WebView code generating Uncaught TypeError and Uncaught ReferenceError errors on Android 4.4.2 (API 19) emulator

Question

I\'m having a problem with my code when running on a Android 4.4.2 KitKat (API 19) emulator...

When I emulate my project on a Android 4.3 (API 18) emulator, it works nor

Answer 1

I had the same problem when I moved different javascript functions out of the main page to an separate .js file. For some reason, Android can't find externally-loaded JavaScript webview functions from Java - only the ones in the main page. Once I moved the function back from the JS file, it immediately started working.

Try making a "proxy" function like this directly inside the main HTML:

function proxy() {
    call_some_other_function_from_JS_file();
}

This worked for me. I'm sure there must be a way to get find these functions, because I didn't have this problem on iOS. Someone please comment if you know a better way.