Android | How to Change Toast font?

A Toast is a feedback message. It takes a very little space for displaying while overall activity is interactive and visible to the user. It disappears after a few seconds. It disappears automatically. If user wants permanent visible message, Notification can be used.

Toast disappears automatically based on the toast length defined by the developer. Steps to change the toast message font are as follow:

1. Step 1: Add a buttons in activity_main.xml file to show toast message with custom font.
   Open activity_main.xml file and create a button with id showToast.

   
   

   
   
   

   <?xml version="1.0" encoding="utf-8"?> <RelativeLayout      xmlns: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"     tools:context=".MainActivity">        <!--  To show the Toolbar-->     <android.support.v7.widget.Toolbar         android:id="@+id/toolbar"         android:layout_width="match_parent"         android:background="@color/colorPrimary"         app:title="GFG"         app:titleTextColor="@android:color/white"         android:layout_height="android:attr/actionBarSize"/>        <!-- Button To show the toast message-->        <Button         android:id="@+id/showToast"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Show Toast"         android:layout_marginTop="16dp"         android:padding="8dp"         android:layout_below="@id/toolbar"         android:layout_centerHorizontal="true"/>    </RelativeLayout>

2. Step 2: Open styles.xml file and add new style for toast message.

   Open style.xml file and add the following code. Here sans-serif-black font is used.

   
   

   
   
   

   <!-- Toast Style --> <style name="toastTextStyle" parent="TextAppearance.AppCompat">     <item name="android:fontFamily">sans-serif-black</item> </style>

3. Step 3: Open MainActivity.java and add function to show custom Toast.

   Create a new instance of Toast using makeText() method. Use getView() method to get the view of the Toast. Open MainActivity.java file and add function to show toast message.

   
   

   
   
   

   private void showMessage(Boolean b, String msg) {        // Creating new instance of Toast     Toast toast         = Toast.makeText(             MainActivity.this,             " " + msg + " ",             Toast.LENGTH_SHORT);        // Getting the View     View view = toast.getView();        // Finding the textview in Toast view     TextView text         = (TextView)view               .findViewById(                   android.R.id.message);        // Setting the Text Appearance     if (Build.VERSION.SDK_INT         >= Build.VERSION_CODES.M) {         text.setTextAppearance(             R.style.toastTextStyle);     }        // Showing the Toast Message     toast.show(); }

4. Step 4: setOnClickListener to the button and show the toast message.

   To setOnclickListener() first create a new instance of Button class in Java file and find the button view using the id given in xml file and call the setOnClickListener() method on the button object.

   
   

   
   
   

   // Finding the button Button showToast     = findViewById(R.id.showToast);    // Setting the on click listener showToast     .setOnClickListener(         new View.OnClickListener() {             @Override             public void onClick(View v)             {                    // Calling the function                 // to show toast message                 showMessage();             }         });

Finally files are

Output: