I am creating an application in which i want to add record in the database after focus lost event of the text field.
Which is the lost focus event of textfield in xcode??
The method you need is - (void)textFieldDidEndEditing:(UITextField *)textField.
Check out the UITextFieldDelegate reference for more info >
you can use - (BOOL)textFieldShouldReturn:(UITextField *)theTextField delegate method of UITextField
Also you should consider using event textFieldDidEndEditing:
Hope this helps.
Related
I've searched in the web but didn't found anything similar to what I want. So,I am creating an application and I need to recognize when the user leaves a specific UITextField,more clearly.when the user enters a value in the UITextField and after touch outside to dismiss the keyboard, I need to recognize that the UITextField has lost activity for,after I perform an action.
Is this possible?
Look up UITextFieldDelegate in the Apple docs. Specifically the methods textFieldDidEndEditing: and textFieldShouldReturn:. Hook up the specific UITextField to an outlet and assign its delegate to your viewController. Then in the delegate method, if you need to make sure it's a specific text field, compare it to the IBOutlet.
write UITextFieldDelegate in .h file then after include the following method in .m file.
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
return NO;
}
I work on a project for iPhone iOS 4 and Xcode 4.
There is a method to know if the text of a UITextField ha been modified by the user?
For example,I have 2 UITextField, textFieldA and textFieldB, and suppose that textField contains some text as "abc".
The user first tap in textFieldA (keyboard opens), and then in textFieldB. How can I know if the text in textFieldA has been modified by the user?
Thank you.
How about: First subscribe to the text field delegate in your header file with:
<UITextFieldDelegate>
Then somewhere in your implementation file (.m), you can add:
myTextField.delegate = self;
Now you can access the delegate methods for text fields. This means you can now use:
-(void)textFieldDidBeginEditing:(UITextField *)textField
and -(void)textFieldDidEndEditing:(UITextField *)textField
Why not store the value of your text field in textFieldDidBeginEditing and compare it to it's value in textFieldDidEndEditing? `
You will have to implement the uitextfielddelegate protocol. Check the documentation for more details.
Better to have the text field send a UIControlEventValueChanged action message to your controller. This way you don't need to wonder if the user actually edited the text field. You can either wire the target/action in IB or do it programmatically:
[myTextField addTarget:self
action:#selector(textFieldValueChanged:)
forControlEvents:UIControlEventValueChanged];
Then implement the appropriate action in the target:
- (IBAction)textFieldValueChanged:(UITextField *)sender {
// text field value was changed
}
This is discussed in more detail for this question
Connect an action to the text field and choose the "value changed" event, then every time that user changes the value (text) of the text field the action will be executed
How can I tell the current firstResponder to resign? I have a UITableView with a bunch of TextFields and I don't know which is active at all times. I thought about storing pointers to all cells in an array and iterating through it, telling every cell to resignFirstResponder but I'm sure there is an easier way. Maybe something like [CurrentFirstResponder resignFirstResponder]?
I would appreciate some help, Fabian
EDIT: I don't want to dismiss the keyboard when the user taps done. It should be dismissed programmatically. Since I don't know which UITextField is active at any time, I am searching for something that calls resignFirstResponder on the current FirstResponder.
You could keep a reference to the UITextfeild that's actively editing using textFieldDidBeginEditing: on the UITextFieldDelegate Protocol or you could do this with your parent view:
UIView * myParentViewView;//view containing one or more editable UI controls
[myParentViewView endEditing:YES];
I hope this will solve your problem,
Assign delegate to UItextField,
textField.delegate=self;
then in following method
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
//This for to resign on begin editing
[textField resignFirstResponder];
}
- (void)textFieldDidEndEditing:(UITextField *)textField
{
//This for to resign on end editing
[textField resignFirstResponder];
}
If you dont want to the textField to be editable then,
textField.editing=NO;
Set tag to distingush your textFields
Simply use the UITextFieldDelegate (reference). Whenever - (BOOL)textFieldShouldReturn:(UITextField *)textField is called, perform [textField resignFirstResponder], since this method is always invoked with the currently active textfield.
If you still need to distinguish between your textfields, try setting a tag and use it with if(textfield.tag == self.mytextfield.tag) {...}
I cannot get textFieldShouldEndEditing to call. I have re created the links in interface builder and tried, but nothing seems to work. Any idea why this would not be called?
Edit
I am implementing both -textFieldShouldEndEditing and -textFieldDidFinishEditing. Adding the delegate for the textField didnt help either. The code I am using below is not triggering the log messages.
-(BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
NSLog(#"Done editing...");
[textField resignFirstResponder];
return YES;
}
-(void)textFieldDidEndEditing:(UITextField *)textField
{
NSLog(#"Done editing...");
}
Don't use -textFieldDidEndEditing. That gets called after the text field resigns first responder... which it hasn't yet because you haven't told it to because that method hasn't been called yet because first responder hasn't been resigned because you haven't told it to yet. Circular, chicken-and-egg sort of problem.
The delegate method you want is -textFieldShouldReturn. That gets called when the "return" key is pressed. Inside that, tell the text field to resign first responder, then return YES.
Also put a big clear custom button behind your form, and hook its touch-up-inside to a method that goes through all the text fields in the form and resigns first responder on each of them. So a background touch releases the keyboard too.
I saw it was a long-long time ago and I hope that since then you could solve the problem. Everybody tells you the right thing, but you have to take care of all at the same time! Let me just go through on all of them:
Make the promise first:
#interface yourViewController : UIViewController <UITextFieldDelegate>
Then make sure, you also hook up your textfields' delegates on the storyboard to the actual viewcontroller (yourViewController)!
When its done, implement the method in the right viewcontroller file (yourViewController.m):
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
[textField resignFirstResponder];
return YES;
}
Test it, and it should work now...
I hope it helps!
set the delegate to your TextField
In the interface Builder select your TextField, then press command + 2(Connections) and connect the delegate outled with the file's owner then save, and with that should work.
the delegate method are:
-(void)textFieldDidBeginEditing:(UITextField *)textField {
}
-(void)textFieldDidEndEditing:(UITextField *)textField {
}
Hope this can help you.
Have you set the delegate?
If not,set using
textField.delegate=self;
or else,
You must include UITextFieldDelegate in .h file
#interface yourViewController : UIViewController <UITextFieldDelegate>
EDIT:
You have to code in this delegate textFieldDidEndEditing not this textFieldShouldEndEditing
I want to open a panel when the user clicks on a text field. I think I should use a delegate method that responds to the click event. I found that the
- (void)textDidBeginEditing:(NSNotification *)aNotification
method does not work, and that the
- (void)controlTextDidBeginEditing:(NSNotification *)aNotification
method works, but only when I edit the text in the text field, not then I click it. If I edit the text again, this method does not work. Why?
Sorry, I think I want to use this on mac , not on iphone,How to do with it with cocoa?
The textFieldDidBeginEditing: delegate method only gets triggered when the user starts editing the text inside the UITextField, as the method name implies.
If you want to trigger a method when the UITextField is touched, you should try this:
[textField addTarget:self
action:#selector(textFieldTouched:)
forControlEvents:UIControlEventTouchDown];
- (void) textFieldTouched:(id)sender {
// Display the panel
}
The correct delegate method name is
- (void)textFieldDidBeginEditing:(UITextField *)textField
From the documentation:
This method notifies the delegate that the specified text field just became the first responder.