LifeCycle در اندروید

مثال

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
>

  
     <TextView
         android:id="@+id/textView1"
         android:layout_gravity="center_horizontal"
         android:textSize="23dp"
         android:layout_marginTop="150dp"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="This Is Fist Activity Activity"
         />
  
    <Button
        android:id="@+id/button1"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="20dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="      Second Activity     "
        android:onClick="startSecondActivity"/>

</LinearLayout>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
>

     <TextView
         android:id="@+id/textView1"
         android:layout_marginTop="150dp"
         android:layout_gravity="center_horizontal"
         android:textSize="23dp"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="This Is Second Activity" />

      </LinearLayout>

public class DemoFirstActivity extends Activity
{
    /** Called when the activity is first created. */


    @Override
    public void onCreate(Bundle savedInstanceState)
    {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main);
            Toast.makeText(this, "On Create Called In First Activity", Toast.LENGTH_LONG).show();
            Log.i("FirstActivity", "Inside onCreate");
           
    }
     
   
    @Override
    protected void onStart() {
        // TODO Auto-generated method stub
        super.onStart();
        Toast.makeText(this, "On Start Called In First Activity", Toast.LENGTH_LONG).show();
        Log.i("FirstActivity", "Inside onStart");
    }
   
   
    @Override
    protected void onResume()
    {
        // TODO Auto-generated method stub
        super.onResume();
       
        Toast.makeText(this, "On Resume Called In First Activity", Toast.LENGTH_LONG).show();
        Log.i("FirstActivity", "Inside onResume");
    }
   
   
   
 @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        super.onPause();
        Toast.makeText(this, "On Pause Called In First Activity", Toast.LENGTH_LONG).show();
        Log.i("FirstActivity", "Inside onPause");
    }


   @Override
    protected void onStop() {
        // TODO Auto-generated method stub
        super.onStop();
       
        Toast.makeText(this, "On Stop Called In First Activity", Toast.LENGTH_LONG).show();
        Log.i("FirstActivity", "Inside onStop");
    }


   @Override
    protected void onDestroy()
    {
        // TODO Auto-generated method stub
        super.onDestroy();
        Toast.makeText(this, "On Destroy Called In First Activity", Toast.LENGTH_LONG).show();
        Log.i("FirstActivity", "Inside onDestroy");
       
    }
   
    public void startSecondActivity(View V)
    {
        // create an new Intent and Start Second Activity
        Intent intent=new Intent(this,SecondActivity.class);
        startActivity(intent);
    }
}

public class SecondActivity extends Activity
{
    /** Called when the activity is first created. */


    @Override
    public void onCreate(Bundle savedInstanceState)
    {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.layout2);
            Toast.makeText(this, "On Create Called In Second Activity", Toast.LENGTH_LONG).show();
            Log.i("SecondActivity", "Inside onCreate");
           
    }
     
   
    @Override
    protected void onStart() {
        // TODO Auto-generated method stub
        super.onStart();
        Toast.makeText(this, "On Start Called In Second Activity", Toast.LENGTH_LONG).show();
        Log.i("SecondActivity", "Inside onStart");
    }
   
   
    @Override
    protected void onResume()
    {
        // TODO Auto-generated method stub
        super.onResume();
       
        Toast.makeText(this, "On Resume Called In Second Activity", Toast.LENGTH_LONG).show();
        Log.i("SecondActivity", "Inside onResume");
    }
   
   
   
 @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        super.onPause();
        Toast.makeText(this, "On Pause Called In Second Activity", Toast.LENGTH_LONG).show();
        Log.i("SecondActivity", "Inside onPause");
    }


   @Override
    protected void onStop() {
        // TODO Auto-generated method stub
        super.onStop();
       
        Toast.makeText(this, "On Stop Called In Second Activity", Toast.LENGTH_LONG).show();
        Log.i("SecondActivity", "Inside onStop");
    }


   @Override
    protected void onDestroy()
    {
        // TODO Auto-generated method stub
        super.onDestroy();
        Toast.makeText(this, "On Destroy Called In Second Activity", Toast.LENGTH_LONG).show();
        Log.i("SecondActivity", "Inside onDestroy");
       
    }
}

03-14 15:33:31.313: I/FirstActivity(22609): Inside onCreate
03-14 15:33:31.318: I/FirstActivity(22609): Inside onStart
03-14 15:33:31.323: I/FirstActivity(22609): Inside onResume
03-14 15:33:44.183: I/FirstActivity(22609): Inside onPause
03-14 15:33:44.313: I/SecondActivity(22609): Inside onCreate
03-14 15:33:44.318: I/SecondActivity(22609): Inside onStart
03-14 15:33:44.323: I/SecondActivity(22609): Inside onResume
03-14 15:33:44.513: I/FirstActivity(22609): Inside onStop
03-14 15:34:03.578: I/SecondActivity(22609): Inside onPause
03-14 15:34:03.603: I/FirstActivity(22609): Inside onStart
03-14 15:34:03.603: I/FirstActivity(22609): Inside onResume
03-14 15:34:03.813: I/SecondActivity(22609): Inside onStop
03-14 15:34:03.818: I/SecondActivity(22609): Inside onDestroy