如何在Android中从网络加载本机JS捆绑包? [英] How to load react native JS bundle from network in Android?

问题描述

对于我的Android应用，我需要能够在运行时动态更新Bundle，并使用Assets中预先保存的bundle作为后备.我未能在官方文档.

For my Android app, I need to be able to dynamically update the Bundle at runtime and use the pre-saved bundle in my Assets as a fall back. I have failed to find any information on this in the Official Documentation.

在iOS版本的react native中，有一种方法可以让您指定从中加载JS捆绑包的URL，但是我还没有看到适用于Android的等效选项.对于Android，这怎么可能?

In the iOS version of react native, there is a method that lets you specify a URL from which to load the JS bundle, but I have yet to see an equivalent option for Android. How is this possible for Android?

更新看起来RN团队一直在研究此功能，并将成为下一个版本的一部分: https://github.com/facebook/react-native/commit/3a743ef228a14e07c77c5488b080413643ec9c4b

Update It looks like the RN team has been working on this very feature and will be part of the next release: https://github.com/facebook/react-native/commit/3a743ef228a14e07c77c5488b080413643ec9c4b

推荐答案

1.下载捆绑文件并管理路径.

1.download bundle file(s) and manage the path(s).

2.在您的应用程序中新建一个ReactNativeHost:

2.new a ReactNativeHost in your Application:

public String mBundleFilePath = "";
private final ReactNativeHost mReactNativeHost = new ReactNativeHost(this) {
    @Override
    protected boolean getUseDeveloperSupport() {
        return BuildConfig.DEBUG;
    }

    @Override
    protected List<ReactPackage> getPackages() {
        return Arrays.asList(new MainReactPackage(), new MyReactPackage());
    }

    @Override
    protected String getJSBundleFile() {
        return mBundleFilePath;
    }
};

3.在启动ReactActivity之前，将ur捆绑文件的路径分配给变量:mBundleFilePath.

3.before starting a ReactActivity, assign the path of ur bundle file to variable: mBundleFilePath.

public class ReactNativeActivity extends ReactActivity {
    public static void launchSelf(...) {
        MyApplication.getInstance().mBundleFilePath = path;
        COMPONENT_NAME = ...;
        Intent intent = new Intent(activity,ReactNativeActivity.class);
        activity.startActivity(..);
    }
    ...
}

源代码:

com.facebook.react.ReactNativeHost#createReactInstanceManager
com.facebook.react.ReactInstanceManager.Builder#setJSBundleFile
com.facebook.react.cxxbridge.JSBundleLoader#createFileLoader

...

对您有帮助吗:)

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