keyboard not disappear when used resignFirstResponder in iOS - ios

Question

coding environment sierra 10.12，Xcode 8.1. Two textField in my roorView, if first textfield's text is nil, second textfield will can't be editing.When i used resignFirstResponder method to turn off keyboard in textFieldDidBeginEditing: method, keyboard not disappear. I add a fullscreen TapGesture in rootView. I'm very confused，anyone have ideas to help me deal with this problem?
`
#pragma mark -- UITextFieldDelegate
- (void)textFieldDidBeginEditing:(UITextField *)textField{
if (textField == self.password) {
[self.username resignFirstResponder];
NSString *name = self.username.text;
if ([name isEqualToString:#""]) {
[CFBlurHUD showFaild:#"sign in error!"];
[self performSelector:#selector(dismmiss) withObject:nil afterDelay:1.5f];
self.password.enabled = NO;
}
}
}
- (void)dismmiss{
[CFBlurHUD dismiss];
self.password.enabled = YES;
}
`

Answer 1

If you want to simply dismiss a keyboard from view, try the following:
self.view.endEditing = true;
use your UITextFieldDelegate methods specifically UITextFieldShouldBeginEditing and return NO and execute the code to show the popover instead. This way the keyboard is never shown to begin with
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
[self.view endEditing:YES];
return NO;
}

Answer 2

Because current textfiled is password: if (textField == self.password) {. But you set:
[self.username resignFirstResponder];
It 's not correct.
Try:
[self.username resignFirstResponder];
[self.password resignFirstResponder];
or :
self.view.endEditting = true;
use your UITextFieldDelegate methods specifically UITextFieldShouldBeginEditing and return NO and execute the code to show the popover instead. This way the keyboard is never shown to begin with
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
[self.view endEditing:YES];
return NO;
}

Answer 3

First step for dismiss keyboard Give textfeild delegate in storyboard
Or Also give by code :
self.txtName.delegate = self;
Dismiss keyboard when tap gesture method called:
- (void)dismmiss{
[self.view endEditing:YES];
[CFBlurHUD dismiss];
self.password.enabled = YES;
}
or Also Dismiss when touch anywhere in View:
-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
[self.view endEditing:YES];
}
Or when user press return button in keyboard:
-(BOOL)textFieldShouldReturn:(UITextField *)textField{
[textField resignFirstResponder];
return YES;
}