Tag Archives: onCreate

CRUD Operations in SQLite using SQLiteOpenHelper – Android

By | June 26, 2016

We do SQLite operations in Android by extending the SQLiteOpenHelper Class. I will create an Employee table with three fields id name company. I have a model class same as the database table Employee. Employee.java Lets see How we can do the CRUD (Create, Read, Update and Delete) Operations. CREATE We create a class that extends the SQLiteOpenHelper.… Read More »

Uploading Image to Server – Android Eclipse Version.

By | February 18, 2016

Hi all, In today’s tutorial I will show you how to send an image to server using POST method in ANDROID. If you are working in Android studio, then checkout the article here. Uploading an image to server is a basic requirement in many of our application. Sending data to server which is using a PHP Script is… Read More »

How to write interfaces in java or Android?

By | February 7, 2013

This tutorial is about how to use interfaces in java or Android. What is an Interface? An interface is a collection of abstract methods. A class implements an interface, thereby inheriting the abstract methods of the interface. An interface is not a class. Writing an interface is similar to writing a class, but they are two different concepts.… Read More »

How to load a spinner with values from SQlite Database in android?

By | November 18, 2012

Here is a simple example showing how to load a database values in a spinner in android. OK we will start. This is the layout for the spinner row. spinner_row.xml This is the layout for the interface. activity_main.xml Now this is the MainActivity.java file that uses the spinner and the database. Join the Forum discussion on this post… Read More »

Using Tabbars in ANDROID, A Simple Example……….

By | April 22, 2012

This is a simple example showing how to use tabbars in ANDROID. First create a new project and copy this code to it. Now create three another java files by right clicking the src folder and name it FirstTab.java, SecondTab.java, ThirdTab.java. Now copy the following code to FirstTab.java. SecondTab.java Now ThirdTab.java. Main.xml file AndroidManifest.xml You can place anything… Read More »

How to check whether an application is installed in your ANDROID Phone?

By | March 28, 2012

This sample code comes handy when you have to check that an application is already installed in your ANDROID Phone. Call the below function appInstalledOrNot() with the package name of the app installed on the ANDROID Device as a string parameter. This function returns true if the app is installed otherwise returns false.

How to place layouts one over another in android using addContentView()?

By | February 10, 2012

Hello all… In today’s tutorial I will show you how to add different layouts one over another in android through java code. For this we use the function addContentView() which is a variation on setContentView(View, android.view.ViewGroup.LayoutParams) to add an additional content view to the screen. Here I will create an xml with a textView and a Edittext and… Read More »

Changing the style or theme of default alertDialog in Android.

By | February 3, 2012

Hello everyone, Here is a simple example showing how to change the theme of default AlertDialog in android. Check this post before for understanding how to use styles. https://www.coderzheaven.com/2012/04/17/inherit-styles-extend-styles-android/ To start first create a fresh project named AlertTest. In the AlertTestDemo.java file copy this code Now create a file named “styles.xml” inside the res/values folder and copy this… Read More »

Saving TextFile to SDCARD in android?

By | January 29, 2012

Hello android lovers, In today’s tutorial I will show you how to 1. Create a text file and save a textfile in your SDCARD in your preferred path. 2. Read the contents from the same file and show it in a TextView. For writing a file we use the FileWriter class and for reading the textfile we use… Read More »

Starting PhoneGap for ANDROID.

By | January 4, 2012

Hello everyone…. In today’s tutorial I will show how to start with a HelloWorld Application in PhoneGap for ANDROID. So what is PhoneGap PhoneGap is an HTML5 app platform that allows you to author native applications with web technologies and get access to APIs and app stores. Follow these steps exactly to build the helloworld application. 1.If you… Read More »

How to show a sliding window from below in Android?

By | December 22, 2011

Hello everyone, I have already showed you how to use a SlidingViewer to create a slidingWindow. Today I will show another way to create such a window with the help of animation. Please check one of my previous posts to do this in another way. How to show a sliding window from below in Android? Check this new… Read More »

SlidingDrawer in Android, A simple example.

By | December 1, 2011

Sliding-Drawer in a nice and useful widget in android. Please check one of my previous posts to do this in another way. How to show a sliding window from below in Android? Check this new One using Navigation Drawer About Sliding drawer SlidingDrawer hides content out of the screen and allows the user to drag a handle to… Read More »

How to Upload Multiple files in one request along with other string parameters in android?

