Android Toast Message

What is Toast Message?

  • Toast message is a simple feedback about an operation in a small group. These messages only fill the amount of space required for the message.
  • Toast messages automatically disappears after a timeout. It can be used to display information for the short period of time.

    • For example: In Gmail app, when a mail is saved into draft box, it shows a toast message “Saved to Draft” this message is called a toast message.

  • The android.widget.Toast class is the subclass of Java.lang.Object class.
  • The android.widget.Toast class is used to show notification or message for a particular interval of time and does not block the user interaction.
  • The makeText() method is used to create an object of android.widget.Toast class.

    • The makeText() method takes three parameters:
    1. Application Context
    2. Text Message
    3. Duration for the toast

  • The show() method is used to display the toast notification.

    • Syntax:
    Toast toast = Toast.makeText(getApplicationContext, “Toast message”, Toast.LENGTH_SHORT);
    toast.show();

  • Android toast message is a solution for android developer to notify users about an operation without expecting any user input.
  • It provides a small popup which displays a message for a small period and fades out automatically after timeout.
  • By default, the toast notification appears near the bottom of the screen, but developer can change the position by using setGravity() method.
The setGravity() method takes three arguments:
I. Gravity constant
II. x-position offset
III. y-position offset

For Example:
Toast.setGravity(Gravity.TOP | Gravity.LEFT, 0, 0);

Example : Creating Toast Message

The following example demonstrates how to create a toast message in a device.

File name: content_main.xml

<?xml version = "1.0" encoding="utf-8"?>
<RelativeLayoutxmlns:android = "http://schemas.android.com/apk/res/android"
xmlns:app = "http://schemas.android.com/apk/res-auto"
xmlns:tools = "http://schemas.android.com/tools"
android:layout_width = "match_parent"
android:layout_height = "match_parent"
android:paddingBottom = "@dimen/activity_vertical_margin"
android:paddingLeft = "@dimen/activity_horizontal_margin"
android:paddingRight = "@dimen/activity_horizontal_margin"
android:paddingTop = "@dimen/activity_vertical_margin"
app:layout_behavior = "@string/appbar_scrolling_view_behavior"
tools:context = "com.example.itwin.toastdemo.MainActivity"
tools:showIn = "@layout/activity_main">

<Button
android:layout_width = "wrap_content"
android:layout_height = "wrap_content"
android:text = "Show Message"
android:textSize = "30dp"
android:id = "@+id/btnShow"
android:layout_marginTop = "72dp"
android:onClick = "showToast" // It will call showTost() method
android:layout_alignParentTop = "true"
android:layout_centerHorizontal = "true" />
</RelativeLayout>

File name: MainActivity.java

public class MainActivity extends AppCompatActivity
{
     Button btn;
     @Override
     protected void onCreate(Bundle savedInstanceState)
     {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
          btn = (Button)findViewById(R.id.btnShow);
     }
     public void showToast(View v)
     {
          Toast toast = Toast.makeText(getApplicationContext(), "Welcome to TutorialRide", Toast.LENGTH_SHORT);
          toast.show();
     }
}


Output:

toast message output

In the above output, on clicking the “SHOW MESSAGE” button, you can see the toast message “Welcome to TutorialRide”.
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