Created
February 17, 2021 11:53
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Animated Toast/Notification in React Native
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import React, { | |
useEffect, | |
useRef, | |
useState, | |
} from 'react'; | |
import { | |
Animated, | |
Button, | |
Text, | |
View, | |
} from 'react-native'; | |
const getRandomMessage = () => { | |
const number = Math.trunc(Math.random() * 10000); | |
return 'Random message ' + number; | |
}; | |
const Message = (props) => { | |
const opacity = useRef(new Animated.Value(0)) | |
.current; | |
useEffect(() => { | |
Animated.sequence([ | |
Animated.timing(opacity, { | |
toValue: 1, | |
duration: 500, | |
useNativeDriver: true, | |
}), | |
Animated.delay(2000), | |
Animated.timing(opacity, { | |
toValue: 0, | |
duration: 500, | |
useNativeDriver: true, | |
}), | |
]).start(() => { | |
props.onHide(); | |
}); | |
}, []); | |
return ( | |
<Animated.View | |
style={{ | |
opacity, | |
transform: [ | |
{ | |
translateY: opacity.interpolate({ | |
inputRange: [0, 1], | |
outputRange: [-20, 0], | |
}), | |
}, | |
], | |
margin: 10, | |
marginBottom: 5, | |
backgroundColor: 'white', | |
padding: 10, | |
borderRadius: 4, | |
shadowColor: 'black', | |
shadowOffset: { | |
width: 0, | |
height: 3, | |
}, | |
shadowOpacity: 0.15, | |
shadowRadius: 5, | |
elevation: 6, | |
}} | |
> | |
<Text>{props.message}</Text> | |
</Animated.View> | |
); | |
}; | |
export default () => { | |
const [messages, setMessages] = useState([]); | |
return ( | |
<> | |
<View | |
style={{ | |
position: 'absolute', | |
top: 45, | |
left: 0, | |
right: 0, | |
}} | |
> | |
{messages.map((message) => ( | |
<Message | |
key={message} | |
message={message} | |
onHide={() => { | |
setMessages((messages) => | |
messages.filter( | |
(currentMessage) => | |
currentMessage !== message | |
) | |
); | |
}} | |
/> | |
))} | |
</View> | |
<Button | |
title="Add message" | |
onPress={() => { | |
const message = getRandomMessage(); | |
setMessages([...messages, message]); | |
}} | |
/> | |
</> | |
); | |
}; |
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