Problem with Custom Keyboard in iPhone when you update grade to OS4.0

I use this code until upgrade to OS4.0 and then my custom keyboard not show it again. have any suggestion !? Thanks

(void)keyboardWillShow:(NSNotification *)notification { for (UIWindow *keyboardWindow in [[UIApplication sharedApplication] windows]) {
```
// Now iterating over each subview of the available windows
for (UIView *keyboard in [keyboardWindow subviews]) {


// Check to see if the description of the view we have referenced is UIKeyboard.
// If so then we found the keyboard view that we were looking for.
if([[keyboard description] hasPrefix:@"&lt;UIKeyboard"] == YES) {
```
NSValue *v = [[notification userInfo] valueForKey:UIKeyboardBoundsUserInfoKey]; CGRect kbBounds = [v CGRectValue];

if(keyboardToolbar == nil) { keyboardToolbar = [[UIToolbar alloc] initWithFrame:CGRectZero]; keyboardToolbar.barStyle = UIBarStyleBlackTranslucent;

UIBarButtonItem *barButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Done" style:UIBarButtonItemStyleBordered target:self action:@selector(textFieldDoneEditing)]; UIBarButtonItem *flex = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil]; NSArray *items = [[NSArray alloc] initWithObjects:flex, barButtonItem, nil]; [keyboardToolbar setItems:items]; [items release]; }

[keyboardToolbar removeFromSuperview]; keyboardToolbar.frame = CGRectMake(0, 0, kbBounds.size.width, 30); [keyboard addSubview:keyboardToolbar]; keyboard.bounds = CGRectMake(kbBounds.origin.x, kbBounds.origin.y, kbBounds.size.width, kbBounds.size.height + 60);

for(UIView* subKeyboard in [keyboard subviews]) { if([[subKeyboard description] hasPrefix:@" } } } } }

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Problem with Custom Keyboard in iPhone when you update grade to OS4.0

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