So I found this thread a while ago:
Change UITextField background when editing begins
The top answer is a fantastic resource for changing the background image of a textField when the user edits it. However, my issue is, how can you enable this with MULTIPLE text fields?
Specifically (for my app) I have a login and password field. Using the code I'll post below I can get my first text field to change images correctly when the user taps it. However, I cannot get the next field to follow suit when the user taps either the next text field or the "Next" option on the keyboard. As you can only have one instance of "textFieldShouldBeginEditing" as well as ending, you need to set the code for image change for both fields under the same section. however, when I do this, both my fields change when the first field is tapped, and both restore when the second is tapped.
Any ideas on this one excellent community?
Here's some code:
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
_userNameTextField.background = [UIImage imageNamed:#"login_field_highlighted#2x"];
return YES;
_passwordTextField.background = [UIImage imageNamed:#"password_field_highlighted#2x"];
return YES;
}
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
_userNameTextField.background = [UIImage imageNamed:#"login_field#2x"];
return YES;
_passwordTextField.background = [UIImage imageNamed:#"password_field#2x"];
return YES;
}
- (BOOL) textFieldShouldReturn:(UITextField *)textField {
NSLog(#"textFieldShouldReturn");
if (textField == _userNameTextField) {
[_passwordTextField becomeFirstResponder];
} else if (textField == _passwordTextField) {
[_passwordTextField resignFirstResponder];
}
return YES;
}
In each of those methods, you just need to check to see which textfield is targeted, just like you did in textFieldShouldReturn:
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
if (textField == _userNameTextField) {
_userNameTextField.background = [UIImage imageNamed:#"login_field#2x"];
} else if (textField == _passwordTextField) {
_passwordTextField.background = [UIImage imageNamed:#"password_field#2x];
}
return YES;
}
Related
I wrote a textFieldDone: method that's suppose to move the cursor to the next textfield when the Return button is tapped.
- (IBAction)textFieldDone:(id)sender {
[nextTextField becomeFirstResponder];
NSLog(#"in : textFieldDone");
}
I have connected the first textfield's "Did End On Exit" event to the File's Owner and chose the textFieldDone: method.
I also assigned the File's Owner as the textfield's delegate (because I need the view to scroll up/down accordingly so the keyboard won't hide the textfields).
When I run the app on the simulator and tap the return button the first textfield resign first responder and in the log I see that the program didn't go through the textFieldDone: method, but it did go through the textFieldDidEndEditing: method.
I used that method before and had no problem.
Is it because the File's Owner is the textfield's delegate?
You need to write on
- (BOOL) textFieldShouldReturn:(UITextField*) textField
to go to next text field.
Sample code:
-(BOOL) textFieldShouldReturn:(UITextField*) textField
{
if (textField == txt1)
{
[txt1 resignFirstResponder];
[txt2 becomeFirstResponder];
}
if (textField == txt2)
{
[txt2 resignFirstResponder];
}
return YES;
}
Don't forget to add delegate UITextFieldDelegate to your UITextfield.
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
if ([textField isEqual:txt1])
{
[txt2 becomeFirstResponder];
}
return true;
}
the above answers are correct, but to make this more general you should use the tag option
UITextField *txt1;
txt1.tag=1;
UITextField *txt2;
txt2.tag=2;
UITextField *txt3;
txt3.tag=3;
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
if ([[textField superview] viewWithTag:textField.tag+1])
{
[[[textField superview] viewWithTag:textField.tag+1] becomeFirstResponder];
}
else{ [textField resignFirstResponder];
}
return true;
}
note: don't use textField with tag 0. because all subViews have tag=0 by default.
I am trying to find a way to prevent the keyboard from appearing when the user taps on a TextField but could`t find a way to do it.
I tried this code after I linked my textField to delegate and still it did not work for me, the code was logging but the keyboard did appear.
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
NSLog(#"BeginEditing");
return YES;
[textField resignFirstResponder];
}
When I return with NO I lose the focus from the textField, which I need.
