如何将数据从在 kotlin 上运行的 android 应用程序发送到在 webview 上打开的 react js 应用程序？

Question

Suppose you are running an android application (kotlin) and u have logged in and have some data. Then in webview you open a react js application. How can u pass that login data from android to react js application.

Answer 1

I haven't done this personally, but I believe you would want to package any data you have inside of a script tag and inject it into the web view. For example, if the React application needs the value of user_id you would pass in the user id to a script like:

val script = """
    <script> var user_id = ${user.id} </script>
"""

Because I'm not a React guy, that may not work right off the bat. You might need to add the value to the document object and read it off that way.

Once the script is created then you can include it into your webview using the loadDataWithBaseURL function . It would look something like this:

webView.loadDataWithBaseURL(reactAppUrl, script, "text/html", "utf-8", null)