You would need to access the native capabilities of the devices virtual keyboard.
Sadly this is different on every platform, each with their own unique way of handling such things.
You can either:
- Use one of the assets on the store for managing keyboards (there are a few), note however that not all support all platforms, so you may need a few.
- Build your own native interface for each platform
My recommendation however would be to control the UI yourself and have UI buttons on screen to control such behaviours. So have a Next button on screen, change it to an OK on full completion of the form, or have two separate buttons always visible as the user fills in the form.
Hope this helps.
Simon (Darkside) Jackson
@SimonDarksideJ