本文介绍了react-native-video [android] undefined 不是一个对象(评估 NativeModuels.UIManager.RCTVideo.Constants')的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我将 react native 集成到现有的 android 应用程序中，我正在尝试使用 react-native-video 组件在应用程序上显示视频.
I integrated react native to an existing android app, I am trying to use react-native-video component for displaying video on the application.
- 反应原生:0.42.0
- 反应原生视频:1.0.0
我按照这里的说明操作:https://github.com/react-native-community/react-native-video
I followed the instructions here: https://github.com/react-native-community/react-native-video
在 MainApplication.java 上我添加了这个:
On the MainApplication.java I added this:
import com.brentvatne.react.ReactVideoPackage;
....
@Override
public List<ReactPackage> getPackages() {
return Arrays.<ReactPackage>asList(
new MainReactPackage(),
new ReactVideoPackage()
);
}
我将此添加到我的 settings.gradle(应用程序中只有一个)
I added this to my settings.gradle (only one in app)
include ':react-native-video'
project(':react-native-video').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-video/android')
在我的 android/app/build.gradle
In my android/app/build.gradle
compile project(':react-native-video')
在我的 React Native 组件上:
And on my react native component:
import Video from 'react-native-video';
....
render() {
return (
<View>
<Video source={{uri: 'https://vjs.zencdn.net/v/oceans.mp4'}} resizeMode="cover" repeat={true} />
....
React Native 组件构建正确，但最终在黄色屏幕上显示此警告，没有其他内容:
The react native component builds correctly but end up showing this warning on a yellow screen and nothing else:
Possible Unhandled Promise Rejection (id: 0):
undefined is not an object (evaluating '_reactNative.NativeModules.UIManager.RCTVideo.Constants')
render@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:46677:73
http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:12555:27
measureLifeCyclePerf@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:12015:14
_renderValidatedComponentWithoutOwnerOrContext@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:12554:45
_renderValidatedComponent@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:12575:78
performInitialMount@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:12227:55
mountComponent@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:12130:40
mountComponent@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:11170:49
mountChildren@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:11615:56
initializeChildren@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:9929:41
mountComponent@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:10012:28
mountComponent@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:11170:49
performInitialMount@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:12235:48
mountComponent@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:12130:40
mountComponent@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:11170:49
performInitialMount@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:12235:48
mountComponent@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:12130:40
mountComponent@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:11170:49
performInitialMount@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:12235:48
mountComponent@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:12130:40
mountComponent@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:11170:49
mountChildren@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:11615:56
initializeChildren@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:9929:41
mountComponent@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:10012:28
mountComponent@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:11170:49
performInitialMount@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:12235:48
mountComponent@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:12130:40
mountComponent@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:11170:49
mountChildren@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:11615:56
initializeChildren@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:9929:41
mountComponent@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:10012:28
mountComponent@http://localhost:8081/reactnative/wall.bundle?platform=android&dev=true&hot=false&minify=false:11170:49
performInitialMount@http://localhost:8081/reactnati
谢谢！
推荐答案
修复在创建 ReactInstanceManager 时添加 ReactVideoPackage
Fixed adding the ReactVideoPackage when creating the ReactInstanceManager
mReactInstanceManager = ReactInstanceManager.builder()
.setApplication(getApplication())
.setBundleAssetName("index.android.bundle")
.setJSMainModuleName("index.android")
.addPackage(new MainReactPackage())
.addPackage(new ReactVideoPackage())//<-- this line fixed
.setUseDeveloperSupport(BuildConfig.DEBUG)
.setInitialLifecycleState(LifecycleState.RESUMED)
.build();
这篇关于react-native-video [android] undefined 不是一个对象(评估 NativeModuels.UIManager.RCTVideo.Constants')的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！