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Articles by Samual Sam
Page 103 of 151
How to add last element in android ConcurrentLinkedDeque?
Before getting into example, we should know what ConcurrentLinkedDequeis, it is unbounded deque based on linked nodes. Multiple threads can access deque elements with safety.This example demonstrate about How to add last element in android ConcurrentLinkedDequeStep 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. In the above code, we have taken text view to showConcurrentLinkedDequeelements.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import ...
Read MoreHow to add element based on index in android CopyOnWriteArrayList?
Before getting into example, we should know what CopyOnWriteArrayListis. It is a thread-safe variant of ArrayListand operations add, set, and so on by making a fresh copy of the underlying array.This example demonstrate about How to add element based on index in android CopyOnWriteArrayListStep 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. In the above code, we have taken text view to showCopyOnWriteArrayListelements.Step 3 − Add the following code to src/MainActivity.javapackage ...
Read MoreHow to display an image with rounded corners on iOS App using Swift?
To make an image with round corners or to make any view or button or any UI element with round corners in swift, we need to access the corner radius property of its layer. Every UI element in iOS is based on a layer.First of all, let’s add an UIImageView Object in our storyboard. Or let’s create one programmatically.Below is a function that will programmatically create an image view and add an image to it.func addImage(imageName img: String) { let imageView = UIImageView() imageView.frame = CGRect(x: 10, y: 20, width: 200, height: 200) imageView.contentMode = . scaleAspectFill ...
Read MorePush segue from UITableViewCell to ViewController in Swift
To create a segue from a UITableViewCell to another View controller, we’ll do it like any other ViewController to ViewController segue. We’ll do this with help of an example here.First Create a project, delete the View Controller from storyboard and add One Table View Controller and one View Controller in the storyboard.There will be one prototype cell in the Table View Controller by default. Click on it, go to its attribute inspector and give it “cell” as Identifier.Now from the prototype cell, press control and drag to the Second View Controller and select show from there.The storyboard should look like ...
Read MoreHow to send an attachment in email using Swift?
To send an email from our iPhone device using our application we need to import the MessageUI framework of iOS SDK. After importing the framework in your application, drag and drop a button on the view controller. Add empty action for that button.Now add the following code in your view controller.funccomposeEmail(to email: String, subject: String, Body: String) { if( MFMailComposeViewController.canSendMail()) { letmailComposer = MFMailComposeViewController() mailComposer.mailComposeDelegate = self mailComposer.setToRecipients([email]) mailComposer.setSubject(subject) mailComposer.setMessageBody(Body, isHTML: true) letpathPDF = "\(NSTemporaryDirectory())result.pdf" if let fileData ...
Read MoreCapture picture from iOS camera using Swift
To capture pictures from a camera in swift we can use AVFoundation which is a framework in iOS SDK, but we should try to avoid using it until we need a lot of custom features in our camera application. In this example, we’ll only capture a picture from the camera and display it on the view. We’ll be using image picker in this example instead of AVFoundation.First, create a project and add an image view on its view Controller in the storyboard. Create the outlet in its class. Now inside the ViewController class conform it to −class ViewController: UIViewController, UIImagePickerControllerDelegate, ...
Read MoreHow to insert element to linked list for listview in Android?
This example demonstrate about How to insert element to linked list for listview in AndroidStep 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. In the above code, we have taken name as Edit text, when user click on save button it will store the data into array list. Click on refresh button to get the changes of listview.Step ...
Read MoreHow to delete all elements from linked list for listview in Android?
This example demonstrate about How to delete all elements from linked list for listview in AndroidStep 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. In the above code, we have taken name as Edit text, when user click on save button it will store the data into arraylist. Click on ...
Read MoreDifferent Methods to find Prime Number in Python
First we need to know what a prime number is.A prime number always a positive integer number and divisible by exactly 2 integers (1 and the number itself), 1 is not a prime number.Now we shall discuss some methods to find Prime Number.Method1Using For loopsExampledef primemethod1(number): # Initialize a list my_primes = [] for pr in range(2, number): isPrime = True for i in range(2, pr): if pr % i == 0: isPrime = False if isPrime: my_primes.append(pr) print(my_primes) primemethod1(50)Output[2, 3, 5, 7, 11, ...
Read MoreRead integers from console in Java
To read integers from console, use Scanner class.Scanner myInput = new Scanner( System.in );Allow a use to add an integer using the nextInt() method.System.out.print( "Enter first integer: " ); int a = myInput.nextInt();In the same way, take another input in a new variable.System.out.print( "Enter second integer: " ); Int b = myInput.nextInt();Let us see the complete example.Exampleimport java.util.Scanner; public class Demo { public static void main( String args[] ) { Scanner myInput = new Scanner( System.in ); int a; int b; int sum; System.out.print( ...
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