错误 react-native-video：未定义不是一个对象（评估'RCTVideoInstance.Constants'）
2020-05-05
8229
我想在我的应用中使用 react-native-video。但是，我所做的不起作用：
-
我使用
expo init Project1创建了一个新项目 -
然后我安装了 react-native-video：
npm install --save react-native-video -
然后我使用了这个：
react-native link react-native-video
我目前只有 App.js：
import React from 'react';
import { StyleSheet, Text, View } from 'react-native';
import Video from 'react-native-video';
export default function App() {
return (
<View style={styles.container}>
<Video source={{uri: './small.mp4'}} // Can be a URL or a local file.
ref={(ref) => {
this.player = ref
}} // Store reference
o.nBuffer={this.onBuffer} // Callback when remote video is buffering
onError={this.videoError} // Callback when video cannot be loaded
style={styles.backgroundVideo} />
</View>
);
}
最后我使用
npm start
我收到此错误消息：
undefined is not an object (evaluating 'RCTVideoInstance.Constants')
Stack trace:
node_modules/react-native-video/Video.js:265:11 in render
node_modules/react-native/Libraries/Renderer/implementations/ReactNativeRenderer-dev.js:13042:21 in finishClassComponent
node_modules/react-native/Libraries/Renderer/implementations/ReactNativeRenderer-dev.js:12970:4 in updateClassComponent
node_modules/react-native/Libraries/Renderer/implementations/ReactNativeRenderer-dev.js:307:15 in invokeGuardedCallbackImpl
node_modules/react-native/Libraries/Renderer/implementations/ReactNativeRenderer-dev.js:531:36 in invokeGuardedCallback
node_modules/react-native/Libraries/Renderer/implementations/ReactNativeRenderer-dev.js:20488:8 in beginWork$$1
node_modules/react-native/Libraries/Renderer/implementations/ReactNativeRenderer-dev.js:19370:24 in performUnitOfWork
node_modules/react-native/Libraries/Renderer/implementations/ReactNativeRenderer-dev.js:19347:39 in workLoopSync
node_modules/react-native/Libraries/Renderer/implementations/ReactNativeRenderer-dev.js:18997:22 in renderRoot
[native code]:null in renderRoot
node_modules/react-native/Libraries/Renderer/implementations/ReactNativeRenderer-dev.js:18709:28 in runRootCallback
[native code]:null in runRootCallback
node_modules/react-native/Libraries/Renderer/implementations/ReactNativeRenderer-dev.js:5642:32 in runWithPriority$argument_1
node_modules/scheduler/cjs/scheduler.development.js:643:23 in unstable_runWithPriority
node_modules/react-native/Libraries/Renderer/implementations/ReactNativeRenderer-dev.js:5638:22 in flushSyncCallbackQueueImpl
node_modules/react-native/Libraries/Renderer/implementations/ReactNativeRenderer-dev.js:5627:28 in flushSyncCallbackQueue
node_modules/react-native/Libraries/Renderer/implementations/ReactNativeRenderer-dev.js:18556:30 in scheduleUpdateOnFiber
node_modules/react-native/Libraries/Renderer/implementations/ReactNativeRenderer-dev.js:21822:15 in scheduleRootUpdate
node_modules/react-native/Libraries/Renderer/implementations/ReactNativeRenderer-dev.js:23042:20 in ReactNativeRenderer.render
node_modules/react-native/Libraries/ReactNative/renderApplication.js:52:52 in renderApplication
node_modules/react-native/Libraries/ReactNative/AppRegistry.js:116:10 in runnables.appKey.run
node_modules/react-native/Libraries/ReactNative/AppRegistry.js:197:26 in runApplication
node_modules/react-native/Libraries/BatchedBridge/MessageQueue.js:436:47 in __callFunction
node_modules/react-native/Libraries/BatchedBridge/MessageQueue.js:111:26 in __guard$argument_0
node_modules/react-native/Libraries/BatchedBridge/MessageQueue.js:384:10 in __guard
node_modules/react-native/Libraries/BatchedBridge/MessageQueue.js:110:17 in __guard$argument_0
[native code]:null in callFunctionReturnFlushedQueue
...
我按照 react-native-video 中的说明进行操作： https://www.npmjs.com/package/react-native-video
非常感谢...
2个回答
如果您想使用“react-native-video”，则必须从 expo 中弹出您的应用程序并使用裸工作流程。
顺便说一句，您可以使用 Expo Video 代替 react-native-video： https://docs.expo.io/versions/latest/sdk/video/
monsty
2020-05-05
你可以像这样将 jcenter 添加到 android/build.gradle：
allprojects {
repositories {
.... # Keep the rest
jcenter() {
content {
includeModule("com.yqritc", "android-scalablevideoview")
}
}
}
}
这对我有用，希望它也能对你有用
AbdulmateenChitrali
2022-07-26