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copied!<p>I have done this. Basically you add your own button as a subview of the UIKeyboard like this:</p> <pre><code>// This function is called each time the keyboard is going to be shown - (void)keyboardWillShow:(NSNotification *)note { // Just used to reference windows of our application while we iterate though them UIWindow* tempWindow; // Because we cant get access to the UIKeyboard throught the SDK we will just use UIView. // UIKeyboard is a subclass of UIView anyways UIView* keyboard; // Check each window in our application for(int c = 0; c < [[[UIApplication sharedApplication] windows] count]; c ++) { // Get a reference of the current window tempWindow = [[[UIApplication sharedApplication] windows] objectAtIndex:c]; // Loop through all views in the current window for(int i = 0; i < [tempWindow.subviews count]; i++) { // Get a reference to the current view keyboard = [tempWindow.subviews objectAtIndex:i]; // From all the apps i have made, they keyboard view description always starts with <UIKeyboard so I did the following if([[keyboard description] hasPrefix:@"<UIKeyboard"] == YES) { // Only add the Decimal Button if the Keyboard showing is a number pad. (Set Manually through a BOOL) if (numberPadShowing && [keyboard viewWithTag:123] == nil) { // Set the Button Type. dot = [UIButton buttonWithType:UIButtonTypeCustom]; // Position the button - I found these numbers align fine (0, 0 = top left of keyboard) dot.frame = CGRectMake(0, 163, 106, 53); dot.tag = 123; // Add images to our button so that it looks just like a native UI Element. [dot setImage:[UIImage imageNamed:@"dotNormal.png"] forState:UIControlStateNormal]; [dot setImage:[UIImage imageNamed:@"dotHighlighted.png"] forState:UIControlStateHighlighted]; //Add the button to the keyboard [keyboard addSubview:dot]; // When the decimal button is pressed, we send a message to ourself (the AppDelegate) which will then post a notification that will then append a decimal in the UITextField in the Appropriate View Controller. [dot addTarget:self action:@selector(sendDecimal:) forControlEvents:UIControlEventTouchUpInside]; return; } else if (numberPadShowing && [keyboard viewWithTag:123]) { [keyboard bringSubviewToFront:dot]; } else if (!numberPadShowing) { for (UIView *v in [keyboard subviews]){ if ([v tag]==123) [v removeFromSuperview]; } } } } } } - (void)sendDecimal:(id)sender { // The decimal was pressed } </code></pre> <p>Hope that's clear. </p> <p>-Oscar</p>

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