This example demonstrates how do I convert an image to Base 64 string on android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.     Step 3 – Copy paste an image in the res/drawable. Example: res/drawable/logo.pngStep 4 − Add the following code to src/MainActivity.javaimport android.annotation.SuppressLint; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Base64; import android.widget.TextView; import java.io.ByteArrayOutputStream; public class MainActivity extends AppCompatActivity {    TextView textView;    String string;    Bitmap ... Read More

To change the brightness of the screen we have to use the brightness property of the screen, This property is only supported on the main screen. The value of this property should be a number between 0.0 and 1.0, inclusive.Brightness changes made by an app remain in effect until the device is locked, regardless of whether the app is closed. The system brightness (which the user can set in Settings or Control Center) is restored the next time the display is turned on.It’s an instance property, To implement this in your iOS Application (any application) add below line in viewDidLoad ... Read More

Changing the text color of the navigation bar is tricky and easy at the same time, In this post, we will be seeing how one can change the text color of navigation bar in swift.So let’s get started, Embed your view controller in Navigation controller as shown below and name navigation item for that particular controller as a tutorial as shown, Now navigate to AppDelegate.swift and add below lines in didFinisheLaunchingWithOptions method.func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {    // Override point for customization after application launch.    let textColor = [NSAttributedString.Key.foregroundColor:UIColor.green]    UINavigationBar.appearance().titleTextAttributes = textColor ... Read More

This example demonstrates how do I parse HTML in android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.         Step 3 – Add the given dependency in the build.gradle (Module: app)implementation 'org.jsoup:jsoup:1.11.2'Step 4 − Add the following code to src/MainActivity.javaimport android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.widget.Button; import android.widget.TextView; import org.jsoup.Jsoup; import org.jsoup.nodes.Document; import org.jsoup.nodes.Element; import org.jsoup.select.Elements; import java.io.IOException; public class MainActivity extends AppCompatActivity {    Button button;    TextView textView; ... Read More

This example demonstrates how do I set the color of a textView span in android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.     Step 3 − Add the following code to src/MainActivity.javaimport android.graphics.Color; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.text.SpannableString; import android.text.Spanned; import android.text.style.ForegroundColorSpan; import android.widget.TextView; public class MainActivity extends AppCompatActivity {    TextView textView;    @Override    protected void onCreate(Bundle savedInstanceState) {       super.onCreate(savedInstanceState);       setContentView(R.layout.activity_main);     ... Read More

CollectionView with TableView are two of many fundamental concept of iOS development, every developer should master both to be a good developer.In this post we will be focussing mainly on CollectionView, CollectionView is same as table view with some difference, Collection View supports both horizontal and vertical scrolling which looks like a grid. CollectionView in iOS is also referred to grid view in Android.To read more about it you can refer https://developer.apple.com/documentation/uikit/uicollectionviewAs you can see Collection View consists of Supplementary View and Cell, The collection view presents items onscreen using a cell, which is an instance of the UICollectionViewCell class ... Read More

Getting dimensions of a view is easy, In this post, we will see how one can get the dimensions of a view in iOS.Let’s get started, Step 1 − Open Xcode and create a single view application and name it SampleView.Step 2 − Open Main.storyboard and add UIView as shown below, Step 3 − Create @IBOutlet of the view in ViewController.swift.@IBOutlet var sampleView: UIView!Step 4 − In viewDidLoad of ViewController.swift write the following code, print(sampleView.frame.size)Run the application to see the size.Complete codeimport UIKit class ViewController: UIViewController {    @IBOutlet var sampleView: UIView!    override func viewDidLoad() {       ... Read More

As an iOS developer, you will come across multiple scenarios where you have to display something in web, for that we use WebView.As per Apple, − It is an object that displays interactive web content, such as for an in-app browser.So in this post, we will be seeing how to create WebView and load the data in it.So let’s startStep 1 − Open Xcode and create a single view application and name it WebViewSample.Step 2 − Open ViewController.swift file and import the WebKit module. import WebKitStep 3 − Add a property of WebKit in ViewController.swift.var webView: WKWebView!Step 4 − Add ... Read More

Getting a phone number of the iOS device is programmatically is not feasible. Apple doesn’t encourage it. You can get the phone number using private API’s but that will result in rejection of your application from the Apple App Store.As per the apple development guideline apps should be self-contained in their bundles, and may not read or write data outside the designated container area and device number is not available within your application’s container.As per Apple developer forum −Regardless of which programming language you use, Apple doesn't make the phone number associated with a device available to developers.Read More

This example demonstrates how remove a button or make it invisible in android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.               Step 3 − Add the following code to src/MainActivity.javapackage com.example.sample; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.app.Activity; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; public class MainActivity extends AppCompatActivity {    OnClickListener listener1=null;    OnClickListener listener2=null;    Button button1;    Button button2;    @Override    protected void onCreate(Bundle ... Read More