---
description: API reference for RtkButton component (Android Library)
title: RtkButton
image: https://developers.cloudflare.com/og-docs.png
---

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# RtkButton

Last updated Aug 24, 2026|Copy as Markdown|[View as Markdown](https://e8aee267.previews.developers.cloudflare.com/realtime/realtimekit/ui-kit/api-reference/android/button/index.md)|[Agent setup](https://e8aee267.previews.developers.cloudflare.com/agent-setup/)

A button that follows the RealtimeKit design system.

## Properties

| Property          | Type                 | Required | Default | Description |                |
| ----------------- | -------------------- | -------- | ------- | ----------- | -------------- |
| rtk\_btn\_variant | primary \| secondary | danger   | ❌       | \-          | Button variant |

## Methods

| Method            | Parameters                    | Description                                 |
| ----------------- | ----------------------------- | ------------------------------------------- |
| applyDesignTokens | designTokens: RtkDesignTokens | Apply custom design tokens for theming      |
| refresh           | uiTokens: RtkDesignTokens     | Refresh the button with the provided tokens |

## Usage Examples

### Basic Usage

```xml
<com.cloudflare.realtimekit.ui.view.button.RtkButton
    android:id="@+id/btn_id"
    android:layout_width="200dp"
    android:layout_height="48dp"
    android:text="Text on Button"
    app:rtk_btn_variant="primary" />
```

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