How to Convert Any Website into a Professional Android App: Complete Source Code...

How to Convert Website into Android App: Complete Source Code...

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Learn the Complete Android Apps Development here. And In this Post, I am giving you the Complete Source Code of How to Convert Any Website into a Professional Android App. And If you want to learn it by Video Tutorials you can Checkout this. The Source codes and Video Tutorials are given below:

Complete Playlist for How to Convert Any Website into a Professional Android App with Complete Source Codes...

How to Convert Website into Android App: Complete Source Code...

In AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="coding.apps.fiverr">

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

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

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

<application

android:allowBackup="true"

android:icon="@mipmap/ic_launcher"

android:label="@string/app_name"

android:roundIcon="@mipmap/ic_launcher_round"

android:supportsRtl="true"

android:theme="@style/AppTheme">

<service

android:name=".MyFirebaseMessagingService" >

<intent-filter>

</intent-filter>

</service>

<intent-filter>

</intent-filter>

</activity>

<meta-data

android:name="preloaded_fonts"

android:resource="@array/preloaded_fonts" />

</application>

</manifest>

In MainActivity.java

package coding.apps.fiverr;

import androidx.annotation.NonNull;

import androidx.appcompat.app.AppCompatActivity;

import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;

import android.Manifest;

import android.app.AlertDialog;

import android.app.DownloadManager;

import android.app.ProgressDialog;

import android.content.Context;

import android.content.DialogInterface;

import android.content.Intent;

import android.graphics.Color;

import android.net.ConnectivityManager;

import android.net.NetworkInfo;

import android.net.Uri;

import android.os.Bundle;

import android.os.Environment;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.webkit.CookieManager;

import android.webkit.DownloadListener;

import android.webkit.URLUtil;

import android.webkit.WebChromeClient;

import android.webkit.WebView;

import android.webkit.WebViewClient;

import android.widget.Button;

import android.widget.ProgressBar;

import android.widget.RelativeLayout;

import android.widget.Toast;

import com.karumi.dexter.Dexter;

import com.karumi.dexter.PermissionToken;

import com.karumi.dexter.listener.PermissionDeniedResponse;

import com.karumi.dexter.listener.PermissionGrantedResponse;

import com.karumi.dexter.listener.PermissionRequest;

import com.karumi.dexter.listener.single.PermissionListener;

public class MainActivity extends AppCompatActivity {

WebView webView;

ProgressBar progressBar;

ProgressDialog progressDialog;

RelativeLayout relativeLayout;

Button btnNoInternetConnection;

SwipeRefreshLayout swipeRefreshLayout;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

webView = findViewById(R.id.myWebView);

webView.setWebViewClient(new WebViewClient() {

@Override

public void onPageFinished(WebView view, String url) {

super.onPageFinished(view, url);

swipeRefreshLayout.setRefreshing(false);

}

@Override

public boolean shouldOverrideUrlLoading(WebView view, String url) {

view.loadUrl(url);

return true;

}

});

progressBar = findViewById(R.id.progressBar);

progressDialog = new ProgressDialog(this);

btnNoInternetConnection = findViewById(R.id.btnNoConnection);

relativeLayout = findViewById(R.id.relativeLayout);

swipeRefreshLayout = findViewById(R.id.swipeRefreshLayout);

swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {

@Override

public void onRefresh() {

webView.reload();

}

});

swipeRefreshLayout.setColorSchemeColors(Color.BLUE, Color.GREEN, Color.YELLOW);

if (savedInstanceState != null){

webView.restoreState(savedInstanceState);

} else {

webView.getSettings().setJavaScriptEnabled(true);

webView.getSettings().setLoadsImagesAutomatically(true);

webView.getSettings().setLoadWithOverviewMode(true);

webView.getSettings().setUseWideViewPort(true);

webView.getSettings().setDomStorageEnabled(true);

checkConnection();

}

webView.setDownloadListener(new DownloadListener() {

@Override

public void onDownloadStart(final String url, final String userAgent, final String contentDisposition, final String mimetype, long contentLength) {

Dexter.withActivity(MainActivity.this)

.withPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE)

.withListener(new PermissionListener() {

@Override

public void onPermissionGranted(PermissionGrantedResponse permissionGrantedResponse) {

DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url));

request.setMimeType(mimetype);

String cookie = CookieManager.getInstance().getCookie(url);

request.addRequestHeader("cookie", cookie);

request.addRequestHeader("User-Agent", userAgent);

request.setDescription("Downloading File... Please wait");

request.setTitle(URLUtil.guessFileName(url,contentDisposition,mimetype));

request.allowScanningByMediaScanner();

request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);

request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, URLUtil.guessFileName(url,contentDisposition,mimetype));

DownloadManager downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);

downloadManager.enqueue(request);

