การจัดการอีเว้นต์ บน Android @see http://devsharing.com/2013/android/event-handling-on-android/

main.xml

<Button
    android:id="@+id/btnClick"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Click Me!" />

MainActivity.java

public class MainActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
 
        Button btnClick = (Button) findViewById(R.id.btnClick);
        btnClick.setOnClickListener(new View.OnClickListener() {
            public void onClick(View view) {
                Toast.makeText(getApplicationContext(), "Clicked!", Toast.LENGTH_LONG).show();
            }
        });
    }
}