setting up the WebView

MainActivity.java

WebSettings webSettings = webView.getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setDomStorageEnabled(true);
webSettings.setMixedContentMode(MIXED_CONTENT_ALWAYS_ALLOW); //Not needed if asked to override
webView.loadUrl("https://your_web_app_url");
webView.setWebViewClient(new MyWebViewClient());