Custom keyboard and xib coding

We are making custom keyboards.

1.I have created a keyboard project.

2.I created a custom keyboard file through the target.

3.I can add my keyboard to the system keyboard settings through the simulator.

4.When I open my keyboard in the simulator, nothing happens.

5.I have created a xib file.

6.I added a key image created by adding a media file to the custom keyboard folder and made it into a button.

7.I added it to xib, but the key doesn't show up in the simulator.

8.I'm trying to code by connecting my new button to the view, but the drag doesn't work at all.

9.I have no idea what files to create afterwards and how to code them.

10.I have created an image of a button A and I want it to show on my custum keyboard, and I want it to type A when I press that button.

Custom keyboard and xib coding
 
 
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