The textFields I have are filled with values from a buttons on the same view, thats why I don't want the keyboard to appear, and at the same time I want the user to select the textField they want to fill.
if you just want user to select the textfield to fill and does not want to keyboard to show up then you can do the following:
add tag to your textfields
change the code to this:
-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{
selectedTextFieldTag = textField.tag;
return NO;
}
use selectedTextField value to identify which textfield to fill in your code. return NO will not allow keyboard to appear.
This will help you for sure.
-(BOOL)textFieldShouldBeginEditing:(UITextField*)textField {
UIView *dummyView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 1, 1)];
activeField.inputView = dummyView; // Hide keyboard, but show blinking cursor
return YES;
}
I tested and it is working for me. Hope this will be useful for others who have similar issue.
[textField resignFirstResponder]; will not be called because you are returning from the method before it can get called. Does that not fire a warning?
Try returning NO here or if that doesn't work, try disabling user-interaction on the text field:
[myTextField setUserInteractionEnabled:NO];
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
NSLog(#"BeginEditing");
[textField resignFirstResponder];
return YES;
}
so here you just use flag int variable to assign the value to focused textfield
define int i; flag globally in .h or .m file
after that in textField Delegate method use bellow code...
-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField{
if (textField == yourtextField1 ) {
i=1;
}
else if (textField == yourtextField2 ) {
i=2;
}
else if (textField == yourtextField3 ) {
i=3;
}
else if (textField == yourtextField4 ) {
i=4;
}
return NO;
}
-(IBAction)yourbutton1_Clicked:(id)sender{
if( i == 1){
yourtextField1.text=yourbutton1.titleLabel.text;
}
else if ( i == 2){
yourtextField2.text=yourbutton1.titleLabel.text;
}
else if ( i == 3){
yourtextField3.text=yourbutton1.titleLabel.text;
}
else if ( i == 4){
yourtextField4.text=yourbutton1.titleLabel.text;
}
else{
NSLog(#"Please Click On TextField");//here you can put AlertView Message
}
}
and so on.......
also you can use common method with sender id of button and also tag......
I have an iPad application which has a sign up form within it. The form is very basic and contains only two UITextFields which are for Name & Email address.
The first TextField is for the candidates Name, When they enter their name in and press 'Next' on the keyboard I want this to automatically move to the next Email Address TextField to editing.
Any idea how I can set the next button the keyboard to jump to the next keyboard?
Thanks
You need to make your view controller the UITextField delegate, and implement the UITextField delegate method:
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
if (textField == nameField) {
[textField resignFirstResponder];
[emailField becomeFirstResponder];
} else if (textField == emailField) {
// here you can define what happens
// when user presses return on the email field
}
return YES;
}
Swift version:
func textFieldShouldReturn(textField: UITextField) -> Bool {
if textField == nameField {
textField.resignFirstResponder()
emailField.becomeFirstResponder()
} else if textField == emailField {
// here you can define what happens
// when user presses return on the email field
}
return true
}
You may also want to scroll your view for the emailField to become visible. If your view controller is an instance of UITableViewController, this should happen automatically. If not, you should read this Apple document, especially Moving Content That Is Located Under the Keyboard part.
Additionally to #lawicko 's answer I often change the button text to give that final finishing touch (e.g. says next when there are more fields and then done when on the last):
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
BOOL isLastTextField = //.. your logic to figure out if the current text field is the last
if (isLastTextField) {
textField.returnKeyType = UIReturnKeyDone;
} else {
textField.returnKeyType = UIReturnKeyNext;
}
}
Swift version of correct answer.
In my experience, you do not need to resignFirstResponder when switching textFields.
In this example, it's just your basic username and password textFields.
The keyboard "return key" in storyboard for username is set to "Next" and the one for password is set to "Done".
Then just connect the delegates for these two text fields and add this extension and you're pretty much done.
extension LoginViewController: UITextFieldDelegate {
func textFieldShouldReturn(textField: UITextField) -> Bool {
if textField == textFieldPassword {
self.view.endEditing(true)
} else {
textFieldPassword.becomeFirstResponder()
}
return true
}
}
A more consistent and robust way is to use NextResponderTextField
You can configure it totally from interface builder.
All you need to do is
Set the class type of your UITextField to be NextResponderTextField
Then set the outlet of the nextResponderField to point to the next responder it can be anything UITextField or any UIResponder subclass. It can be also a UIButton and the library is smart enough to trigger the TouchUpInside event of the button only if it's enabled.
