ActivityMain.java

package toasttutorial.tktutorials.com;

import android.app.Activity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {
	
	public Button button;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		button = (Button) findViewById(R.id.button1);
		
		button.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				LayoutInflater inflater = getLayoutInflater();
				View layout = inflater.inflate(R.layout.toast_layout,
				                               (ViewGroup) findViewById(R.id.toast_layout_root));

				TextView text = (TextView) layout.findViewById(R.id.text);
				text.setText("Hello!");

				Toast toast = new Toast(getApplicationContext());
				toast.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
				toast.setDuration(Toast.LENGTH_LONG);
				toast.setView(layout);
				toast.show();			
			}
		});
	}	
}