I need my user to input some data like DF-DJSL so I put this in the code:
theTextField.autocapitalizationType = UITextAutocapitalizationTypeAllCharacters;
But unfortunately what happens is the first to letter type in CAPS but then letter immediately after typing the hyphen will be in lower case and then the rest return to CAPS therefore producing output like this (unless the user manually taps the shift button after typing a hyphen): DF-dJSL
How can I fix this?
Many Thanks
You don't mention which SDK you're using, but against 3.0 and above I see your desired behaviour.
That said, you could always change the text to upper case when they finish editing using the textFieldDidEndEditing method from the delegate:
- (void)textFieldDidEndEditing:(UITextField *)textField {
NSString *textToUpper = [textField.text uppercaseString];
[theTextField setText:textToUpper];
}
Or, by setting up a notification on the textfield when it changes, you could change the text as it is being typed:
// setup the UITextField
{
theTextField.delegate = self;
theTextField.autocapitalizationType = UITextAutocapitalizationTypeAllCharacters;
[theTextField addTarget:self action:#selector(textFieldDidChange:) forControlEvents:UIControlEventEditingChanged];
}
You have to do it this way since, unlike UISearchBar, UITextField doesn't implement textDidChange. Something like this, perhaps?
- (void)textFieldDidChange:(UITextField *)textField {
NSRange range = [textField.text rangeOfString : #"-"];
if (range.location != NSNotFound) {
theTextField.autocapitalizationType = UITextAutocapitalizationTypeAllCharacters;
}
}
Related
I create on application and i required to enter price. client required its own design keyboard so i develop following keyboard. it works perfect . Problem is when the text is larger then UITextField's with then it display dots. I search on google and SO but not found any thing.
how to avoid dots next to a uitextfield
How to remove dots in UITextfield? and other answer but not working in my case. When I used default keyboard it scroll the text what i input number
My key board is
when length is greater then TextFied Width then it display
My code is
- (IBAction)numberPressed:(id)sender {
UIButton *btn=(UIButton *)sender;
int number=btn.tag;
if (number <= 9)
txtPrice.text = [NSString stringWithFormat:#"%#%d",txtPrice.text, number];
//decimal point
else if (number == 10) {
if ([txtPrice.text rangeOfString:#"."].location == NSNotFound)
txtPrice.text = [NSString stringWithFormat:#"%#.", txtPrice.text];
}
//0
else if (number == 11)
txtPrice.text = [NSString stringWithFormat:#"%#0", txtPrice.text];
//backspace
else if (number == 12) {
if ([txtPrice.text length] > 0)
txtPrice.text = [txtPrice.text substringToIndex:[txtPrice.text length] - 1];
else
txtPrice.text = #"";
}
}
#pragma mark -
#pragma mark -TextField Delegate Method
-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
[self showKeyboard];
return NO; // Hide both keyboard and blinking cursor.
}
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
return YES;
}
UITextField is specifically one-line only. So whatever the UITextField is big when it reach the end it will display dots.
You need to use UITextView instead of UITextField for display and editing of multiline text.
In Interface Builder add a UITextView where you want it and select the "editable" box. It will be multiline by default.
I think this will help you. ^_^
You can try this:
self.txtPrice.font = [UIFont systemFontOfSize: 14.0];
self.txtPrice.adjustsFontSizeToFitWidth = YES;
self.txtPrice.minimumFontSize = 7.0;
"adjustsFontSizeToFitWidth" is a Boolean value indicating whether the font size should be reduced in order to fit the text string into the text field’s bounding rectangle.
"minimumFontSize" is the size of the smallest permissible font with which to draw the text field’s text.
If you want a similar behavior as the calculator or the phone app you have to set the following property to true(YES):
textField.adjustsFontSizeToFitWidth = YES;
You should also set the minimumFontSize property to "to prevent the receiver from reducing the font size to the point where it is no longer legible."
