Toasts

http://developer.android.com/guide/topics/ui/notifiers/toasts.html

A toast is a view that displays a message to a user. It fills the space required for the message and the current activity remains visible and interactive.

import android.os.Bundle;

import android.app.Activity;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;

public class MainActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

// Register button

final Button button = (Button) findViewById(R.id.button);

// Set on click listener

button.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {

// Perform action on click

Toast.makeText(MainActivity.this, "toast message",

Toast.LENGTH_LONG).show();

}

});

}

}

Note:

The Toast class provides two public static makeText methods with which you can construct your toast object and message.

If you use a named toast, instead of an anonymous toast, you can set various attributes in code.

Example:

Toast toast = new Toast(getApplicationContext());

toast.setGravity(gravity, xOffset, yOffset);

http://developer.android.com/reference/android/widget/Toast.html