController: UIViewController {
.....
#IBOutlet private weak var fromTextField: UITextField!
#IBOutlet private weak var toTextField: UITextField!
#IBAction private func performChange(_ sender: UIButton) {
if let from = Int(fromTextField.text!), let to = Int(toTextField.text!) {
let cell = Cell()
cell.delegate = self
cell.valueTextField = "\(from) - \(to)"
self.dismiss(animated: false, completion: nil)
}
}
.....
}
extension ContainerViewController: CellDelegate { }
printDebug tells me that performChange sending my data well to other class, but cell.valueTextField is being nil when ContainerViewController dismiss and app crash
I know that I can make valueTextField.text = "1 - 5" //example from 1 to 5
with help of alert, but I need to make it with other viewController.
Please help me
You shouldn't use
let cell = Cell()
but instead add a delegate to the previous vc when you present the containervc (inside didSelectRowAt) and send the data before the dismiss , then change the array model of the table and finally refresh the table
I want to make error handling pages to all of my view controller through, so when error fetching data error, it's not only showing dialog, but showing a XIB files that contain error message and button to refresh. Like this:
Here's the XIB Class code:
import UIKit
class ErrorMessage: UIView {
#IBOutlet weak var imageViewError: UIImageView!
#IBOutlet weak var labelError: UILabel!
#IBOutlet weak var buttonTryAgain: UIButton!
static var message: String?
override func awakeFromNib() {
labelError.text = ErrorMessage.message
}
#IBAction func didTapTryAgain(_ sender: Any) {
Dialog.showProgressDialog(info: "")
}
}
Here's my base controller code, who handling all the problem.
import Foundation
class BaseViewController: UIViewController {
var uiView = UIView();
override func viewDidLoad() {
}
func getErrorMessage(message:String) {
super.viewDidLoad()
ErrorMessage.message = message
guard let viewErrorMessage = Bundle.main.loadNibNamed("ErrorMessage", owner: self, options: nil)?.first as? ErrorMessage else { return}
self.view.addSubview(viewErrorMessage)
}
}
And here's how I call it in another class which I extend BaseViewController, so it can show the error problem globally, without I redeclared again the class:
func onFailedDeleteCart(errorMessage: String) {
getErrorMessage(message: errorMessage)
}
Right now I can pass the error message.
The problem is, I want the Refresh button refreshing current View Controller when I click it. Maybe calling current View Controller's viewDidLoad when I click it will be the nice logic but I don't know how to implement it in XIB class. Anyone can solve out this? Thank you!
Approach: 1
Step:1 Create closure for callback
typealias RefreshBlock = (()->())?
Step:2 Define closure in your UIView class
Step:3 Call closure if user tap refresh button
class ErrorMessage: UIView {
#IBOutlet weak var imageViewError: UIImageView!
#IBOutlet weak var labelError: UILabel!
#IBOutlet weak var buttonTryAgain: UIButton!
var refreshBlock:RefreshBlock!
static var message: String?
override func awakeFromNib() {
labelError.text = ErrorMessage.message
}
// Step : 3
#IBAction func didTapTryAgain(_ sender: UIButton) {
refreshBlock!()
}
}
Step:4 Assign value in closure when addSubview called
class BaseViewController: UIViewController {
override func viewDidLoad() {
}
func getErrorMessage(message:String) {
super.viewDidLoad()
ErrorMessage.message = message
guard let viewErrorMessage = Bundle.main.loadNibNamed("ErrorMessage", owner: self, options: nil)?.first as? ErrorMessage else { return}
viewErrorMessage.refreshBlock = {()
self.viewDidLoad()
print("Refresh Contents")
}
self.view.addSubview(viewErrorMessage)
}
}
Approach: 2
Pass your current UIViewController Reference into UIView class. Refer below code.
class ErrorMessage: UIView {
#IBOutlet weak var imageViewError: UIImageView!
#IBOutlet weak var labelError: UILabel!
#IBOutlet weak var buttonTryAgain: UIButton!
var currentVC:UIViewController!
static var message: String?
override func awakeFromNib() {
labelError.text = ErrorMessage.message
}
#IBAction func didTapTryAgain(_ sender: UIButton) {
currentVC.viewDidLoad()
}
}
class BaseViewController: UIViewController {
override func viewDidLoad() {
}
func getErrorMessage(message:String) {
super.viewDidLoad()
ErrorMessage.message = message
guard let viewErrorMessage = Bundle.main.loadNibNamed("ErrorMessage", owner: self, options: nil)?.first as? ErrorMessage else { return}
viewErrorMessage.currentVC = self
self.view.addSubview(viewErrorMessage)
}
}
So I have a custom UIView with a button in it, called the home button. In other view controllers, this home button within this particular UIView works just fine. In one particular view controller, however, the home button is non responsive to touches- the app acts as though the button is not even there.
class TemplateChooserViewController: UIViewController, HeaderViewDelegate {
...
