convert website to android app source code

1. WebView Android App Code: Activity_Main.xml <WebView android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/webView" android:layout_alignParentTop="true" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" android:layout_alignParentBottom="true" android:layout_alignParentRight="true" android:layout_alignParentEnd="true" tools:ignore="MissingConstraints" /> MainActivity.java import android.os.Bundle; import android.webkit.WebView; import android.webkit.WebViewClient; import androidx.appcompat.app.AppCompatActivity; public class MainActivity extends AppCompatActivity { String websiteURL = "https://coupon.technovedant.com/"; // sets web url private WebView webview; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //Webview stuff webview = findViewById(R.id.webView); webview.getSettings().setJavaScriptEnabled(true); webview.getSettings().setDomStorageEnabled(true); webview.setOverScrollMode(WebView.OVER_SCROLL_NEVER); webview.loadUrl(websiteURL); webview.setWebViewClient(new WebViewClientDemo()); } private class WebViewClientDemo extends WebViewClient { @Override //Keep webview in app when clicking links public boolean shouldOverrideUrlLoading(WebView view, String url) { view.loadUrl(url); return true; } } } AndroidManifest.xml <uses-permission android:name="android.permission.INTERNET" /> 2. Internet Connection Error: AndroidManifest.xml <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> MainActivity.java import android.app.AlertDialog; import android.content.Context; import android.content.DialogInterface; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.os.Bundle; import android.util.Log; import android.webkit.WebView; import android.webkit.WebViewClient; import androidx.appcompat.app.AppCompatActivity; public class MainActivity extends AppCompatActivity { String websiteURL = "https://coupon.technovedant.com/"; // sets web url private WebView webview; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); if( ! CheckNetwork.isInternetAvailable(this)) //returns true if internet available { //if there is no internet do this setContentView(R.layout.activity_main); //Toast.makeText(this,"No Internet Connection, Chris",Toast.LENGTH_LONG).show(); new AlertDialog.Builder(this) //alert the person knowing they are about to close .setTitle("No internet connection available") .setMessage("Please Check you're Mobile data or Wifi network.") .setPositiveButton("Ok", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { finish(); } }) //.setNegativeButton("No", null) .show(); } else { //Webview stuff webview = findViewById(R.id.webView); webview.getSettings().setJavaScriptEnabled(true); webview.getSettings().setDomStorageEnabled(true); webview.setOverScrollMode(WebView.OVER_SCROLL_NEVER); webview.loadUrl(websiteURL); webview.setWebViewClient(new WebViewClientDemo()); } } private class WebViewClientDemo extends WebViewClient { @Override //Keep webview in app when clicking links public boolean shouldOverrideUrlLoading(WebView view, String url) { view.loadUrl(url); return true; } } } class CheckNetwork { private static final String TAG = CheckNetwork.class.getSimpleName(); public static boolean isInternetAvailable(Context context) { NetworkInfo info = (NetworkInfo) ((ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE)).getActiveNetworkInfo(); if (info == null) { Log.d(TAG,"no internet connection"); return false; } else { if(info.isConnected()) { Log.d(TAG," internet connection available..."); return true; } else { Log.d(TAG," internet connection"); return true; } } } } 3. Back & Exit Feature: MainActivity.java //set back button functionality @Override public void onBackPressed() { //if user presses the back button do this if (webview.isFocused() && webview.canGoBack()) { //check if in webview and the user can go back webview.goBack(); //go back in webview } else { //do this if the webview cannot go back any further new AlertDialog.Builder(this) //alert the person knowing they are about to close .setTitle("EXIT") .setMessage("Are you sure. You want to close this app?") .setPositiveButton("Yes", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { finish(); } }) .setNegativeButton("No", null) .show(); } } 4. Swipe Down to Refresh: activity_main.xml <androidx.swiperefreshlayout.widget.SwipeRefreshLayout android:id="@+id/swipeContainer" android:layout_width="match_parent" android:layout_height="match_parent"> <WebView