Is it not possible to use both of these at the same time. Originally, I have overriden (Swift) touchesBegan/Moved/Ended in my ViewController.
Now, I'm wanting to add a TapGestureRecognizer to certain views under a certain situation, but the selector/action never gets fired.
class ViewController: UIViewController, UIGestureRecognizerDelegate {
...
func addTapGesturesOnNumberPadDisplay() {
if tapGestureRecognizerNumberPadView == nil {
tapGestureRecognizerNumberPadView = UITapGestureRecognizer(target: self, action: "handleTap:")
tapGestureRecognizerNumberPadView!.delegate = self
self.numberViewDone?.addGestureRecognizer(tapGestureRecognizerNumberPadView!)
}
}
...
func handleTap(sender: UITapGestureRecognizer) {
//never hit
Is this not possible? Should I just implement my own tapping ability in touchesBegan since I'm overriding it anyway, or is there a way to also use a tapGestureRecognizer here?
Since you have overriden touchesBegan/Moved/Ended in viewcontroller it should not have any impact on tap gestures in other subviews. Ideally it should work. Please check code below, works as expected.
class ViewController: UIViewController, UIGestureRecognizerDelegate {
#IBOutlet weak var categoryScrollView: UIScrollView!
var customView: UIView!
var tapGestureRecognizerNumberPadView : UITapGestureRecognizer?
override func viewDidLoad() {
super.viewDidLoad()
customView = UIView()
customView.frame.origin = CGPointMake(50,50)
customView.frame.size = CGSizeMake(100, 100)
customView.backgroundColor = UIColor.blueColor()
self.view.addSubview(customView)
addTapGesturesOnNumberPadDisplay()
}
func addTapGesturesOnNumberPadDisplay() {
if tapGestureRecognizerNumberPadView == nil {
tapGestureRecognizerNumberPadView = UITapGestureRecognizer(target: self, action: "handleTap:")
tapGestureRecognizerNumberPadView!.delegate = self
self.customView?.addGestureRecognizer(tapGestureRecognizerNumberPadView!)
}
}
func handleTap(sender: UITapGestureRecognizer) {
print("handleTap")
}
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
}
override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) {
}
override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
}
}
Please check is there any other gestures to 'numberViewDone' view.
Related
I have a button that needs to open a web view on another controller in modally. currently the button executes the code you see below. I would like the button to open the webview directly. the link changes because it is an rss reader and therefore, based on the cell pressed, changes the link of the button that must open the webview.
this is the code that manages the controller that appears after the cell has been pressed
class FeedItemWebViewController: UIViewController, UIWebViewDelegate {
#IBOutlet weak var textView: UITextView!
var link: String? = nil
var descriptionTesto:String? = nil
override func viewDidLoad() {
super.viewDidLoad()
self.textView.text = descriptionTesto
}
#IBAction func apri(_ sender: UIBarButtonItem) {
guard let url = URL(string: self.link ?? "") else { return }
UIApplication.shared.open(url, options: [:], completionHandler: nil)
}
}
here is where it manages the controller where I entered the webview
class OpenSafariController: UIViewController, UIWebViewDelegate {
#IBOutlet weak var myWebView: UIWebView!
override func viewDidLoad() {
super.viewDidLoad()
}
#IBAction func ritornaLista(_ sender: UIBarButtonItem) {
self.presentingViewController?.presentingViewController?.dismiss(animated: false, completion: nil)
}
}
delete the webview controller that is not needed. import SafariServices. here is the code to put on the button
#IBAction func apri(_ sender: UIBarButtonItem) {
let svc = SFSafariViewController(url: URL(string: self.link ?? "")!)
self.present(svc, animated: true, completion: nil)
}
I have a Xib file trying to set it up with my storyboard. Everything in the Xib file is fine, but for some reason, it's not showing. I imported a file from GitHub which is set to my Xib, it's in Objective-C and I set the bridging, no errors. But when I run it nothing shows its blank. Did I not set something in the View Controller? Everything is done programmatically and I just set the class in storyboard.
Screenshot of storyboard:
What the simulator gives me when I push to the ViewController:
This is what I'm supposed to see:
What I am trying to implement -
https://github.com/jberlana/JBCroppableView
My XIB class
import UIKit
class CropViewXIB: UIView {
#IBOutlet weak var ImageView: JBCroppableImageView!
#IBAction func SubAction(_ sender: Any) {
ImageView.removePoint()
}
#IBAction func AddAction(_ sender: Any) {
ImageView.addPoint()
}
#IBAction func UndoAction(_ sender: Any) {
ImageView.reverseCrop()
}
#IBAction func CropAction(_ sender: Any) {
ImageView.crop()
}
override init(frame: CGRect) {
super.init(frame: frame)
commomInit()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
commomInit()
}
private func commomInit(){
Bundle.main.loadNibNamed("CropViewXIB", owner: self, options: nil)
self.addSubview(ImageView)
ImageView.frame = self.bounds
ImageView.autoresizingMask = [.flexibleHeight, .flexibleWidth]
}
}
my view controller
import UIKit
class ViewController: UIViewController {
#IBOutlet weak var cropView: CropViewXIB!
override func viewDidLoad() {
super.viewDidLoad()
}
}
The issue is that you didn't actually get the parent view for your UINib object.
