Resources For TV Channel Developers

Android TV and Google TV share the same underlying platform (Android TV OS), which lets developers build Android apps and games for the TV using familiar Android tools and frameworks .

The ecosystem supports several types of TV experiences  - from standard APK-based apps (including streaming video apps and games) to live TV channel integrations  - and provides specialized SDKs and libraries to create a 10-foot UI for remote control navigation.

Below is a summary of the key components and considerations for developing on Android TV / Google TV, along with actionable guidance for new developers. 

• Android TV Apps (APKs/App Bundles): Android TV apps are packaged the same way as mobile apps (standard APK or App Bundle) and distributed via Google Play. They can be streaming media apps, games, utilities, etc., and run full-screen on the TV. Under the hood, TV apps use the same Android framework as phones/tablets, but must meet TV-specific requirements (e.g. a leanback launcher activity, no touchscreen requirement) to be recognized as TV apps. Apps get a launcher icon and banner on the TV home screen and appear in the Apps or Games row once installed. 

• Streaming Video & Media Apps: Most Android TV apps are media-centric (e.g. Netflix, YouTube, music apps). These apps often rely on Android’s media support for playing video/audio. Android TV supports all standard Android media codecs and streaming protocols (H.264/AVC, H.265/HEVC, VP9, MPEG-DASH, HLS, etc.), and developers typically use High-level media libraries like ExoPlayer (Jetpack Media3) or the built-in MediaPlayer API for efficient streaming playback . This allows smooth delivery of HD/4K video, adaptive streaming, and DRM content on TV devices. Ensure the video formats and DRM used in your app are among those supported by Android’s media framework for broad device compatibility . 

• Live TV Channel Integrations: Android TV provides a TV Input Framework (TIF) for publishing linear TV channels (24/7 streams or broadcast content) that integrate into the system TV interface (the Live Channels app or Live tab) . A TV Input Service can present live streams as channels with program guides (EPG), allowing users to tune channels via the system’s live TV app . However, Google’s guidelines caution that TIF is primarily intended for device manufacturers (OEMs) and legacy use (Android 5.0–7.1). For third-party developers of streaming “live” content, the recommended approach from Android 8.0 onwards is to create channels on the home screen using the standard TV APIs (described below) rather than implementing a TIF service . In practice, this means if you have live-streaming content, you would typically build a regular TV app that plays the stream and use content recommendations (Channels API) for discovery, unless you are integrating actual broadcast tuner sources. 

• Home Screen Channels (Content Recommendations): Starting with Android 8.0 (Oreo) and on Google TV, apps can create “Channels” on the home screen  - rows of recommended content that appear under the app’s icon . Each channel is a collection of program cards (movies, shows, etc.) that link into your app. The first channel you publish becomes your app’s default channel (shown by default), and users can choose to add additional channels your app provides. There is also a system-controlled “Watch Next” channel where your app can contribute content the user is in the middle of or likely to watch next. Using these APIs, a video app can surface its content directly on the launcher (with cover art, titles, and even video previews) to drive engagement. Implementing home screen channels is highly encouraged for content apps as an alternative to (or in addition to) a standalone in-app experience . (Before Oreo, a single recommendations row was used  - modern apps should support the channel-based recommendation model for Oreo+ while falling back to the older recommendation row for compatibility .) 

• Games and Other Apps: Android TV also supports games and general apps. Games can target gamepad or remote control input. Non-media apps (like utilities, dashboards, etc.) are less common but possible  - they should still adhere to TV design guidelines (landscape orientation, D-pad navigation). If a game requires a gamepad, it must declare that in the manifest and still handle the standard remote gracefully where applicable . Generally, any app that doesn’t require touchscreen can potentially run on Android TV, but the UI must be redesigned for large screens and remote input. 

Note on Formats: All TV apps run in landscape HD/UHD resolutions. The UI should avoid any critical content near screen edges to account for overscan on certain TVs (ensure nothing vital is cut off) .

Additionally, if your app plays video or audio content, it should properly handle media keys from the remote (Play/Pause, Fast-Forward, Rewind) and offer features like Picture-in-Picture for video playback if appropriate (Android TV supports PiP for apps playing video, allowing users to browse or multitask) . 

