Android - Cheat Sheet

Hier gibt es nur Code Schnipsel zum Kopieren ohne Erklärung

Neue Activity

MyNameActivity.java // Class
activity_my_name.xml // Layout File
AndroidManifest.xml
strings.xml

Activity Class

package de.webmynet.android.myappname;

import android.app.Activity;
import android.os.Bundle;

public class MyNameActivity extends Activity{

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_my_name);
	}
}

Buttons verdrahten

import android.widget.Button;
public class MyNameActivity extends Activity implements OnClickListener {
	Button b1,b2;
...
		b1 = (Button)findViewById(R.id.b1); 
		b2 = (Button)findViewById(R.id.b2); 
		b1.setOnClickListener(this); 
		b2.setOnClickListener(this);
...
	@Override
	public void onClick(View v) {
		int id = v.getId();
		Intent i = null;
		switch (id){
		case R.id.b1:
			i = new Intent(this,OtherNameActivity.class);
			break;
		case R.id.b2:
			i = new Intent("de.webmynet.appname.OTHERNAME");//Variant with Manifest Activity Name
			break;

		default:
			break;
		}
		startActivity(i);
	}

MapView Activity

https://developers.google.com/maps/documentation/android/?hl=de
http://ddewaele.github.io/GoogleMapsV2WithActionBarSherlock/part1

Voraussetzungen

• Google Play Services SDK muß installiert sein (SDK Manager)
• In Eclipse muß folgendes Projekt importiert sein: myadtfolder/sdk/extras/google/google_play_services/libproject/google-play-services_lib damit die Packages zur Verfügung stehen.

Projekt und API Key

• Project Properties > Android > Project Build Targets > Google APIs
• Fingerprint holen
• Registrieren auf der google developer console und API Schlüssel holen

Manifest Datei

vor application tag

<uses-library android:name="com.google.android.maps" />

Permissions (die erste nur bei Einsatz der ActionSherlock Toolbar)

<!-- Google Maps related permissions -->
<!-- <permission android:name="com.ecs.google.maps.v2.actionbarsherlock.permission.MAPS_RECEIVE" android:protectionLevel="signature"/> -->
<uses-permission android:name="com.example.mapdemo.permission.MAPS_RECEIVE"/>
 
<!-- Network connectivity permissions -->
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.INTERNET"/>
 
<!-- Access Google based webservices -->
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
 
<!-- External storage for caching. -->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

<!-- My Location -->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

<!-- Maps API needs OpenGL ES 2.0. -->
<uses-feature android:glEsVersion="0x00020000" android:required="true"/>

Im Application Tag wird der API-Key hinterlegt:

<meta-data android:name="com.google.android.maps.v2.API_KEY" android:value="INSERT_YOUR_API_KEY_HERE"/>

Activity Klasse

extends MapActivity