#IBOutlet weak var myHeader: HeaderView!
override func viewDidLoad() {
super.viewDidLoad()
myHeader.delegate = self
myHeader.Title.text = "Template Chooser"
... //All the rest of this function has been commented out and the home button still didn't work
}
func homeButtonTapped()
{
let home = self.navigationController?.viewControllers.first //code never reaches here
self.navigationController?.popToViewController(home!, animated: false)
}
And the HeaderView file looks like:
protocol HeaderViewDelegate: class {
func homeButtonTapped()
func informationButtonTapped()
}
class HeaderView: UIView {
weak var delegate: HeaderViewDelegate?
#IBOutlet var view: UIView!
#IBOutlet weak var Title: UILabel!
#IBOutlet weak var flameDecal: UIImageView!
#IBOutlet weak var homeButton: UIButton!
required init(coder aDecoder: NSCoder)
{
super.init(coder: aDecoder)!
Bundle.main.loadNibNamed("HeaderView", owner: self, options: nil)
self.addSubview(self.view)
}
#IBAction func homeButtonTouched(_ sender: UIButton)
{
delegate?.homeButtonTapped() //Code also doesn't reach here
}
#IBAction func infoButtonTouched(_ sender: UIButton) {
delegate?.informationButtonTapped()
}
}
Keep in mind the code compiles fine, so I did have the infoButtonTouched function implemented, I just didn't see the point in showing it. I have no idea why the button is unresponsive. Any ideas on how to get the button to respond would be most helpful. Thanks for your consideration of this matter.
Sincerely,
Sean
I need the stepper and label to reset back to 0 at the same time that my variables reset. The problem is the steppers and labels are in a different class and are not resetting when the variables do. I tried using delegates(if someone can show me the best way that would be great) instead of an instance of my view controller, but I can't get anything to work. Thanks for any help in advance.
ViewController:
class ViewController: UIViewController
{
var colors = CircleView()
#IBOutlet weak var circleView1: CircleView!
#IBOutlet weak var blueStepper: UIStepper!
#IBOutlet weak var greenStepper: UIStepper!
#IBOutlet weak var redStepper: UIStepper!
#IBAction func stepperChange(sender: UIStepper)
{
circleView1.redd1 = Int(redStepper.value);
redValue.text = Int(sender.value).description;
}
#IBAction func stepperChange1(sender: UIStepper)
{
circleView1.greenn1 = Int(greenStepper.value);
greenValue.text = Int(sender.value).description;
}
#IBAction func stepperChange2(sender: UIStepper)
{
circleView1.bluee1 = Int(blueStepper.value);
blueValue.text = Int(sender.value).description;
}
}
UIView:
class CircleView: UIView
{
var colors1=ViewController()
func updateStepper
{
if(redd1==Int(red1)&&greenn1==Int(green1)&&bluee1==Int(blue1))
{
redd1=0;
greenn1=0;
bluee1=0;
colors1.redStepper.value=0.0;//
colors1.greenStepper.value=0.0;//
colors1.blueStepper.value=0.0;//
}
}
}
I do not quite understand your code, like the "if" condition in your CircleView, the lack of parameters to the method "updateStepper". I am assuming you just wrote some "swift-pseucode" and I will ignore some parts of it to explain how you could implement a delegate for it. Below is an example code:
import UIKit
protocol CircleViewDelegate: class {
func updateStepper(view: CircleView)
}
class ViewController: UIViewController, CircleViewDelegate{
#IBOutlet weak var circleView1: CircleView!
#IBOutlet weak var blueStepper: UIStepper!
#IBOutlet weak var greenStepper: UIStepper!
#IBOutlet weak var redStepper: UIStepper!
var circleViewDelegate: CircleView!
override func viewDidLoad() {
super.viewDidLoad()
circleViewDelegate = circleView1
circleViewDelegate!.delegate = self
}
func updateStepper(view: CircleView) {
//code you want to execute when you call updateStepper() in the CircleView()
}
}
class CircleView: UIView {
weak var delegate: CircleViewDelegate?
func updateStepper() {
//whenever you want your viewController to updated other views based
//on a condition inside an element like UIView, you can use a delegate
//this way, your code is executed by the ViewController whenever you want
delegate?.updateStepper(self)
}
}
A callback in your UIView must be set to call "updateStepper" when you want. Unfortunately, I didn't quite understand the time it should be called according to your question.
