How to dismiss keyboard with multiple UITextField - ios

I'm a noob here and in iOS world. I am having trouble dismiss keyboard on a specific case in my very simple todo list iOS app.
I'd like the keyboard to get dismiss when user taps anywhere outside the current text field or the keyboard itself. So far, I got the keyboard dismisses just fine (thanks to you guys here in stack overflow) when user taps on the UITableView, or most element on my app. HOWEVER, when user taps on another UITextField, the keyboard does not go away.
FYI, here's the list of existing threads I researched so far but have yet to solve this issue.
1) How to dismiss keyboard iOS programmatically
2) Resigning First Responder for multiple UITextFields
3) Dismissing the First Responder/Keyboard with multiple Textfields
4) (a few more at least but I lost track :( )
Here's what I did so far:
(in viewDidLoad())
// Add 'tap' gesture to dismiss keyboard when done adding/editing to-do item
var tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: "tapOutside:")
tap.cancelsTouchesInView = true
self.view.addGestureRecognizer(tap)
func tapOutside(tapOutside: UIGestureRecognizer) {
// Dismiss keyboard
self.view.endEditing(true)
}
#IBAction func EditingDidBegin(sender: UITextField) {
// Highlight the text field which user is editing
self.highlightTextField(sender, highlight: true)
}
#IBAction func EditingDidEnd(sender: UITextField) {
// Undo text field highlight
self.highlightTextField(sender, highlight: false)
self.view.endEditing(true) // try this option and not working
self.setEditing(false, animated: true) // try this option and not working
sender.resignFirstResponder() // try this option and not working
UIApplication.sharedApplication().becomeFirstResponder() // try this option and not working
... // below is my code to update the todo item
}
I also tried to print out all subviews.isFirstResponder() of my view. All of it return false. I also tried override touchesBegan of my UIViewController, and inside it just calls self.view.endEditing(true) and call its super's. This also does not work.
Please help. :(
TIA!
UPDATE:
You guys are awesome! :D I got it working now thanks to you guys. There were several mistakes / messed up as I'm learning new framework. So here's what I did.
1) I did not set UITextField delegate correctly.
Mistake: I ctrl-draged textfield in xcode and link my viewController as delegate and thought that should work out. I will still need to research and understand better why.
Solution: I removed that ctrl-drag link and explicitly call myTextField.delegate = self in tableView:cellForRowAtIndexPath. And that did it. Thanks #Sidewalker
2) Mistake: I have a mixed of textFieldShouldBeginEditing, etc. and #IBAction func EditingDidBegin. So I got myself into the situation where textFieldShouldBeginEditing got the call, but EditingDidBegin did not get call.
Solution: Once I set the delegate = self explicitly and stick with implementing textField... methods and not use any #IBAction for textField, things just work.

Here's one option... We're going to add a boolean flag to determine whether or not we're in a textField when an edit attempt for another textField begins
Make your class adhere to UITextFieldDelegate
class MyClass: UIViewController, UITextFieldDelegate
Don't forget to set the delegate, we'll add the flag as well
myTextField.delegate = self
var inField = false
Implement "textFieldShouldBeginEditing" and "textFieldDidBeginEditing"
func textFieldShouldBeginEditing(textField: UITextField) -> Bool {
if inField {
inField = false
return false
}
return true
}
func textFieldDidBeginEditing(textField: UITextField) {
inField = true
}
I prefer tracking things like this rather than identifying subviews as it allows the flag to be utilized elsewhere and cuts down code complexity.

Well the keyboard isn't going away because it doesn't expect to have to. The new UITextField is just becoming the first responder while the other resigns. If you don't want a textField to become the first responder if another is already, you're going to have to cut it off before it gets the chance to. I would try to implement textFieldShouldBeginEditing and figuring out the logic there.
I'm not in love with the way this looks but this should do something along those lines.
func textFieldShouldBeginEditing(textField: UITextField) -> Bool {
for subView in self.view.subviews{
if(subView.isKindOfClass(UITextField)){
if(subView.isFirstResponder()){
subView.resignFirstResponder();
return false;
}
}
}
return true;
}

First set all the UITextField (your are creating) delegate as self and create one UITextField member variable. Now implement "textFieldDidBeginEditing" delegate method and assign the textfield to your member UITextField variable. As given below
func textFieldDidBeginEditing(textField: UITextField) {
yourMemberVariable = textField;
}
So now whenever you want to dismiss the keyboard call the dismiss method on "yourMemberVariable" object. It should work !!

What I usually do is implementing this two method:
The first one add a UITapGestureRecognizer to the whole UIViewController view
func hideKeyboard() {
let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(dismissKeyboard))
view.addGestureRecognizer(tap)
}
The second one just get called every time the user touch anywhere on the UIViewController's view
func dismissKeyboard() {
self.view.resignFirstResponder()
}
I add the first one to the viewDidLoad method of the UIViewController. Or better yet if you want to use that on all the app just make that an extension for your UIViewController.

