Android 101 DevFest Berlin 2012

Slides of my Android 101 session at the DevFest Berlin 2012

Transcript

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