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Introduction and Example of Eventbus in Android.

EventBus is a library of Greenbot . This is very simple for all users how to implement and its basic use. Here I will also share examples for better understanding. What is EventBus? EventBus is subscribed/publish event bus to communication between components with limited lines of code, in short, its bus for events transfers the data between one activity(class) to another to reflect the changes based on our needs. That makes the data exchange between components like Activity, Fragment, Services, and any kind of backgrounds threads pretty easy. EventBus can handle the threading for us: events can be posted in threads different from the posting thread. Common use can be dealing with UI changes. In Android, UI changes must be done in the Main(UI) thread. In other words, networking or more time-consuming task cannot be handled in the Main thread, for that we must use AsyncTask or Handler to make it more smooth. Now we have one more options use EventBus to change the UI po
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Part - 2: Webservice running in Android with Database


If you do not completed simple example for how to call soap service from android then please look at my

After successfully understand the basic info from Part - 1, we moved to another advance example with database connectivity. Our android application connected with database, return value and display in our Android device.

Here, I am using Microsoft SQL Server Database connectivity, you can use your preferred database.

Before start the our implementation we first download the required library files for our use.

1. SQL Connectivity jar file for Webservice : http://www.4shared.com/file/IxoPooiE/sqljdbc.html
2. Ksoap Library file for Android : http://www.4shared.com/file/uOhx5aoj/ksoap2-android-assembly-24-jar.html

Dynamic Web Project

First we create webservice project. In that project we are connecting SQL database and write connection between them to retrieve the books data. Once its completed then move to Android application.

1. Create Dynamic Project using your IDE (Eclipse)

2. BookData.java (Bean/Model).

3. Add SQL.jar file to lib folder.

4. GetDatabaseRecords.java

5. Now Right click on GetDatabaseRecords.java file and select "WebService" option. Now further step is same as my Post Part 1:

6. Click finish.

Here the Dynamic Webservice Project part is completed. I hope you do not have any question till now.


Android Application

1. Create Android Application which calling above our webservice part.

2. Add Ksoap.jar Library into Android application

3. MainActivity.java

4. Now run your Android project and it will display book details on your device.

 Please leave your comment/query here, if you still facing any problem.


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Location: Rajkot, Gujarat, India

Comments

  1. Unknown28 January 2016 at 17:20

    Brother, I am stuck somewhere in calling the webservices from Android device. I have searched so many blogs but did not get any satisfactory solution. Can you please help. I need to display the array values in my webservice to my android device. The webservice call from android confusing me. How to display the whole list values from Webservice to android. If you reply i will send the complete code of android. Thanks

    ReplyDelete

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