android - react-native-video [android] undefined 不是对象(评估 NativeModuels.UIManager.RCTVideo.Constants')

Question

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。

• React-native:0.42.0
• react-native-video: 1.0.0

我按照此处的说明操作:https://github.com/react-native-community/react-native-video

在 MainApplication.java 我添加了这个:

import com.brentvatne.react.ReactVideoPackage;
....
@Override
    public List<ReactPackage> getPackages() {
        return Arrays.<ReactPackage>asList(
                new MainReactPackage(),
                new ReactVideoPackage()
        );
}

我将其添加到我的 settings.gradle(应用程序中只有一个)

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

compile project(':react-native-video')

在我的 React Native 组件上:

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，没有其他任何内容:

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!

Answer 1

修复了在创建 ReactInstanceManager 时添加 ReactVideoPackage

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();