How about doing this in viewController, It works for me
func dismissKeyboard() {
//All the textFields in the form
let textFields = [textField1, textField2, textField3, textField4, textField5]
let firstResponder = textFields.first(where: {$0.isFirstResponder ?? false })
firstResponder?.resignFirstResponder()
}

Related

Make UITextField clear content each time return key pressed

I'm learning Swift by making a times tables app, which simply creates random times tables and asks the user to type the answer in a UITextField.
I'd like the user to be able to tap the return key and have the text field clear their previous answer and have the keyboard remain in view. I've already set up the other behaviour I want, it's just I can't seem to find any similar questions to figure out how to clear, and do all this when there return key is tapped.
Here's the code I have so far, which works when dismissing the keyboard, and doesn't clear the field.
Many thanks!
#IBAction func answerTyped(_ sender: UITextField) {
/* Clear the text field*/
questionNumber += 1
attempted += 1
markQuestion(answer: answer)
newQuestion(awardLevel: currentLevel, questionNumber: questionNumber)
}
If you want the textField to be cleared on tapping return button you can use the textFieldShouldReturn delegate.
func textFieldShouldReturn(_ textField: UITextField) -> Bool { //delegate method
textField.text = "" // Clears text
//Do other things that you want to do when user taps return button
return true
}
Note that this wont dismiss the textField like how you asked and usually users are used to dismissing their textField using return. So if you ask me this is not good UX. And you need to have a mechanism for the user to dismiss the keyboard if needed like tap outside to dismiss or something. So i hope you have that sorted out.
Your viewController should have implemented the UITextFieldDelegate for this method work.
class YourViewController: UITextFieldDelegate {
var textField: UITextField! //Using IBOutlet or whatever
func viewDidLoad() {
super.viewDidLoad()
textField.delegate = self
}
}
you will need to make something, likely your view controller containing this text field into a uitextfieldelegate, then add the necessary delegate functions.
I think the function you want is TextField:DidEndEditing:Reason https://developer.apple.com/documentation/uikit/uitextfielddelegate/2352220-textfielddidendediting
Or you can just use
func textFieldShouldReturn(_ textField: UITextField) -> Bool { //delegate method
textField.resignFirstResponder()
return true
}
which is called every time user hits the return key. You would need to add your logic to clear the contents before the returns.

UITapGestureRecognizer not working - Swift 3

I see that there are a ton of these questions, and I think I'm following the accepted Swift 3 methodology, but I'm still getting nothing. I can see that the UITapGestureRecognizer has been attached. Here's my code:
let tileClick = UITapGestureRecognizer(target: self, action: #selector(GameManagement.initiateTileClick(_:)))
newView.addGestureRecognizer(tileClick)
newView.isUserInteractionEnabled = true
func initiateTileClick(_ sender: UITapGestureRecognizer) {
print("initiate tile click")
}
A few things to note:
1) The view that I'm attaching the gesture recognizer to has a two views and a label within it that each cover the entire frame of the view, however, I tried attaching the recognizer to the label, which is the topmost child item and it still doesn't work.
2) Both the function that adds the recognizer and the function that is called on the tap are contained in an NSObject file. I have a variety of interconnected functions that I want to be able to call from multiple view controllers and would prefer to keep this in the separate NSObject file. The process worked when I had everything in a UIViewController file and stopped working when I moved the functions to the NSObject file.
3) I've tried changing GameManagement.initiateTileClick to self.initiateTileClick or just initiateTileClick and none of those worked.
If you are putting your views inside NSObject subclass then these views will lose their behaviors for UIResponder which manages the UI interactions as I am not able to see how you are adding these views to interface.
As you said, it was working inside ViewController because it manages view hierarchy and responder chain.
The solution would be to write extensions to separate code or better abstractions.
extension YourViewController {
newView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(GameManagement.initiateTileClick(_:))))
newView.isUserInteractionEnabled = true
func initiateTileClick(_ sender: UITapGestureRecognizer) {
print("initiate tile click")
}
}
Giving you an idea how the tap recogniser works.
Firstly add Tap gesture recogniser to your view controller. You have to put the object here as shown in the image.
Then control+drag the tap gesture object to your view and select delegate.
Then control+drag the recogniser to your swift file and action will be like this.
#IBAction func tapGesture(_ sender: UITapGestureRecognizer) {
}
Now you must have seen when you give some input to a text field, the keyboard appears. But if you press outside the text field, that is anywhere in the view, the keyboard hides. This is because of the tap gesture recogniser.
Consider you have a text field such that if you click in that text field, keyboard is appeared. But when you tap outside the textfield, the keyboard must hide.
Add this delegate
UITextFieldDelegate
Implement this:
#IBOutlet var phoneText: UITextField!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
exampleText.delegate = self
}
#IBAction func tapGesture(_ sender: UITapGestureRecognizer) {
exampleText.endEditing(true)
}
Obviously,this function is instance method.
func initiateTileClick(_ sender: UITapGestureRecognizer) {
print("initiate tile click")
}
-
UITapGestureRecognizer(target: self, action:#selector(GameManagement.initiateTileClick(_:)))
but thisGameManagement.initiateTileClick(_:) looks like a class is calling a class method!The target should be the caller of method.self can't call GameManagement.initiateTileClick(_:).

