How To Guides Index

These guides walk you through common development tasks for Vega apps on Fire TV.

Media playback

• Detect screen resolution in Vega — Query the connected display's resolution so your app requests the correct video stream for HD or 4K TVs.
• Implement closed captions and subtitles in Vega — Render in-band and out-of-band captions using W3C text track APIs and the KeplerCaptionsView component.

UI and interaction

• Create animations in Vega using the Animated API — Build smooth, interactive animations with React Native's built-in Animated API, starting from the hello-world template.
• Handle onSubmitEditing Events in Vega Password Fields — Filter onSubmitEditing() callbacks by submitAction to prevent unintended behavior when users toggle password visibility.
• Implement interactive toast notifications in Vega — Add a TV-optimized toast notification with a long-press progress bar that lets users start streaming from the home screen.

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Last updated: Mar 10, 2026