#3 How to initialize a button in Android - way 3 (Simplest way)

ButtonActivity3.java

package com.blogspot.pcnlap.elegant;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity {

	Button button;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		findViewById(R.id.button_id_from_xml).setOnClickListener(
				new OnClickListener() {

					@Override
					public void onClick(View v) {
						Toast.makeText(MainActivity.this, "I'm clicked",
								Toast.LENGTH_SHORT).show();
					}
				});
	}
}