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 »
The android.widget.Button is a frequently used widget in the android application. You can add as many buttons as you need in a layout view object. But how to listen and respond to the click event when the user clicks the buttons? This example will tell you how.
Android Button OnClick Example Read More »
Pinch zoom ( in or out ) is an often-used gesture in android applications. It is very user-friendly and smooth to display something bigger or smaller to watch. This example will show you how to implement pinch zoom on an image in the android application.
Android Pinch Zoom Layout Example Read More »
In some cases, you may want to capture custom-defined gestures in your android application. And at the same time, you may also want to detect general gestures ( such as double-tap, long press, scroll, etc) on the special view component. This article will tell you how to combine custom-defined gestures and general gestures together in
Android Combine Custom And General Gestures Example Read More »
When you create a new android project in android studio, you may encounter an error message like below. Error:Execution failed for task ‘:app:preDebugAndroidTestBuild’. > Conflict with dependency ‘com.android.support:support-annotations’ in project ‘:app’. Resolved versions for app (26.1.0) and test app (27.1.1) differ. See https://d.android.com/r/tools/test-apk-dependency-conflicts.html for details.
Fix Conflict With Dependency Error When Creating Android Project Read More »
Async module is a third party Node JS module which can make a collection of javascript function executed by control. This article will tell you how to install async module and how to use it’s various methods to control your Node JS application’s work flow.
Node JS Async Module Example Read More »
If you want to use Windows 7 in macOS, you always need to install VMware Fusion and create a Windows 7 virtual machine in it. You can read the article How To Install VMware Fusion Virtual Machine On Mac Correctly to learn how to do it. But after that, you may also need to share
How To Share Wi-Fi And Directory Between MacOS And Win7 Virtual Machine Read More »
Recently when I install VMware Fusion on macOS, I meet the error “Could not open /dev/vmmon: No such file or directory” during the installation process. When I investigate this error, I found this error happened not only on macOS, but also when you start VMWare on Linux, this article will tell you how to fix
This example is a user account register and login demo implemented with node.js. The function is simple but is enough to demonstrate how to use node js to create a request router, how to create and use a custom node js module, and how to use http, url, and querystring built-in modules.
Node JS User Registration Login Example Read More »