Convert your Website into Professional Android App Using Android Studio. Please don’t forget to Like, Share, Comment and Subscribe to our Techno Vedant Channel for more videos.
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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://viskill.in/"; // 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" />
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://viskill.in/"; // 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; } } } }
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(); } }
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); } }
Screen Rotation:
AndroidManifest.xml
android:screenOrientation="portrait">
Splash Screen:
SplashActivity.java
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Window;
import android.view.WindowManager;
public class SplashActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Window window = getWindow() ;
window.addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_splash);
Thread splashTread = new Thread(){
@Override
public void run() {
try {
sleep(3000);
startActivity(new Intent(getApplicationContext(),MainActivity.class));
finish();
} catch (InterruptedException e) {
e.printStackTrace();
}
super.run();
}
};
splashTread.start();
}
}
activity_splash
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:layout_height="match_parent"
android:orientation="vertical"
tools:context=".SplashActivity">
<ImageView
android:layout_width="match_parent"
android:layout_height="300dp"
android:src="@drawable/logo"
android:scaleType="centerCrop"
android:padding="50dp"
android:layout_marginTop="220dp"/>
<ProgressBar
android:layout_width="220dp"
android:layout_height="10dp"
android:layout_gravity="center_horizontal"
style="?android:attr/progressBarStyleHorizontal"
android:max="100"
android:indeterminate="true"
android:progress="0"
android:layout_marginTop="100dp"
/>
</LinearLayout>
AndroidManifest.xml
<activity android:name=".MainActivity" android:exported="false" /> <activity android:name=".SplashActivity" android:exported="true" android:screenOrientation="portrait"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity>
Enable Download Button:
MainActivity.Java
if(Build.VERSION.SDK_INT>= Build.VERSION_CODES.M){ if(checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_DENIED){ Log.d("permission","permission denied to WRITE_EXTERNAL_STORAGE - requesting it"); String[] permissions = {Manifest.permission.WRITE_EXTERNAL_STORAGE}; requestPermissions(permissions,1); } } //handle downloading webview.setDownloadListener(new DownloadListener() { @Override public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimeType, long contentLength) { DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url)); request.setMimeType(mimeType); String cookies = CookieManager.getInstance().getCookie(url); request.addRequestHeader("cookie",cookies); request.addRequestHeader("User-Agent",userAgent); request.setDescription("Downloading file...."); 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 dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE); dm.enqueue(request); Toast.makeText(getApplicationContext(),"Downloading File",Toast.LENGTH_SHORT).show(); } });
AndroidMainfest.xml
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
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