Keypad language change during runtime?

At runtime for the app, I want the user to be able to select the keypad language. And when the app is finished for 开发者_如何学运维it to switch back.

Thanks

You could not do it programmatically but there is one option is available in keyboard itself.

Go through the following post, will helpful for you

Change Your Keyboard or Display Language in iOS

Setting the iPhone keyboard language

I don't think that there is a programmatic way to enforce this. You can inplemet your own custom input if you want.