Toast.makeText(MainActivity.this, "Downloading Started...", Toast.LENGTH_SHORT).show();

}

@Override

public void onPermissionDenied(PermissionDeniedResponse permissionDeniedResponse) {

Toast.makeText(MainActivity.this, "Permission Denied... Allow from Setting to save", Toast.LENGTH_SHORT).show();

}

@Override

public void onPermissionRationaleShouldBeShown(PermissionRequest permissionRequest, PermissionToken permissionToken) {

permissionToken.continuePermissionRequest();

}

}).check();

}

});

webView.setWebChromeClient(new WebChromeClient() {

@Override

public void onProgressChanged(WebView view, int newProgress) {

progressBar.setVisibility(View.VISIBLE);

progressBar.setProgress(newProgress);

setTitle("Loading...");

progressDialog.show();

if (newProgress == 100) {

progressBar.setVisibility(View.GONE);

progressDialog.dismiss();

setTitle(view.getTitle());

}

super.onProgressChanged(view, newProgress);

}

});

}

public void checkConnection() {

ConnectivityManager connectivityManager = (ConnectivityManager)

this.getSystemService(Context.CONNECTIVITY_SERVICE);

NetworkInfo wifi = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);

NetworkInfo mobileNetwork = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);

String webpage = "https://www.fiverr.com";

if (wifi.isConnected()) {

webView.loadUrl(webpage);

webView.setVisibility(View.VISIBLE);

relativeLayout.setVisibility(View.GONE);

} else if (mobileNetwork.isConnected()) {

webView.loadUrl(webpage);

webView.setVisibility(View.VISIBLE);

relativeLayout.setVisibility(View.GONE);

} else {

webView.setVisibility(View.GONE);

relativeLayout.setVisibility(View.VISIBLE);

}

@Override

public void onBackPressed() {

if (webView.canGoBack()) {

webView.goBack();

} else {

AlertDialog.Builder builder = new AlertDialog.Builder(this);

builder.setTitle("Are you sure you want to exit?");

builder.setMessage("Subscribe this channel Android Tutorials to learn Android Development.");

builder.setCancelable(false);

builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

finishAffinity();

}

});

builder.setNegativeButton("No", new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

dialog.dismiss();

}

});

builder.setNeutralButton("Rate Us", new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

Uri uri = Uri.parse("https://play.google.com/store/apps/details?id=com.peace.TextScanner");

Intent intent = new Intent(Intent.ACTION_VIEW,uri);

startActivity(intent);

}

});

AlertDialog dialog = builder.create();

dialog.show();

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

getMenuInflater().inflate(R.menu.main_menu, menu);

return super.onCreateOptionsMenu(menu);

}

@Override

public boolean onOptionsItemSelected(@NonNull MenuItem item) {

switch (item.getItemId()) {

case R.id.nav_previous:

onBackPressed();

break;

case R.id.nav_forward:

if (webView.canGoForward()) {

webView.goForward();

}

break;

case R.id.nav_refresh:

checkConnection();

break;

}

return super.onOptionsItemSelected(item);

}

@Override

protected void onSaveInstanceState(@NonNull Bundle outState) {

super.onSaveInstanceState(outState);

webView.saveState(outState);

}

In SplashScreen.java

package coding.apps.fiverr;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;

import android.os.Bundle;

import android.os.Handler;

import android.view.animation.Animation;

import android.view.animation.AnimationUtils;

import android.widget.TextView;

public class SplashScreen extends AppCompatActivity {

TextView title, subtitle, credit;

Animation buttomAnim, sideAnim;

int SPLASH_TIMER = 3000; //for 3 seconds

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_splash_screen);

getSupportActionBar().hide();

//casting for textview

title = findViewById(R.id.title);

subtitle = findViewById(R.id.subtitle);

credit = findViewById(R.id.credit);

//Animation Casting

buttomAnim = AnimationUtils.loadAnimation(this, R.anim.buttom_anim);

sideAnim = AnimationUtils.loadAnimation(this, R.anim.side_anim);

//Set Animation Textview or we can say a layout

title.setAnimation(buttomAnim);

subtitle.setAnimation(sideAnim);

credit.setAnimation(buttomAnim);

new Handler().postDelayed(new Runnable() {

@Override

public void run() {

Intent intent = new Intent(getApplicationContext(),MainActivity.class);

startActivity(intent);

finish();

}

}, SPLASH_TIMER);

}

In MyFirebaseMessagingService.java

package coding.apps.fiverr;

import android.app.Notification;

import android.app.NotificationManager;

import android.app.PendingIntent;

import android.content.Context;

import android.content.Intent;

import android.media.RingtoneManager;

import android.net.Uri;

import androidx.annotation.NonNull;

import com.google.firebase.messaging.FirebaseMessagingService;

import com.google.firebase.messaging.RemoteMessage;

public class MyFirebaseMessagingService extends FirebaseMessagingService {

public static int NOTIFICATION_ID = 0;

