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 +
== Android Cheat Sheet ==
 +
[[Android - Cheat Sheet]]
 +
 
== Activities ==
 
== Activities ==
 
=== Android - Neue Activity anlegen und starten ===
 
=== Android - Neue Activity anlegen und starten ===
Zeile 5: Zeile 8:
 
== Layouts ==
 
== Layouts ==
 
Lock Portrait or Landscape
 
Lock Portrait or Landscape
 +
 
fullscreen - requestwindowfeature
 
fullscreen - requestwindowfeature
 +
 +
=== Handle Orientation ===
 +
[[Android - Handle Orientation]]
  
 
== Views ==
 
== Views ==
 
=== Vertical Seek Bar ===
 
=== Vertical Seek Bar ===
−
http://stackoverflow.com/questions/4892179/how-can-i-get-a-working-vertical-seekbar-in-android (2013-02)
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[[Android - Vertical Seek Bar]]
 +
 
 +
== Events ==
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[[Android - OnClickListener]]
 +
 
 +
== Graphic and Animation ==
 +
Bitmap - ressource und input stream
 +
 
  
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Siehe auch die Kommentare wg. Verbesserungen und Problembehebungen
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Sprites
  
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<pre>
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== Sound ==
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package android.widget;
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=== 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
  
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import android.content.Context;
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=== Möglichkeiten zur Sound-Ausgabe ===
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import android.graphics.Canvas;
 
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import android.util.AttributeSet;
 
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import android.view.MotionEvent;
 
  
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public class VerticalSeekBar extends SeekBar {
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====SoundPool====
  
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    public VerticalSeekBar(Context context) {
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====MediaPlayer====
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        super(context);
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[[Android - Media Player]]
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    }
 
  
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    public VerticalSeekBar(Context context, AttributeSet attrs, int defStyle) {
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http://developer.android.com/reference/android/media/MediaPlayer.html
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        super(context, attrs, defStyle);
 
−
    }
 
  
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    public VerticalSeekBar(Context context, AttributeSet attrs) {
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Generate Sound (Midi-Files + PCM Generation mit AudioTrack)
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        super(context, attrs);
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[[Android - rttl Sound File]]
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    }
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* http://www.speakingcode.com/2012/01/01/playing-with-android-audiotrack-to-generate-sounds/
  
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    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
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System Sounds
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        super.onSizeChanged(h, w, oldh, oldw);
 
−
    }
 
  
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    @Override
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=== Fortgeschrittene Techniken ===
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    protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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* http://www.martinhoeller.net/2012/01/13/developing-a-musical-instrument-app-for-android/
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        super.onMeasure(heightMeasureSpec, widthMeasureSpec);
 
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        setMeasuredDimension(getMeasuredHeight(), getMeasuredWidth());
 
−
    }
 
  
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    protected void onDraw(Canvas c) {
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* http://docs.gstreamer.com/display/GstSDK/Android+tutorials
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        c.rotate(-90);
 
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        c.translate(-getHeight(), 0);
 
  
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        super.onDraw(c);
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* http://www.brokenteapotstudios.com/android-game-development-blog/2011/10/playing-a-wav-pcm-sample-with-audiotrack.html
−
    }
 
  
−
    @Override
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== Threads ==
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    public boolean onTouchEvent(MotionEvent event) {
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* [[Java - Threads]]
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        if (!isEnabled()) {
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* [[Android - Threads]]
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            return false;
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* [[Java - Timer und TimerTask]]
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        }
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* [[Android - Thread Priority]]
  
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        switch (event.getAction()) {
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== Files, Dateimanagment ==
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            case MotionEvent.ACTION_DOWN:
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[[Android - Dateimanagement]]
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            case MotionEvent.ACTION_MOVE:
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=== Textdatei erzeugen, speichern, lesen ===
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            case MotionEvent.ACTION_UP:
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=== Bild erzeugen und speichern ===
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                setProgress(getMax() - (int) (getMax() * event.getY() / getHeight()));
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http://stackoverflow.com/questions/10278919/android-writing-reading-picture-to-internal-storage?rq=1
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                onSizeChanged(getWidth(), getHeight(), 0, 0);
 
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                break;
 
  
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            case MotionEvent.ACTION_CANCEL:
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[[Android - Bild erzeugen und speichern]]
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                break;
 
−
        }
 
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        return true;
 
−
    }
 
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}
 
−
</pre>
 
  
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Implementation
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=== Zugriff auf Ressourcen ===
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To implement it, create a new class in your project, choosing the right package: android.widget
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* 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"
  
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xml Layout
 
−
<pre>
 
  
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<android.widget.VerticalSeekBar
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==== Ressourcen Pfad herausfinden ====
−
  android:id="@+id/seekBar1"
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Ist das richtig ???
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  android:layout_width="wrap_content"
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Eigentlich muß die Ressource ID in den Filenamen umgewandelt werden.
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  android:layout_height="200dp"
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−
  />
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Using Resource Name
−
</pre>
+
 
 +
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.
  
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== Events ==
 
−
[[Android - OnClickListener]]
 
  
−
== Graphic and Animation ==
+
???
−
Bitmap - ressource und input stream
 
  
 +
== Gestures - Gesten ==
 +
[[Android Development - Gesten]]
  
−
Sprites
+
== GPS, Geolocation und Maps ==
 +
[[Android Location API]]

Aktuelle Version vom 10. Oktober 2013, 14:50 Uhr

Android Cheat Sheet[Bearbeiten]

Android - Cheat Sheet

Activities[Bearbeiten]

Android - Neue Activity anlegen und starten[Bearbeiten]

Android - Neue Activity

Layouts[Bearbeiten]

Lock Portrait or Landscape

fullscreen - requestwindowfeature

Handle Orientation[Bearbeiten]

Android - Handle Orientation

Views[Bearbeiten]

Vertical Seek Bar[Bearbeiten]

Android - Vertical Seek Bar

Events[Bearbeiten]

Android - OnClickListener

Graphic and Animation[Bearbeiten]

Bitmap - ressource und input stream


Sprites

Sound[Bearbeiten]

Unterstützte Formate[Bearbeiten]

Links[Bearbeiten]

Möglichkeiten zur Sound-Ausgabe[Bearbeiten]

SoundPool[Bearbeiten]

MediaPlayer[Bearbeiten]

Android - Media Player

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

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

System Sounds

Fortgeschrittene Techniken[Bearbeiten]

Threads[Bearbeiten]

Files, Dateimanagment[Bearbeiten]

Android - Dateimanagement

Textdatei erzeugen, speichern, lesen[Bearbeiten]

Bild erzeugen und speichern[Bearbeiten]

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

Android - Bild erzeugen und speichern

Zugriff auf Ressourcen[Bearbeiten]

Beispiel Speicherkarte: 

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


Ressourcen Pfad herausfinden[Bearbeiten]

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[Bearbeiten]

Android Development - Gesten

GPS, Geolocation und Maps[Bearbeiten]

Android Location API

Abgerufen von „https://wiki.stephanschlegel.de/index.php?title=Android_Development_-_Snippets&oldid=20025“