Button action calls for an action when user tap on a button. This may be for making a service call, for doing some calculation or simply just to dismiss a view. Here are the different ways of setting button action in different languages. Java Python (TKinter) JavaScript: Swift Kotlin These examples demonstrate how to set… Read More »
1. Syntax ErrorExample: 2. IndentationErrorExample: Explanation: Python relies on indentation to define block structures. The print statement is not properly indented under the if statement, leading to an indentation error. 3.NameErrorExample: Explanation: The variable y is not defined before trying to print it, resulting in a NameError. It’s worth noting that the examples provided are… Read More »
To convert a date from Central Standard Time (CST) to Indian Standard Time (IST), you need to consider the time zone difference between these two zones. Below are examples in Swift : Swift: Java: Python: JavaScript: These examples assume a specific date and time format. You should adjust the date format and time zone identifiers… Read More »
There are N prisoners standing in a circle, waiting to be executed. The executions are carried out starting with the kth person, and removing every successive kth person going clockwise until there is no one left. Given N and k, write an algorithm to determine where a prisoner should stand in order to be the… Read More »
Java public class SmallestPositiveInteger { public static int findSmallestPositiveInteger(int[] nums) { int smallest = 1; for (int num : nums) { if (num <= smallest) { smallest += num; } else… Read More »
Apart from other languages, when you write a class in Swift, It should have a initialiser. To solve this we have to write init() function in that particular class. Just like below. For example, look at the below class. Here we have 5 variables. The above error usually comes when you don’t initialize all variables… Read More »
Hi all, In today’s tutorial I will show you how to send an image to server using POST method in ANDROID. If you are working in Android studio, then checkout the article here. Uploading an image to server is a basic requirement in many of our application. Sending data to server which is using a… Read More »
This is a simple example showing how to draw Arcs in android, You can use this to create piecharts or someother similar thing you want. Here we have 3 classes. 1. GraphicsActivity.java 2. MainActivity.java 3. PictureLayout.java GraphicsActivity.java PictureLayout.java MainActivity.java Download the complete source code from here.
This is a sample program that launches the camera and crop the captured image. Check this link to another crop image example. http://www.coderzheaven.com/2011/03/15/crop-an-image-in-android/ This is the layout xml. activity_main.xml Now this is the Main Java File that implements the crop functionality. Here we are using the “com.android.camera.action.CROP” Intent to crop the Image passing the captured… Read More »
Here is a simple example showing how to load a database values in a spinner in android. OK we will start. This is the layout for the spinner row. spinner_row.xml This is the layout for the interface. activity_main.xml Now this is the MainActivity.java file that uses the spinner and the database. Join the Forum discussion… Read More »
This simple example gets the image from contacts in android. Please leave your valuable comments.
Hello all…… I have written a lost of posts on Listviews. You can see that by just searching Listviews in my site. Today I will show you how to create a slide out animation while we delete a row from a ListView. So this is the xml that contains the ListView. Let it be in… Read More »
Java swing provides a native look and feel that emulates the look and feel of several platforms. Here i am going to create a Button and adding it to Frame. For this first create a Jframe object,a JPanel object and a Container object JFrame f = new JFrame(); JPanel panel1 = new JPanel(); Container con… Read More »
This is a simple example showing how to use tabbars in ANDROID. First create a new project and copy this code to it. Now create three another java files by right clicking the src folder and name it FirstTab.java, SecondTab.java, ThirdTab.java. Now copy the following code to FirstTab.java. SecondTab.java Now ThirdTab.java. Main.xml file AndroidManifest.xml You… Read More »
A simple event based applet applications is described below First importing the necessary header files // Demonstrate the mouse event handlers. import java.awt.*; import java.awt.event.*; import java.applet.*; /* <applet code=”MouseEvents” width=300 height=100> </applet> */ Next step is to create a class which implements the “MouseListener” and “MouseMotionListener “ public class MouseEvents extends Applet implements MouseListener, MouseMotionListener {… Read More »
Hello……… Sometimes you may want your body to act against the gravity of the world. One method to do this is described below. First what you have to do is to make a body in the shape of a circle and give it the image of a balloon as the userdata. Then in the tick… Read More »
The following code simply allows you to select a date and time using the datepicker and timepicker in ANDROID.
This sample code helps you to save a key and a corresponding value in windows Phone inside your application sandbox with the help of isolatedStorageSettings. PLease check this post before working around this post. How to save a text file in Windows Phone 7 or How to use isolated storage settings in Windows Phone 7?… Read More »
Hi all …….. Ofter we have trouble with loading continous images in ANDROID from our application directory. The reason is that all resources have a unique resource ID which we need to get to load these resources. The following example shows how to get these unique identifier from the “path” of the resource. For example… Read More »
We can create a dialog with custom alert dialog with our xml in android. But for making simple alerts we can make custom alerts through code itself. Here is a simple function for this. Here I am having a Listview and an edittext with two buttons in the alertBox. Please leave your valuable comments on… Read More »
Here is a way to get the number of children in a displayGroup in corona. Each children ca be accessed via the child index.
Here is a simple function to change the opacity of a view in android. Opacity is called alpha in android. so setAlpha(int) will do the job. The integer value may range from 0-255.
This example will test whether a service is running in android if you know it’s package name. Run this sample of code to check this.
Hello everyone, I have shown two methods to upload files in android. In today’s tutorial I will show another simple method to upload files. With this method you can upload multiple files in one request + you can send your own string parameters with them. Here is another method on working with uploading of images.… Read More »
Hi, In order to find whether a given string starts with a particular string or not in JAVA, use the following code.