Apps Can someone explain what is the error i'm encountering for the "loop.." statement??

[imso]

Sorry i'm quite new to java programming especially to to start on android apps.. thanks for your patients..

package net.learn2develop.HelloWorld;
 

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

public class HelloWorldActivity extends Activity
{
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Log.d("Hello World App","onCreate"); 

}

@Override
public void onStart()
{
Log.d("Hello World App", "onStart");
super.onStart();
}

@Override
public void onResume()
{
Log.d("Hello World App", "onResume");
super.onResume();
}

@Override
public void onPause()
{
Log.d("Hello World App", "onPause");
super.onPause();
}

@Override
public void onStop()
{
Log.d("Hello World App", "onStop");
super.onStop();
}

@Override
public void onDestroy()
{
loop.cancel(true); // Why is the loop... statement keep giving me an error, but the textbook clearly state this statement what when wrong?? 
Log.d("Hello World App", "onDestroy");
super.onDestroy();
}

@Override
public void onRestart()
{
Log.d("Hello World App", "onRestart");
super.onRestart();
}
 

}

 

[pietjuhhh1990]

Loop gives you error's because loop has'nt been activated yet.
You ar trying to stop something you havn't started yet

 

[miXer]

loop has never been created. In Java you must create and instantiate variables before you can use them.