I am trying to show a UITextField on top of the iPad keyboard.
I was able to get the height of the keyboard when it was presented with the notification.
However, in iPad, by change the language input of the keyboard -> most likely to Japanese, the height of the keyboard changed because a text-hypothesis area was shown on top of the keyboard, that caused my UITextfield hidden by that area....
Does anybody know how can I get the height changed notification or any other way?
The answer is that when you switch languages, the UIKeyboardDidShowNotification fires for each change, so you always get the updated height.
See my answer here on how to set up responses to the showing and hiding, and getting the height.
Swift
The UIKeyboardDidShowNotification won't fire anymore the keyboard size change.
Use UIKeyboardWillChangeFrameNotification instead:
NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(instance.keyboardWillChange(_:)), name:UIKeyboardWillChangeFrameNotification, object: nil)
at the function:
let targetSize = (notification.userInfo?[UIKeyboardFrameEndUserInfoKey] as? NSValue)?.CGRectValue()
Important: this event will be fired also when keyboard will open and will hide, can replace both UIKeyboardWillShowNotification and UIKeyboardWillHideNotification if only sizes are needed
Related
First of all , my project is so structured:
-home page with a tableView to add element
-floating Button: when clicked make appear keyboard with above a custom view (and inside a textView) to digit input
Now, I have a problem with inputAccessoryView and dismiss keyboard:
I have used inputAccessoryView to move a custom view above the keyboard like this:
MytextView.inputAccessoryView= MyContainerView;
And this work correctly.
My problem occur when I dismiss keyboard using:
[MytextView resignFirstResponder];
The keyboard and relative inputView disappear properly but After when I try again to make MytextView the firstResponder does not work (the keyboard not appear).
I hypothesize that occurs because textView is hide with inputAccessoryView under the screen and inputAccessoryView change The inizial position of textview (Initial in the Middle of the screen); so textView is not focusable and keyboard not appear when I use:
[MyTextView becomeFirstResponder]
Is there a way to reposition programmatically the textView to initial position (middle of the screen) so can become focusable when I call becomeFirstResponder?
Or is there a way to fix inputAccessoryView in the safe area when i dismiss keyboard?
(Sorry , I’m New to objective-c and IOS)
Thanks!
Let me jump out of the comments to have more freedom. Based on your description you could do something like this
- (void) viewDidLoad
{
super.viewDidLoad;
[NSNotificationCenter.defaultCenter addObserver:self
selector:#selector( keyboardDidHide: )
name:UIKeyboardDidHideNotification
object:nil];
}
- ( void ) keyboardDidHide:( NSNotification * ) notification
{
... do stuff here...
}
Then you can reposition or do whatever you need in there. Alternatively, you can also listen for UIKeyboardDidShowNotification and do preparatory stuff there. In fact, there is a whole family of UIKeyboard... notifications that you could use this way and I hope it helps.
EDIT
Here is something else, if you ever need to reposition based on the keyboard size.
- ( void ) keyboardDidShow:(NSNotification *)notification
{
NSDictionary * info = notification.userInfo;
CGRect kbRect = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue];
... do stuff with kbRect ...
}
have you tried to use
[self.view endEditing:YES]
to dismiss the input view?
I never get any issue to set any input to firstResponder after I trigger that code.
I have a screen with various elements, including a UITextField, and I want to show coach marks on the screen (I'm using the Instructions library). However, I need to freeze interactions with the elements when the coach marks are displayed (so the user can't type stuff in the text field, for example).
My problem is with the keyboard (which is always displayed in this screen): if I just set the text field's isEnabled property to false, or set isUserInteractionEnabled = false, the field resigns first responder and the keyboard disappears, which is unnatural for this screen. If, however, I use the textField:shouldChangeCharactersIn range: delegate method and return false, the keyboard remains visible, but enabled. So when the coach marks appear, the user can tap around the keyboard. While this has no effect on the text field, it's still weird and annoying.
So how do I temporarily keep the keyboard up, but have it disabled (preferably behind the coach marks blur view)? I saw this, but that doesn't provide a solution that I think Apple would accept.
Thanks,
Yariv.
You can add a UIButton dynamically when the keyboard is visible. You can add keyboardDidShow & keyboardDidHide observer to know when the keyboard is up and visible.
You might face a problem related to keyboard being top most on screen but, you can deal with it by making the newly added UIButton the top most on your current view/window.
Don't forget to set userInteractionEnabled to false for that UIButton
Comment to your question by #MikeAlter would be the best (and clean) solution. But, that also means that you don't have any control with navigating/interacting to other controls on your screen.
EDIT
Keyboard has specific region on screen covered when shown. My solution suggested that you can add a UIButton on your view with the exact rectangle/frame same as of keyboard. A view/button that covers the keyboard overall. So, your keyboard will not take any user interaction.
The following code can get you size of keyboard. You can add a UIButton of same size in exactly same place which will make your keyboard inactive as user interaction will be taken care by the button itself.
