I use this to center a text field over something relevant:
[textField setCenter:[someObject center]];
[textField becomeFirstResponder];
This looks great, nice and centered over the object, ready to accept text. I'd like the text formated a certain way, so in the editing changed handler, I revise the text and set to the new text:
[textField setText:newText];
When I do this, the text field will jump to its the old position, from before it was centered. I'd like the text field to stay centered over the object.
My experience is that there is likely a better way to do this, i.e. move the text field and dynamically change its contents, without have to work around various quirks. Any advice?
For Formatting the UITextField while editing you can try out the following code.
-(BOOL) textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string{
if([string isEqualToString:#"4"]){
UITextRange *range=textField.selectedTextRange;
[textField replaceRange:range withText:#"Hi"];
return NO;
}
return YES;
}
I have kept UITextfield with centre alignment. When it detects "4" at the start,centre or any where, it will replace it with "Hi",while maintaining it's centre align behaviour.
In addition to the code above, used the following to replace the existing text:
UITextPosition *p0 = [textField beginningOfDocument];
UITextPosition *p1 = [textField positionFromPosition:p0 offset:[[textField text] length]];
UITextRange *complete = [textField textRangeFromPosition:p0 toPosition:p1];
[textField replaceRange:complete withText:newText];
Ghastly solution for what should be an easy task!
Related
Say I have a fixed size UITextfield, I want to "display" the associated text starting from the n-th character.
E.g:
Normal UITextField with text set to 'Hello World'
*************
*HELLO WORLD*
*************
What I want, n-th=4:
*************
*LO WORLD *
*************
Some notes:
I don't want to modify the UITextfield's text (say: deleting the missing characters), the idea is that the whole text should be there, but the "focus" moved few characters forward.
You will need to set the UITextPosition when the textfield begins editing like this:
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
UITextPosition *beginning = [textField beginningOfDocument];
[textField setSelectedTextRange:[textField textRangeFromPosition:beginning
toPosition:beginning]];
}
Just set the UITextPosition for whatever index of the textfield's text that you where you would like the cursor to be.
I’m using a custom font in a UITextField, which has secureTextEntry turned on. When I’m typing in the cell, I see the bullets in my chosen font, but when the field loses focus, those bullets revert to the system standard font. If I tap the field again, they change back to my font, and so on.
Is there a way I can ensure that they continue to display the custom font’s bullets, even when the field is out of focus?
A subclass that works this issue around. Create an arbitrary UITextField, then set the secure property to YES (via KVC in IB).
Actually it implements a comment suggested by lukech. When textfield ends editing, it switches to an arbitrary textfield, then set a bulk of dots into, and some hack in text accessor to always get the actual text the field holds.
#interface SecureTextFieldWithCustomFont : UITextField
#property (nonatomic) BOOL secure;
#property (nonatomic, strong) NSString *actualText;
#end
#implementation SecureTextFieldWithCustomFont
-(void)awakeFromNib
{
[super awakeFromNib];
if (self.secureTextEntry)
{
// Listen for changes.
[self addTarget:self action:#selector(editingDidBegin) forControlEvents:UIControlEventEditingDidBegin];
[self addTarget:self action:#selector(editingDidChange) forControlEvents:UIControlEventEditingChanged];
[self addTarget:self action:#selector(editingDidFinish) forControlEvents:UIControlEventEditingDidEnd];
}
}
-(NSString*)text
{
if (self.editing || self.secure == NO)
{ return [super text]; }
else
{ return self.actualText; }
}
-(void)editingDidBegin
{
self.secureTextEntry = YES;
self.text = self.actualText;
}
-(void)editingDidChange
{ self.actualText = self.text; }
-(void)editingDidFinish
{
self.secureTextEntry = NO;
self.actualText = self.text;
self.text = [self dotPlaceholder];
}
-(NSString*)dotPlaceholder
{
int index = 0;
NSMutableString *dots = #"".mutableCopy;
while (index < self.text.length)
{ [dots appendString:#"•"]; index++; }
return dots;
}
#end
May be augmented to work with non NIB instantiations, handling default values, etc, but you probably get the idea.
For those having trouble with losing custom fonts when toggling secureTextEntry, I found a work-around (I'm using the iOS 8.4 SDK). I was trying to make a toggle for showing/hiding a password in a UITextField. Every time I'd toggle secureTextEntry = NO my custom font got borked, and only the last character showed the correct font. Something funky is definitely going on with this, but here's my solution:
-(void)showPassword {
[self.textField resignFirstResponder];
self.textField.secureTextEntry = NO;
}
First responder needs to be resigned for some reason. You don't seem to need to resign the first responder when setting secureTextEntry to YES, only when setting to NO.
The actual problem appears to be that the editing view (UITextField does not draw its own text while editing) uses bullets (U+2022) to draw redacted characters, while UITextField uses black circles (U+25CF). I suppose that in the default fonts, these characters look the same.
