I am working on a React Native Project, I want to move the label along with the slider value. I tried many ways but its not working accurately. Here is my code:
import React, { useState } from 'react'
import { Text, StyleSheet, View, Dimensions } from 'react-native'
import Slider from '@react-native-community/slider';
function LabelSlider() {
const windowWidth = Dimensions.get('window').width;
const [value, setValue] = useState(0)
// const left = value * (windowWidth-60)/85;
const [showValue, setShowValue] = useState(false)
//var percent = (percentToGet / 100) * number;
return (
<View>
{showValue ?
<View >
<Text style={{ width:50, textAlign: 'auto', left: value}}>{value}</Text>
</View> :
<></>}
<Slider
style={{ width: 200, height: 40 }}
maximumValue={300}
minimumValue={0}
step={1}
value={value}
onValueChange={(value) => setValue(value)}
onSlidingStart={() => setShowValue(true)}
onSlidingComplete={() => setShowValue(true)}
minimumTrackTintColor="#FFFFFF"
maximumTrackTintColor="#000000"
/>
</View>
)
}
export { LabelSlider }
I have also attached two images of the output I was able to get: Image 1, Image 2
You can use a shared value and interpolate the left position for the label. Right now what happens is, that the left value goes from 0 to 300. This makes the label unresponsive. You can do something as shown below.
Also, here's a Snack for the implementation.
import * as React from 'react';
import { Text, View, StyleSheet } from 'react-native';
import Slider from '@react-native-community/slider';
import Animated, {
useSharedValue,
useAnimatedStyle,
interpolate,
Extrapolate,
} from 'react-native-reanimated';
// Constants
const MAX_SLIDER_VALUE = 300;
const MIN_SLIDER_VALUE = 0;
const SLIDER_WIDTH = 200;
export default function App() {
// State to store progress value of slider
const [value, setValue] = React.useState(0);
// Shared value for storing label position
const progress = useSharedValue(0);
// Whenever `value` changes, update the progress shared value
// This will accordingly update the left position of the label
React.useEffect(() => {
progress.value = value;
}, [value]);
// Animate the left position according to the shared value
// Also Extrapolate it so that it doesn't exceed 100%
const animatedStyle = useAnimatedStyle(() => {
const leftPosition = interpolate(
progress.value,
[MIN_SLIDER_VALUE, MAX_SLIDER_VALUE],
[0, 100],
Extrapolate.CLAMP
);
return {
left: `${leftPosition}%`,
};
});
return (
<View style={styles.container}>
<View style={{ width: SLIDER_WIDTH }}>
<Animated.View style={[styles.labelView, animatedStyle]}>
<Text>{value}</Text>
</Animated.View>
<Slider
style={{ width: SLIDER_WIDTH, height: 40 }}
maximumValue={MAX_SLIDER_VALUE}
minimumValue={MIN_SLIDER_VALUE}
step={1}
value={value}
onValueChange={setValue}
minimumTrackTintColor="#FFFFFF"
maximumTrackTintColor="#000000"
/>
</View>
</View>
);
}
const styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#ecf0f1',
padding: 8,
},
labelView: {
marginBottom: 20,
},
});
You can use react native element slider for this, I have given the example code below
import React from 'react';
import { View } from 'react-native';
import {Slider} from 'react-native-elements';
const App = () => {
return (
<View
style={{
flex: 1,
justifyContent: "center",
}}>
<Slider
thumbStyle={{height: 15, width: 15, backgroundColor: 'orange'}}
maximumTrackTintColor="grey"
minimumTrackTintColor="orange"
thumbProps={{
children: (
<View
style={{
color: 'green',
marginTop: -22,
width: 100,
}}>
<Text>Value</Text>
</View>
),
}}
/>
</View>
)
}
export default App;