Here is the library in action:
A Swift 4 extension. Just pass the array of UITextFields and it will connect each one to the next until the last one which resigns the first responder (hides the keyboard):
extension UITextField {
class func connectFields(fields: [UITextField]) {
guard let last = fields.last else { return }
// To reset the targets in case you call this method again to change the connected fields
fields.forEach { $0.removeTarget(nil, action: nil, for: .editingDidEndOnExit) }
for i in 0 ..< fields.count - 1 {
fields[i].returnKeyType = .next
fields[i].addTarget(fields[i + 1], action: #selector(UIResponder.becomeFirstResponder), for: .editingDidEndOnExit)
}
last.returnKeyType = .continue
last.addTarget(last, action: #selector(UIResponder.resignFirstResponder), for: .editingDidEndOnExit)
}
}
- (BOOL) textFieldShouldReturn:(UITextField *)textField
{
if (textField == self.textFieldName)
{
[self.textFieldName resignFirstResponder];
[self.textFieldPassword becomeFirstResponder];
}
else if (textField == self.textFieldPassword)
{
[self.textFieldPassword resignFirstResponder];
[self login:self];
}
return true;
}
#interface MLLoginViewController ()<UITextFieldDelegate>
#end
#implementation MLLoginViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.textFieldName.delegate = self;
self.textFieldPassword.delegate = self;
Make an outlet for the textfield, then
viewController.h
(IBAction)textFieldDoneEditing:(id)sender;
viewController.m
(IBAction)textFieldDoneEditing:(id)sender {
[textField resignFirstResponder];
if (textField == nameField) {
[emailField becomeFirstResponder];
}
}
Make the relation between (show the connections inspector > Sent Events)didEndOnExit and textFieldDoneEditing
I have two textfield, in first textfield I write "Hello" and when I push enter in iPad keyboard, I want that in second textfield appear "World"; How can I use enter to create an action in my application?
You would typically assign your view controller as the text field's delegate and then implement the textFieldShouldReturn: method, e.g.:
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
otherTextField.text = #"World"
return YES;
}
You can do that by implementing the UITextFieldDelegate protocol in your controller. For instance you could do something like:
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
if (textField == theFirstTextField && [textField.text isEqualToString:#"Hello"]) {
theSecondTextField.text = #"World";
}
return YES;
}
Set your view controller to be the textfield's delegate then implement
-(BOOL)textFieldShouldReturn:(UITextField *)textField
this gets called when the enter button is pushed on the keyboard.
This is roughly what you'd do. Tweaking to condition around device-type (if you truly want iPad only):
#pragma mark - UITextField Delegate
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
if (textField == self.firstTextField && [textField.text isEqualToString:#"Hello"]) {
self.secondTextField.text = #"World";
}
return YES;
}
I have a class where I used the textfield delegate method "shouldChangeCharactersInRange". If the user types something in a textfield in one view, I want those changes to appear in a textfield in a different view.
Right I now, I have two xib files with the same file's owner and I make a connection (in IB) in each xib file to my textfield (which i declared as an IBOutlet). It's an Ipad app so I switch between views when user rotates device.
It's not working yet so I must be missing something? Could someone please help me! thank you!
If this question is not clear, please let me know.
Wherever your shouldChangeCharactersInRange: method is implemented, if you have a reference to both of the textfields, what you can do is set the text of both. So where right now you have something like:
- (BOOL)textField: (UITextField *)textField shouldChangeCharactersInRange: (NSRange)range replacementString: (NSString *)string
{
if (textField.text.length >= MAX_LENGTH && range.length == 0)
{
return NO;
}
else
{
return YES;
}
}
You want to add something like:
- (BOOL)textField: (UITextField *)textField shouldChangeCharactersInRange: (NSRange)range replacementString: (NSString *)string
{
if (textField.text.length >= MAX_LENGTH && range.length == 0)
{
return NO;
}
else
{
[myFirstTextField setText:string];
[mySecondTextField setText:string];
return YES;
}
}
And if you set both textFields to delegate to that single function, you don't even need to care who delegated to you there. The action you want to take is the same no matter who got text entered in them.