Android Development - Snippets

Android Cheat Sheet

Android - Cheat Sheet

Activities

Android - Neue Activity anlegen und starten

Android - Neue Activity

Layouts

Lock Portrait or Landscape

fullscreen - requestwindowfeature

Handle Orientation

Android - Handle Orientation

Views

Vertical Seek Bar

Android - Vertical Seek Bar

Events

Android - OnClickListener

Graphic and Animation

Bitmap - ressource und input stream

Sprites

Sound

Unterstützte Formate

• http://developer.android.com/guide/appendix/media-formats.html

Links

• http://stackoverflow.com/questions/4855874/are-there-any-built-in-default-sounds-that-can-be-utilized-in-an-app
• http://alucard1990.hubpages.com/hub/How-to-Make-a-Simple-Media-Player-for-Android
• http://stackoverflow.com/questions/3747139/how-can-i-show-a-mediacontroller-while-playing-audio-in-android/5265629#5265629

Möglichkeiten zur Sound-Ausgabe

MediaPlayer

Android - Media Player

http://developer.android.com/reference/android/media/MediaPlayer.html

Generate Sound (Midi-Files + PCM Generation mit AudioTrack) Android - rttl Sound File

• http://www.speakingcode.com/2012/01/01/playing-with-android-audiotrack-to-generate-sounds/

System Sounds

Fortgeschrittene Techniken

• http://www.martinhoeller.net/2012/01/13/developing-a-musical-instrument-app-for-android/

• http://docs.gstreamer.com/display/GstSDK/Android+tutorials

• http://www.brokenteapotstudios.com/android-game-development-blog/2011/10/playing-a-wav-pcm-sample-with-audiotrack.html

Threads

• Java - Threads
• Android - Threads
• Java - Timer und TimerTask
• Android - Thread Priority

Files, Dateimanagment

Android - Dateimanagement

Bild erzeugen und speichern

http://stackoverflow.com/questions/10278919/android-writing-reading-picture-to-internal-storage?rq=1

Android - Bild erzeugen und speichern

Zugriff auf Ressourcen

• http://stackoverflow.com/questions/8340445/how-can-i-specify-the-resource-to-get-from-r-res-drawable-dynamically

Beispiel Speicherkarte:

File.DirRootExternal & "/Music", "titelx.mp3"

Ressourcen Pfad herausfinden

Ist das richtig ??? Eigentlich muß die Ressource ID in den Filenamen umgewandelt werden.

Using Resource Name

Syntax:

android.resource://[package]/[res type]/[res name]

Example : If icon.png image file is available in res/drawable folder you can get path like :

String PATH="android.resource://com.my.package/drawable/icon";

Using Resource Id

Syntax :

android.resource://[package]/[resource_id]

Example : If icon.png image file is available in res/drawable folder you can get path:

String PATH="android.resource://com.my.package/" + R.drawable.icon;

This were the examples to get the URI of any image file stored in drawable folder.

Similarly you can get URIs of res/raw folder also.

???

Gestures - Gesten

Android Development - Gesten

GPS, Geolocation und Maps

Android Location API