How to convert a Website to a professional android app

Just copy the codes as I told in the video 

<uses-permission  android:name="android.permission.INTERNET"></uses-permission> 

android:id="@+id/webview" 

 

import android.webkit.WebSettings;

import android.webkit.WebView;

import android.webkit.WebViewClient;

private WebView mywebView; 

mywebView=(WebView) findViewById(R.id.webview);

 mywebView.setWebViewClient(new WebViewClient());

 mywebView.loadUrl("http://www.fizzblogging.xyz/");

 WebSettings webSettings=mywebView.getSettings();

 webSettings.setJavaScriptEnabled(true); 

public class mywebClient extends WebViewClient{

        @Override

        public void onPageStarted(WebView view, String url, Bitmap favicon){

            super.onPageStarted(view,url,favicon);

        }

        @Override

        public boolean shouldOverrideUrlLoading(WebView view,String url){

            view.loadUrl(url);

            return true;

        }

    }

@Override

    public void onBackPressed(){

        if(mywebView.canGoBack()) {

            mywebView.goBack();

        }

    else{

        super.onBackPressed();

            }

} 

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