I want to make the keyboard disappear when the user clicks the "return" button, I was told to use
-(BOOL)textFieldShouldReturn:(UITextField *)textField {
[tf resignFirstResponder];
return YES;
}
But nothing happens when I click the "return" button, the method isn't even being called. I am doing this in
#interface gameOverMenu : UIView
not in the ViewController. I also don't use interface builder. What should I do?
You need to make sure you implement the UITextFieldDelegate and set your UITextField delegate to self. In your .h file:
#interface gameOverMenu : UIView <UITextFieldDelegate>
And somewhere in your .m file (viewDidLoad: maybe):
self.yourTextField.delegate = self;
Now your -(BOOL)textFieldShouldReturn:(UITextField *)textField method should be called.
Make sure that you have set the parent class (whatever it is) as a UITextFieldDelegate
Related
I just started reading up on Objective-C yesterday, and i can't quite figure why my
textFieldShouldReturn
method isn't being run.
This is the actual method:
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
self.itemTxt.text = #"Return pressed";
return YES;
}
This is the interface line in my header file:
#interface ArrViewController : UIViewController <UITextFieldDelegate>
You need to actively set the delegate for the UITextField:
For example, in viewDidLoad you could write:
myTextField.delegate = self;
You can also hook this up in Interface Builder if desired.
Use setDelegate method of your textfield to self
I have a DetailViewController, which implementation file contains this code:
#import <UIKit/UIKit.h>
#interface DetailViewController : UIViewController <UITextFieldDelegate>
{
__weak IBOutlet UITextField *nameField;
__weak IBOutlet UITextField *numberField;
}
#end
In my storyboard, I have set the ViewController's to DetailViewController and connected the delegate of both of my UITextFields to my DetailViewController. The implementation file of my DetailViewController contains this method to dismiss the keyboard when tapping somewhere other than the text field:
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
return YES;
}
This method is not called though, I have tested this using a breakpoint. What could be going wrong?
rdelmar is correct, the code you have only gets triggered when the user hits the "return" key on the keyboard, not when they click outside of the keyboard.
To get the behavior you are looking for, I'd add a Tap Gesture Recognizer to the view behind your text field, then put [nameField resignFirstResponder]; and [numberField resignFirstResponder]; in the tap gesture recognizer's code.
I created a sample project
added to the viewcontroller
added a textfield and connected its delegate
write the code in viewcontroller
(BOOL)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
return YES;
}
it worked fine.Tried weak it also worked both as instance variable and property
So check if that you are reallocating it anywhere and also check its memory is same there using breakpoint
Why do you use _weak? Remove it.
In your .m file do (in viewDidLoad):
[nameField setDelegate:self];
Same for the other textfield(s).
I have UITextField and I have
#property (nonatomic, assign) id <UITextFieldDelegate> delegate;
After pressing a done button on keybord, it should dismiss. Can someone tell how I can do it using this property?
The dismissing of the keyboard does not happen merely by being a delegate of the UITextField. Your delegate must dismiss it.
In the viewDidLoad in your controller you must assign the delegate, or set it up in Interface Builder:
- (void)viewDidLoad {
self.textField.delegate = self;
}
Then in your controller, implement the following delegate method.
#pragma mark - UITextFieldDelegate
// This method gets called when you hit the enter key on the keyboard,
// or in this case 'DONE'. The textfield is asking if it should put
// a carriage return in the field. This is our opportunity to dismiss
// the keyboard.
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
[textField resignFirstResponder]; // This is what hides the keyboard
return NO;
}
Further reading:
Responder Chain - developer.apple.com
UITextFieldDelegate Protocol Reference - developer.apple.com
Link didEndOnExit to a method that has [self resignFirstResponder]
I have a viewController with this:
#interface RootViewController : UIViewController <UITextFieldDelegate>{
Then I have a textfield added programmatically like this in viewController.m:
UITextField*textFieldRounded=[[UITextField alloc] initWithFrame:frame];
textFieldRounded.delegate = self;
In the same .m i have tried all of these:
- (void)textFieldDidEndEditing:(UITextField *)textField{
[textField resignFirstResponder];
NSLog(#"returned?");
}
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
[textField resignFirstResponder];
NSLog(#"returned?");
return YES;
}
-(BOOL)textFieldShouldEndEditing:(UITextField *)textField{
[textField resignFirstResponder];
NSLog(#"returned?");
return YES;
}
The keyboard appears fine when I click the text field, which is in a subview of the viewController. but pressing Done does nothing. The NSLog statements never appear, so these methods are never getting called. Any ideas?
I just barely had this question, maybe, but what I did was attached a tap gesture recognizer object to the view, made a instance method called clear keyboard:, and inside the function I put [whateverItIsThatOpenedTheKeyboard resignFirstResponder]; and that's it. Maybe you asking something totally different, but I thought I would try and help :)
Declare the UITextField in .h file as an IBOutlet with property and synthesize it in .m file.
Use this delegate method
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string;
Add this delegate method to your code and run your app once again..
I have a class that needs to ask the user a question and wait for the users response to determine the next action. What would be the best way to do this? Using a delegate? How? I have a UITextField and a UITextField in the class.
Thanks
It all depends upon how you wish for the user to submit the data. The most user friendly way is to do as TahoeWolverine explained and implement - (BOOL)textFieldShouldReturn:(UITextField *)textField from UITextFieldDelegate. In order to use this, the class that implements textFieldShouldReturn: must have <UITextFieldDelegate> protocol in its interface declaration; moreover, the textfield in question must have the UITextFieldDelegate-implementing class set as its delegate. In most cases those would look like this:
#interface SomeViewController : UIViewController <UITextFieldDelegate> {
UITextField *myField;
}
#property (nonatomic, retain) IBOutlet UITextField *myfield
#end
and somewhere in the implementation:
[[self myField] setDelegate:self];
Finally, implementing the UITextFieldDelegate protocol:
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
if (textField == [self myField]) {
[self doSomethingWithText:[[self myField] text]];
}
}
Hope that helps.
Yes, you should use a delegate, and link that to the keyboard's done button (I'm assuming that you're presenting the user a keyboard). Simply link your delegate to the return key of the keyboard, and that should do the trick.