Username Availability Check Android Application using Java RESTful Webservice

In this post, I will be discussing on how to create Android application to check if the username typed by user is available to choose or not.

When it comes to Username availability check, I always remember Google registration page where it checks for the username availability once you finished typing username and moved to next form control and also it updates the User whether the Username is available to pick or not.

I tried to register with username that already exists, I just captured the screen-print of it.

Take a look at it below:

Google_Username_Availability_Check

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How to sync Remote MySQL DB to SQLite on Android?

In this post, I am going to explain how to sync data present in remote MySQL DB to Android SQLite database. The data present in the remote MySQL DB (or any Database) needs to be synced with SQLite DB in Android in order to maintain the data integrity.

If there is change in remote DB data, it can be synced with Android SQLite DB when User explicitly hits ‘Sync’ button or asynchronously by the application itself (in particular interval) when Internet connectivity is available.

Before we start developing the application, quickly take a look at the prerequisites below.

Prerequisite:

You must have knowledge of SQLite before you start creating the application. Have a glance at the below articles which will make you understand much about SQLite

What is SQLite?

Android SQLite CRUD example

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Android Restful Webservice Tutorial – How to call RESTful webservice in Android – Part 3

In the Android RESTful tutorial series , I am discussing about creating and invoking RESTful webservice in Android applications.

In this particular post, I am going to discuss about how to invoke RESTful webservice (that has been created and deployed in local application server) from inside Android applications.

I already discussed about What is RESTful webservice and how to create it in couple of posts earlier. Have listed those posts links below, it would be helpful for you if you quickly take a look at those articles.

If you are new to RESTful webservice, I would recommend you to take a look at Introduction to RESTful webservice

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Android Restful Webservice Tutorial – How to create RESTful webservice in Java – Part 2

In the Android RESTFul tutorial series , I am discussing about creating and invoking RESTful webservice in Android applications.

In this particular post, I am going to discuss about how to create RESTful webservice using Java.

If you are new to RESTful webservice, I would recommend you to take a look at Introduction to RESTful webservice

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Android Restful Webservice Tutorial – Introduction to RESTful webservice – Part 1

The most buzzing questions among Android developers are:

  1. How to call webservice in Android applications that has been created using Java or Dot Net?
  2. How to invoke RESTful webservice in Android applications?
  3. How to call SOAP webservice in Android applications?

Here in Android Tutorial Blog, we have already discussed lot about using Webservice in Android applications. Take a look at Android Webservice Tutorial to know list of articles we wrote on webservice.

Integrating Android application and Webservice is not that much difficult. We can make it work if we know basics of webservice and the procedure to make webservice call from inside Android applications.

In this post, I will be discussing about creating and invoking RESTful webservice in Android applications.

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