Created
September 23, 2022 05:29
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A React-Native view that shrinks and disappears when the keyboard opens
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import React, {useEffect, useRef} from 'react'; | |
import { | |
Keyboard, | |
Animated, | |
} from 'react-native'; | |
function KeyboardShrinkingView({ children, startHeight="100%", endHeight="0%" }) { | |
const scaleValue = useRef(new Animated.Value(0)).current; | |
const scaleOut = Animated.timing(scaleValue, { | |
toValue: 1, | |
duration: 100, | |
useNativeDriver: false, | |
}); | |
const scaleIn = Animated.timing(scaleValue, { | |
toValue: 0, | |
duration: 100, | |
useNativeDriver: false, | |
}); | |
useEffect(() => { | |
const keyboardDidShowListener = Keyboard.addListener( | |
'keyboardDidShow', | |
() => { | |
scaleOut.start(); | |
}, | |
); | |
const keyboardDidHideListener = Keyboard.addListener( | |
'keyboardDidHide', | |
() => { | |
scaleIn.start(); | |
}, | |
); | |
return () => { | |
keyboardDidHideListener.remove(); | |
keyboardDidShowListener.remove(); | |
}; | |
}, []); | |
return ( | |
<Animated.View | |
style={{ | |
height: scaleValue.interpolate({ | |
inputRange: [0, 1], | |
outputRange: [startHeight, endHeight], | |
}), | |
opacity: scaleValue.interpolate({ | |
inputRange: [0, 1], | |
outputRange: [1, 0], | |
}), | |
marginVertical: 10, | |
}} | |
> | |
{children} | |
</Animated.View> | |
); | |
} | |
export default KeyboardShrinkingView; |
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