@Override

public void onMessageReceived(@NonNull RemoteMessage remoteMessage) {

generateNotification(remoteMessage.getNotification().getTitle(), remoteMessage.getNotification().getBody());

}

private void generateNotification(String title, String body) {

Intent intent = new Intent(this, MainActivity.class);

intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

PendingIntent pendingIntent = PendingIntent.getActivity(this,0,

intent, PendingIntent.FLAG_ONE_SHOT);

Uri soundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

Notification.Builder builder = new Notification.Builder(this);

builder.setSmallIcon(R.mipmap.ic_launcher)

.setContentTitle(title)

.setContentText(body)

.setAutoCancel(true)

.setSound(soundUri)

.setContentIntent(pendingIntent);

NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

if (NOTIFICATION_ID > 1073741824){

NOTIFICATION_ID = 0;

}

notificationManager.notify(NOTIFICATION_ID++, builder.build());

}

In buttom_anim.xml

<?xml version="1.0" encoding="utf-8"?>

<translate

android:fromYDelta="0%"

android:fromXDelta="50%"

android:duration="1500"/>

<alpha

android:fromAlpha="0.1"

android:toAlpha="1.0"

android:duration="1500"/>

</set>

In side_anim.xml

<?xml version="1.0" encoding="utf-8"?>

<translate android:fromXDelta="-50%"

android:fromYDelta="0%"

android:duration="1500"/>

<alpha

android:fromAlpha="0.1"

android:toAlpha="1.0"

android:duration="1500"/>

</set>

In activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

<androidx.swiperefreshlayout.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools"

android:id="@+id/swipeRefreshLayout"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical"

tools:context=".MainActivity">

<LinearLayout

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical">

<ProgressBar

android:id="@+id/progressBar"

style="?android:attr/progressBarStyleHorizontal"

android:layout_width="match_parent"

android:layout_height="9dp"

android:layout_marginTop="-2dp"

android:progress="20"

android:visibility="gone" />

<WebView

android:id="@+id/myWebView"

android:layout_width="match_parent"

android:layout_height="match_parent" />

<RelativeLayout

android:id="@+id/relativeLayout"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:background="#ffffff">

<ImageView

android:id="@+id/noConnectionLogo"

android:layout_width="240dp"

android:layout_height="240dp"

android:layout_centerHorizontal="true"

android:src="@drawable/no_internet" />

<TextView

android:id="@+id/txtNoConnection"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_below="@+id/noConnectionLogo"

android:text="No Internet Connection"

android:textAlignment="center"

android:textSize="26sp" />

<Button

android:id="@+id/btnNoConnection"

android:layout_width="140dp"

android:layout_height="55dp"

android:layout_below="@id/txtNoConnection"

android:layout_centerHorizontal="true"

android:layout_marginTop="60dp"

android:background="@color/colorAccent"

android:text="Retry"

android:textColor="#ffffff"

android:textSize="22sp" />

</RelativeLayout>

</LinearLayout>

</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>

In splash_screen.xml

<?xml version="1.0" encoding="utf-8"?>

<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:app="http://schemas.android.com/apk/res-auto"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:background="@color/colorPrimary"

android:layout_height="match_parent"

tools:context=".SplashScreen">

<TextView

android:id="@+id/title"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_margin="5dp"

android:fontFamily="@font/libre_baskerville_bold"

android:text="@string/app_name"

android:textColor="@android:color/white"

android:textSize="48sp"

app:layout_constraintBottom_toBottomOf="parent"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintStart_toStartOf="parent"

app:layout_constraintTop_toTopOf="parent"

app:layout_constraintVertical_bias="0.354" />

<TextView

android:id="@+id/subtitle"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_margin="5dp"

android:fontFamily="@font/libre_baskerville_bold"

android:text="Best Freelancing Site"

android:textColor="@android:color/white"

android:textSize="24sp"

app:layout_constraintEnd_toEndOf="@+id/title"

app:layout_constraintStart_toStartOf="@+id/title"

app:layout_constraintTop_toBottomOf="@+id/title" />

<TextView

android:id="@+id/credit"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_margin="5dp"

android:fontFamily="@font/libre_baskerville_bold"

android:gravity="center"

android:text="by \n Android Tutorials"

android:textColor="@android:color/white"

android:textSize="24sp"

app:layout_constraintBottom_toBottomOf="parent"

app:layout_constraintEnd_toEndOf="@+id/subtitle"

app:layout_constraintStart_toStartOf="@+id/subtitle"

app:layout_constraintTop_toBottomOf="@+id/subtitle" />

</androidx.constraintlayout.widget.ConstraintLayout>

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