Toast message in Android

Toast is a transient message that appears and disappears without any interaction from the user and with no notification to the program that it disappeared. The Toast can display a simple text message or a complex view.

Displaying simple text: To display a simple toast that displays a text message we use the following code:

1	Toast toast=Toast.makeText(this, "This is toast message", 2000);

2	toast.setGravity(Gravity.TOP, -30, 50);

3	toast.show();

we create the toast using the static Toast.makeText(Context con,String message, int duration) method to create a toast in the current context to display a text message for a duration specified in milli seconds or we can use the constant values Toast.LENGTH_SHORT to display for a short duration or Toast.LENGTH_LONG for longer duration. The toast by default appears in the center of the screen, you can change the default position by specifying the Gravity and the X and Y offsets. finally we call the Show() method to display the toast.

Displaying complex views: Toasts can also display complex views. this is done like this:

First: create a layout xml file in res/layout directory. the file must be named toast_layout.xml.

01	<?xml version="1.0" encoding="utf-8"?>

02	<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

03	android:orientation="vertical"

04	android:layout_width="fill_parent"

05	android:layout_height="fill_parent"

06	android:id="@+id/toastView"

07

>

08

<TextView

09	android:layout_width="fill_parent"

10	android:layout_height="wrap_content"

11	android:text="Hello toast"

12	android:textColor="#000"

13

/>

14

<TextView

15	android:layout_width="fill_parent"

16	android:layout_height="wrap_content"

17	android:id="@+id/txtDate"

18	android:textColor="#000"

19

/>

20

21

22	</LinearLayout>

then from the code

1	Toast toast=new Toast(this);

2	LayoutInflater inflater=this.getLayoutInflater();

3	View toastView=inflater.inflate(R.layout.toast_layout, (ViewGroup)findViewById(R.id.toastView));

4	TextView txtDate=(TextView)toastView.findViewById(R.id.txtDate);

5	txtDate.setText("toast appeared at "+Calendar.getInstance().getTime().toLocaleString());

6	toast.setGravity(Gravity.CENTER, 0, 0);

7	toast.setView(toastView);

8	toast.show();

the toast will be like this:

Notes:

• In the toast_layout.xml width, if you put any buttons or any control that has a callback, it would appear disabled and the user cannot interact with it.
• The toast can be created in two ways: by calling Toast.makeText method or by specifying a view via setView method. when you want to display a simple text use the first one otherwise use the second. if you try to interchange or combie between the two methods an exception will be thrown.