[android-components](../../index.md) / [mozilla.components.feature.readerview.view](../index.md) / [ReaderViewControlsBar](index.md) / [onFocusChanged](./on-focus-changed.md)

# onFocusChanged

`fun onFocusChanged(gainFocus: `[`Boolean`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html)`, direction: `[`Int`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, previouslyFocusedRect: <ERROR CLASS>?): `[`Unit`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) [(source)](https://github.com/mozilla-mobile/android-components/blob/master/components/feature/readerview/src/main/java/mozilla/components/feature/readerview/view/ReaderViewControlsBar.kt#L116)