Avatars can be placed in your layout files as either: EntityAvatarView or UserAvatarView.

<com.thumbtack.thumbprint.views.EntityAvatarView
    android:id="@+id/variationEntity"
    style="@style/avatarExtraLarge" />

<com.thumbtack.thumbprint.views.UserAvatarView
    android:id="@+id/variationUser"
    style="@style/avatarExtraLarge"/>

variationEntity.bind(imageUrl = NICOLAS_CAGE_URL, initials = "N")
variationUser.bind(imageUrl = NICOLAS_CAGE_URL, initials = "NC")

UserAvatarView is for people or users whereas EntityAvatarView is for companies, businesses, or services.

Note that image URLs and avatar initials are not specified in the layout; those are specified in the avatar's .bind() method.

/**
* Begins loading the image from the given [imageUrl], positions and sizes the online badge,
* sets its visiblity based on [isOnline], and create a [BlankAvatarDrawable] as the
* fallback avatar. The [BlankAvatarDrawable] will contain the string [initials] and use the
* colors specified in [BlankAvatarDrawable.setColorsFromInitials], which maps the first letter
* of [initials] to background and text color values.
*
* If no [imageUrl] is given, or if there is an error fetching the image, then the
* [BlankAvatarDrawable] created from [initials] will be displayed. A gray placeholder is shown
* during the image's loading if an [imageUrl] is specified.
*
* If both [imageUrl] and [initials] are unspecified, no avatar will be displayed.
*
* As specified in Thumbprint style guides, entity avatars should pass in one letter
* for [initials] and user avatars should pass in two letters for [initials].
*/
fun bind(imageUrl: String? = null, initials: String? = null, isOnline: Boolean = false) {
    ...
}

Both UserAvatarView and EntityAvatarView are available in five sizes ranging from avatarExtraLarge to avatarExtraSmall.

<com.thumbtack.thumbprint.views.UserAvatarView
    style="@style/avatarExtraLarge"/>

<com.thumbtack.thumbprint.views.UserAvatarView
    style="@style/avatarLarge"/>

<com.thumbtack.thumbprint.views.UserAvatarView
    style="@style/avatarMedium"/>

<com.thumbtack.thumbprint.views.UserAvatarView
    style="@style/avatarSmall"/>

<com.thumbtack.thumbprint.views.UserAvatarView
    style="@style/avatarExtraSmall"/>

---

<com.thumbtack.thumbprint.views.EntityAvatarView
    style="@style/avatarExtraLarge"/>

<com.thumbtack.thumbprint.views.EntityAvatarView
    style="@style/avatarLarge"/>

<com.thumbtack.thumbprint.views.EntityAvatarView
    style="@style/avatarMedium"/>

<com.thumbtack.thumbprint.views.EntityAvatarView
    style="@style/avatarSmall"/>

<com.thumbtack.thumbprint.views.EntityAvatarView
    style="@style/avatarExtraSmall"/>

Avatars without images can display the the user or entity’s initials instead. The initials and background colors are assigned based on the first letter in the initials parameter of the .bind() method.

<LinearLayout
    android:id="@+id/noImagesUser"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    android:gravity="center">

    <com.thumbtack.thumbprint.views.UserAvatarView
        style="@style/avatarMedium"/>
        ...

</LinearLayout>

<LinearLayout
    android:id="@+id/noImagesEntity"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    android:gravity="center">

    <com.thumbtack.thumbprint.views.EntityAvatarView
        style="@style/avatarMedium"/>
        ...

</LinearLayout>

var letters = sequenceOf("A", "B", "C", "D", "E", "F").iterator()
noImagesUser.forEachChild {
    (it as? UserAvatarView)?.bind(imageUrl = null, initials = letters.next() + "A")
}

letters = sequenceOf("A", "B", "C", "D", "E", "F").iterator()
noImagesEntity.forEachChild {
    (it as? EntityAvatarView)?.bind(imageUrl = null, initials = letters.next())
}

This badge indicates that a user or entity is online. It can be set initially through the .bind() method, or dynamically through the setIsOnline() method.

badgesUser.forEachChild {
    (it as? UserAvatarView)?.bind(imageUrl = NICOLAS_CAGE_URL, isOnline = true)
}

badgesEntity.forEachChild {
    (it as? EntityAvatarView)?.bind(imageUrl = NICOLAS_CAGE_URL, isOnline = true)
}