动画：`useNativeDriver` 未指定 ReactNativeBase 输入问题

Question

我今天（2020 年 4 月 3 日）创建了一个新的 react-native 项目并添加了一个原生基础。然后我尝试使用浮动标签添加输入。它给出了一条警告消息：动画：useNativeDriver 未指定。这是一个必需选项，必须明确设置为true 或false。如果我删除了浮动标签属性或将其更改为stackedLabel，则警告消失了。在出现此警告时，onChangeText 并未被调用。

组件文件

import React from 'react';
import {
  SafeAreaView,
  ScrollView,
  StatusBar,
  StyleSheet,
  View,
} from 'react-native';

import {Input, Item, Label} from 'native-base';

import {Colors} from 'react-native/Libraries/NewAppScreen';

declare var global: {HermesInternal: null | {}};

const App = () => {
  return (
    <>
      <StatusBar barStyle="dark-content" />
      <SafeAreaView>
        <ScrollView
          contentInsetAdjustmentBehavior="automatic"
          style={styles.scrollView}>
          <View style={styles.body}>
            <Item floatingLabel>
              <Label>Test</Label>
              <Input onChangeText={text => console.log(text)} />
            </Item>
          </View>
        </ScrollView>
      </SafeAreaView>
    </>
  );
};

package.json

{
  "name": "formtest",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "android": "react-native run-android",
    "ios": "react-native run-ios",
    "start": "react-native start",
    "test": "jest",
    "lint": "eslint . --ext .js,.jsx,.ts,.tsx"
  },
  "dependencies": {
    "native-base": "^2.13.12",
    "react": "16.11.0",
    "react-native": "0.62.0"
  },
  "devDependencies": {
    "@babel/core": "^7.6.2",
    "@babel/runtime": "^7.6.2",
    "@react-native-community/eslint-config": "^1.0.0",
    "@types/jest": "^24.0.24",
    "@types/react-native": "^0.62.0",
    "@types/react-test-renderer": "16.9.2",
    "@typescript-eslint/eslint-plugin": "^2.25.0",
    "@typescript-eslint/parser": "^2.25.0",
    "babel-jest": "^24.9.0",
    "eslint": "^6.5.1",
    "jest": "^24.9.0",
    "metro-react-native-babel-preset": "^0.58.0",
    "react-test-renderer": "16.11.0",
    "prettier": "^2.0.2",
    "typescript": "^3.8.3"
  },
  "jest": {
    "preset": "react-native",
    "moduleFileExtensions": [
      "ts",
      "tsx",
      "js",
      "jsx",
      "json",
      "node"
    ]
  }
}   

Answer 1

似乎是当前 nativebase.io 版本的一个已知错误：https://github.com/GeekyAnts/NativeBase/issues/3109

附加信息，问题到底是什么：https://reactnative.dev/blog/2017/02/14/using-native-driver-for-animated#how-do-i-use-this-in-my-app

Answer 2

只需在文件夹 ~\node_modules\native-base\dist\src\basic\ 上搜索 animated.timing 并手动添加 useNativeDriver: true or false

Answer 3

只需将useNativeDriver: true 添加到动画配置中即可。

const [animatePress, setAnimatePress] = useState(new Animated.Value(1))

const animateIn = () => {
  Animated.timing(animatePress, {
    toValue: 0.5,
    duration: 500,
    useNativeDriver: true // Add This line
  }).start();
}

更新

解决方案：

正如警告所说，我们需要明确指定useNativeDriver 选项并将其设置为true 或false。

1-动画方法

参考Animated doc，有动画类型或合成功能，例如Animated.decay()，Animated.timing()， Animated.spring()，Animated.parallel()，Animated.sequence()，指定useNativeDriver。

Animated.timing(this.state.animatedValue, {
  toValue: 1,
  duration: 500,
  useNativeDriver: true, // Add this line
}).start();

2- 动画组件

Animated 使用上述包装器导出以下动画组件：

• Animated.Image
• Animated.ScrollView
• Animated.Text
• Animated.View
• Animated.FlatList
• Animated.SectionList

使用 Animated.event() 时，将 useNativeDriver: false/true 添加到动画配置中。

<Animated.ScrollView
  scrollEventThrottle={1}
  onScroll={Animated.event(
    [{ nativeEvent: { contentOffset: { y: this.state.animatedValue } } }],
    { useNativeDriver: true } // Add this line
  )}
>
  {content}
</Animated.ScrollView>

Answer 4

这主要是找到 Animated.timing 或 Animated.spring 的所有实例并添加 useNativeDriver：对配置正确。

Answer 5

使用类 Component 只需在 componentDidMount() 中添加 Animated.timing 并将 useNativeDriver 定义为 true 或 false

class App extends Component {

    animatedValue = new Animated.Value(0);

    componentDidMount() {
        Animated.timing(this.animatedValue,
            {
                toValue: 1,
                duration: 1000,
                useNativeDriver: true
            }).start();
    }

    render() {
        return (
            <View style={styles.container}>
                <View style={styles.squareBG}/>
                <Animated.View style={[styles.square, {opacity: this.animatedValue}]}/>
            </View>
        );
    }
}

Answer 6

我刚刚在我的App.js 中添加了这个并为我工作:)

import { YellowBox } from 'react-native';

YellowBox.ignoreWarnings([
  'Animated: `useNativeDriver` was not specified.',
]);

Answer 7

长期以来一直面临同样的问题，到 2021 年仍然没有来自原生开发者的更新。

同时使用解决方法来避免useNativeDriver 的黄色警告。

更新 RN V0.63 以上

YellowBox 现在已更改并替换为 LogBox

功能性

import React, { useEffect } from 'react';
import { LogBox } from 'react-native';

useEffect(() => {
    LogBox.ignoreLogs(['Animated: `useNativeDriver`']);
}, [])

基于类

import React from 'react';
import { LogBox } from 'react-native';

componentDidMount() {
    LogBox.ignoreLogs(['Animated: `useNativeDriver`']);
}

在下面更新 RN V0.63

功能性

import React, { useEffect } from 'react';
import { YellowBox } from 'react-native';

useEffect(() => {
    YellowBox.ignoreWarnings(['Animated: `useNativeDriver`']);
}, [])

基于类

import React from 'react';
import { YellowBox } from 'react-native';

componentDidMount() {
    YellowBox.ignoreWarnings(['Animated: `useNativeDriver`']);
}

Answer 8

当使用Animated.spring 或任何其他动画时，指定useNativeDriver: true of useNativeDriver: false。

例子：

Animated.spring(this.position, {
    toValue: { x: 0, y: 0 },
    useNativeDriver: true,
}).start();

Animated.spring 在onPanResponderRelease 函数中被调用。

Answer 9

在 react native SDK 39 中，您必须编写以下代码：

LogBox.ignoreLogs(['Animated: `useNativeDriver` was not specified.']);

Answer 10

使用以下代码避免usenativedriver的警告信息

  Animated.timing(new Animated.Value(0), 
        {
          toValue: 1,
          duration: 500,
          easing: Easing.linear,
          useNativeDriver: false //make it as false
        }).start();

Answer 11

native-base 在 1 月份修复了这个问题。至少获得 v2.15.2

yarn add native-base@^2.15.2

发行说明：https://github.com/GeekyAnts/NativeBase/releases/tag/v2.15.2