[android-developers] Getting a second page to do anything

Hi,
This is I'm sure a very simple thing to do and I am just missing
something but I am just starting out. I have the main view, which has
a button. The button brings up a second view that is supposed to show
some toast message (or, in fact do anything). I can get everything to
work on the first view, but nothing at all to work on the second.
first view (main.xml for the layout)
public class actvSecondPage extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

final Button btnToast = (Button) findViewById(R.id.btnToast);
btnToast.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Toast.makeText(actvSecondPage.this, "this is some toast",
Toast.LENGTH_LONG).show();
}
});

final Button btnSecondPage = (Button)
findViewById(R.id.btnSecondPage);
btnSecondPage.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
setContentView(R.layout.second);
}
});
}
}

Second view (second.xml for the layout)
public class actvSecond extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.second);

Toast.makeText(actvSecond.this, "this is some toast on the actual
second page.", Toast.LENGTH_LONG).show();
};
}
the android.manifest.xml (in case i'm missing something there)
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.SecondPage"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="3" />

<application android:icon="@drawable/icon" android:label="@string/
app_name">
<activity android:name=".actvSecondPage"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category
android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

</application>
</manifest>

Can anyone help as to why what works in the first class does not in
the second? Or, rather, that nothing at all works in the second
class? Any help would be appreciated, thanks.
Erik

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