Here's an alternate workaround for anyone interested, which uses a custom text field subclass, but doesn't require juggling the text property or other special configuration. IMO, this keeps things relatively clean.
#interface MyTextField : UITextField
#end
#implementation MyTextField
- (void)drawTextInRect:(CGRect)rect
{
if (self.isSecureTextEntry)
{
NSMutableParagraphStyle *paragraphStyle = [NSMutableParagraphStyle new];
paragraphStyle.alignment = self.textAlignment;
NSMutableDictionary *attributes = [NSMutableDictionary dictionary];
[attributes setValue:self.font forKey:NSFontAttributeName];
[attributes setValue:self.textColor forKey:NSForegroundColorAttributeName];
[attributes setValue:paragraphStyle forKey:NSParagraphStyleAttributeName];
CGSize textSize = [self.text sizeWithAttributes:attributes];
rect = CGRectInset(rect, 0, (CGRectGetHeight(rect) - textSize.height) * 0.5);
rect.origin.y = floorf(rect.origin.y);
NSMutableString *redactedText = [NSMutableString new];
while (redactedText.length < self.text.length)
{
[redactedText appendString:#"\u2022"];
}
[redactedText drawInRect:rect withAttributes:attributes];
}
else
{
[super drawTextInRect:rect];
}
}
#end
While this is an iOS bug (and new in iOS 7, I should add), I do have another way to work around it that one might find acceptable. The functionality is still slightly degraded but not by much.
Basically, the idea is to set the font to the default font family/style whenever the field has something entered in it; but when nothing is entered, set it to your custom font. (The font size can be left alone, as it's the family/style, not the size, that is buggy.) Trap every change of the field's value and set the font accordingly at that time. Then the faint "hint" text when nothing is entered has the font that you want (custom); but when anything is entered (whether you are editing or not) will use default (Helvetica). Since bullets are bullets, this should look fine.
The one downside is that the characters, as you type before being replaced by bullets, will use default font (Helvetica). That's only for a split second per character though. If that is acceptable, then this solution works.
I found a trick for this issue.
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
if ([textField tag]== TAG_PASS || [textField tag]== TAG_CPASS)
{
// To fix password dot size
if ([[textField text] isEqualToString:#"" ])
{
[textField setText:#" "];
[textField resignFirstResponder];
[textField becomeFirstResponder];
[textField setText:#""];
}
}
}
[passWordTextField resignFirstResponder];
passWordTextField.secureTextEntry = !passWordTextField.secureTextEntry;
[passWordTextField becomeFirstResponder];
This is the fastest way to solve this bug！
iOS is acting a bit strange when it comes to custom fonts. Try removing "Adjust to Fit" for that textfield. If that doesn't work, I'm guessing that what bothering you is the size increase of the font.
A simple solution for that would be:
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
if(textField.secureTextEntry)
{
[textField setFont:[UIFont fontWithName:#"Helvetica-Bold" size:10.0]];
}
}
-(void)textFieldDidEndEditing:(UITextField *)textField
{
if(textField.secureTextEntry)
{
[textField setFont:[UIFont fontWithName:#"Helvetica-Bold" size:10.0]];
}
}
You'll need to play with the size a bit in order for it to look like there is no size change when loosing focus on the UITextField.
If you have a major spacing problem between characters like in the edited question, the simplest (and a bit ugly) solution would be to create a Bullet image that matches the above size & spacing and matches the amount of characters entered by the user that will appear when the user leaves the UITextField.
A secureTextEntry text field can be avoided altogether:
NSString *pin = #"";
BOOL pasting = FALSE;
-(BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
if(!pasting) {
pin = [pin stringByReplacingCharactersInRange:range withString:string];
// Bail out when deleting a character
if([string length] == 0) {
return YES;
}
pasting = TRUE;
[textField paste:#"●"];
return NO;
} else {
pasting = FALSE;
return YES;
}
}
I recommend to resignFirstResponder before you change scureTextEntry and then becomeFirstResponder again as it is posted here: https://stackoverflow.com/a/34777286/1151916
Swift 5 and iOS 14 is around but isSecureTextEntry set to true for custom font still displays the wrong size bullets, although the actual leading letter is of the correct size.
None of the solutions from stack overflow has worked for me except a hacky workaround of setting the font to the system font when password is in secure mode.
if textField.isSecureTextEntry {
self.textField.font = UIFont.systemFont(ofSize: 17)
} else {
self.textField.font = UIFont(name: "Roboto-Regular", size: 17)
}
I’m using a custom font in a UITextField, which has secureTextEntry turned on. When I’m typing in the cell, I see the bullets in my chosen font, but when the field loses focus, those bullets revert to the system standard font. If I tap the field again, they change back to my font, and so on.
