Android Development - Snippets: Unterschied zwischen den Versionen

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]

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

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

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

System Sounds

Fortgeschrittene Techniken[Bearbeiten]

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[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]

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[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

@@ Zeile 1: / Zeile 1: @@
-== Neue Activity starten ==
+== Android Cheat Sheet ==
-Z.B. über Button Klick
+[[Android - Cheat Sheet]]
-Du brauchst:
+== Activities ==
-* Neue Activity
+=== Android - Neue Activity anlegen und starten ===
-**Evtl. neues Layout anlegen
+[[Android - Neue Activity]]
-**Neue Java Klasse für Activity anlegen
-** Neue Activity im Manifest eintragen
-* Button in der Haupt Activity
+== Layouts ==
-* onClick Event Handler
+Lock Portrait or Landscape
-* Intent als Verbindung
-* Ressourcen wie Strings etc.
+fullscreen - requestwindowfeature
-=== Neues Layout für die Activity ===
+=== Handle Orientation ===
-Layout Ordner > Rechtsklick > New > Android Layout File > Name in Lowercase(z.b. page_2)
+[[Android - Handle Orientation]]
-<pre>
-<?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:orientation="vertical" >
-    <TextView
+== Views ==
-        android:id="@+id/textView1"
+=== Vertical Seek Bar ===
-        android:layout_width="wrap_content"
+[[Android - Vertical Seek Bar]]
-        android:layout_height="wrap_content"
-        android:text="@string/page2_title"
-        android:textAppearance="?android:attr/textAppearanceLarge" />
-</LinearLayout>
+== Events ==
-</pre>
+[[Android - OnClickListener]]
-=== Neue Activity Klasse erzeugen ===
+== Graphic and Animation ==
-Package > Rechtsklick > New > Class > Name mit FirstLetterUppercase (z.B. Page2Activity)
+Bitmap - ressource und input stream
-* extends Activity
-* Activity importieren
-* mind. onCreate(bundle) -> am Besten über Rechtsklick > Source > Override
-* setcontentView(R.layout.id)
-'''page2Activity.class'''
+Sprites
-<pre>
-package com.example.buttonstartsactivity;
-import android.app.Activity;
+== Sound ==
-import android.os.Bundle;
+=== 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
-public class Page2Activity extends Activity{
+=== Möglichkeiten zur Sound-Ausgabe ===
-	@Override
+====SoundPool====
-	protected void onCreate(Bundle savedInstanceState) {
-		super.onCreate(savedInstanceState);
-		setContentView(R.layout.page2);
-	}
-}
-</pre>
-=== Manifest Eintrag ===
+====MediaPlayer====
-<pre>
+[[Android - Media Player]]
-// ...
-        <activity
-            android:name="com.example.buttonstartsactivity.Page2Activity"
-            android:label="@string/app_name"
-            android:exported="false">
-            <intent-filter>
-                <action android:name="android.intent.action.PAGE2" />
-                <category android:name="android.intent.category.DEFAULT" />
-            </intent-filter>
-        </activity>
-// ...
-</pre>
-=== Button in Hauptansicht ===
+http://developer.android.com/reference/android/media/MediaPlayer.html
-z.B.
-main_activtiy.xml
+Generate Sound (Midi-Files + PCM Generation mit AudioTrack)
-<pre>
+[[Android - rttl Sound File]]
-</pre>
+* 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]]
+=== Textdatei erzeugen, speichern, lesen ===
+=== 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]]