How to change font family of Android Date Picker?

Question

I want to change the font family of the android date picker

<DatePicker
            android:id="@+id/dob_picker"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:calendarViewShown="false"
            android:datePickerMode="spinner" />

Answer 1

create a theme, ex

    <style name="PickerTheme">
        <!-- Customize your theme here. -->
        <item name="android:fontFamily">@font/open_sans</item>
    </style>

then

<DatePicker
        android:id="@+id/dob_picker"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:calendarViewShown="false"
        android:theme="@style/PickerTheme"
        android:datePickerMode="spinner" />

Answer 2

For anyone still facing issue in 2022, create theme first:

  <style name="PickerTheme">
        <!-- Customize your theme here. -->
        <item name="android:fontFamily">@font/open_sans</item>
    </style>

and add this line to layout:

        app:theme="@style/PickerTheme"

Instead of android:theme so try this this worked for me.