Android TV development is fully supported by the standard Android SDK and Android Studio, plus some additional libraries and tools geared towards TV: 

• Android Studio & SDK: Use the latest Android Studio to develop TV apps. Android Studio provides project templates for Android TV (you can start a new project with a “TV Activity”). Make sure to install the Android TV SDK components via the SDK Manager  - at minimum, SDK level 21+ (Android 5.0 Lollipop) which introduced TV support . The Android SDK includes emulator images for Android TV/Google TV; you can create a virtual TV device (with custom resolution and remote control) to run and test your app. It’s also recommended to test on real hardware if possible  - e.g. a Chromecast with Google TV, Nvidia Shield, or an official dev device like ADT-3  - to verify performance and remote input behavior. 

• Jetpack Compose for TV (AndroidX TV Libraries): Jetpack Compose for TV is Google’s modern toolkit for building TV UIs. Compose for TV provides TV-optimized UI components (in androidx.tv.* packages) such as material components with focus animations, grids and carousels, etc., designed for couch viewing and D-pad navigation*. Using Compose greatly simplifies developing responsive TV layouts and handling focus state, compared to the older fragment-based approach. (Note: The previously used Leanback library  - part of AndroidX  - is now deprecated in favor of Compose . Leanback used a set of fragments (BrowseFragment, DetailsFragment, RowsSupportFragment, etc.) and support classes to create the classic “leanback” look. New projects are encouraged to use Compose, which can achieve the same 10-foot UIs with less code and more flexibility .) If maintaining an existing app that uses Leanback, you can continue to use it, but for a new app start with Compose for TV to future-proof your development. 

• Android TV Jetpack Libraries:* Apart from UI, there are other AndroidX libraries for TV: for example, AndroidX Media (part of Jetpack Media3 library, which includes ExoPlayer) for media playback, TV Recommendation APIs for home screen channels, and TV Input APIs if needed. Many of these are covered in the Android TV documentation:* 

• Leanback/TV UI Library: (Deprecated) Provided androidx.leanback.widget classes for layouts, guidance wizard, playback controls, etc., specifically for TV. Replaced by Compose for TV components now . 

• Media Playback: ExoPlayer (now part of Media3 Jetpack library) is the preferred way to play streaming media. It handles adaptive streaming formats and DRM and ties into Android’s media session framework for controlling playback via the remote or Assistant. The Media3 ExoPlayer APIs are supported on TV just as on mobile . Alternatively, MediaPlayer or MediaCodec can be used for simpler cases, but ExoPlayer is highly recommended for feature-rich media apps. 

• *TV Input Framework (TIF): If you do need to implement live TV channels at the system level, the TIF API (in *android.media.tv.) is available. You would create a subclass of TvInputService and define channels/programs. As noted, this is typically for hardware inputs or operator apps; third-party developers should use it only in special case. 

• Home Screen Channels API: Classes like TvProvider, Channels and Programs content providers, and helper APIs to publish channels and program data for the home screen recommendations. The Watch Next API allows adding content to the global “Watch Next” row. These are part of the Android TV provider/launcher integration APIs. 

• Google Assistant / Voice Search: Android TV supports voice search (via Assistant or the newer Gemini assistant). To integrate, apps can implement a searchable content provider or handle specific Assistant intents (e.g. media sessions with proper metadata). While not a separate SDK, ensure your app’s media content is exposed to Assistant (for example, by implementing MediaBrowserService for your content library) so users can say “Play X on YourApp” and it launches the right content. 

• Developer Tools & Testing: Aside from core SDKs, key tools include: 

• Emulator & Remote Control: The Android TV emulator in Android Studio can simulate DPAD input (the emulator toolbar has buttons for Up/Down/Left/Right/Select). You can also connect a game controller or use your keyboard to simulate remote buttons. 

• ADB & Sideloading: You’ll use the Android Debug Bridge (ADB) to install and debug apps on physical TV devices, since they often lack a browser for direct downloads. Enable developer options on the device and use adb install to sideload your APK for testing. 

• Testing & Debugging: Use Android Studio’s Layout Inspector and Memory Profiler on your running TV app to ensure your UI layout scales for 1080p/4K and to monitor memory usage (which is critical on lower-end smart TVs). The TV emulator can also help test different screen sizes and overscan by configuring display settings. 