Bundle.main.loadNibNamed("CropViewXIB", owner: self, options: nil)
The line above returns an [Any] in your case you aren't even using the view that it is returning. so the idea is to get the first object from it and cast it as UIView such as:
Bundle.main.loadNibNamed("CropViewXIB", owner: self, options: nil)?.first as? UIView
Personally this is how I interact with a Nib. I create a view property of type UIView that can be referred as the parent view for the nib, and all subviews get added to it instead of self.
Something like this:
final class SomeNibView: UIView {
public var view: UIView!
private func setup() { // called to the initializer
// grab the views from loadNibNamed
guard let _view = Bundle.main.loadNibNamed("name", owner: self, options: nil)?.first as? UIView else { return }
// set it to our view property
view = _view
// add this property to the nib subview aka self
addSubview(view)
view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
}
private func addMulitpleSubviews() {
// instead of doing self.addSubview(....) when it comes to add other subviews
// you'll do this view.addSubview(....)
}
}
Try to load xib using programming not using storyboard.
override func viewDidLoad()
{
super.viewDidLoad()
guard let yourXIB = Bundle.main.loadNibNamed("CropViewXIB", owner: self, options: nil)?.first as? CropViewXIB else { return}
self.view.addSubview(yourXIB)
}
Two view controllers:
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if (sender as! cell1).name.text == "ww"{
let s = segue.destination as! DetailViewController
s.detail?.text = "wwwwwwwwwww"
}
}
I am new to coding. What I am trying here is to communicate between view controllers. For some reason, I am not able to show the wwwwwwwwwww in the label of the second view controller
At the prepare function the view hasn't been loaded yet from storyboard, so the outlets of the DetailViewController are still nil.
Create a public variable in the DetailViewController which will be available at prepare, then in the viewDidLoad method of DetailViewController you can set the label's text to be the content of that variable.
class DetailViewController: UIViewController {
var text: String?
override function viewDidLoad() {
super.viewDidLoad()
label.text = text
}
}
Then in your list viewcontroller set the text property of detail vc:
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
guard (sender as! cell1).name.text == "ww",
let detailVc = segue.destination as? DetailViewController
else { return }
detailVc.text = "wwwwwwwwwww"
}
How do i add the text to from my textfield into an array that is made in another ViewController.
class FirstViewController: UIViewController, UITableViewDelegate {
var thingsToDo = []
class SecondViewController: UIViewController {
#IBOutlet weak var enterTask: UITextField!
#IBAction func addtask(sender: AnyObject) {
thingsToDo += enterTask.text
}
You can use the prepareForSegue-method to pass objects to another viewcontroller. First you have to add global variable in your SecondViewController.
var theThingsToDo:[AnyObject]!
Then, in your FirstViewController, you can use the prepareForSegue-method and pass the value from your FirstViewController to your SecondViewController. It is important that you set the name of the segue in your Storyboard.
You can find the segue-identifier in the top right corner of Xcode:
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?){
if segue.identifier == "yourSegueIdentifier" {
// Value of the FirstViewControllers variable 'thingsToDo' will be sent to the SecondViewController
(segue.destinationViewController as SecondViewController).theThingsToDo = thingsToDo
}
}
#IBAction func addtask(sender: AnyObject) {
theThingsToDo += enterTask.text
}
I am working with Swift and am having a problem loading saved data into UITableView custom cell. I have created a ViewController/ TableViewController and TableViewCell. The form data is saving and is displayed in console. The problem is, nothing gets returned when going back to TableView (My list). I have created labels in the custom cell and everything seems to be linked correctly, but nothing is being displayed.. Am I missing something?
Here is the code from my ViewController:
import UIKit
import CoreData
class DetailsViewController: UIViewController, UITextFieldDelegate, UITextViewDelegate {
var cell:UITableViewCell?
#IBOutlet var txtPTitle: UITextField!
#IBOutlet var txtPDesc: UITextField!
#IBOutlet var txtSDate: UITextField!
#IBOutlet var txtEDate: UITextField!