I hope this helps!
Have you tried NSNotification?
If it's always going to reset to zero, then create a func without the if statement in CircleView:
func resetStepper(not: NSNotification) {
r1 = 0
g1 = 0
b1 = 0
c1.rStep.value = 0.0
c1.bStep.value = 0.0
c1.gStep.value = 0.0
}
Also in CircleView's createView func, add:
NSNotificationCenter.defaultCenter().addObserver(self, selector: "resetStepper:", name: "ResetStepper", object: nil)
Then in the view controller, post a notification from whichever button is calling it.
#IBAction func callReset(sender: AnyObject) {
NSNotificationCenter.defaultCenter().postNotificationName("ResetStepper", anObject: nil)
}
That will send the notification that CircleView is listening for to call the function.
Hope that works for you.
I am struggling with this awful project for two weeks now and nothing seems to work. I have to do an app that loads some words from a server and presents them as pins on a map(MKView). I have to cluster the pins when the user zooms-out and for that I have used a this-party library written in Objective-C, but I also had to make a custom callout view with a button. When the user presses the said button the app should go to a TableViewController and here is my problem: I can't make it to do it. I have used before the "performSegueWIthIdentifier" and it worked very well, but now I get the error "there is no segue with '---' identifier". I know there are many other threads with this, but none of the solutions there work for me. Moreover, I have tried to instantiate the ViewController programmatically, but this does not work either because I get the "unexpectedly found nil..." and I don't know what to do any more.
I know I am doing something wrong, most probably how I call these functions, but I don't know what. This is what I have tried until now:
in the .xib file I have this:
import UIKit
class MarkerInfoView: MKAnnotationView {
#IBOutlet weak var theButton: UIButton!
#IBAction func readIt(sender: AnyObject) {
ViewController.goToArticles()
}
}
and in the ViewController:
class func goToArticles(){
ViewController().reallyGoToArticles()
}
I did this because I could not find another way to be able to call performSegueWithIdentifier or presentViewController
func reallyGoToArticles(){
println("let's go!")
let theArticlesSB = UIStoryboard(name: "Main", bundle: nil)
let vc = theArticlesSB.instantiateViewControllerWithIdentifier("theArticles") as! articlesViewController
self.presentViewController(vc, animated: true, completion: nil)
self.performSegueWithIdentifier("showArticles", sender: self)
}
I have uncommented both options just to show you.
I have uploaded the project here
Thank you very much!
Update
I forgot to mention that if I put the line
self.performSegueWithIdentifier("showArticles", sender: self)
in viewDidLoad it works
I had a look at your project and found your issue.
In MarkerInfoView.swift, you call ViewController.goToArticles() which is a class function:
class func goToArticles(){
ViewController().reallyGoToArticles()
}
This class function creates a NEW instance of ViewController which has nothing to do with the storyboard (and is not aware of segues).
You have to call self.reallyGoToArticles() from an instance method like
func goToArticles(){
self.reallyGoToArticles()
}
You have to manage to call the existing ViewController from your MarkerInfoView
EDIT: Here is how to achieve it
MarkerInfoView.swift
class MarkerInfoView: MKAnnotationView {
var vc: ViewController!
#IBOutlet weak var placePhoto: UIImageView!
#IBOutlet weak var nameLabel: UILabel!
#IBOutlet weak var detailsLabel: UILabel!
#IBOutlet weak var theButton: UIButton!
#IBAction func readIt(sender: AnyObject) {
vc.goToArticles()
}
}
ViewController.swift
func mapView(mapView: MKMapView!, didSelectAnnotationView annotation: MKAnnotationView!)
{
if let pin = annotation.annotation as? CustomPointAnnotation{
if var infoView = UIView.viewFromNibName("MarkerInfoView") as? MarkerInfoView {
infoView.nameLabel.text = pin.theTitle
infoView.detailsLabel.text = pin.theDetails
infoView.vc = self
infoView.center = CGPointMake(self.view.bounds.width/2, self.view.bounds.height/2)
self.view.addSubview(infoView)
} else {
}
}
}
func goToArticles(){
self.reallyGoToArticles()
}