I have a pick list to select a day and a text field to show the selected date. It will be like this...
If i choose any date, it will be like this....
The cross symbol in text field is acheived by the code....
textField.clearButtonMode=UITextFieldViewModeAlways;
Now my problem is, while clicking on this cross button, a keyboard was displayed. This is like....
But i want the cross button only for erase the text field. The keyboard should not come. Is it possible?
On your UITextFieldDelegate, implement the method - (BOOL)textFieldShouldBeginEditing:(UITextField *)textField and return NO;
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
return NO;
}
In the textfield's 'Editing did begin' method, add the following:
[UITextField resignFirstResponder];
With this in place, that keyboard won't show up.
Happy coding :)
Try setting the editable property of that textfield to false.
As others have said, you can hide the keyboard through the UITextFieldDelegate protocol and through a [texfField resignFirstResponder] method. Alternatively, as vfn suggested, you can prevent thE keyboard from showing altogether.
For that button though, you are young to want to set the clearButtonMode property of the text field. To see what your available options are, read this: http://developer.apple.com/library/ios/documentation/UIKit/Reference/UITextField_Class/Reference/UITextField.html#//apple_ref/doc/c_ref/UITextFieldViewMode
Related
Is there any way to hide the keyboard when a clear button of UITextField is pressed?
Yes, there is, although I suspect that doing so would violate the Apple Human Interface Guidelines.
To do so, add the following method to your view controller's implementation file. Then make the view controller into your textfield's delegate.
- (BOOL) textFieldShouldClear:(UITextField *)textField{
[textField resignFirstResponder];
return YES;
}
The downside to this approach is if you ever want to prevent the textfield from clearing, your code becomes messy. Instead you might try to define a custom method and then connect it to the valueDidChange method and check for an empty value.
-(IBAction)hideKeyboardFromTextField:(id)sender{
//TODO: Check if the previous value was longer than one character to differentiate
//between backspace and clear.
//check if the editing caused the box to be empty
if([[sender value] isEqualToString:#""] || [sender value] == nil)
[sender resignFirstResponder];
}
}
The problem here is that you can't easily differentiate between a tap on the clear button and a tap on the delete button when there is one character in the UITextField.
As I said in the beginning of my answer, this is not advisable in the first place and as the answers here have shown, it is not so easy to implement. I don't think it's worth the hassle, considering the difficulty involved and the fact that it doesn't result in optimal user experience.
This code is definitely working for me to hide the key board while clearing out the content of the textfield
- (BOOL)textFieldShouldClear:(UITextField *)textField
{
textField.text = #"";
return NO;
}
Yep. Call resignFirstResponder on the text field in the delegate's textFieldShouldClear: method.
In UITextFieldDelegate
- (BOOL)textFieldShouldClear:(UITextField *)textField {
[textField resignFirstResponder];
return YES;
}
But there is a problem with this. From the manual, "The text field calls this method in response to the user pressing the built-in clear button. (This button is not shown by default but can be enabled by changing the value in the clearButtonMode property of the text field.) This method is also called when editing begins and the clearsOnBeginEditing property of the text field is set to YES."
Note that, this method is called when editing begins if clearsOnBeginEditing is set to YES. So if you call resignFirstResponder in this method then editing will not begin actually. So you need to set clearsOnBeginEditing to NO. Obviously then the text field won't be cleared when editing begins.
Another IMPORTANT matter not directly related to the question. Hiding the keypad after tapping clear button is not a familiar behavior and Apple does NOT like changing the behavior of standard items. You may get a rejection for this.
Try this code:
[TextField performSelector:#selector(resignFirstResponder) withObject:nil afterDelay:0.1];
For Swift
In your UITextFieldDelegate
func textFieldShouldClear(_ textField: UITextField) -> Bool {
textField.resignFirstResponse()
return true
}
I have a regular text field on a view and I'd like to make use of the search button on the iPhones keyboard. For the life of me, I can't figure out how to do this. There doesn't seem to be any event exposed that I can wire up that specifically relates to the search button on the keyboard. I've googled around, but I also haven't found anything related to this subject.
Make the keyboard display the blue "Search" button by setting the return key type.
myTextField.returnKeyType = UIReturnKeySearch;
Set the delegate of your text field to your controller and implement the 'textFieldShouldReturn:' method.
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
[textField resignFirstResponder];
/* Do some searching here */
return YES;
}
I have a table and in one of the cells I keep a UITextView. When the user taps it the keyboard appears. I was trying various ways to get rid of it. My first approach was to detect a tap on the table cell of the UITextView, but since the text view takes most of it, it's not suitable. Then I tried to add a button to the toolbar and whenever the user presses it, the keybord disappears with resignFirstResponder, but it won't work. It seems that only when I'm in the same view as the UITextView resignFirstResponder works. So how can I get rid of the keyboard from a different view?
Thanks.
The method below uses the Return Key to dismiss the UITextView Keyboard.
In your Controller, set the UITextView's Delegate to self
like this:
myTextView.delegate=self;
Then add this method:
- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range
replacementText:(NSString *)text
{
// Any new character added is passed in as the "text" parameter
if ([text isEqualToString:#"\n"]) {
// Be sure to test for equality using the "isEqualToString" message
[textView resignFirstResponder];
// Return FALSE so that the final '\n' character doesn't get added
return FALSE;
}
// For any other character return TRUE so that the text gets added to the view
return TRUE;
}
This should work if you're not using the Return key as a true Return key (e.g. adding new line).
