This document provides an overview of the Android operating system. It discusses Android architecture, which is based on Linux and uses a custom Java virtual machine. It also covers installing the Android development environment and tools, application permissions, activities and their lifecycle, using adapters to display lists and images, intents for launching activities and searches, menus, and AsyncTasks for asynchronous operations.

1. Android overview

2. Alternatives
Apple iOS (unix based)
Microsoft Windows Phone 7
Nokia Meego, Maemo, Symbian
RIM BlackBerry OS
HP (Palm) WebOS
Samsung Bada
Ubuntu mobile

3. Architecture
Linux + Custom Java VM

4. IDE & Installation
3
1
4
2
5

5. Application — Permissions

6. Application — View

7. Application — View / source
@+id/some_field_id
@drawable/icon
@string/some_translation
dip units
layouts
LinearLayout
RelativeLayout
FrameLayout
TableLayout
AbsoluteLayout

8. Application — Activity

9. Application — Activity lifecycle

10. Application — Adapters
UI Receivers:
• ListActivity
• Gallery
• GridView
• Spinner
setListAdapter(new ArrayAdapter(this,
android.R.layout.simple_list_item_1, //template
new String[]{"item 1", "item 2"} //data
));

11. Application — Adapters
ImageAndTextListAdapter notes = new ImageAndTextListAdapter(MessagesActivity.this,aCalls);
setListAdapter(notes);

12. Application - Intent
startActivity(new Intent(MyKillerActivity.this, MyWeakMinionActivity.class));
startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("http://opus.ee")));
Intent search = new Intent(Intent.ACTION_WEB_SEARCH);
search.putExtra(SearchManager.QUERY, "куплю снег");
startActivity(search);

13. Application - Menu

14. Application — AsyncTask

15. Docs
Stackoverflow