Difference between revisions of "Android Controller"

Revision as of 20:53, 4 June 2011 (view source) Jeanne (Talk | contribs) (→‎Android Basics:) ← Older edit		Revision as of 20:55, 4 June 2011 (view source) Jeanne (Talk | contribs) (→‎Android Basics:) Newer edit →
Line 73:		Line 73:
	</pre>		</pre>
		+	*Sockets
		+	<pre>
		+	public void sendSocket(String sendStr, String textStr)
		+	{
		+	try {
		+	//Socket s = new Socket("137.110.119.121",11011);  // TourCAVE
		+	Socket s = new Socket("137.110.118.26",3412); // sessions
		+	//Socket s = new Socket("137.110.115.194",11011);  // HP laptop
		+
		+	//outgoing stream redirect to socket
		+	OutputStream out = s.getOutputStream();
		+
		+
		+	PrintWriter output = new PrintWriter(out);
		+	output.println(sendStr);
		+	output.close();  // required to actually send the text
		+
		+	Context context = getApplicationContext();
		+	Toast.makeText(context, textStr, Toast.LENGTH_SHORT).show();
		+
		+	//Close connection
		+	s.close();
		+	} catch (UnknownHostException e) {
		+	Context context = getApplicationContext();
		+	Toast.makeText(context, "UnknownHostException!",
		+	Toast.LENGTH_SHORT).show();
		+	e.printStackTrace();
		+	} catch (IOException e) {
		+	Context context = getApplicationContext();
		+	Toast.makeText(context, "IOException! "+e,
		+	Toast.LENGTH_SHORT).show();
		+	e.printStackTrace();
		+	}
		+	}
		+	</pre>
	* Camera		* Camera

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Revision as of 20:55, 4 June 2011

Contents 1 Android Controller 2 Objective 2.1 Android Basics: 2.2 Hardware + Emulator 2.3 Network 2.4 ARToolkit 2.5 Android 2.6 OpenCover 2.7 Tips 2.8 Other possibilities

Android Controller

Jeanne Wang

Objective

Create an intuitive and novel approach to a tablet based multi-touch and sensor-enabled controller for a real-time 3D visualization on a 2D platform. Using camera pose information relative to a 3D model displayed on a screen, we can display virtual camera shots in the 3D model space on the tablet.

---

Android Basics:

• Sandboxed in a linux environment, each application is actually a user

• Model View Controller setup
  • Model - Content providers
  • View - XML
  • Controller - Activity, or Service

• UI Components
  • Buttons

Button button = (Button)findViewById(R.id.button1);
button.setOnClickListener(buttonOnClick);

• • Sliders

SeekBar seekbar=(SeekBar)findViewById(R.id.seekBar1);
seekbar.setOnSeekBarChangeListener(sbar);

• • TextView

TextView seekbartxt=(TextView)findViewById(R.id.seekBarText);
			CharSequence t="slider progress:"+progress;
			seekbartxt.setText(t);

• • Toasts (timed popups)

                    int duration = Toast.LENGTH_SHORT;
                    View v;
		    CharSequence text = "button "+v.getId()+" pressed";
		    Toast t=Toast.makeText(v.getContext(),text, duration);
		    t.show();

• Listeners
  • OnClickListener

private OnClickListener showCamera = new OnClickListener() {
	    public void onClick(View v) {
		    	//do stuff here
            }

• • OnSeekBarChangeListener

private SeekBar.OnSeekBarChangeListener sbar = new SeekBar.OnSeekBarChangeListener()
	{
		
		public void onStopTrackingTouch(SeekBar seekBar) {			
		}
		
		public void onStartTrackingTouch(SeekBar seekBar) {
		}
		
		public void onProgressChanged(SeekBar seekBar, int progress,
				boolean fromUser) {
		}
	};

• Start New Intent

Intent myIntent = new Intent(v.getContext(), TouchScreen.class);
		    startActivityForResult(myIntent, 0);

• Sockets

public void sendSocket(String sendStr, String textStr)
	   {
	       try {
	           //Socket s = new Socket("137.110.119.121",11011);   // TourCAVE
	    	   Socket s = new Socket("137.110.118.26",3412); // sessions
	    	   //Socket s = new Socket("137.110.115.194",11011);   // HP laptop

	           //outgoing stream redirect to socket
	           OutputStream out = s.getOutputStream();
	           

	           PrintWriter output = new PrintWriter(out);
	           output.println(sendStr);
	           output.close();  // required to actually send the text
	           
	           Context context = getApplicationContext();
	           Toast.makeText(context, textStr, Toast.LENGTH_SHORT).show();

	           //Close connection
	           s.close();
	       } catch (UnknownHostException e) {
	    	   Context context = getApplicationContext();
	           Toast.makeText(context, "UnknownHostException!",
	        		   Toast.LENGTH_SHORT).show();
	           e.printStackTrace();
	       } catch (IOException e) {
	    	   Context context = getApplicationContext();
	           Toast.makeText(context, "IOException! "+e,
	        		   Toast.LENGTH_SHORT).show();
	           e.printStackTrace();
	       }
	   }

• Camera
  • Default Camera

                private static int CAMERA_PIC_REQUEST = 10232;
	    	Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
	    	intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
	    	startActivityForResult(intent, CAMERA_PIC_REQUEST);

	protected void onActivityResult(int requestCode, int resultCode, Intent data) {  
	    if (requestCode == CAMERA_PIC_REQUEST) {  
	    	android.graphics.Bitmap thumbnail = (android.graphics.Bitmap) data.getExtras().get("data");    
	    	ImageView image = (ImageView) findViewById(R.id.photoResultView);  
	    	image.setImageBitmap(thumbnail); 
	    }  
	} 

Hardware + Emulator

• using-adp1-without-sim-card
• register g1
• update g1 firmware

Network

• server

• client

• socket issues

ARToolkit

• detect marker
• pose

Android

OpenCover

• display marker
• display dataset

Tips

• Tip: An easy way to add import packages to your project is to press Ctrl-Shift-O (Cmd-Shift-O, on Mac). This is an Eclipse shortcut that identifies missing packages based on your code and adds them for you.
• To get cpuinfo on a particular machine look in: /proc/cpuinfo
• To get ipaddress on a particular machine call /sbin/ifconfig

Other possibilities

• Corona Sdk [[1]]
• HTML5 DeviceMotionEvent [[2]]
• PhoneGap [[3]]