Is there a way I can ensure that they continue to display the custom font’s bullets, even when the field is out of focus?
A subclass that works this issue around. Create an arbitrary UITextField, then set the secure property to YES (via KVC in IB).
Actually it implements a comment suggested by lukech. When textfield ends editing, it switches to an arbitrary textfield, then set a bulk of dots into, and some hack in text accessor to always get the actual text the field holds.
#interface SecureTextFieldWithCustomFont : UITextField
#property (nonatomic) BOOL secure;
#property (nonatomic, strong) NSString *actualText;
#end
#implementation SecureTextFieldWithCustomFont
-(void)awakeFromNib
{
[super awakeFromNib];
if (self.secureTextEntry)
{
// Listen for changes.
[self addTarget:self action:#selector(editingDidBegin) forControlEvents:UIControlEventEditingDidBegin];
[self addTarget:self action:#selector(editingDidChange) forControlEvents:UIControlEventEditingChanged];
[self addTarget:self action:#selector(editingDidFinish) forControlEvents:UIControlEventEditingDidEnd];
}
}
-(NSString*)text
{
if (self.editing || self.secure == NO)
{ return [super text]; }
else
{ return self.actualText; }
}
-(void)editingDidBegin
{
self.secureTextEntry = YES;
self.text = self.actualText;
}
-(void)editingDidChange
{ self.actualText = self.text; }
-(void)editingDidFinish
{
self.secureTextEntry = NO;
self.actualText = self.text;
self.text = [self dotPlaceholder];
}
-(NSString*)dotPlaceholder
{
int index = 0;
NSMutableString *dots = #"".mutableCopy;
while (index < self.text.length)
{ [dots appendString:#"•"]; index++; }
return dots;
}
#end
May be augmented to work with non NIB instantiations, handling default values, etc, but you probably get the idea.
For those having trouble with losing custom fonts when toggling secureTextEntry, I found a work-around (I'm using the iOS 8.4 SDK). I was trying to make a toggle for showing/hiding a password in a UITextField. Every time I'd toggle secureTextEntry = NO my custom font got borked, and only the last character showed the correct font. Something funky is definitely going on with this, but here's my solution:
-(void)showPassword {
[self.textField resignFirstResponder];
self.textField.secureTextEntry = NO;
}
First responder needs to be resigned for some reason. You don't seem to need to resign the first responder when setting secureTextEntry to YES, only when setting to NO.
The actual problem appears to be that the editing view (UITextField does not draw its own text while editing) uses bullets (U+2022) to draw redacted characters, while UITextField uses black circles (U+25CF). I suppose that in the default fonts, these characters look the same.
Here's an alternate workaround for anyone interested, which uses a custom text field subclass, but doesn't require juggling the text property or other special configuration. IMO, this keeps things relatively clean.
#interface MyTextField : UITextField
#end
#implementation MyTextField
- (void)drawTextInRect:(CGRect)rect
{
if (self.isSecureTextEntry)
{
NSMutableParagraphStyle *paragraphStyle = [NSMutableParagraphStyle new];
paragraphStyle.alignment = self.textAlignment;
NSMutableDictionary *attributes = [NSMutableDictionary dictionary];
[attributes setValue:self.font forKey:NSFontAttributeName];
[attributes setValue:self.textColor forKey:NSForegroundColorAttributeName];
[attributes setValue:paragraphStyle forKey:NSParagraphStyleAttributeName];
CGSize textSize = [self.text sizeWithAttributes:attributes];
rect = CGRectInset(rect, 0, (CGRectGetHeight(rect) - textSize.height) * 0.5);
rect.origin.y = floorf(rect.origin.y);
NSMutableString *redactedText = [NSMutableString new];
while (redactedText.length < self.text.length)
{
[redactedText appendString:#"\u2022"];
}
[redactedText drawInRect:rect withAttributes:attributes];
}
else
{
[super drawTextInRect:rect];
}
}
#end
While this is an iOS bug (and new in iOS 7, I should add), I do have another way to work around it that one might find acceptable. The functionality is still slightly degraded but not by much.
Basically, the idea is to set the font to the default font family/style whenever the field has something entered in it; but when nothing is entered, set it to your custom font. (The font size can be left alone, as it's the family/style, not the size, that is buggy.) Trap every change of the field's value and set the font accordingly at that time. Then the faint "hint" text when nothing is entered has the font that you want (custom); but when anything is entered (whether you are editing or not) will use default (Helvetica). Since bullets are bullets, this should look fine.
The one downside is that the characters, as you type before being replaced by bullets, will use default font (Helvetica). That's only for a split second per character though. If that is acceptable, then this solution works.
I found a trick for this issue.
