Hero Apps

Create “Hello World” application. That will display “Hello World” in the middle of the screen in the
red color with white background.

Click Below Link to download Hello World Application. Although i recommend you to read below steps to understand how to develop Android Application

Download Hello World Android Application

Create Hello World Application follow these basic steps. Below Steps are after the configuration of SDK Manager and eclipse.
STEP 1
Start Eclipse and Choose Workspace where you want to save your project

STEP 2 
Click on the file menu -> Select New -> Choose Android Project
 New Android Project Dialog will displayed and fill the required information and click on the finish button



Here In Above Dialog box Create Activity is the name of class you want to specify for your default Activity which will be loaded first when Hello World Example will be executed.


STEP 3
From the Project explorer click on the HelloWorld  -> res - > layout. it will show the main.xml inside layout folder. double click on the main.xml. By clicking on main.xml it will show something like.

Drag the Text View Control from  left panel to black box. and click on the main.xml tab show bottom left near Graphical Layout. now the main coding or designing part starts.

Main.xml file content for Hello World Example

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    android_orientation="vertical"
    android_layout_width="fill_parent"
    android_layout_height="fill_parent"
    android_background="#999">
 
    <TextView
        android_layout_height="fill_parent"
        android_text="Hello World"
        android_textColor="#900"
        android_id="@+id/textView1"
        android_layout_width="fill_parent"
        android_gravity="center_vertical|center_horizontal">
    </TextView>

</LinearLayout>

 

 

Program no 2

a)  Create Sample Application With login module. (Check Username and Password)
b)  On Successful Login , go to next Screen , And on Failing login , alert user using Toast. Also Pass Username to next Screen.

Below android program will ask you to enter username and password and a button to submit the text to next screen.

when you press the submit button the username you have entered in the edittext view will be passed to the sub activity.

to create such application you need to use startActivity and pass the intent object which will start sub activity. and add the putExtra method to Pass value along with the activity

from the sub activity page you need to use getintent() to get the last intent which will return the intent refrence.

from the specified intent reference you call the appropriate get method to access the value in sub activity page

Download Activity and Sub Activity Example

Your Comment are most Welcome. if you find any difficulty in this you can  comment us