[GitHub] [cordova-android] breautek commented on issue #1143: [HELP] How to intercept requests to local files

[GitBox <gi...@apache.org>]

breautek commented on issue #1143:
URL: https://github.com/apache/cordova-android/issues/1143#issuecomment-745291431


   Is there a reason why you are requesting them over the internet? You really should just package those font files locally and request them locally instead of them.
   
   Your app should work well enough offline. Your app may have parts that require an internet connection, but it should at least be able to load up your base UI code. You will obviously be missing your font files (something a user may see as a buggy app if the font randomly changes) if the user tries using your app without an internet connection.
   
   To answer your question, it isn't easy to "intercept" a request in JS. A normal way of doing this would be via Service Workers, however they don't work in the android webview. You might be able to do this via creating your own [plugin](https://cordova.apache.org/docs/en/latest/guide/hybrid/plugins/) and provide an implementation for:
   
   https://github.com/apache/cordova-android/blob/55feadff0519fa294be34c22ff6fbb913efd1b48/framework/src/org/apache/cordova/CordovaPlugin.java#L292-L319
   
   But the challenge you'll face is "How do you detect if the file is in the chrome cache, and if so how do you obtain it so that you can read and serve it." At this point you're utilising a private implementation detail of the chrome webview, therefore it would be easier and more stable just to bundle your assets with your APK.
   
   Despite my effort of trying to give you a detailed answer, Apache Cordova doesn't provide support in GitHub Issues therefore I'll be closing this ticket. We use GitHub Issues are for tracking bugs or feature requests only. If you require further support, I do invite you to use our [Slack Community](http://slack.cordova.io/) instead.


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