What do you mean "it won't work". If txtView is your UITe4xtView, do you mean that associating the button with an action that has [txtView resignFirstResponder] wont work? I've used this code before and it works for me
Without knowing the size of the controls, nor the intent, it's a bit hard to make a solid recommendation. However, if you're looking for a read-only text view, why not consider a UILabel? If it's going to contain a great deal of read-only text and you need rich formatting, consider a UIWebView with your formatting.
Of course, this answer could be completely inappropriate. Can you clarify your intentions, maybe show a screen shot of the app-in-progress (untapped, of course)?
try unchecking the 'Editable' option in the Text View Attributes window in Interface Builder.
this stops the keyboard from showing up if the user clicks on your TextView
i've use for that kind of problem, the folowing method
- (BOOL)textFieldShouldReturn: tf_some_text_field {
[tf_some_text_field resignFirstResponder];
[tf_another_text_field_in_the_same_view resignFirstResponder];
return YES;
}
hope it helps...
Is there a way to prevent the user from moving the cursor in a UITextField? I'd like it to stay at the end of the string.
This is an old question, but I was looking for an answer to the same question, and found a solution.
It is actually quite simple to prevent the user from moving the cursor. Just subclass UITextField and provide the following implementation of caretRectForPosition:
- (CGRect)caretRectForPosition:(UITextPosition *)position
{
return [super caretRectForPosition:self.endOfDocument];
}
NO SUBCLASS needed.
You Could use UITextFieldDelegate. It will make disable magnifying glass & text selection.
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
textField.userInteractionEnabled = NO;
return YES;
}
- (void)textFieldDidEndEditing:(UITextField *)textField {
textField.userInteractionEnabled = YES;
}
NB: This is just a bypass.
There's no way to prevent them from moving the cursor. You can, however, prevent them from editing the text except at the end by implementing the
– textField:shouldChangeCharactersInRange:replacementString:
method in your text field's delegate.
Edit: you can also set userInteractionEnabled to NO so that the user can't tap the field. Call becomeFirstResponder manually so that the field gets focus since the user can't tap to focus.
I'd suggest to check the gestureRecognizers property.
You will find a lot of them in the array and might want to either remove them all or to find the ones that triggers the event you want to intercept and remove/replace it.
I used it to remove copy/paste and magnifying glass functionalities from an UITextField
I haven't check if you can disable the magnifying glass, but the recommended way to selectively disable editing behavior in a UIResponder (and thus a UITextField) is to implement canPerformAction:withSender of UIResponder.
See UIResponder documentation.
Maybe if you return "NO" for the select and selectAll action you can disable it.
Another, more brutal, way is to intercept any touch event and reset the cursor to the end.
I have a UISearchBar and on the delegate method I hide the keyboard when the text field is cleared:
- (void)searchBar:(UISearchBar *)filterBar textDidChange:(NSString *)filterText {
NSLog(#"filter: %#", filterText);
if ([filterText length] == 0) {
NSLog(#"hiding keyboard");
[filterBar resignFirstResponder ];
Now when I use the backspace button to clear out the search term all is good. The keyboard hides when the search turns to empty. Not so when I am pressing the "cross" button to clear out the search field altogether.
Well, not entirely true. I does call resignFirstResponder and hides the keyboard - you just can't see it because it comes right back up. I found this out by observing the keyboard show/hide events.
So how come the keyboard is shown again? How can I prevent this?
I've already tried to walk all subviews of the UISearchBar and also call resignFirstResponder on those ...but unless I did something wrong - that doesn't solve this either.
Update:
In fact I just got the keyboard to not disable the "Done" button :-D ...so I will "stop" going down that road as Kevin suggested. Still I would like to know why the keyboard came back up like this.
I would suggest you stop trying to do this. Hiding the keyboard when the field empties out is completely non-standard behavior and the user won't expect it. In situations like this it's far better to keep your behavior consistent with all the rest of the apps across the system.
I see you've accepted an answer and don't plan to continue in this vein, but I am curious whether you could achieve something like you wanted by implementing this:
- (BOOL)canBecomeFirstResponder
{
return !preventingKeyboardAppearance; // so to speak
}
- (void)searchBar:(UISearchBar *)filterBar textDidChange:(NSString *)filterText
{
// handle text
preventingKeyboardAppearance = YES;
[filterBar resignFirstResponder];
}
I'm not clear under what circumstances you would set preventingKeyboardAppearance back to NO, but I do wonder if this would work.
I basically agree with Kevin, but that doesn't help you so here goes:
Try looping through the subviews of the searchbar and find the sibling which is of the class UITextField. Then either set the delegate property of this text field to your ViewController's class and handle the callback there (e.g. textViewShouldReturn), or simply call resignFirstResponder directly on the text field. The former obviously needs to be done at init/load time while the latter can be done in your existing textDidChange callback.
Here are some more pointers:
http://discussions.apple.com/thread.jspa?threadID=1479468&tstart=0
http://discussions.apple.com/thread.jspa?messageID=8176608
-(BOOL)textFieldShouldReturn:(UITextField *)textField {
[textField resignFirstResponder];
return YES;
}
[textField resignFirstResponder] is not working some time so use this
[YorTextFieldName resignFirstResponder] it's working correctly not any other
function for hiding key bord