Question

I have a textfield, in which I need the user to type only numeric values. I am using the numeric keypad type. In this keyboard there no done button. I saw an article here
which allowed me to add a done button to the keypad.

I can’t hide that, however. Here is my code

- (void)addButtonToKeyboard {
    // create custom button
    UIButton *doneButton = [UIButton buttonWithType:UIButtonTypeCustom];
    doneButton.frame = CGRectMake(0, 163, 106, 53);
    doneButton.adjustsImageWhenHighlighted = NO;
    if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 3.0) {
        [doneButton setImage:[UIImage imageNamed:@"DoneUp3.png"] forState:UIControlStateNormal];
        [doneButton setImage:[UIImage imageNamed:@"DoneDown3.png"] forState:UIControlStateHighlighted];
    } else {        
        [doneButton setImage:[UIImage imageNamed:@"DoneUp.png"] forState:UIControlStateNormal];
        [doneButton setImage:[UIImage imageNamed:@"DoneDown.png"] forState:UIControlStateHighlighted];
    }
    [doneButton addTarget:self action:@selector(doneButton:) forControlEvents:UIControlEventTouchUpInside];
    // locate keyboard view
    UIWindow* tempWindow = [[[UIApplication sharedApplication] windows] objectAtIndex:1];
    UIView* keyboard;
    for(int i=0; i<[tempWindow.subviews count]; i++) {
        keyboard = [tempWindow.subviews objectAtIndex:i];
        // keyboard found, add the button
        if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 3.2) {
            if([[keyboard description] hasPrefix:@"<UIPeripheralHost"] == YES)
                [keyboard addSubview:doneButton];
        } else {
            if([[keyboard description] hasPrefix:@"<UIKeyboard"] == YES)
                [keyboard addSubview:doneButton];
        }
    }
}

- (void)keyboardWillShow:(NSNotification *)note {
    // if clause is just an additional precaution, you could also dismiss it
    if ([[[UIDevice currentDevice] systemVersion] floatValue] < 3.2) {
        [self addButtonToKeyboard];
    }
}

- (void)keyboardDidShow:(NSNotification *)note {
    // if clause is just an additional precaution, you could also dismiss it
    if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 3.2) {
        [self addButtonToKeyboard];
    }
}
    - (void)doneButton:(id)sender {
        NSLog(@"doneButton");
       [anualIncome setText:@"hai"];
        NSLog(@"Input: %@", anualIncome.text);
        [anualIncome resignFirstResponder];

    }

kindly guide me where i’m doing wrong.when i press the done button i can see the console output like this

Hello World[2542:f803] doneButton
Hello World[2542:f803] Input: (null)

i just add my anualincome in to the my veiwconroller.is there any other action should add?this is my outlet

@property(nonatomic, retain) IBOutlet UITextField *anualIncome;

Answer 1

Without using done button you can hide keyboard this way:

Implement touches began method in your viewContoller class like this:

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