We have managed to Dismiss keyboard from UITextField in response to ‘return’ in keyboard .

But unfortunately, the same trick wont be useful when working with UITextView.

UITextViewDelegate does not have such a method to be delegated. Below is the list of optional methods for UITextViewDelegate

@protocol UITextViewDelegate <NSObject>

@optional

- (BOOL)textViewShouldBeginEditing:(UITextView *)textView;

- (BOOL)textViewShouldEndEditing:(UITextView *)textView;

- (void)textViewDidBeginEditing:(UITextView *)textView;

- (void)textViewDidEndEditing:(UITextView *)textView;

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text;

- (void)textViewDidChange:(UITextView *)textView;

- (void)textViewDidChangeSelection:(UITextView *)textView;

@end

After staring at them for a while, it dawned that shouldChangeTextInRange could be our rescue.

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text

{

if([text isEqualToString:@"\n"])

{

[textView resignFirstResponder];

return FALSE;

}

return TRUE;

}

Lets say you have  a UI with a UITexttField and a UIButton which does some action on the text you entered.

If the user can see the Button while the keyboard is up, its all well and good!

But what if the button gets under the keyboard and you dont have the ScrollView capability to push up the button in viewport?

I had run into such a situation and the trick i used was handling the optional delegate method  textFieldShouldReturn

1. In the header file of your viewcontroller, state that it conforms to UITextFieldDelegate

@interface myViewController : UIViewController <UITextFieldDelegate>

{

IBOutlet UITextField* myTextField;

IBOutlet UIButton* myButton;

}

- (IBAction) click;

@end

2. Tell the textfield that your viewcontroller is the delegate (preferably in viewDidLoad)

- (void)viewDidLoad

{

[super viewDidLoad];

myTextField.delegate = self;

}

3. Finally implement the optional delegate method as

- (BOOL)textFieldShouldReturn:(UITextField *)textField {

[textField resignFirstResponder];

return NO;

}