Android Tutorials

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STEP 1: Open Eclipse --> Click File

STEP 2: Click new --> project

STEP 3: Select Android Project --> Click next

STEP 4: Enter project Name --> Click Next

STEP 5: Select the Version ---> Click Next

STEP 5: Enter the package name ---> Click Next

note: package name must have one dot with two names

example : ( and.com) (s.s) (an.pac.com) (s.s.s) etc...

STEP 6: See the project Explorer window, project is present there. If project Explorer not open, Click Window --> show view --> project Explorer

STEP 7: Expand your project

STEP 8: Expand res folder in your project

STEP 9: Expand layout folder

STEP 10: open main.xml

Main.xml have two views.

1.Graphical layout : In this we can do drag and drop controls here. xml codes
generated automatically while designing in graphical layout.

2.main.xml : In this We can write xml codings here for generating and aligning controls here.

(Those two tabs present in left below of black screen)

STEP 11: click main.xml tab.

STEP 12: Delete all codings in main.xml and add following codings.
(put double quotes correctly in the xml program)

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >

<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />

<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="This is my first Android Application!" />

<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="And this is a clickable button!" />

</LinearLayout>

then click Graphical Layout tab.

android:text="@string/hello"

In this line, @string refers a file. This file present in res --> values --> Strings.xml

Open Strings.xml --> It have two tabs. 1. Resources 2. strings.xml

Click strings.xml tab.

android:text="@string/hello"

hello represents Hello World, HelloworldActivity!

app_name represents projectname

STEP 13: click Save all ( ctrl+shift+s)

STEP 14: click run ( Ctrl +F11)

select Android Application.

OUTPUT: