Hello there!
I'm a newbie in Android programming, and was exploring the possibility
to switch between more than - one - layouts (i.e. more pages?).
So I've created a new XML layout page (called second.xml) and created
some things in there. At least I've created a button to switch back to
the first layout, but a NullPointerException fires up when the
application starts, and that only for the "back" button, while the
"next" button just works great.
Any suggestion?
Thanks :)
package com.elegos.test;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class ListViewTest extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
TextView myText = (TextView)findViewById(R.id.myTextView);
Button nextButton = (Button)findViewById(R.id.ButtonNext);
Button backButton = (Button)findViewById(R.id.ButtonBack);
nextButton.setOnClickListener(getCListener(R.layout.second));
try {backButton.setOnClickListener(getCListener
(R.layout.main));} catch(Exception e) {myText.append("\n"+e.toString
());}
}
final private OnClickListener getCListener(final int layout) {
return new Button.OnClickListener() {
public void onClick(View v) {
setContentView(layout);
}
};
}
}
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google
Groups "Android Beginners" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/android-beginners?hl=en
-~----------~----~----~----~------~----~------~--~---