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
if ([textField tag]== TAG_PASS || [textField tag]== TAG_CPASS)
{
// To fix password dot size
if ([[textField text] isEqualToString:#"" ])
{
[textField setText:#" "];
[textField resignFirstResponder];
[textField becomeFirstResponder];
[textField setText:#""];
}
}
}
[passWordTextField resignFirstResponder];
passWordTextField.secureTextEntry = !passWordTextField.secureTextEntry;
[passWordTextField becomeFirstResponder];
This is the fastest way to solve this bug！
iOS is acting a bit strange when it comes to custom fonts. Try removing "Adjust to Fit" for that textfield. If that doesn't work, I'm guessing that what bothering you is the size increase of the font.
A simple solution for that would be:
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
if(textField.secureTextEntry)
{
[textField setFont:[UIFont fontWithName:#"Helvetica-Bold" size:10.0]];
}
}
-(void)textFieldDidEndEditing:(UITextField *)textField
{
if(textField.secureTextEntry)
{
[textField setFont:[UIFont fontWithName:#"Helvetica-Bold" size:10.0]];
}
}
You'll need to play with the size a bit in order for it to look like there is no size change when loosing focus on the UITextField.
If you have a major spacing problem between characters like in the edited question, the simplest (and a bit ugly) solution would be to create a Bullet image that matches the above size & spacing and matches the amount of characters entered by the user that will appear when the user leaves the UITextField.
A secureTextEntry text field can be avoided altogether:
NSString *pin = #"";
BOOL pasting = FALSE;
-(BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
if(!pasting) {
pin = [pin stringByReplacingCharactersInRange:range withString:string];
// Bail out when deleting a character
if([string length] == 0) {
return YES;
}
pasting = TRUE;
[textField paste:#"●"];
return NO;
} else {
pasting = FALSE;
return YES;
}
}
I recommend to resignFirstResponder before you change scureTextEntry and then becomeFirstResponder again as it is posted here: https://stackoverflow.com/a/34777286/1151916
Swift 5 and iOS 14 is around but isSecureTextEntry set to true for custom font still displays the wrong size bullets, although the actual leading letter is of the correct size.
None of the solutions from stack overflow has worked for me except a hacky workaround of setting the font to the system font when password is in secure mode.
if textField.isSecureTextEntry {
self.textField.font = UIFont.systemFont(ofSize: 17)
} else {
self.textField.font = UIFont(name: "Roboto-Regular", size: 17)
}
I have a UITextField that is a password field declared by using
passwordField.secureTextEntry = YES;
My issue is that when I type half my password, click on a different component, and come back to the passwordField and start typing again, iOS clears the existing text.
Is there a way to prevent this from happening or turn it off?
-Henry
Simplest way to do this is to implement delegate for UITextField with a code similar to this:
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)replacementString {
if (textField.text) {
textField.text = [textField.text stringByReplacingCharactersInRange:range withString:replacementString];
} else {
textField.text = replacementString;
}
return NO;
}
By default, no, you can't do it for secure text fields. You can work around it though.
Implement the delegate method textField:shouldChangeCharactersInRange:replacementString: and use the values passed to decide what to do.
i.e. if the range is the entire string and the replacement is an empty string, don't allow the change. The new text might be provided as the newly typed character, you'll need to check what parameters the method actually receives.
Well I have the same situation when I was changing keyboard type to make my password combo of 4(digits)+1(alpha), to stop clearing secureTextEntry,
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
textField.keyboardType = UIKeyboardTypePhonePad;
[textField reloadInputViews];
return YES;
}
It reloads UITextField but not its text, so without clearing text it changed the keyboard from alpha to numeric vice versa. You can use it for your own functionality.
I have some UITextFields and one button, Can anyone tell me how to make both textfields (first Street Address field and Street Address field below Same As Above button) content equal at the same time if my button (Same As Above) is checked (I m using a boolean variable isSameAsAboveChecked on button click and making value Yes and No on respective actions).
Means If Same As Above button is checked, and i m writing something in First Street Address textfield then at the same time content of Second Street Address text field should start changing. and same for all the other fields.
Thnaks in advance.
Set both textfield.delegate =self
I just tried with :
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
self.yourSecondField.text=self.yourFirstField.text;
return YES;
}
Issue: If First field has been entered as say "XYZA" , second field has just "XYZ", maybe someone can edit this answer or give a better one.
Use this delegate method
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string{
NSString * toBeString = [textField.text stringByReplacingCharactersInRange:range
withString:string];
text2Field.text = toBeString;
return YES;
}
In it first set the entered text to other textField and then return YES
Dont forget to return yes,
for this functionality use this code
-(BOOL)textFieldShouldReturn:(UITextField *)textField{
if (textField == street_Address) {
if (check_box) {
street_address.text=street_Address.text;
}
else
[street_Address resignFirstResponder ];}
similarly u apply for rest of other fields. First u check ur check box is enable or not. if enable then pass the value to below text fileds otherwise resign current text field.