javascript - 在 React Native 渲染文本组件中显示动画值

Question

我无法在渲染器上显示动画值并返回此错误。

Invariant Violation: Objects are not valid as a React child (found: object with keys {value}). If you meant to render a collection of children, use an array instead.

当然，我在console中看到了Value

constructor(props) {
    super(props);

    this.state={
       progress:0
    }

    this.animatedValue = new Animated.Value(0);

    this.animatedValue.addListener((progress) => {
        this.setState({progress})
    });
}

componentDidMount() {
    this.animate()
}

animate() {
    this.animatedValue.setValue(0);
    Animated.timing(
        this.animatedValue,
        {
            toValue: 1,
            duration: 15000,
            easing: Easing.linear
        }
    ).start()
}

render() {
    return(
        <View>
            <Text> {this.state.progress} </Text>
        </View>
    );

}

Answer 1

赋予 addListener 的函数将使用一个以 value 键作为参数的对象来调用，因此不用将 progress 设置为整个对象，请改用 value:

this.animatedValue.addListener((progress) => {
  this.setState({ progress: progress.value });
});