android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/webView" android:layout_alignParentTop="true" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" android:layout_alignParentBottom="true" android:layout_alignParentRight="true" android:layout_alignParentEnd="true" tools:ignore="MissingConstraints" /> </androidx.swiperefreshlayout.widget.SwipeRefreshLayout> MainActivity.java SwipeRefreshLayout mySwipeRefreshLayout; //Swipe to refresh functionality mySwipeRefreshLayout = (SwipeRefreshLayout)this.findViewById(R.id.swipeContainer); mySwipeRefreshLayout.setOnRefreshListener( new SwipeRefreshLayout.OnRefreshListener() { @Override public void onRefresh() { webview.reload(); } } ); private class WebViewClientDemo extends WebViewClient { @Override //Keep webview in app when clicking links public boolean shouldOverrideUrlLoading(WebView view, String url) { view.loadUrl(url); return true; } @Override public void onPageFinished(WebView view, String url) { super.onPageFinished(view, url); mySwipeRefreshLayout.setRefreshing(false); } } import android.app.AlertDialog; import android.content.Context; import android.content.DialogInterface; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.os.Bundle; import android.util.Log; import android.webkit.WebView; import android.webkit.WebViewClient; import androidx.appcompat.app.AppCompatActivity; import androidx.swiperefreshlayout.widget.SwipeRefreshLayout; public class MainActivity extends AppCompatActivity { String websiteURL = "https://youtube.com/technicalsangrah"; // sets web url private WebView webview; SwipeRefreshLayout mySwipeRefreshLayout; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); if( ! CheckNetwork.isInternetAvailable(this)) //returns true if internet available { //if there is no internet do this setContentView(R.layout.activity_main); //Toast.makeText(this,"No Internet Connection, Chris",Toast.LENGTH_LONG).show(); new AlertDialog.Builder(this) //alert the person knowing they are about to close .setTitle("No internet connection available") .setMessage("Please Check you're Mobile data or Wifi network.") .setPositiveButton("Ok", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { finish(); } }) //.setNegativeButton("No", null) .show(); } else { //Webview stuff webview = findViewById(R.id.webView); webview.getSettings().setJavaScriptEnabled(true); webview.getSettings().setDomStorageEnabled(true); webview.setOverScrollMode(WebView.OVER_SCROLL_NEVER); webview.loadUrl(websiteURL); webview.setWebViewClient(new WebViewClientDemo()); } //Swipe to refresh functionality mySwipeRefreshLayout = (SwipeRefreshLayout)this.findViewById(R.id.swipeContainer); mySwipeRefreshLayout.setOnRefreshListener( new SwipeRefreshLayout.OnRefreshListener() { @Override public void onRefresh() { webview.reload(); } } ); } private class WebViewClientDemo extends WebViewClient { @Override //Keep webview in app when clicking links public boolean shouldOverrideUrlLoading(WebView view, String url) { view.loadUrl(url); return true; } @Override public void onPageFinished(WebView view, String url) { super.onPageFinished(view, url); mySwipeRefreshLayout.setRefreshing(false); } } //set back button functionality @Override public void onBackPressed() { //if user presses the back button do this if (webview.isFocused() && webview.canGoBack()) { //check if in webview and the user can go back webview.goBack(); //go back in webview } else { //do this if the webview cannot go back any further new AlertDialog.Builder(this) //alert the person knowing they are about to close .setTitle("EXIT") .setMessage("Are you sure. You want to close this app?") .setPositiveButton("Yes", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { finish(); } }) .setNegativeButton("No", null) .show(); } } } class CheckNetwork { private static final String TAG = CheckNetwork.class.getSimpleName(); public static boolean isInternetAvailable(Context context) { NetworkInfo info = (NetworkInfo) ((ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE)).getActiveNetworkInfo(); if (info == null) { Log.d(TAG,"no internet connection"); return false; } else { if(info.isConnected()) { Log.d(TAG," internet connection available..."); return true; } else { Log.d(TAG," internet connection"); return true; } } } } 5. Screen Rotation: AndroidManifest.xml android:screenOrientation="portrait"></body>