React Native Webview: Handling External API Response before URL Load

React Native Webview: Handling External API Response URL Load

React Native Webview is a powerful tool that allows developers to display web content within a React Native application. One common use case is handling external API responses, such as a payment success page. In this article, we will explore how to handle external API response URL loads in React Native Webview.

Understanding the Basics

React Native Webview provides a source prop that allows you to specify the URL to load. In the example provided, the URL is a payment success page with a query parameter for the order ID. When the Webview loads this URL, it will make a request to the specified endpoint and receive a response.

To handle the response, we can use the onLoadEnd prop. This prop is called when the Webview finishes loading the content, and it provides a syntheticEvent object that contains the nativeEvent property. The nativeEvent property contains information about the load, including the data property, which is the response from the server.

Handling the Response

To handle the response, we can create a function that is called when the onLoadEnd prop is triggered. This function can parse the response and extract the data we need. For example, if the response is a JSON object, we can use the JSON.parse() method to convert it into a JavaScript object.

handleLoadEnd = (event) => {
  const { data } = event.nativeEvent;
  const response = JSON.parse(data);
  // do something with the response
}

We can then pass this function to the onLoadEnd prop of the Webview:

<WebView
  source={{ uri: 'http://192.168.59.153:3000/api/v1/common/paymentsuccess?order_id=XO170369896' }}
  onLoadEnd={this.handleLoadEnd}
/>

Significance and Applications

Handling external API response URL loads is an important aspect of building React Native applications that interact with external services. By understanding how to handle these responses, developers can build more robust and powerful applications that can interact with a wide range of external services.

For example, a React Native application that allows users to order food from multiple restaurants could use Webviews to display the restaurant's order confirmation page. By handling the response from the restaurant's API, the application could extract the order details and update the user's order history.

• React Native Webview provides a source prop to specify the URL to load.
• The onLoadEnd prop is called when the Webview finishes loading the content.
• The nativeEvent property of the syntheticEvent object contains the response from the server.
• Handling external API response URL loads is an important aspect of building React Native applications that interact with external services.

References

• React Native Webview Documentation
• SyntheticEvent Documentation
• Fetch API Documentation