[React Native] Animate Styles of a React Native View with Animated.timing

In this lesson we will use Animated.timing to animate the opacity and height of a View in our React Native application. This function has attributes that you can set such as easing and duration.

import React, {Component} from 'react';
import {Text, View, StyleSheet, Image, Animated, Easing} from 'react-native';

var styles = StyleSheet.create({
container: {
backgroundColor: '#48BBEC',
paddingBottom: 10
},
name: {
alignSelf: 'center',
fontSize: 21,
marginTop: 10,
marginBottom: 5,
color: 'white'
},
handle: {
alignSelf: 'center',
fontSize: 16,
color: 'white'
},
image: {
height: 125,
width: 125,
borderRadius: 65,
marginTop: 10,
alignSelf: 'center'
}
});

class Badge extends React.Component {
constructor(props){
super(props);
this.state = {
fadeAnim: new Animated.Value(0),
bounceAnim: new Animated.Value(0)
}
}
componentDidMount() {
Animated.timing(
this.state.fadeAnim,
{toValue: 1, duration: 2000}
).start();
Animated.timing(
this.state.bounceAnim,
{toValue: 1, duration: 2000, easing: Easing.bounce}
).start();
}
render(){
const animatedTextStyle = {
opacity: this.state.fadeAnim,
};
const animateImageStyle = {
opacity: this.state.bounceAnim
};
return (
<View style={styles.container}>
<Animated.Image style={[styles.image, animateImageStyle]} source={{uri: this.props.userInfo.avatar_url}}></Animated.Image>
<Animated.Text style={[styles.name,animatedTextStyle]}> {this.props.userInfo.name} </Animated.Text>
<Animated.Text style={[styles.handle, animatedTextStyle]}> {this.props.userInfo.login} </Animated.Text>
</View>
)
}
}

/**
* Make sure when when user the Badge component, the userInfo object is there
* @type {{userInfo: *}}
*/
Badge.propTypes = {
userInfo: React.PropTypes.object.isRequired
};

module.exports=Badge;