Avoid keyboard closing when iPhone rotated XCode Swift

I have in left navigation item UITextField. When I type something in there and rotate device, keyboard hides everytime.
I tried to handle UIKeyboardWillHideNotification, but all what I got is: keyboard closes and shows again after that. It's not good, I need to rotate keyboard along with view...
Please help in Swift 2.
Okay, I found the solution!
First, need to implement delegate:
ViewController: UIViewController, UITextFieldDelegate
Next, add to viewDidLoad method:
override func viewDidLoad() {
super.viewDidLoad()
textField.delegate = self
}
To the end, realise textFieldShouldEndEditing function:
func textFieldShouldEndEditing(textField: UITextField) -> Bool {
//here we can add some if-block for orientation change or smth else
return false
}
override func willRotateToInterfaceOrientation(toInterfaceOrientation: UIInterfaceOrientation, duration: NSTimeInterval) {
textField.becomeFirstResponder()
}
The method above here gets called when the device will rotate, as you don't care about the orientation we don't check it and simple instruct the textfield you are editing to become first responder.

Hide keyboard on tap on each view - Swift

I'm not going to ask how to hide the keyboard after you are done with editing a textField. My question is : Is there a way to do this on each view ? (like a setting) or do I need to write the two following functions and set the delegate properly every time ?
func textFieldShouldReturn(textField: UITextField) -> Bool // called when 'return' key pressed. return NO to ignore.
{
textField.resignFirstResponder()
return true;
}
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
self.view.endEditing(true)
}
I'm developing an app with a lot of textfields (and also views) so I try to avoid redundance code. What is the best solution to avoid this repetition?
Thank you!
You can create your own text field, which is subclass of UITextField. See the simple custom UITextField below:
import UIKit
class CustomTextField: UITextField, UITextFieldDelegate {
override func awakeFromNib() {
super.awakeFromNib()
self.delegate = self
}
func textFieldShouldReturn(textField: UITextField) -> Bool {
self.resignFirstResponder()
return true
}
}
Use your custom text field name to Custom Class in your Storyboard.
See my example at Github
The easiest thing to do, is put one giant invisible button the size of the screen underneath your text fields, then when a non text field is tapped, you call the invisible button action to close it. If this does not apply in your scenario please let me know.
Create an IBAction method to dismiss keyboard
#IBAction func backgroundTapped (sender: UIView)
{
sender.endEditing(true)
}
Change the class of your UIView to UIControl which contains the textfields in storyboard (You can even do that to your view of the viewcontroller as shown)
It looks like this:
Now you can connect the IBAction to the Touch Up Inside event of this view, in the storyboard, as shown.

resignFirstResponder and endEditing (even global calls) are not hiding the keyboard

I have a ViewController set as a delegate for a UITextField. No matter what I try, I can not get the keyboard to hide when calling textFieldShouldReturn.
My viewDidLoad method:
override func viewDidLoad() {
super.viewDidLoad()
self.view.addSubview(newModelField)
newModelField.delegate = self
self.presetTableView.registerClass(UITableViewCell.self, forCellReuseIdentifier: "presetCell")
//self.view.becomeFirstResponder()
}
and my textFieldShouldReturn method:
func textFieldShouldReturn(textField: UITextField) -> Bool {
//UIApplication.sharedApplication().sendAction("resignFirstResponder", to:nil, from:nil, forEvent:nil)
if(textField.text! != ""){
items.append(textField.text!)
presetTableView.reloadData()
textField.text! = ""
//self.view.resignFirstResponder()
//self.addView.resignFirstResponder()
//textField.endEditing(true)
//self.view.endEditing(true)
UIApplication.sharedApplication().delegate?.window?!.endEditing(true)
return false
}
return true
}
You can see from my commented out attempts that I have tried a whole host of different fixes. I know that textFieldShouldReturn is being called after debugging with print statements. I can not figure out why the keyboard won't hide.
I tried swapping the return true and false statements. I tried setting the delegate from the storyboard. I tried deleting the textField from storyboard, cleaning, and adding it back in. I tried all top level calls to resignFirstResponder and endEditing as well as calls to these functions for the textfield and the view.
To dismiss the keyboard, send the resignFirstResponder message to the text >field that is currently the first responder. Doing so causes the text >field object to end the current editing session (with the delegate >object’s consent) and hide the keyboard.
yourTextField.resignFirstResponder()
I tried using resignFirstResponder() on textFiled and also used endEditing(true) on my view but I did this small mistake of implementing this other delegate and was returning false
func textFieldShouldEndEditing(textField: UITextField) -> Bool { //delegate method
return true
}

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