By | August 16, 2011

Hello everyone, I have shown two methods to upload files in android. In today’s tutorial I will show another simple method to upload files. With this method you can upload multiple files in one request + you can send your own string parameters with them. Here is another method on working with uploading of images. How to upload… Read More »

Global variables in ANDROID……

By | May 17, 2011

Hi all……. In today’s exampl e I will show you how to deal with global variables in ANDROID. You know global variables are those variables that you can access across any variables. It’s value becomes changed when you change it in any of the classes in your project. These types of variables act as like cookies in a… Read More »

How to use Global variables in ANDROID?

By | May 17, 2011

Hi all……. In today’s exampl e I will show you how to deal with global variables in ANDROID. You know global variables are those variables that you can access across any variables. It’s value becomes changed when you change it in any of the classes in your project. These types of variables act as like cookies in a… Read More »

How to send email from and ANDROID Application programatically?

By | May 16, 2011

Hello all…….. In today’s post I will show you send mail from an android application progrmatically.. Let’s go to the code fast…… This is the code in the mail java file…. Now the layout file (main.xml) The AndroidManifest.xml Note: However if you test this in your emulator, it will not work. Install it in your device to test… Read More »

TextView with link in ANDROID…….

By | May 10, 2011

Hi all……. All of you may be familiar with TextViews in ANDROID. But how many of you know that we have have html as text in a textView. This post is a simple example to show this. Create a fresh project and copy this code to the main java file. The main.xml The AndroidManifest.xml file

ANDROID Tabbars Example……..

By | May 9, 2011

This is a simple example showing how to use tabbars in ANDROID. First create a new project and copy this code to it. Now create three another java files by right clicking the src folder and name it FirstTab.java, SecondTab.java, ThirdTab.java. Now copy the following code to FirstTab.java. SecondTab.java Now ThirdTab.java. Main.xml file AndroidManifest.xml You can place anything… Read More »

Using Tabbars in ANDROID, A Simple illustration……….

By | May 9, 2011

This is a simple example showing how to use tabbars in ANDROID. First create a new project and copy this code to it. Now create three another java files by right clicking the src folder and name it FirstTab.java, SecondTab.java, ThirdTab.java. Now copy the following code to FirstTab.java. SecondTab.java Now ThirdTab.java. Main.xml file AndroidManifest.xml You can place anything… Read More »

Using Tabbars in ANDROID, A Simple Example……….

By | May 9, 2011

This is a simple example showing how to use tabbars in ANDROID. First create a new project and copy this code to it. Now create three another java files by right clicking the src folder and name it FirstTab.java, SecondTab.java, ThirdTab.java. Now copy the following code to FirstTab.java. SecondTab.java Now ThirdTab.java. Main.xml file AndroidManifest.xml You can place anything… Read More »

How to split a String in ANDROID?

By | May 5, 2011

Hi all….. Splitting a string in android is really easy.checkout the following snippet. Check the Logcat for output. Note: Make sure to put the escape character before the delimiter for splitting,otherwise the output may be each character.

Listening incoming sms message in Android

By | May 1, 2011

When a new sms message is received by the device, a Broadcast Receiver is registered. For this IntentFilter filter = new IntentFilter(SMS_RECEIVED); registerReceiver(receiver_SMS, filter); should be included . Also sms are sent in PDU’s(Protocol Description Units) format, which act as an encapsulation. Inorder to extract from PDU to byte array messages[i] = SmsMessage.createFromPdu((byte[]) pdus[i]); method is used. When… Read More »

Customizing your button or TextView or another view in ANDROID.

By | April 30, 2011

Beautifying our applications is one of the main features of your application’s success. In ANDROID there are many possible ways to do this. For eg. We need to have different colors for our buttons, However we can give backgrounds for buttons and all. But we can do many by using our custom xml files, like changing colors on… Read More »

How to create and delete a directory in SdCard in ANDROID?

By | April 27, 2011

Hi all…… This is a simple example to create and delete a directory in ANDROID. Here the directly is created in the SDCARD. So first create an SDCARD and start the emulator with the SDCARD. Let’s look at the program. Use can use this program to create or delete a file in ANDROID also. main.xml Now go to… Read More »

ANDROID – Upload an image to Server in Android Studio

By | April 25, 2011

Hi all, In today’s tutorial I will show you how to send an image to server using POST method in ANDROID. Uploading an image to server is a basic requirement in many of our application. Sending data to server which is using a PHP Script is already explained in this example . Now in this example I will… Read More »