如何在 UIWebView 上使用“上一个”和“下一个”和“完成”按钮删除键盘栏？ [复制]

Question

可能重复：
how to remove prev next button from virtual keyboard IOS

我在我的UIWebView 中打开键盘，但按照UIWebView 的默认结构，我在键盘顶部获得了带有Previous、Next 和Done button 的Bar。

它在我的应用程序中占用了很多空间，所以我想删除那个栏。

我怎样才能删除那个栏？

Answer 1

Register for notification on keyboard showing:

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
Then:

- (void)removeBar
{
    // Locate non-UIWindow.
    UIWindow *keyboardWindow = nil;
    for (UIWindow *testWindow in [[UIApplication sharedApplication] windows])
    {
        if (![[testWindow class] isEqual:[UIWindow class]])
        {
            keyboardWindow = testWindow;
            break;
        }
    }

    // Locate UIWebFormView.
    for (UIView *possibleFormView in [keyboardWindow subviews])
    {
        // iOS 5 sticks the UIWebFormView inside a UIPeripheralHostView.
        if ([[possibleFormView description] rangeOfString:@"UIPeripheralHostView"].location != NSNotFound)
        {
            for (UIView *subviewWhichIsPossibleFormView in [possibleFormView subviews])
            {
                if ([[subviewWhichIsPossibleFormView description] rangeOfString:@"UIWebFormAccessory"].location != NSNotFound)
                {
                    [subviewWhichIsPossibleFormView removeFromSuperview];
                }
            }
        }
        else if ([[possibleFormView description] rangeOfString:@"UIImageView"].location != NSNotFound)
        {
            [possibleFormView removeFromSuperview]; //remove shadow above bar. If it doesn't remove shadow then set possibleFormView's frame as CGRectZero
        }
    }
}