Page Comparison

String site = ...;    // will delivered by the measurement provider
Spring appName = ...; // will delivered by the measurement provider
SpringStreams sensor = new SpringStreamsSpringStreams.getInstance(site, appName, getApplicationContext());

The site name and application name is specified by the operator of the measurement system.

package de.spring.mobile;

/**
 * This adapter must be used to support some players by the library.
 * 
 * @see Meta
 * @see SpringStreams
 * @see SpringStreams#track(StreamAdapter, java.util.Map)
 * 
 * @author <a href="mailto:support@spring.de">spring GmbH &amp; Co.KG</a>
 */
public interface StreamAdapter {

	public interface Meta {
		public String getPlayerName();
		public String getPlayerVersion();
		public int getScreenWidth();
		public int getScreenHeight();
	}
	
	public Meta getMeta();
	
	public int getPosition();
	
	public int getDuration();
	
	public int getWidth();
	
	public int getHeight();	
}

In the library an adapter for class android.widget.VideoView

The source code for this implementation can be found in Appendix A and in the library.

A stream is measured as long as the Activity is in the foreground. When the Activity goes into the background, the current status is transmitted to the measurement system and the measurement stops. If the stream should be measured again, when the application will come back to the foreground, the method track must be called again.

If the stream should be measured again, when the Activity comes to the foreground or after the method stop has been called, the method track must be called again.

...
sensor.unload();

public class VideoPlayer extends SpringStreamsActivity {

	VideoView videoView;

	/**
	 * 
	 */
	public VideoPlayer() {
		super("test", "Streaming Test App");
	}
	
	
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		
		videoView = ...; 
	}

	@Override
	protected void onStart() {
		Map<String, Object> atts = new HashMap<String, Object>();
		atts.put("stream", "android/teststream");
		super.track(new VideoViewAdapter(this.videoView), atts);
		super.onStart();
	}
}"stream", "android/teststream");
		super.track(new VideoViewAdapter(this.videoView), atts);
		super.onStart();
	}
}

package de.spring.mobile;

import java.util.Map;
import android.app.Activity;
import android.os.Bundle;

/**
 * 
 * @author  <a href="mailto:support@spring.de">spring GmbH &amp; Co.KG</a>
 */
public abstract class SpringStreamsActivity extends Activity {
	private static SpringStreams sensor;
	private static int instances = 0;
	private Stream stream;
	
	
	public SpringStreamsActivity(String site, String appName) {
		this(site, appName, 10);
	}
	
	public SpringStreamsActivity(String site, String appName, int timeout) {
		if(site == null) throw new NullPointerException("parameter site may not be null");
		if(appName == null) throw new NullPointerException("parameter appName may not be null");
		
		if(sensor == null) {
			sensor = new SpringStreams.getInstance(site, appName, getApplicationContext());
			sensor.setTimeout(timeout);
		}
	}
	public Stream getStream() {
		return stream;
	}
	public void setSensorDebug(boolean debug) {
		sensor.setDebug(debug);
	}
	
	public boolean isSensorDebug() {
		return sensor.isDebug();
	}
	
	public void setTracking(boolean tracking) {
		sensor.setTracking(tracking);
	}
	
	public boolean isTracking() {
		return sensor.isTracking();
	}	
	
	public void track(StreamAdapter adapter, Map<String, Object> atts) {
		if(this.stream != null) {
			stream.stop();
			stream = null;
		}
		stream = sensor.track(adapter, atts);
	}
	/**
	 * @see android.app.Activity#onCreate(android.os.Bundle)
	 */
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		instances++;
		super.onCreate(savedInstanceState);
	}
	
	
	/**
	 * @see android.app.Activity#onStop()
	 */
	@Override
	protected void onStop() {
		if(stream != null) {
			stream.stop();
			stream = null;
		}
		super.onStop();
	}
	
	/**
	 * @see android.app.Activity#onDestroy()
	 */
	@Override
	protected void onDestroy() {
		instances--;
		if(instances <= 0) {
			sensor.unload();
			sensor = null;
			stream = null;
		}
		super.onDestroy();
	}
}