The document is an introduction to Android development, outlining the necessary tools and setup steps to build an app. It details the components included in the Android SDK, such as APIs, development tools, and sample code, as well as the different types of Android applications. Additionally, it provides a simple example of creating a basic Android activity in code.

1. Introduction To Android
Development - Build an App!
http://simpledeveloper.com
@Eenvincible

2. Tools of Trade
● Java Runtime Environment
○ http://bit.ly/bMkbpo
● Android SDK
○ http://bit.ly/3jNWwL
● Eclipse IDE
○ http://bit.ly/5YPO6
● ADT Plugin for Eclipse
○ http://bit.ly/LEzF6s SETUP

3. Simple Setup
Step 1 - Download the Java Runtime Environment
if you don't have one already!
Step 2 - I recommend you download the SDK
Bundle instead of downloading the tools
separately.
Step 3 - If you chose not to download the bundle,
download Android SDK, Eclipse and then from
within Eclipse, Install the ADT Plugin and you will
be ready to go.

4. Android: What Comes In The Box
Every Android SDK Download Comes With :
a.The Android APIs
b.Development Tools
c.The Android Emulator
d.Full Documentation
e.Sample Code
f. Online Support

5. Types of Android Applications
● Foreground Activity
○ Only useful when in foreground
● Background Activity
○ Limited interaction except during config
● Intermittent Activity
○ Expects interaction but works background

6. Your Very First Activity
Every Activity is a subclass of the Activity class
The simplest Android application project will have
an activity like this:
import android.app.Activity; import android.os.Bundle;
public class HelloWorld extends Activity{
/*called when activity is created*/
@override
public void onCreate(Bundle icicle){
super.onCreate(icicle);
setContentView(R.layout.main);
}