Slides for my Android 101 session at the 2012 Berlin DevFest.

1. Android 101 workshop
Getting started with Android development

2. Benjamin Weiss
http://gplus.to/keyboardsurfer
Twitter: @keyboardsurfer
Senior Software Developer
at ImmobilienScout24
Organizer: GDG Android in Berlin
Co-Organizer:
●Global Android Dev Camp
●GTUG Community Weekend
●Google I/O Extended Berlin 2012
●DevFest Berlin 2012

3. Agenda
● The Setup
● Hello Android
● AndroidManifest.xml
● Intents
● Views
● Respond to user-interaction
● Using libraries
● Hands on

4. The Setup
Platform of choice
Linux
Mac
Windows
Android

5. The Setup
Development Environment
http://eclipse.org
https://www.jetbrains.com/idea
AIDE
https://play.google.com/store/apps/details?
id=com.aide.ui

6. The Setup
Android SDK
https://developer.android.com/sdk/index.html

7. Hello Android

8. AndroidManifest.xml
https://developer.android.com/
guide/topics/manifest/
manifest-intro.html

9. AndroidManifest.xml
<manifest>
<activity-alias>
<uses-permission /> <intent-filter> . . . </intent-filter>
<permission /> <meta-data />
<permission-tree /> </activity-alias>
<permission-group />
<instrumentation /> <service>
<uses-sdk /> <intent-filter> . . . </intent-filter>
<uses-configuration /> <meta-data/>
<uses-feature /> </service>
<supports-screens />
<compatible-screens /> <receiver>
<supports-gl-texture /> <intent-filter> . . . </intent-filter>
<meta-data />
<application> </receiver>
<activity> <provider>
<intent-filter> <grant-uri-permission />
<action /> <meta-data />
<category /> </provider>
<data />
</intent-filter> <uses-library />
<meta-data />
</activity> </application>
</manifest>

10. AndroidManifest.xml
<manifest>
<activity-alias>
<uses-permission /> <intent-filter> . . . </intent-filter>
<permission /> <meta-data />
<permission-tree /> </activity-alias>
<permission-group />
<instrumentation /> <service>
<uses-sdk /> <intent-filter> . . . </intent-filter>
<manifest xmlns:android= "http://schemas.android.
<uses-configuration /> <meta-data/>
<uses-feature /> </service>
com/apk/res/android"
<supports-screens />
android:installLocation="auto" <receiver>
<compatible-screens />
<intent-filter> . . . </intent-filter>
<supports-gl-texture />
package="my.package.name" <meta-data />
</receiver>
android:versionCode="42"
<application>
android:versionName="theLifeTheUniverseAndEverything-Beta"
<activity> <provider>
<intent-filter> <grant-uri-permission />
> <action /> <meta-data />
<category /> </provider>
<data />
</intent-filter> <uses-library />
<meta-data />
</activity> </application>
</manifest>

11. AndroidManifest.xml
<manifest>
<activity-alias>
<uses-permission /> <intent-filter> . . . </intent-filter>
<permission /> <meta-data />
<permission-tree /> </activity-alias>
<permission-group />
<instrumentation /> <service>
<uses-sdk /> <intent-filter> . . . </intent-filter>
<uses-configuration /> <meta-data/>
</service>
<uses-feature />
<uses-permission />
<supports-screens />
<compatible-screens /> <receiver>
<supports-gl-texture /> <intent-filter> . . . </intent-filter>
<meta-data />
<application> </receiver>
<activity> <provider>
<intent-filter> <grant-uri-permission />
<action /> <meta-data />
<category /> </provider>
<data />
</intent-filter> <uses-library />
<meta-data />
</activity> </application>
</manifest>

12. AndroidManifest.xml
<manifest>
<activity-alias>
<uses-permission /> <intent-filter> . . . </intent-filter>
<permission /> <meta-data />
<permission-tree /> </activity-alias>
<permission-group />
<instrumentation /> <service>
<uses-sdk /> <intent-filter> . . . </intent-filter>
<meta-data/>
!
<uses-configuration />
</service>
<uses-feature />
<uses-permission />
<supports-screens />
<compatible-screens /> <receiver>
<supports-gl-texture /> <intent-filter> . . . </intent-filter>
<meta-data />
<application> </receiver>
<activity> <provider>
<intent-filter> <grant-uri-permission />
<action /> <meta-data />
<category /> </provider>
<data />
</intent-filter> <uses-library />
<meta-data />
</activity> </application>
</manifest>

