export default class AnimationGroupScene extends Component {

    constructor() {

        super()

        this.animatedValue1 = new Animated.Value()

        this.animatedValue2 = new Animated.Value()

        this.animatedValue3 = new Animated.Value()

    }

    componentDidMount() {

        this.animate()

    }

    animate() {

        this.animatedValue1.setValue()

        this.animatedValue2.setValue()

        this.animatedValue3.setValue()

        const createAnimation = function (value, duration, easing, delay = ) {

            return Animated.timing(

                value,

                {

                    toValue: ,

                    duration,

                    easing,

                    delay

                }

            )

        }

        Animated.parallel([

            createAnimation(this.animatedValue1, , Easing.ease),

            createAnimation(this.animatedValue2, , Easing.ease, ),

            createAnimation(this.animatedValue3, , Easing.ease, )

        ]).start()

    }

    render() {

        const scaleText = this.animatedValue1.interpolate({

            inputRange: [, ],

            outputRange: [0.5, ]

        })

        const spinText = this.animatedValue2.interpolate({

            inputRange: [, ],

            outputRange: ['0deg', '720deg']

        })

        const introButton = this.animatedValue3.interpolate({

            inputRange: [, ],

            outputRange: [-, ]

        })

        return (

            <View style={styles.container}>

                <Animated.View

                    style={{transform: [{scale: scaleText}]}}>

                    <Text>Welcome</Text>

                </Animated.View>

                <Animated.View

                    style={{marginTop: , transform: [{rotate: spinText}]}}>

                    <Text

                        style={{fontSize: }}>

                        to the App!

                    </Text>

                </Animated.View>

                <Animated.View

                    style={{top: introButton, position: 'absolute'}}>

                    <TouchableHighlight

                        onPress={this.animate.bind(this)}

                        style={styles.button}>

                        <Text>启动组动画</Text>

                    </TouchableHighlight>

                </Animated.View>

            </View>

        );

    }

}

const styles = StyleSheet.create({

    container: {

        flex: ,

        marginTop: ,

        justifyContent: 'center',

        alignItems: 'center',

    },

    button: {

        marginTop: ,

        backgroundColor: '#808080',

        height: ,

        width: ,

        borderRadius: ,

        justifyContent: 'center',

        alignItems: 'center',

    },

});