Android runs on the top of Linux Operating System.
It has Dalvik Virtual Machine (DVM), optimized for mobile phones.
It is integrated browser based on Web kit engine.
Open GL ES for graphics.
Sqlite Support for database.
Media Support
GSM Technology
Bluetooth, EDGE, 3G, wi-fi
Application Fundamentals
It is mostly written in java programming language.
Final output of the android program is .apk file.
Android consist of Components, resources, and AndroidManifest file.
Components of Android are:-
Activities
Services
Content...
Tuesday, 30 July 2013
Monday, 29 July 2013
How to Send Email in Android Programmatically
Today we will learn how to Send Email in android Programmatically. To demonstrate this , I have made a demo project named SendEmail. In this project I have three Textview one for Email Address, one for Subject and last one for message. I am also having one send button,on the tap of it a chooser will popup asking for Gmail client.
Step 1:- create main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
...
Sunday, 28 July 2013
Send sms in Android Programmatically
Today we will learn how to send Sms in android Programmatically. It is often required to have the functionality in your application where you want to send some important message or information to other user/receiver. To demonstrate this functionality I have created a simple demo project named Smsdemo. In this project we will be having two text view one for entering number and one for text or message and one send button. On the tap of it, the message will send to number entered number.
Step 1:- create a layout in the project...
List in Android using ListActivity Class
List View is one of the group in android, that displays a list of scrollable items. The display of elements in a lists is a very common pattern in mobile applications. The user sees a list of items and can scroll through them. An Adapter is used to list the elements in scrollable manner, which in turn gets the data from the source such as an array or from the database and convert each elements into a view of list.
Some of the commonly used Adapter are :-
ArrayAdapter
CursorAdapter
SimpleCursorAdapter
Lets Begin...
Friday, 26 July 2013
Check Network Connectivity In Android
Today Android Application have lot of dependency on the network to perform functionality. So it is very important to find out if is our device connected to the network before performing any network related task. So, how will you find out if your device connected to the network programmatically.
Lets follow the following steps:-
I have made a separate class to check connection, named CheckConnection.javaThis class will help you to find out the network connection of your device. Just create the instance of the class where ever...
Thursday, 25 July 2013
Bar Chart in Android using aChartEngine
Today we will covered about Bar Chart in android using aChartEngine. To make the bar graph in android, first you have to download the achartengine.jar from code.google.com/p/achartengine/downloads/list. After successfully downloaded the jar file, put that jar file in your libs folder of your android structure. Now take the following step Step 1:-<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" ...
Image Toast in Android
In android we have seen the simple Toast message, that will display simple text. But Today I told you how to display an image along with the toast message.
In this application, on the Button click a simple toast will pop out along with image.
Lets begins with the sample for Image Toast in Android.
Step 1:- activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
...
Block Incoming Calls Android
Today I will Explain how to block all incoming calls in android. To block the incoming calls I have to use Broadcast Receiver.
Broadcast Receiver is one of the main android component which allow your application to register for the Events i.e system or application events(Both). Registered Event will be notified by the android run time once the event occurs.
Step 1: create BlockCallReceiver.java
package com.arpit.blockincomingcall;
import java.lang.reflect.Method;
import android.content.BroadcastReceiver;
import android.content.Context;
import...
Pie Charts in Android Using achartEngine
We often Required to present data in Pictorial View(chart) in our android application. Today I will implement the pie chart using achartengine library for android application. I have downloaded the library achartengine.jar from http://www.achartengine.org/
Create an android Project in your Eclipse IDE, I have created one with named GraphChart.
Step 1:- Add chart activity in manifest
GraphChartManifest
<?xml...
Wednesday, 24 July 2013
Reading Contacts in a List Android
In Android Application it is often required to read the contacts from the Phone Contact Book and perform some operation. Today we study how to read Contacts from your phone and display them in a list. To do the same, set up a project in Eclipse IDE.
Set up the Main Xml where the List populate:-
main.xml:-
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
...
Friday, 19 July 2013
Android Splash Screen
Today we will covered how to make Android Splash Screen. Splash is the first screen in the Standard Mobile Application which holds itself for 5-10 seconds before moving to the main screen. Splash screen is useful where we could initialize application level variable or run any background process.Apart from that, we Could have image of company making that application or application name itself. After Setting up the project,...
