Load Button from layout xml file and add action listener
package app.test; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.Button; public class Test extends Activity { public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); //Retrieve the button object Button myButton = (Button)findViewById(R.id.myButton); //Attach the listener myButton.setOnClickListener(clickListener); } //Listener object to handle the click events View.OnClickListener clickListener = new View.OnClickListener() { public void onClick(View v) { } }; } //main.xml <?xml version="1.0" encoding="utf-8"?> <Button xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/myButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="My Button" />