ios 隐藏键盘的toolbar H5键盘

// 因为原生键盘如果不额外设置，toolbar本来就是不出现的，
而H5页面调起的键盘默认toolbar默认是出现的，有的时候键盘太高会遮住输入框，所以需要隐藏掉这部分。

    //** 隐藏webview键盘的toolbar(wkwebview和uiwebview通用)
    // 在加载页面时加入监听键盘出来的通知
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(willshowKeyBoardClick) name:UIKeyboardWillShowNotification object:nil];
    // 页面消失时移除监听
    [[NSNotificationCenter defaultCenter] removeObserver:self];

// 键盘弹起监听
- (void)willshowKeyBoardClick{
    NSArray *arr = [UIApplication sharedApplication].windows;
    for (NSInteger i = 0; i < arr.count; i++) {
        if ([arr[i] isKindOfClass:[NSClassFromString(@"UITextEffectsWindow") class]]) {
            if (![arr[i] isKindOfClass:[NSClassFromString(@"UIRemoteKeyboardWindow") class]]) {
                UIWindow *window = arr[i];
                UIView *view = [window.rootViewController.view.subviews lastObject];
                if (view.subviews.count > 1) {
                    for (NSInteger j = 0;j < view.subviews.count; j++) {
                        if ([view.subviews[j] isKindOfClass:NSClassFromString(@"UIKBInputBackdropView")] ||
                            [view.subviews[j] isKindOfClass:NSClassFromString(@"UIWebFormAccessory")]) {
                            UIView *subView = view.subviews[j];
                            subView.alpha = 0.0;
                        }
                    }
                    break;
                }
            }
        }
    }
}