I'm working in a custom `keyboard` `(iOS App Extension)`. I have a `UICollectionView` in my `Keyboard` `Layout`, so when one `item` is selected I want to show a `message` (`UIAlerView` for example).

Here is my code:

```
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{

 ...

UIAlertController * alert=   [UIAlertController
                              alertControllerWithTitle:@"My Title"
                              message:@"Enter User Credentials"
                              preferredStyle:UIAlertControllerStyleAlert];
[self presentViewController:alert animated:YES completion:nil];
}

```

I get this error: `'Feature not available in extensions of type com.apple.keyboard-service'`

So...is there any way to show a `message` from an `App Extension`?

**EDIT:**

Here is an example. The `IKEA Emoticons Keyboard` shows a message (like an `Android Toast` after selecting one item).

I also have tried this library:

[iOS Toast Library](https://github.com/scalessec/Toast)

![enter image description here](https://i.stack.imgur.com/RDFOB.png)
['https://Stackoverflow.com/questions/29825154', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/2274847/']
Finally I solved the problem. It's not the best solution, but at least I get the effect that I wanted.

I've created a `View` simulating a `Toast` in the `xib` file and set it to `hidden`.

When the item is selected, I show the "faked" `Toast` for 2 seconds and hide it again.

```
self.popUpView.hidden = NO;

dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, 2.0 * NSEC_PER_SEC);
dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
    self.popUpView.hidden = YES;
});

```

I don't know if it's a good solution, but I really had to find a solution for that. 

For Swift you can use this :

```
self.popUpView.isHidden = false
    DispatchQueue.main.asyncAfter(deadline: .now() + 2.0) {
        self.popUpView.isHidden = true
    }

```
Sad to say that, but there's no way to show a UIAlertView in keyboard extension. Actually, nothing above the frame of InputViewController can be showed. It's pretty clear in the Apple's doc:

> 
> ...a custom keyboard can draw only within the primary view of its UIInputViewController object... it is not possible to display key artwork above the top edge of a custom keyboard’s primary view, as the system keyboard does on iPhone when you tap and hold a key in the top row.
> 
> 
> 

As for message inside the keyboard, there are some useful libraries that can help us with it. For example <https://github.com/scalessec/Toast> and <https://github.com/sergeylenkov/PTHintController>.