Exercise : 10
Create an application that will have spinner with list of animation names. On selecting animation name , that animation should affect on the images displayed below.
Screen Shot:

XML :
main.xml :

~> in this problem we make “anim” folder to res.  Directory and create an xml file like following:

alpha.xml :

rotate.xml :

scale.xml :

spin.xml :

translate.xml :

JAVA :
TenActivity.java 

package kmn.Ten;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ImageView;
import android.widget.Spinner;

public class TenActivity extends Activity implements OnItemSelectedListener
{
    /** @author Y@@D */
    @Override
    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Spinner s = (Spinner)findViewById(R.id.spinner1);
        s.setOnItemSelectedListener(this);
    }

	public void onItemSelected(AdapterView arg0, View arg1, int arg2,
			long arg3)
	{
		ImageView i = (ImageView)findViewById(R.id.imageView1);
		if(arg3==1)
		{
			Animation a = AnimationUtils.loadAnimation(this, R.anim.alpha);
			i.startAnimation(a);
		}
		if(arg3==2)
		{
			Animation a = AnimationUtils.loadAnimation(this, R.anim.rotate);
			i.startAnimation(a);
		}
		if(arg3==3)
		{
			Animation a = AnimationUtils.loadAnimation(this, R.anim.scale);
			i.startAnimation(a);
		}
		if(arg3==4)
		{
			Animation a = AnimationUtils.loadAnimation(this, R.anim.spin);
			i.startAnimation(a);
		}
		if(arg3==5)
		{
			Animation a = AnimationUtils.loadAnimation(this, R.anim.translate);
			i.startAnimation(a);
		}
	}

	public void onNothingSelected(AdapterView arg0) 
	{
	
	}
}

Exercise : 9
Create a background application that will open activity on specific time.

Screen Shot:

XML :
main.xml :

JAVA :

MyService.java

package kmn.Nine;

import kmn.servicedemo.R;
import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.IBinder;
import android.util.Log;
import android.widget.Toast;

public class MyService extends Service
{
	/** @author Y@@D */
	private static final String TAG = "MyService";
	MediaPlayer player;

	public IBinder onBind(Intent intent) 
	{
		return null;
	}
	
	public void onCreate()
	{
		Toast.makeText(this, "My Service Created", Toast.LENGTH_LONG).show();
		Log.d(TAG, "onCreate");
		
		player = MediaPlayer.create(this, R.raw.braincandy);
		player.setLooping(false); // Set looping
	}

	public void onDestroy() 
	{
		Toast.makeText(this, "My Service Stopped", Toast.LENGTH_LONG).show();
		Log.d(TAG, "onDestroy");
		player.stop();
	}
	
	public void onStart(Intent intent, int startid) 
	{
		Toast.makeText(this, "My Service Started", Toast.LENGTH_LONG).show();
		Log.d(TAG, "onStart");
		player.start();
	}
}

Nine.java :

package kmn.Nine;

import kmn.servicedemo.R;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class Nine extends Activity implements OnClickListener
{
    /** @author Y@@D */
    private static final String TAG = "ServicesDemo";
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Button start = (Button)findViewById(R.id.button1);
        Button stop = (Button)findViewById(R.id.button2);
        start.setOnClickListener(this);
        stop.setOnClickListener(this);
    }

	public void onClick(View v)
	{
		if(v.getId()==R.id.button1)
		{
			Log.d(TAG, "onClick: starting srvice");
			startService(new Intent(this, MyService.class));
			//break;
		}
		if(v.getId()==R.id.button2)
		{
			Log.d(TAG, "onClick: stopping srvice");
			stopService(new Intent(this, MyService.class));
			//break;
		}
	}
}

Exercise : 8
Create an application that will display toast(Message) on specific interval of time.
Screen Shot:

XML :
main.xml :

JAVA : Chronometer.java :

package kmn.Chronometer;

import android.app.Activity;
import android.os.Bundle;
import android.widget.Chronometer;
import android.widget.Chronometer.OnChronometerTickListener;
import android.widget.EditText;
import android.widget.Toast;

public class ChronometerActivity extends Activity 
{
    /** @author Y@@D */
    int i=0;
    int Duration=10;
    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        Chronometer chn = (Chronometer)findViewById(R.id.chronometer1);
        chn.start();
        chn.setOnChronometerTickListener(new OnChronometerTickListener() 
        {	
			public void onChronometerTick(Chronometer arg0) 
			{
				EditText txt = (EditText)findViewById(R.id.editText1);
				txt.setText("Message Will Be Display After ["+(Duration-(i+1))+"] Seconds");
				i++;
				if(i>=Duration)
				{
					Toast.makeText(ChronometerActivity.this, "Message"+(i/10), 10000).show();
					Duration+=10;
				}
			}
		});
    } 
}

Exercise : 7

Understand Menu option.

a. Create an application that will change color of the screen, based on selected options from the menu.
Screen Shot:

XML :
main.xml :

JAVA :
SeventhActivity.java :

package kmn.Seventh;

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.RelativeLayout;

public class SeventhActivity extends Activity 
{
    /** @author Y@@D */
    @Override
    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }
    public boolean onCreateOptionsMenu(Menu menu) 
    {
     super.onCreateOptionsMenu(menu);
     CreateMenu(menu);
     return true;
    }
    public boolean onOptionsItemSelected(MenuItem item)
    {
     return MenuChoice(item);
    }
    private void CreateMenu(Menu menu)
    {
     MenuItem mnu1 = menu.add(0, 0, 0, "Red");
     {
      mnu1.setAlphabeticShortcut('r');
      mnu1.setIcon(R.drawable.icon);
     }
     MenuItem mnu2 = menu.add(0, 1, 0, "Green");
     {
      mnu2.setAlphabeticShortcut('g');
      mnu2.setIcon(R.drawable.icon);
     }
     MenuItem mnu3 = menu.add(0, 2, 0, "White");
     {
         mnu3.setAlphabeticShortcut('w');
         mnu3.setIcon(R.drawable.icon);
        }
    }
    private boolean MenuChoice(MenuItem item)
    {
     RelativeLayout l= (RelativeLayout) findViewById(R.id.relativeLayout1);
     
     switch (item.getItemId())
     {
      case 0:
       l.setBackgroundColor(Color.RED);
       return true;
      case 1:
       l.setBackgroundColor(Color.GREEN);
       return true;
      case 2:
       l.setBackgroundColor(Color.WHITE);
       return true;
     } 
  return false;
    }
}