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.
Related
This question already has answers here:
Detect shake gesture IOS Swift
(7 answers)
Closed 5 years ago.
Hi I want to identify the iPhone SHAKE when user shakes their phone, either in background mode or in foreground mode of the app.
Please assist me.
Thanks in advance.
Try something like this:
override func motionBegan(_ motion: UIEventSubtype, with event: UIEvent?) {
print("Device was shaken!")
}
The main trick is that you need to have some UIView (not UIViewController) that you want as firstResponder to receive the shake event messages. Here's the code that you can use in any UIView to get shake events:
class ShakingView: UIView {
override func motionEnded(_ motion: UIEventSubtype, with event: UIEvent?) {
if event?.subtype == .motionShake {
// Put in code here to handle shake
}
if super.responds(to: #selector(UIResponder.motionEnded(_:with:))) {
super.motionEnded(motion, with: event)
}
}
override var canBecomeFirstResponder: Bool { return true }
You can easily transform any UIView (even system views) into a view that can get the shake event simply by subclassing the view with only these methods (and then selecting this new type instead of the base type in IB, or using it when allocating a view).
In the view controller, you want to set this view to become first responder:
override func viewWillAppear(_ animated: Bool) {
shakeView.becomeFirstResponder()
super.viewWillAppear(animated)
}
override func viewWillDisappear(_ animated: Bool) {
shakeView.resignFirstResponder()
super.viewWillDisappear(animated)
}
Don't forget that if you have other views that become first responder from user actions (like a search bar or text entry field) you'll also need to restore the shaking view first responder status when the other view resigns!
This method works even if you set applicationSupportsShakeToEdit to NO.
For objective c version refer link How do I detect when someone shakes an iPhone?
I am fairly new to swift and was working on a project where I included a text field. When I tested out the app, I noticed that the keyboard return key doesn't work and I am unable to exit the keyboard. Is there a reason why it does this? Can the return key's functionality be implemented through swift?
Also, there is another app I was recently working on that I switched the keyboard of a text field to number pad, and I realize there is no return key on the number pad, so again, I can't seem to figure out how to exit it. How could I fix this?
Sorry, I am pretty new to apple devices as well...
You want to implement UITextFieldDelegate in your view controller:
class ViewController: UIViewController,UITextFieldDelegate //set delegate to class
and then in viewDidLoad set the textField delegate to self.
override func viewDidLoad() {
super.viewDidLoad()
textField.delegate = self
}
You can then add this method which runs when the return key is pressed, and resignFirstResponder which closes the keyboard:
func textFieldShouldReturn(textField: UITextField!) -> Bool { //delegate method
textField.resignFirstResponder()
return true
}
For other newbies like myself, if you still don't have a keyboard on the simulator after following Joe's excellent instructions then go to the Simulator's menu and select Hardware/Keyboard/Toggle Software Keyboard.
Please note that in Swift 4 it seems that the first parameter name of textFieldShouldReturn has to be omitted with an underscore. Elsewise Swift does not call the function:
func textFieldShouldReturn(_ textField: UITextField!) -> Bool { // use "_"
return true;
}
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.
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()
}
I've created a custom UIViewController with one UITextField on Storyboard. On viewDidLoad, I set the UITextFIeld to becomeFirstResponder, nothing happened (no keyboards popped up).
I then tried calling resignFirstResponder(), but it returned false. Next I tried to find who the first responder is through looping all the subviews using the code over # Get the current first responder without using a private API. It turns out none of the sub views are the first responder.
My ViewController in storyboard
My Code
class BLTestViewController: UIViewController, UITextFieldDelegate {
#IBOutlet var tf: UITextField
override func viewDidLoad() {
super.viewDidLoad()
tf.delegate = self
tf.becomeFirstResponder()
// Do any additional setup after loading the view.
}
}
As simple as it gets...WHY ISN'T THE KEYBOARD COMING UP!!! One thing I do have on is auto layout, but I'm not sure if that affects the keyboard popping up.
Swift 4 it worked for me
try it
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
textView.becomeFirstResponder()
}
I just tested it with a textfield by calling self.tf.becomeFirstResponder() indside viewDidLoad() function and its working absolutely fine. You'll need to toggle your keyboard by pressing command + K as nflacco just pointed out and disable the hardware keyboard in the simulator as:
iOS Simulator -> Hardware -> Keyboard
Uncheck "Connect Hardware Keyboard"
I think
class BLTestViewController: UIViewController, UITextFieldDelegate {
#IBOutlet var tf: UITextField
override func viewDidLoad() {
super.viewDidLoad()
tf.delegate = self
self.focustf()
// Do any additional setup after loading the view.
}
func focustf(){
self.tf.becomeFirstResponder()
}
}
Swift 4 and iOS 11
In my case, no mater what I tried, I was not able to set first responder until I tried this.
func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
if cell.isKind(of: YOURTABLEVIEWCELL.self) {
if let yourCell = cell as? YOURTABLEVIEWCELL{
yourCell.yourUiTextField.becomeFirstResponder()
}
}
}
Hope this helps someone stuck with the same problem.
Try setting it after a delay:
DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
textField.becomeFirstResponder()
}
sometimes the wrong is the time in render the view
If you are using the iOS Simulator, press ⌘ command + shift + K to open the keyboard.