Question 1

How to send JSON data between React Native and WebView with this bridge?

Accepted Answer

You must stringify JSON on the sending side using JSON.stringify() and parse it on the receiving side with JSON.parse(). The library only supports string messages, so serialization is mandatory.

Question 2

Is react-native-webview-bridge compatible with Expo?

Accepted Answer

No, it's not compatible with Expo's managed workflow because it requires native module linking. You would need to eject to the bare workflow or use an alternative like react-native-webview.

Question 3

What are the alternatives to react-native-webview-bridge?

Accepted Answer

Alternatives include the official react-native-webview component, which has built-in postMessage support, or libraries like react-native-inappbrowser for specific use cases. react-native-webview is generally better maintained.

Question 4

How to handle errors on Android when messages fail?

Accepted Answer

Error handling on Android is limited; the library doesn't provide an onError callback. Developers need to implement custom checks, such as wrapping send calls in try-catch blocks in JavaScript.

Question 5

react-native-webview-bridge vs react-native-webview: which one should I use?

Accepted Answer

For new projects, react-native-webview is recommended as it's the official component with postMessage API and better maintenance. react-native-webview-bridge is an older extension that adds a custom bridge but may have compatibility issues.

Question 6

How to inject custom JavaScript alongside the bridge script?

Accepted Answer

Use the injectedJavaScript prop to add custom scripts. The bridge script is injected first, then your custom script, as noted in the README's Notes section.

react-native-webview-bridge

What is react-native-webview-bridge?

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