问题
I have two UITextFields (e.g. username and password) but I cannot get rid of the keyboard when pressing the return key on the keyboard. How can I do this?
回答1:
First you need to conform to the UITextFieldDelegate Protocol in your View/ViewController's header file like this:
@interface YourViewController : UIViewController <UITextFieldDelegate>
Then in your .m file you need to implement the following UITextFieldDelegate protocol method:
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
return YES;
}
[textField resignFirstResponder]; makes sure the keyboard is dismissed.
Make sure you're setting your view/viewcontroller to be the UITextField's delegate after you init the textfield in the .m:
yourTextField = [[UITextField alloc] initWithFrame:yourFrame];
//....
//....
//Setting the textField's properties
//....
//The next line is important!!
yourTextField.delegate = self; //self references the viewcontroller or view your textField is on
回答2:
Implement the UITextFieldDelegate method like this:
- (BOOL)textFieldShouldReturn:(UITextField *)aTextField
{
[aTextField resignFirstResponder];
return YES;
}
回答3:
See Managing the Keyboard for a complete discussion on this topic.
回答4:
Your UITextFields should have a delegate object (UITextFieldDelegate). Use the following code in your delegate to make the keyboard disappear:
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
[textField resignFirstResponder];
}
Should work so far...
回答5:
Took me couple trials, had same issue, this worked for me:
Check your spelling at -
(BOOL)textFieldShouldReturn:(UITextField *)textField {
[textField resignFirstResponder];
I corrected mine at textField instead of textfield, capitalise "F"... and bingo!! it worked..
回答6:
When the return key is pressed, call:
[uitextfield resignFirstResponder];
回答7:
After quite a bit of time hunting down something that makes sense, this is what I put together and it worked like a charm.
.h
//
// ViewController.h
// demoKeyboardScrolling
//
// Created by Chris Cantley on 11/14/13.
// Copyright (c) 2013 Chris Cantley. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController <UITextFieldDelegate>
// Connect your text field to this the below property.
@property (weak, nonatomic) IBOutlet UITextField *theTextField;
@end
.m
//
// ViewController.m
// demoKeyboardScrolling
//
// Created by Chris Cantley on 11/14/13.
// Copyright (c) 2013 Chris Cantley. All rights reserved.
//
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
// _theTextField is the name of the parameter designated in the .h file.
_theTextField.returnKeyType = UIReturnKeyDone;
[_theTextField setDelegate:self];
}
// This part is more dynamic as it closes the keyboard regardless of what text field
// is being used when pressing return.
// You might want to control every single text field separately but that isn't
// what this code do.
-(void)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
}
@end
Hope this helps!
回答8:
Set the Delegate of the UITextField to your ViewController, add a referencing outlet between the File's Owner and the UITextField, then implement this method:
-(BOOL)textFieldShouldReturn:(UITextField *)textField
{
if (textField == yourTextField)
{
[textField resignFirstResponder];
}
return NO;
}
回答9:
Add this instead of the pre-defined class
class ViewController: UIViewController, UITextFieldDelegate {
To remove keyboard when clicked outside the keyboard
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
self.view.endEditing(true)
}
and to remove keyboard when pressed enter
add this line in viewDidLoad()
inputField is the name of the textField used.
self.inputField.delegate = self
and add this function
func textFieldShouldReturn(textField: UITextField) -> Bool {
textField.resignFirstResponder()
return true
}
回答10:
Swift 2 :
this is what is did to do every thing !
close keyboard with Done button or Touch outSide ,Next for go to next input.
First Change TextFiled Return Key To Next in StoryBoard.
override func viewDidLoad() {
txtBillIdentifier.delegate = self
txtBillIdentifier.tag = 1
txtPayIdentifier.delegate = self
txtPayIdentifier.tag = 2
let tap = UITapGestureRecognizer(target: self, action: "onTouchGesture")
self.view.addGestureRecognizer(tap)
}
func textFieldShouldReturn(textField: UITextField) -> Bool {
if(textField.returnKeyType == UIReturnKeyType.Default) {
if let next = textField.superview?.viewWithTag(textField.tag+1) as? UITextField {
next.becomeFirstResponder()
return false
}
}
textField.resignFirstResponder()
return false
}
func onTouchGesture(){
self.view.endEditing(true)
}
回答11:
in swift you should delegate UITextfieldDelegate, its important don't forget it, in the viewController, like:
class MyViewController: UITextfieldDelegate{
mytextfield.delegate = self
func textFieldShouldReturn(textField: UITextField) -> Bool {
textField.resignFirstResponder()
}
}
回答12:
If you want to disappear keyboard when writing on alert box textfileds
[[alertController.textFields objectAtIndex:1] resignFirstResponder];
回答13:
You can add an IBAction to the uiTextField(the releation event is "Did End On Exit"),and the IBAction may named hideKeyboard,
-(IBAction)hideKeyboard:(id)sender
{
[uitextfield resignFirstResponder];
}
also,you can apply it to the other textFields or buttons,for example,you may add a hidden button to the view,when you click it to hide the keyboard.
回答14:
You can try this UITextfield subclass which you can set a condition for the text to dynamically change the UIReturnKey:
https://github.com/codeinteractiveapps/OBReturnKeyTextField
来源：https://stackoverflow.com/questions/6190276/how-to-make-return-key-on-iphone-make-keyboard-disappear