- (void)keyboardDidShow:(NSNotification *)notification {
CGSize keyboardSize = [[[notification userInfo] objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
int height = MIN(keyboardSize.height,keyboardSize.width);
int width = MAX(keyboardSize.height,keyboardSize.width);
... Add UIButton here with the CGRect of keyboard
}
You need to register to UIKeyboardDidShowNotification for above to work, like following:
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardDidShow:)
name:UIKeyboardDidShowNotification
object:nil];
If you want to make keyboard behind coach marks blur view then add coach marks blur view to last window:
UIApplication.shared.windows.last?.addSubview(coachMarksBlurView)
UIApplication.shared.keyWindow?.bringSubview(toFront: coachMarksBlurView)
And if you want to block keyboard you can use these two functions:
func addBlockView(){
view.addSubview(viewBlock)
viewBlock.frame = CGRect.init(x: 0, y: 0, w:
UIScreen.main.bounds.size.width, h:
UIScreen.main.bounds.size.height)
viewBlock.backgroundColor = UIColor.clear
UIApplication.shared.windows.last?.addSubview(viewBlock)
UIApplication.shared.keyWindow?.bringSubview(toFront: viewBlock)
}
func removeBlockView(){
viewBlock.removeFromSuperview()
}
Short video of what happens when tapping on a textView:
https://www.youtube.com/watch?v=LG_r3iDJKiM
I'm trying to show my custom keyboard on a UITextView from the textViewDidBeginEditing function, The custom keyboard has been tested on UITextFields and is working as intended. Now I'm trying to get the same keyboard to work with UITextViews.
When opening the app for the first time, and tapping on a textView the first time will have this behavior, then when we tap on other textViews the custom keyboard is there directly as intended.
the Current code in my TextViewDidBeginEditing, I tried changing the order of the last 4 lines but with no success:
public func textViewDidBeginEditing(_ textView: UITextView) {
keyboard = Keyboard.sharedInstance.keyboardWithType(availableKeyboards.numbers.rawValue, returnKey:textView.returnKeyType, isSecure: false,decimalSeparator:self.decimalSeparatorCharacter, responderClass: self)
inputView.keyboardAppearance = .dark
inputView.hideAssistantBar()
inputView.inputView = keyboard
inputView.reloadInputViews()
}
This will result in the video above, I tried some other ways but no success yet:
Setting a empty UIView as the inputView, this will still result in the apple keyboard shortly appearing
let view:UIView = UIView()
textView.inputView = view
also tried doing reloadInputViews but that doesn't work either:
textView.reloadInputViews()
also tried running it all on the main tread with
DispatchQueue.main.async { }
but no success, I cannot understand why even setting a UIView() as the inputView will still shortly show the apple keyboard. Any help in the right direction would be greatly appreciated!
Thanks in advance!
I am developing an iPhone app in which I have to show some customize picker in case of a button event. But I don't want to hard coded values for the frame of my custom pickerView. I searched and found keyboardWillShow notification userInfo method, but in my case I am not showing keyboard so can't get frame out of it. Can anybody help me way out for getting keyboard frame that I can use for my customize picker?
You can use a UITextField and call becomeFirstResponder and immediately resignFirstResponder on it, so it will be shown and hidden without actually seeing the keyboard.
the action method of the button will look like the following:
#IBAction func showPickerView(sender: AnyObject)
{
let textField = UITextField()
view.addSubview(textField)
textField.becomeFirstResponder()
textField.resignFirstResponder()
textField.removeFromSuperview()
}
And you could listen to the notification and get the height.
for further information: Get height of iOS keyboard without UIKeyboardWillShowNotification
How can I check if the keyboard is blocking my view?
I have UIButton that is in the centre of the screen. I also have a UITextfield that makes the keyboard appears. When I run the app on iPhone 4 the keyboard block the button, but on other models, it doesn't. I have a method that scrolls up the view when the keyboard appears. But I only want to scroll up in case the view is blocked. I can check the model of the iPhone and then decide if to scroll or not, but I thought checking if the Button is blocked would be better. How can I do it?
I solved this problem in an app like so:
Embed the UI for that screen in a UIScrollView, but configure it so that scrolling is not enabled (scrollEnabled property from code, checkbox if you're using a storyboard).
When the keyboard notification is received, get the frame from the button, then call scrollRectToVisible:animated: on the scroll view. It'll move the content the minimum amount necessary to make the button visible, which will be not at all if the screen is big enough.
Using the UIKeyboardWillShowNotification, you can get the height of the keyboard like this:
NSValue *keyboardRect = [notification.userInfo objectForKey:UIKeyboardFrameBeginUserInfoKey];
CGFloat keyboardHeight = MIN(keyboardRect.CGRectValue.size.width, keyboardRect.CGRectValue.size.height);
The get the relevant "lowest" point of your button. (like buttonMaxY = CGRectGetMaxY(yourButton.frame)).
Use the scroll methods you have implemented, but scroll only if necessary: keyboardHeight+buttonMaxY > the height of the screen.
When keyboard is about to appear, a UIKeyboardWillShowNotification notification is posted with the frame of the keyboard. You can calculate and see if the text field frame intersects with the keyboard frame, and scroll.
See documentation on keyboard notifications here.
Following Leo Natan's explanation, you can try something like:
func keyboardWillShow(notification: Notification) {
guard let keyboardFrame = notification.userInfo?[UIKeyboardFrameEndUserInfoKey] as? CGRect,
let viewFrame = myView.frame else {
log.error("I cannot calculate keyboard & view frame")
return
}
if keyboardFrame.intersects(viewFrame) {
// view covered by Keyboard
}
}
pay attention to use UIKeyboardFrameEndUserInfoKey, you can check this link for further details.