I'm new to iOS development & facing an Issue while developing a custom keyboard iOS devices.

The problem is as follows:

After adding keyboard extension to my app I added a TextView to Main.storyboard and then I ran my app on an iPhone 5 simulator.

For adding my custom keyboard to available keyboards list I went to Settings>General>Keyboards>Add Keyboard & here I added my custom keyboard but when I'm returning back to my app and trying to select my custom keyboard by long pressing the globe icon, my custom keyboard has not been shown there.

What's the matter here?

Please reply & I'm sorry for no code as I haven't coded any yet.

Thanks in advance