如何从WebView中访问与安卓应用程序捆绑在一起的MP3文件？

public class MyJavaScriptInterface {
    private Context mContext;

    public MyJavaScriptInterface(Context context) {
        mContext = context;
    }

    @JavascriptInterface
    public String getMP3FilePath() {
        Resources resources = mContext.getResources();
        int resID = resources.getIdentifier("your_mp3_file_name", "raw", mContext.getPackageName());
        AssetFileDescriptor fileDescriptor = resources.openRawResourceFd(resID);
        return fileDescriptor.getFileDescriptor().toString();
    }
}

WebView webView = findViewById(R.id.webView);
webView.getSettings().setJavaScriptEnabled(true);
webView.addJavascriptInterface(new MyJavaScriptInterface(this), "Android");

webView.setWebViewClient(new WebViewClient() {
    @Override
    public void onPageFinished(WebView view, String url) {
        super.onPageFinished(view, url);
        view.loadUrl("javascript:playMP3(Android.getMP3FilePath())");
    }
});

webView.loadUrl("file:///android_asset/your_html_file.html");