// Add our date picker keyboard on Project Start Date
#IBAction func dp(sender: UITextField!) {
var datePickerView : UIDatePicker = UIDatePicker()
datePickerView.datePickerMode = UIDatePickerMode.Date
sender.inputView = datePickerView
datePickerView.addTarget(self, action: Selector("handleDatePicker:"), forControlEvents: UIControlEvents.ValueChanged)
}
func handleDatePicker(sender: UIDatePicker) {
var dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "MMM dd yyyy"
txtSDate.text = dateFormatter.stringFromDate(sender.date)
}
#IBAction func dp2(sender: UITextField!) {
var datePickerView : UIDatePicker = UIDatePicker()
datePickerView.datePickerMode = UIDatePickerMode.Date
sender.inputView = datePickerView
datePickerView.addTarget(self, action: Selector("handleDatePicker2:"), forControlEvents: UIControlEvents.ValueChanged)
}
func handleDatePicker2(sender: UIDatePicker) {
var dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "MMM dd yyyy"
txtEDate.text = dateFormatter.stringFromDate(sender.date)
}
var project: String = ""
var desc: String = ""
var sdate: String = ""
var edate: String = ""
var existingItem: NSManagedObject!
override func viewDidLoad() {
super.viewDidLoad()
if (existingItem != nil) {
txtPTitle.text = project
txtPDesc.text = desc
txtSDate.text = sdate
txtEDate.text = edate
}
//Do any additional setup after loading the view.
txtPTitle.delegate = self
txtPDesc.delegate = self
txtSDate.delegate = self
txtEDate.delegate = self
}
func textFieldShouldReturn(textField: UITextField!) -> Bool {
textField.resignFirstResponder()
txtPDesc.resignFirstResponder()
return true
}
override func touchesBegan(touches: NSSet!, withEvent event: UIEvent!) {
self.view.endEditing(true)
}
#IBAction func savedTapped(sender: AnyObject) {
// Reference to our app delegate
let appDel: AppDelegate = UIApplication.sharedApplication().delegate as AppDelegate
// Reference moc
let contxt: NSManagedObjectContext = appDel.managedObjectContext!
let en = NSEntityDescription.entityForName("ProjectTask", inManagedObjectContext: contxt)
// Check if task exists
if (existingItem != nil) {
existingItem.setValue(txtPTitle.text as String, forKey: "project")
existingItem.setValue(txtPDesc.text as String, forKey: "desc")
existingItem.setValue(txtSDate.text as String, forKey: "sdate")
existingItem.setValue(txtEDate.text as String, forKey: "edate")
} else {
// Create instance of our data model and initialize
var newItem = Model(entity: en, insertIntoManagedObjectContext: contxt)
// Map our properties
newItem.project = txtPTitle.text
newItem.desc = txtPDesc.text
newItem.sdate = txtSDate.text
newItem.edate = txtEDate.text
println(newItem)
}
// Save our context
contxt.save(nil)
// Navigate back to root view controller
self.navigationController.popToRootViewControllerAnimated(true)
}
#IBAction func cancel(sender: AnyObject) {
// Navigate back to root view controller
self.navigationController.popToRootViewControllerAnimated(true)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
Here is the code from my TableViewController:
import UIKit
import CoreData
class ListTableViewController: UITableViewController, UITableViewDataSource {
override func viewDidLoad() {
super.viewDidLoad()
//Register Our Custom Table Cell //
self.tableView.registerClass(ProjectTableViewCell.self, forCellReuseIdentifier: "projectlist")
func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell! {
var cell = tableView.dequeueReusableCellWithIdentifier("projectlist", forIndexPath: indexPath) as ProjectTableViewCell
cell.projectLabel.text = "project"
return cell
}
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = false
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
override func numberOfSectionsInTableView(tableView: UITableView!) -> Int {
// #warning Potentially incomplete method implementation.
// Return the number of sections.
return 1
}
override func tableView(tableView: UITableView!, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete method implementation.
// Return the number of rows in the section.
return 0
}
Here is the code from the TableViewCell
import UIKit
import CoreData
class ProjectTableViewCell: UITableViewCell {
#IBOutlet var projectLabel: UILabel! = UILabel()
#IBOutlet var descriptionLabel: UILabel! = UILabel()
#IBOutlet var sdateLabel: UILabel! = UILabel()
#IBOutlet var edateLabel: UILabel! = UILabel()
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
override func setSelected(selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}
I also have another for NSManagedObject
import UIKit
import CoreData
#objc(Model)
class Model: NSManagedObject {
//Properties feed of attributes on our database - Must match the database attributes
#NSManaged var project: String
#NSManaged var desc: String
#NSManaged var sdate: String
#NSManaged var edate: String
}
Is there something I am missing here? This is driving me crazy. I read that this should be added to the tableviewcell, but I keep getting error this error: tableviewcell does not implement its superclass's required members
init(style: UITableViewCellStyle, reuseIdentifier: String!) {
super.init(style: UITableViewCellStyle.Value1, reuseIdentifier: reuseIdentifier)
}
Your problem is that you're registering the class -- you should only do that if you create the cell entirely in code (that is, the subviews are created programmatically). If you made the cell in the storyboard, don't register anything. If you made it in a xib, then register the nib. All those lines like,
#IBOutlet var projectLabel: UILabel! = UILabel()
don't make sense. You're creating a new label with no frame, but I assume you already created theses labels in IB somewhere (since you're using IBOutlets). If you did create them in IB, then those lines should be like so,
#IBOutlet var projectLabel: UILabel!
Please replace your init in TableViewCell class with following -
required init(coder aDecoder: NSCoder!) {
super.init(coder: aDecoder)
}