Android support drag and drop action since SDK version 11. You can drag any view component from the source container and drop it to another container ( view component ). This example will show you how to implement drag and drop action in android.
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This example will tell you how to check and display swipe gesture direction in the android application. It also shows how to know whether the user single-tap or double-taps the android device screen. If you want to know basic knowledge about how to listen and respond to user gestures in the android app, please read
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Android uses an event queue to manage events generated by the system or device user. When an event occurred ( for example when a user clicks a button it will trigger the on-click event ), the event will be placed in the event queue. All the events in the queue comply with the FIFO (
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android.widget.GridLayout is a layout manager used to arrange child views in a grid. You can specify how many columns and rows the grid have with it’s rowCount or columnCount property. You can change the GridLayout object size by specifying it’s layout_margin property. You can even use it’s child view’s layout_rowSpan or layout_columnSpan property to merge
Android Gridlayout Example Programmatically Read More »
The android app runs in android OS, and Android OS provides a lot of functions for your app to use. So master android architecture can give you a clear overview of what you are doing, what other services and components android OS can provide, and which library should you use when you need it.
Android Architecture Components Introduction Read More »
When you create the android project in android studio, there are a lot of activity templates you can choose which are provided by android studio. For android beginners, the basic activity and the empty activity always make them confused. So what is the difference between them, let me tell you now.
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When I start an android virtual device ( AVD ) in my new machine ( which I just bought these days.), I meet an error message like this Qemu-System-X86_64.Exe Has Stopped Working. This error stopped my android virtual machine to start. After investigate for almost half a day, I finally find the reason why this
How To Fix Qemu-System-X86_64.Exe Has Stopped Working Error When Starting AVD Read More »
Retrofit is an open-source java library that can be used as the web service client API. It can help you construct a web service access url, send the request to web service by numerous HTTP methods such as GET, POST, DELETE, etc. It can also send parameters such as url query string or HTML form
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Google map is the best digital map in the world. So embed google Maps in the android applications is very user-friendly and can improve user experience. Google provides android APIs for android developers to integrate the google map service in their android application. This article will tell you how to do it step by step.
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Glide is a famous image loading and management open source library contributed by Bump Technologies. It can be used to load any format image ( gif, png, jeg etc ). It is often used in android application. It is fast and easy to use. This article will tell you how to use it.
Android Glide Example Read More »