13. AndroidManifest.xml
<manifest>
<activity-alias>
<uses-permission /> <intent-filter> . . . </intent-filter>
<permission /> <meta-data />
<permission-tree /> <activity> </activity-alias>
<permission-group />
<instrumentation />
<intent-filter>
<service>
<uses-sdk /> <action /> <intent-filter>
<meta-data/>
. . . </intent-filter>
<uses-configuration />
<uses-feature /> <category />
</service>
<supports-screens />
<compatible-screens />
<data /> <receiver>
<supports-gl-texture /> </intent-filter>
<intent-filter> . . . </intent-filter>
<meta-data />
<application>
<meta-data </receiver>
/>
</activity> <provider>
<activity>
<intent-filter> <grant-uri-permission />
<action /> <meta-data />
<category /> </provider>
<data />
</intent-filter> <uses-library />
<meta-data />
</activity> </application>
</manifest>

14. AndroidManifest.xml
<manifest>
<activity-alias>
<uses-permission /> <intent-filter> . . . </intent-filter>
<permission /> <meta-data />
<permission-tree /> <activity> </activity-alias>
<permission-group />
<instrumentation />
<intent-filter>
<service>
<uses-sdk /> <action /> <intent-filter>
<meta-data/>
. . . </intent-filter>
!
<uses-configuration />
<uses-feature /> <category />
</service>
<supports-screens />
<compatible-screens />
<data /> <receiver>
<supports-gl-texture /> </intent-filter>
<intent-filter> . . . </intent-filter>
<meta-data />
<application>
<meta-data </receiver>
/>
</activity> <provider>
<activity>
<intent-filter> <grant-uri-permission />
<action /> <meta-data />
<category /> </provider>
<data />
</intent-filter> <uses-library />
<meta-data />
</activity> </application>
</manifest>

15. Intent
An intent is an abstract description of an
operation to be performed.
It can be used with startActivity to launch
an Activity, broadcastIntent to send it
to any interested BroadcastReceiver
components, and startService(Intent)
or bindService(Intent,
ServiceConnection, int) to
communicate with a background Service.

16. Intent
An intent is an abstract description of an
operation to be performed.
It can be used with startActivity to launch
an Activity, broadcastIntent to send it
to any interested BroadcastReceiver
components, and startService(Intent)
or bindService(Intent,
ServiceConnection, int) to
communicate with a background Service.

17. Intent
An Intent provides a facility for performing late
runtime binding between the code in different
applications.
Its most significant use is in the launching of
activities, where it can be thought of as the
glue between activities.
It is basically a passive data structure holding
an abstract description of an action to be
performed.

18. Intent
An Intent provides a facility for performing late
runtime binding between the code in different
applications.
Its most significant use is in the launching of
activities, where it can be thought of as the
glue between activities.
It is basically a passive data structure holding
an abstract description of an action to be
performed.

19. Intent

20. Views
<?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"
android:paddingLeft ="16dp"
android:paddingRight ="16dp"
android:orientation ="vertical" >
<EditText
android:layout_width ="fill_parent"
android:layout_height ="wrap_content"
android:hint ="@string/to" />
<EditText
android:layout_width ="fill_parent"
android:layout_height ="wrap_content"
android:hint ="@string/subject" />
<EditText
android:layout_width ="fill_parent"
android:layout_height ="0dp"
android:layout_weight ="1"
android:gravity ="top"
android:hint ="@string/message" />
<Button
android:layout_width ="100dp"
android:layout_height ="wrap_content"
android:layout_gravity ="right"
android:text ="@string/send" />
</LinearLayout>

21. Views
public class OneOhOneDemo extends Activity{
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
...
}

22. Views

23. User interaction
someView.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
//handle event
}
});

24. Libraries

25. Libraries
● Support Library
● android-json-rpc
● oauth-signpost
● greenDAO
● GSON
● ...

26. Important links
https://developer.android.com
https://developer.android.com/sdk/index.html
https://developer.android.com/guide/components/index.html
https://developer.android.com/training/basics/firstapp/index.html
https://stackoverflow.com
http://www.openintents.org/en/libraries

27. Questions

28. Get your keyboards
clicking!

29. Thank you
Benjamin Weiss
http://gplus.to/keyboardsurfer
Twitter: @keyboardsurfer

30. Image Sources
● http://www.devfest.info/images/vhabig.png
● https://en.wikipedia.org/wiki/Linux
● https://en.wikipedia.org/wiki/Windows
● https://en.wikipedia.org/wiki/Windows
● https://d.android.com
● http://www.eclipse.org/artwork/
● https://www.jetbrains.com/img/logos/logo_intellij_idea.gif
● https://play.google.com/store/apps/details?id=com.aide.ui
● https://developer.android.com/sdk/index.html
● https://developer.android.com/reference/packages.html
● https://developer.android.com/guide/topics/ui/layout/linear.html
● http://curiousexpeditions.org/?p=78
● http://actionbarsherlock.com
● https://code.google.com/p/roboguice
● http://marie-schweiz.de