Creating an In-App Keyboard for your Android Apps

Create an In-App Keyboard

Creating the layout file for the Keyboard

First, we need to create the layout file for the Keyboard. Our Keyboard is a custom compound view which will be inflated from the below XML layout file. This is an example of layout. You can use whatever layout you want to arrange the keys like you want. So, you can be creative with your In-App Keyboard.

Creating the layout of the Main Activity

To try our In-App Keyboard, we create a Main Activity with a dedicated layout. Our layout will have an EditText and our In-App Keyboard implementation at the bottom. Note that our implementation is called MyKeyboard.

Writing the Java code for the Keyboard

Next step is to write the Java code of our In-App Keyboard. Called MyKeyboard, our implementation extends the LinearLayout view and implements the OnClickListener interface to react to the users’ clicks.

Writing the Java code of the Main Activity

Last step is to write the Java code of the MainActivity for using our custom Keyboard. For System Keyboards, the Android SDK uses an InputMethodManager instance to point the keyboard to the focused EditText. In our example, the MainActivity will take its place by providing the link from the EditText to our custom Keyboard.

Our In-App Keyboard in Action !

Best part of the tutorial is coming. We are going to put our In-App Keyboard in Action. So, we launch our Android Application on a device. You should have the following result :

Our In-App Keyboard in Action !

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Sylvain Saurel

Sylvain Saurel

Entrepreneur / Developer / Blogger / Author. In Bitcoin We Trust: https://inbitcoinwetrust.substack.com/