Check out the UITextField Reference
Another approach is (Remove dot and clip text to frame)-
your can remove dot from UITextField calling following code
[self.yourTextField becomeFirstResponder];
you can also hide default keyboard [if you use any custom keyboard] using following code
// Hide keyboard for Dial Pad, but show blinking cursor
UIView *dummyKeyboardView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 1, 1)];
yourTextField.inputView = dummyKeyboardView;
[dummyKeyboardView release];
But I think IlNero's answer is better for you if you want to show all text (does not clip).
What you can do is
txtPrice.text = [txtPrice.text stringByReplacingOccurrencesOfString:#"." withString:#""];
let me know it is working or not!!!
Happy Coding!!!
This seems impossible, but maybe someone else has had the same problem.
Is it possible for me to accept an autocomplete programmatically, or in some way get the suggested word that pops up? My problem is that I'm capturing the return/backspace keystroke and then move focus to another textview. When enter/backspace is hit, the textview will ignore the auto-suggested word. It seems that it is only possible to accept an autocompletion by hit space/dot (and return for new row). With this code:
- (BOOL) textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range
replacementText:(NSString *)text {
NSRange textViewRange = [textView selectedRange];
// Handle newrow and backspace.
if(([text length] == 0) && (textViewRange.location== 0) && textViewRange.length==0){
// BACKSPACE KEYSTROKE
[delegate doSomethingWhenBackspace];
return NO;
}else if ([text isEqualToString:#"\n"]){
// RETURN KEYSTROKE
[delegate doSomethingWhenReturn];
return NO;
}
return YES;
}
I tried to programmatically add "space" when the return key is hit but that also ignores the auto-completed word.
else if ([text isEqualToString:#"\n"]){
// Tryin to accept autocomplete with no result.
textview.text = [textview.text stringByAppendingString:#" "];
// RETURN KEYSTROKE
[delegate doSomethingWhenReturn];
return NO;
}
Any suggestions?
Call -resignFirstResponder (i.e. [textView resignFirstResponder]) on the text view or text field which needs to accept autocomplete results: UIKit will change the .text property to include the autocorrected text.
If you want to keep the keyboard up after your first view resigns first responder, pass the firstResponder responsibility onto your next text input view with [anotherTextView becomeFirstResponder].
For backspace and space u can use this condition
if ([[text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]] length]==0)
{
[delegate doSomethingWhenBackspace];
return NO;
}
I've had a very similar problem, I was making an app that had to read every letter in a text view and I has issues when Autocomplete inserted words because it was saving it as if it was one letter.
you could add each character to an array and then check to see if any are over 1 string in length. Or you could add each character that is put in into an array and then run something like
NSString *string = text;
NSMutableArray *array = [NSMutableArray new];
for (int i=0; i<string.length; i++) {
[array addObject:[string substringWithRange:NSMakeRange(i, 1)]];
}
to add each character individually, by comparing the two arrays you could determine if autocorrect has been used and with what word/s.
Hope this will help.
I have a UITextField that I'd like to add a "?" suffix to all text entered.
The user should not be able to remove this "?" or add text to the right hand side of it.
What's the best way to go about this?
Use the UITextFieldDelegate protocol to alter the string whenever the field is being edited. Here's a quick stab at it; this will need work, but it should get you started.
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
NSString * currentText = [textField text];
if( [currentText characterAtIndex:[currentText length] - 1] != '?' ){
NSMutableString * newText = [NSMutableString stringWithString:currentText];
[newText replaceCharactersInRange:range withString:string];
[newText appendString:#"?"];
[textField setText:newText];
// We've already made the replacement
return NO;
}
// Allow the text field to handle the replacement
return YES;
}
You'll probably need to subclass UITextField and override its drawText: method to draw an additional "?" character to the right of the actual text. (Rather than actually add a "?" to the text of the view.
I had this issue and I wrote a subclass to add this functionality: https://github.com/sbaumgarten/UIPlaceholderSuffixField.
Hopefully you have found a solution by now but if you haven't, this should work.
