done button only for numberpad keyboard

Question

I am working on the iPhone application. I have four textfields in one of the view. In these four textfield I have one textfield in which there will be use of numberpad keybo

Answer 1

Put this code in your project and just set iboutlet of text field.It have some unused methods too but you can get your choice of done button using that.Then you will remove unused methods.This is just for Get Done button on number pad keyboard

.H file

@interface aaaViewController : UIViewController
{
IBOutlet UITextField *txthello;
UIImage *numberPadDoneImageNormal;
UIImage *numberPadDoneImageHighlighted;
UIButton *numberPadDoneButton;

}

@property (nonatomic, retain) UIImage *numberPadDoneImageNormal;
@property (nonatomic, retain) UIImage *numberPadDoneImageHighlighted;
@property (nonatomic, retain) UIButton *numberPadDoneButton;

.M File

- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];

// Add listener for keyboard display events
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 3.2) {
    [[NSNotificationCenter defaultCenter] addObserver:self 
                                             selector:@selector(keyboardDidShow:) 
                                                 name:UIKeyboardDidShowNotification 
                                               object:nil];     
} else {
    [[NSNotificationCenter defaultCenter] addObserver:self 
                                             selector:@selector(keyboardWillShow:) 
                                                 name:UIKeyboardWillShowNotification 
                                               object:nil];
}

// Add listener for all text fields starting to be edited
[[NSNotificationCenter defaultCenter] addObserver:self 
                                         selector:@selector(textFieldDidBeginEditing:)
                                             name:UITextFieldTextDidBeginEditingNotification 
                                           object:nil];
}

- (void)viewWillDisappear:(BOOL)animated {
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 3.2) {
    [[NSNotificationCenter defaultCenter] removeObserver:self 
                                                    name:UIKeyboardDidShowNotification 
                                                  object:nil];      
} else {
    [[NSNotificationCenter defaultCenter] removeObserver:self 
                                                    name:UIKeyboardWillShowNotification 
                                                  object:nil];
}
[[NSNotificationCenter defaultCenter] removeObserver:self 
                                                name:UITextFieldTextDidBeginEditingNotification 
                                              object:nil];
[super viewWillDisappear:animated];
}

- (UIView *)findFirstResponderUnder:(UIView *)root {
if (root.isFirstResponder)
    return root;    
for (UIView *subView in root.subviews) {
    UIView *firstResponder = [self findFirstResponderUnder:subView];        
    if (firstResponder != nil)
        return firstResponder;
}
return nil;
}

- (UITextField *)findFirstResponderTextField {
UIResponder *firstResponder = [self findFirstResponderUnder:[self.view window]];
if (![firstResponder isKindOfClass:[UITextField class]])
    return nil;
return (UITextField *)firstResponder;
}

- (void)updateKeyboardButtonFor:(UITextField *)textField {

// Remove any previous button
[self.numberPadDoneButton removeFromSuperview];
self.numberPadDoneButton = nil;

// Does the text field use a number pad?
if (textField.keyboardType != UIKeyboardTypeNumberPad)
    return;

// If there's no keyboard yet, don't do anything
if ([[[UIApplication sharedApplication] windows] count] < 2)
    return;
UIWindow *keyboardWindow = [[[UIApplication sharedApplication] windows] objectAtIndex:1];

// Create new custom button
self.numberPadDoneButton = [UIButton buttonWithType:UIButtonTypeCustom];
self.numberPadDoneButton.frame = CGRectMake(0, 163, 106, 53);
self.numberPadDoneButton.adjustsImageWhenHighlighted = FALSE;
[self.numberPadDoneButton setTitle:@"Return" forState:UIControlStateNormal];
//  [self.numberPadDoneButton setFont:[UIFont boldSystemFontOfSize:18]];
[self.numberPadDoneButton setTitleColor:[UIColor colorWithRed:77.0f/255.0f green:84.0f/255.0f blue:98.0f/255.0f alpha:1.0] forState:UIControlStateNormal];  

[self.numberPadDoneButton setImage:self.numberPadDoneImageNormal forState:UIControlStateNormal];
[self.numberPadDoneButton setImage:self.numberPadDoneImageHighlighted forState:UIControlStateHighlighted];
[self.numberPadDoneButton addTarget:self action:@selector(numberPadDoneButton:) forControlEvents:UIControlEventTouchUpInside];

// Locate keyboard view and add button
NSString *keyboardPrefix = [[[UIDevice currentDevice] systemVersion] floatValue] >= 3.2 ? @"