Author: guru

NodeMcu Hardware 0

Introduction to NodeMCU (ESP8266) – IOT

Today we will be looking one of the popular Internet of Things(IOT) device ESP8266. This small module allows micro-controllers to connect to a Wi-Fi network and make simple TCP/IP connections using Hayes-style commands. What the...

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Replace Android AsyncTask with RxJava

Today is the day when we will say goodbye to AsyncTask. It will be replaced by our new friend RxJava which is quite in news now a days. We will be covering how RxJava...

rxjava 5

RxJava Android Tutorials

In this series of posts i will be covering RxJava which can used in android for asynchronous work. It extends the observer pattern to support sequences of data/events and adds operators that allow you...

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Android Volley Library Tutorial

Volley is a networking library that manages network requests and their response caches without the developer having to write a lot of “boilerplate” code.  Volley implements tools that allow for simultaneous requests to run...

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Android Application Build Overview

The Android build system is the toolkit you use to build, test, run and package your apps. The build system can run as an integrated tool from the Android Studio menu and independently from...

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Wrapper class in java

Java is an object-oriented language and can view everything as an object. A simple file can be treated as an object , an address of a system can be seen as an object ,...

WeakReference in Java 0

WeakReference in Java

WeakReference is related to garbage collection. Normally, object having one or more reference will not be eligible for garbage collection. Then above rule is not applicable when it is WeakReference. Weak references allow you...

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Android Loopers and Handlers – Code Tutorial

In our last post we tried to understood the concept of Looper and Handler. Now let us implement these in this tutorial. We will be creating a download manager which download files(we are using delay...

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Android Live wallpaper Tutorial

Live Wallpapers are animated , interactive backgrounds for the Android home screen. A live wallpaper is similar to other Android applications and can use most of the same functionality. How to create a live wallpaper...