I realize this answer is late, but I found most of these did not work for my scenario. I have a UITextField that I simply want to force to have a suffix that the user cannot edit. However, I don't want to subclass UITextView, modify how it handles drawing, etc. I just want to prevent the user from modifying the suffix.
First, I ensure the suffix is set in the textfield when editing takes place. This could be done any number of ways depending upon your scenario. For mine, I wanted it there from the start, so I simply set the textfield's text property equal to the suffix when the view loads and store off the length of the suffix for later. For example:
- (void)viewDidLoad {
[super viewDidLoad];
myTextField.text = "suffix";
_suffixLength = myTextField.text.length;
}
Then I used the UITextFieldDelegate protocol as Josh suggested above, but use the length of the string and the range to ensure nothing edits the suffix:
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
// Determine starting location of the suffix in the current string
int suffixLocation = textField.text.length - _suffixLength;
// Do not allow replacing anything in/past the suffix
if (range.location + range.length > suffixLocation)
{
return NO;
}
// Continue with delegate code...
}
This should work for any suffix value you assign to the textfield.
For a single-line UITextField you should be able to measure the size of the NSString (it has a measurement function in there, somewhere) and move a UILabel to the right position.
I would add a method that is called when edit finishes:
`- (void)editDidFinish {
NSString* str=[[NSString alloc] init];
str=myEdit.text;
[str stringByAppendingString:#"?"];
myEdit.text=str;
}`
OK, im definitly too late, but maybe i can help someone out either way:
The intended way to accomplish this is by using a custom NSFormatter. Heres the docs:
https://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSFormatter_Class/Reference/Reference.html
The basic idea is this: you create a subclass of NSFormatter, and the override at least the two worker methods:
-stringObjectForValue:
this will produce the dipsplay-String from the value stored in the object (i.e. add your questionmark here)
-objectValue:ForString:errorDescription
here, you need to transform the display-string into an object you want to store, i.e. remove the questionmark
The formatter can then be used to convert the data from the stored objects into strings that are suitable for presentation to the user.
The big advantage is that you can use formatters wherever your string will appear in the UI. It is not limited to certain UI-Elements like the solution where you override -drawText in UITextField. Its just hella convenient.
This class method I have written in Objective-C, helps you to add a suffix text to a UITextField.
I order to make it work, you need to initialize the UILabel to the prefix or suffix in your UITextFieldLabel as follow:
myTextField.rightView = [[UILabel alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 0.0f, myTextField.frame.size.height)];
myTextField.rightViewMode = UITextFieldViewModeAlways;
[MyClass UpdateUITextFieldSuffix:myTextField withString:#"My Suffix!"];
Once we have the UILabel attached to the UITextField, you can use this class method to update the text, and this text will be automatically resized to fit in the field.
+ (BOOL)UpdateUITextFieldSuffix:(UITextField*)textField withString:(NSString*)string
{
BOOL returnUpdateSuffix = NO;
if (string != nil && [string respondsToSelector:#selector(length)] && [string length] > 0)
{
NSObject *labelSuffix = textField.rightView;
if (labelSuffix != nil && [labelSuffix respondsToSelector:#selector(setText:)])
{
[(UILabel*)labelSuffix setTextAlignment:NSTextAlignmentRight];
[(UILabel*)labelSuffix setText:string];
[(UILabel*)labelSuffix setBackgroundColor:[UIColor redColor]];
{
NSDictionary *attributesDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
((UILabel*)labelSuffix).font, NSFontAttributeName,nil];
CGRect frame = [((UILabel*)labelSuffix).text boundingRectWithSize:CGSizeMake(0.0f, CGFLOAT_MAX)
options:NSStringDrawingUsesLineFragmentOrigin
attributes:attributesDictionary
context:nil];
CGSize size = frame.size;
CGRect newFrame = [(UILabel*)labelSuffix frame];
newFrame.size.width = size.width;
[(UILabel*)labelSuffix setFrame:newFrame];
[(UILabel*)labelSuffix setNeedsLayout];
[(UILabel*)labelSuffix layoutIfNeeded];
}
returnUpdateSuffix = YES;
}
}
return returnUpdateSuffix;
}
