KeyboardController

The KeyboardController module in React Native provides a convenient set of methods for managing the behavior of the keyboard. With seamless runtime adjustments, this module allows developers to dynamically change the windowSoftInputMode on Android and dismiss the keyboard on both platforms.

Methods

setInputMode

This method is used to dynamically change the windowSoftInputMode (softwareKeyboardLayoutMode in Expo terminology) during runtime in an Android application. It takes an argument that specifies the desired input mode. The example provided sets the input mode to SOFT_INPUT_ADJUST_RESIZE:

KeyboardController.setInputMode(AndroidSoftInputModes.SOFT_INPUT_ADJUST_RESIZE);

Understanding how different modes works

To understand the difference between adjustResize/adjustPan/adjustNothing behavior you can look into this post.

info

A combination of adjustResize + edge-to-edge mode will result in behavior similar to adjustNothing - in this case window is not resized automatically and content is not moved along with the keyboard position. And it becomes a responsibility of developer to handle keyboard appearance (thus it'll match iOS behavior).

setDefaultMode

This method is used to restore the default windowSoftInputMode (softwareKeyboardLayoutMode in Expo terminology) declared in the AndroidManifest.xml (or app.json in Expo case). It resets the input mode to the default value:

KeyboardController.setDefaultMode();

dismiss

This method is used to hide the keyboard. It triggers the dismissal of the keyboard:

KeyboardController.dismiss();

What is the difference comparing to react-native implementation?

The equivalent method from react-native relies on specific internal components, such as TextInput, and may not work as intended if a custom input component is used.

In contrast, the described method enables keyboard dismissal for any focused input, extending functionality beyond the limitations of the default implementation.

setFocusTo

This method sets focus to the selected field. Possible values:

• prev - set focus to the previous field;
• current - set focus to the last focused field (i. e. if keyboard was closed you can restore focus);
• next - set focus to the next field.

setFocusTo("next");