其它参考1

其它参考2

[**UIApplication sharedApplication] sendAction:@selector(resignFirstResponder) to:nil from:nil forEvent:nil];

UIApplication.shared.sendAction(#selector(resignFirstResponder), to: nil, from: nil, for: nil)

其它参考3

1. 在viewDidLoad中，注册以接收键盘通知并创建UITapGestureRecognizer:
   
   
   

   NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
   
   [nc addObserver:self selector:@selector(keyboardWillShow:) name:
   UIKeyboardWillShowNotification object:nil];
   
   [nc addObserver:self selector:@selector(keyboardWillHide:) name:
   UIKeyboardWillHideNotification object:nil];
   
   tapRecognizer = [**UITapGestureRecognizer alloc] initWithTarget:self
   action:@selector(didTapAnywhere:)];
   



2. 添加键盘显示/隐藏响应者。在那里你添加和删除TapGestureRecognizer到UIView，它应该在点击时解除键盘。注意:您不必将其添加到所有子视图或控件。
   
   
   

   -(void) keyboardWillShow:(NSNotification *) note {
       [self.view addGestureRecognizer:tapRecognizer];
   }
   
   -(void) keyboardWillHide:(NSNotification *) note
   {
       [self.view removeGestureRecognizer:tapRecognizer];
   }
   



3. TapGestureRecognizer会在点击时调用您的功能，您可以像这样关闭键盘:
   
   
   

   -(void)didTapAnywhere: (UITapGestureRecognizer*) recognizer {    
       [textField resignFirstResponder];
   }
   

其它参考4

- (void)viewDidLoad 
{
    [super viewDidLoad];

    username.delegate = self;
    password.delegate = self;
}

- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
    [textField resignFirstResponder];
    return YES;
}

其它参考5

[**UIApplication sharedApplication] becomeFirstResponder]
[**UIApplication sharedApplication] resignFirstResponder]

其它参考6

+ (void)dismissKeyboard {
    [self globalResignFirstResponder];
}

+ (void) globalResignFirstResponder {
    UIWindow * window = [**UIApplication sharedApplication] keyWindow];
    for (UIView * view in [window subviews]){
        [self globalResignFirstResponderRec:view];
    }
}

+ (void) globalResignFirstResponderRec:(UIView*) view {
    if ([view respondsToSelector:@selector(resignFirstResponder)]){
        [view resignFirstResponder];
    }
    for (UIView * subview in [view subviews]){
        [self globalResignFirstResponderRec:subview];
    }
}

其它参考7

- (void)dismissKeyboard 
{
    UITextField *tempTextField = [**[UITextField alloc] initWithFrame:CGRectZero] autorelease];
    tempTextField.enabled = NO;
    [myRootViewController.view addSubview:tempTextField];
    [tempTextField becomeFirstResponder];
    [tempTextField resignFirstResponder];
    [tempTextField removeFromSuperview];
}

其它参考8

[**view window] endEditing:YES];

其它参考9

其它参考10

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [textField resignFirstResponder];`
}

其它参考11

@interface someViewController : UIViewController <UITextFieldDelegate>

- (void)viewDidLoad
{
    // Do any additional setup after loading the view, typically from a nib.
    self.yourTextBox.delegate = self;
}

- (BOOL)textFieldShouldReturn:(UITextField *)theTextField 
{
    if (theTextField == yourTextBox) {
        [theTextField resignFirstResponder];
    }
    return YES;
}

其它参考12

- (void)viewDidLoad {
    //Keyboard stuff
    tapRecognizer = [**UITapGestureRecognizer alloc] initWithTarget:self action:@selector(didTapAnywhere:)];
    tapRecognizer.cancelsTouchesInView = NO;
    [self.view addGestureRecognizer:tapRecognizer];
}

- (void)handleSingleTap:(UITapGestureRecognizer *) sender
{
    [self.view endEditing:YES];
}

其它参考13

[**UIApplication sharedApplication].windows.firstObject endEditing:NO];

其它参考14

UIApplication.shared.sendAction(#selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil)

其它参考15

 // dismiss keyboard (mostly macro)
[**UIApplication sharedApplication].delegate dismissKeyboard]; // call this in your to app dismiss the keybaord

// --- dismiss keyboard (in indexAppDelegate.h) (mostly macro)
- (void)dismissKeyboard;

// --- dismiss keyboard (in indexAppDelegate.m) (mostly macro)
// do this from anywhere to dismiss the keybard
- (void)dismissKeyboard {    // from: http://stackoverflow.com/questions/741185/easy-way-to-dismiss-keyboard

    UITextField *tempTextField = [**UITextField alloc] initWithFrame:CGRectZero];

    UIViewController *myRootViewController = <#viewController#>; // for simple apps (INPUT: viewController is whatever your root controller is called.  Probably is a way to determine this progragrammatically)
    UIViewController *uivc;
    if (myRootViewController.navigationController != nil) { // for when there is a nav stack
        uivc = myRootViewController.navigationController;
    } else {
        uivc = myRootViewController;
    }

    if (uivc.modalViewController != nil) { // for when there is something modal
        uivc = uivc.modalViewController;
    } 

    [uivc.view  addSubview:tempTextField];

    [tempTextField becomeFirstResponder];
    [tempTextField resignFirstResponder];
    [tempTextField removeFromSuperview];
    [tempTextField release];

}

其它参考16

其它参考17

-(void)conformsToKeyboardDismissNotification{

    [**NSNotificationCenter defaultCenter] addObserver:self selector:@selector(dismissKeyBoard) name:KEYBOARD_DISMISS object:nil];
}

-(void)deConformsToKeyboardDismissNotification{

    [**NSNotificationCenter defaultCenter] removeObserver:self name:KEYBOARD_DISMISS object:nil];
}

- (void)dealloc{
    [**NSNotificationCenter defaultCenter] removeObserver:self];
    [self resignFirstResponder];
}

-(void)textFieldDidBeginEditing:(JCPTextField *)textField{
     [textField conformsToKeyboardDismissNotification];
}


- (void)textFieldDidEndEditing:(JCPTextField *)textField{
    [textField deConformsToKeyboardDismissNotification];
}

其它参考18

UIApplication.sharedApplication().sendAction("resignFirstResponder", to: nil, from: nil, forEvent: nil)

其它参考19

1. 当UITextField在UIScrollView 中时
   


2. 当UITextField在UIScrollView 之外时
   

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    [self.view endEditing:YES];
}

- (IBAction)tappedEvent:(id)sender {
      [self.view endEditing:YES];  }