I have written the following method to achieve the above task of placing non-editable suffix to UITextField:
- (void)setSuffixText:(NSString *)suffix
{
UILabel *label = [[UILabel alloc] initWithFrame:CGRectZero];
[label setBackgroundColor:[UIColor clearColor]];
[label setFont:[UIFont fontWithName:self.tfdDistance.font.fontName size:self.tfdDistance.font.pointSize]];
[label setTextColor:self.tfdDistance.textColor];
[label setAlpha:.5];
[label setText:suffix];
CGSize suffixSize = [suffix sizeWithFont:label.font];
label.frame = CGRectMake(0, 0, suffixSize.width, self.tfdDistance.frame.size.height);
[self.tfdDistance setRightView:label];
[self.tfdDistance setRightViewMode:UITextFieldViewModeAlways];
}
I am trying to make a part of my app where if the person doesn't change the blank text in my UITextField, then he/she can't go on to the next step. Basically, I want to test the UITextField for nil text. I have used the if (text == #"") method, but if the person clicks on the UITextField but doesn't type, then the if statement doesn't work. For some reason it doesn't think the text == nil or "". Am I implementing the code wrong. Any other options. Please help!!!
You should be checking the length of the text property:
if([[textField text] length] == 0) {
//do something...
}
Here's the category I use...
#implementation NSString (NSString+Extensions)
- (BOOL)isNotBlank {
return [[self stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] length] > 0;
}
#end
This way a nil string would evaluate to false, which is correct. Creating an isBlank would return false for nil, which isn't correct.
I have write code to check the string is empty or not. This code also check for the string only space that is also empty for store name and address etc. this will help you.
NSString *stringTemp = textField.text;
stringTemp = [stringTemp stringByReplacingOccurrencesOfString:#" " withString:#""];
if ([stringTemp isEqualToString:#""]) {
NSLog(#"Empty string");
}
else{
NSLog(#"string has some content ");
}
Thanks
If I were you I would disable and enable the button while the user is typing. Imho it's better that the button looks disabled when there is no text than having the user click the button to tell him that he is not allowed to move to the next view. Most of apples own apps do it like this.
You achieve this behavior by using the UITextFieldDelegate method like this
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
// "Length of existing text" - "Length of replaced text" + "Length of replacement text"
NSInteger textLength = [aTextView.text length] - range.length + [text length];
if (textLength > 0) {
doneButton.enabled = YES;
}
else {
doneButton.enabled = NO;
}
return YES;
}
If you provide a prefilled textfield you have to enable the button in viewDidLoad (or where ever you want) and if you provide an empty field you have to disable it initally.
I have an UITextField and I would like that for every tap on a character, the first character is deleted. So that I just have one character in my textField every time. Moreover I would like it to display every tap in the console log.
How can I do this?
You need to implement shouldChangeCharactersInRange method in your text field delegate:
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:
(NSRange)range replacementString:(NSString *)string{
textField.text = #"";
return YES;
}
You may need to check for range and string values to cover all possible cases (like copy/paste actions). This code just sets the text field's value to the last typed character.
UITextField inherits from UIControl, so you can use the target-action mechanism that is part of the UIControl class:
[textField addTarget:self action:#selector(updateTextField) forControlEvents:UIControlEventValueChanged];
In the action method, you can replace the UITextField's text with only the last character and log that character in the console. Note that since changing the UITextField's text will again result in the "updateTextField" message being sent a second time to the target, you will need some kind of mechanism for determining whether to update or not:
- (void)updateTextField {
if(updateTextField == YES) {
updateTextField = NO;
NSString *lastChar = [textField.text substringFromIndex:[textField.text length]];
[textField setText:lastChar];
NSLog(#"%#", lastChar);
} else {
updateTextField = YES;
}
}
Or something like that anyway...
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
if (textField.text.length > 8) {
return NO;
}
return YES;
}