I have 3 textfields, which can hold at most one character. If a character is entered in first textfield, then the focus should automatically shift to the second and so on.
For this, I used textField:shouldChangeCharactersInRange:replacementString:
Going by this, I could check the length of my textfield and assign first responder status to the next textfield.
When i type a character in the first textfield, the character is displayed in the textfield, but the focus doesn't automatically shift to the next textfield. It shifts only when I enter the next alphabet, where it tries to check the condition, and thereby it fails, and then only the focus shifts to the next textfield.
IS there anyway where, the focus should be shifted to the second, just after the first character is entered.
Try checking the length of the replacementString parameter instead of that of the textfield
Call
- (BOOL)becomeFirstResponder
on it. You can check that it can become first responder with the method
- (BOOL)canBecomeFirstResponder
Related
Is it possible to link text boxes in Swift? For example, I have two text boxes that the user can type in. When the user has filled up the first text box (--i.e. there's no more room for text) the cursor automatically moves to the second text box so any further characters typed will appear in the second text box.
You can use becomeFirstResponder method from the textfield:
//This textfield will get the focus.
yourNextTextField.becomeFirstResponder()
To check the number of letters in your UITextfield, you can implement the UITextFieldDelegate and use the shouldChangeCharactersInRange method.
In there you calculate the length of your string.
I Want to enter amount in a textField i kept a place holder 0.00
If i enter a value the value should come to the left side of the decimal point and the 00 should stay still.
How?
You should use one of the following methods
– textViewShouldBeginEditing:
– textViewDidBeginEditing:
– textViewShouldEndEditing:
– textViewDidEndEditing:
for appending 00 after the entered number.
I take it the .00 always stays .00, so you cannot change the value after the decimal point?
Then you should implement the text field delegate
-(BOOL)textField:(UITextField*)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString*)string
This is called any time a user enters a character, so you can easily use it to change the displayed text in the textfield to show the entered number formatted with
textField.text =[NSString stringWithFormat:#"%d.00", intNumberEnteredUpToNow];
Of course you should test the entered character (it could be a backspace or a letter, depending on the keyboard you are showing), and put the parts before the decimal point that are currently shown into the intNumberEnteredUpToNow value.
I am making an application in which i have use a keyboard for input in text field. Now my client requirement is that he need a substitute of keyboard input for text field. Basically i have need increment and decrement value of text field. SO i need some other function which is used for increment and decrement value of text field. For that i have use keyboard and now i require any other function like increment and decrement operator or tap to increment and decrement text or any thing else. What i used for that purpose?
Thanks in advances...
Put a pair of up/down buttons next to the text field. UIButtons will still work when the keyboard is visible. You can also hide these buttons when they aren't needed.
I've got a textfield, which is using a numberpad for input, and I'd like to make it so that when the user types in a number, the textfield automatically inserts an ' (apostrophe) after the first digit, and any other numbers would follow the apostrophe. But to make this noticeable, I'd like to have the apostrophe 'pop up' with a change of color, before resting in the textfield. Much like the action of the keyboard letters when they're hit - they pop out for a second.
Seems to me there's several things to be done and I haven't found any help online with them:
Get notice after one digit is entered (more than one digit could be entered, but the animation would take place and the additional numbers would show up after the apostrophe).
Add the apostrophe into the textfield.
Animate the insertion of the apostrophe, while allowing the textfield to continually take in input.
Any direction to libraries or code or suggestions would be immensely appreciated. Thank you so much. I've a hunch I'm supposed to use coco2d but have no idea how to get started.
I figured out a work around that I'd thought I'd share in case anyone is interested. For monitoring input, you can use:
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
which gets called when the user touches the keyboard, but before the character or number is processed and put to screen. The only problem is that on an empty text field, if the user hits backspace this method doesn't get called (even if not null). Basically because there's no change to an empty text field to process with an empty string.
You could also use: UITextFieldTextDidChangeNotification, but it gets called in the same way and doesn't offer any parameters to play with.
For 2: I ended up making labels for these and putting them over the text field where I wanted, and playing with their properties as needed. It was kind of messy so I actually split the text field into 2 and used the above method to jump in between. Seems to work mostly well, but dealing with the backspace issue is still unsolved (how to move back to the first text field when backspacing through text for example). Am considering overlaying a transparent button on that part of the keyboard. Seems messy though. I would appreciate any cleaner ideas that are out there.
So, didn't end up doing any animations, which would have been a much slicker. Hope this helps.
hello all i am working with multiple uitextfields.i have a problem in cursor placing while changing firstResponder. i would like to do "Cursor placement in 2nd field once we entered the 3rd character in the 1st field." but the cursor stays in 3rd place.here i am restricting my first text field length to 3.
This SO answer should help you. You set up notifications to be issued when the first text field state changes, firing a method that checks the text field's length. If firstTextField.text.length is equal to three characters, call [secondTextField becomeFirstResponder].