This example will tell you how to set the android.widget.TextView text foreground color and background color in source code. For other android UI components, it is similar to change foreground and background color like this.
How To Set Text Color And Background Color In Android Programmatically Read More »
This example will tell you how to display Html text in the android.widget.TextView and android.webkit.WebView object. 1. Display Html Data In Android TextView And WebView Example. If you can not watch the above video, you can see it on the youtube URL https://youtu.be/gUisxpEm908. There are three buttons on the screen in this example. When you
How To Display Html Text In TextView And WebView Read More »
Android AbsoluteLayout is used to layout UI components with absolute x, y-axis coordinate values. For example, if you put a button widget in AbsoluteLayout, you can set the button’s layout_x, and layout_y property value to place the button in a specific location. This example will show you how to use it.
Android Absolute Layout Example Read More »
This example will tell you how to open a popup alert dialog when the user clicks a floating action button, and after the user inputs the user name in the dialog, it will save the user name in the list view on the main screen. If the user name exists, it will popup a message
Android Floating Action Button, Snackbar, List View Example Read More »
This example will show you how to create a popup dialog with user input controls when the user clicks a button in the main activity screen. The popup dialog customizes the android.support.v7.app.AlertDialog class.
Android Create User Input Popup Dialog By Custom AlertDialog Example Read More »
jQuery pseudo class selector is something like CSS class selector, it can help you to get the web element very easily and accurately. jQuery framework provides many pseudo class selectors, we will introduce them one by one by examples.
jQuery Pseudo Class Selector Example Read More »
This example will show you how to use Node.JS to create a client and server which will use UDP protocol to communicate. First, you need to import the node js dgram module. This module will control all UDP-related issues such as create a UDP client, create a UDP server, and then you can use the client
Node JS UDP Broadcast Example Read More »
Node js use event loop to process client request, sometimes you need to make your javascript object can emit event also. This example will show you how to enable your javascript function object with emit event functions.
Node JS Add Emit Event Feature To JavaScript Function Object Example Read More »
This example show you how to check if a string content is numeric or not. It provide totally six methods to use. package com.dev2qa.calculatorexample; import java.util.regex.Matcher; import java.util.regex.Pattern; /** * Created by zhaosong on 2018/5/23. */ public class CheckStringNumeric { public static void main(String args[]) { CheckStringNumeric checkStringNumeric = new CheckStringNumeric(); checkStringNumeric.isNumeric(“-123.45”); checkStringNumeric.isInteger(“-123”); checkStringNumeric.isIntegerByParse(“-123.456”); checkStringNumeric.isDoubleByParse(“-123.456789”);
How To Check If A String Is Numeric In Java Read More »
This example will show you how to use the android.widget.TableLayout and android.widget.Button to implement an android calculator application. It is a regular calculator which can execute +, –, *, and / operation.
Android Calculator Example Source Code Read More »