• Android TV Reference Devices: If available, the ADT-3 dev kit (a small Android TV box from Google) is handy for testing on actual hardware with Android TV 12+. Otherwise, consumer devices like NVIDIA Shield (Android TV) or Chromecast with Google TV can be used in developer mode for deployment and testing. 

Developing an Android TV / Google TV app typically follows a similar workflow to a mobile Android app, with additional steps to cater to TV: 

1. Set up SDK and Project: In Android Studio, install the latest Android SDK and the Android TV platform packages. Create a new project using a TV app template if available, or add a TV Activity to an existing app. The project should target at least API Level 21 (Lollipop) or higher. Add the AndroidX TV libraries you need (for Compose for TV, include the androidx.tv:tv-material dependency and other Compose libraries; for Leanback (if using), add androidx.leanback:leanback library). 

2. Declare TV-specific Configuration: Update your app manifest with required TV settings: 

• Leanback Launcher Intent: Add an activity intent-filter with CATEGORY_LEANBACK_LAUNCHER (in addition to the normal LAUNCHER) for your main TV activity . This flags the app as TV-enabled. Without it, the app will not appear on Android TV home or Play Store for TV users. 

• Uses-feature Flags: Declare that the app does not require a touchscreen: <uses-feature android:name="android.hardware.touchscreen" android:required="false"/>. Also declare android.software.leanback feature support. These ensure the app is categorized properly in Play Store and only installed on TVs if appropriate . If your app targets both mobile and TV, set required="false" for leanback to allow installation on phones too (and use multiple APKs or bundles for distribution as needed) . 

• App Icons and Graphics: Include a banner image (320x180 px) in the manifest (android:banner) and a high-resolution app icon (xhdpi or higher). These will be used on the TV launcher. Follow the Android TV design guide for icon and banner styling (they should clearly show your app name/logo with readable text). 

• TV Layout Orientation: Ensure your app’s activities are locked to landscape (TV apps should not use portrait layouts). 

3. Design the 10-foot UI: Design your app’s UI for a living-room experience: 

• Use Compose for TV components or Leanback fragments to build a home screen within your app. Common pattern is a Main Browse screen with rows of content (cards) that the user can scroll through using the D-pad, and a Detail/Playback screen for when content is selected. The Android TV sample projects (e.g. “JetStream” for Compose or Leanback showcase) provide good starting points for layout structure. 

• Optimize font sizes, focus highlights, and contrast for readability from ~10 feet away . Limit dense text; rely on big imagery and simple descriptions. 

• Implement D-Pad navigation logic if not using a provided UI framework. In Compose/Leanback, much of this is handled for you (components automatically handle focus traversal). If doing custom views, ensure the focusable attributes are set and use the D-Pad events. Test with a remote to verify that the focus moves intuitively through your UI elements (e.g. wrapping from last item of a row to first of next row, etc.). 

4. Implement Core Functionality: Develop the functionality just like a regular Android app: 

• Media Playback: If your app streams video/audio, integrate ExoPlayer or MediaPlayer. Manage audio focus and use a MediaSession so that play/pause and other controls work with the remote and system (this also enables features like Now Playing cards on the home screen for background audio) . Support pause/resume via the center D-pad button and fast-forward/rewind via left/right D-pad by handling those key events or using ExoPlayer’s built-in handling. 

• Content Feeds: If applicable, fetch and display content from your service or local source. For live content, set up your streaming URLs. 

• Navigation & Input: Ensure the Back button navigates properly (Back should usually return to the previous screen or exit the app to home  - never get stuck). If text input is needed (search, login), consider using on-screen keyboards or voice input; Leanback SearchFragment provides a built-in voice search UI that hands off query to your app. 

5. Integrate with TV Platform Features: Leverage Android TV specific APIs to make your app feel native: 

• Home Screen Channels & Recommendations: Decide on at least a default channel to represent your content on the home launcher. Use the Channel API to create a channel and add programs to it (e.g. trending movies, or user’s watchlist items). For each program, provide metadata (title, image, description, intent to play in your app). Also implement adding to the Watch Next channel for content the user hasn’t finished or might resume . This integration will make your app’s content visible on the main UI and improve discovery. 

• Google Assistant Support: (Optional but beneficial) Implement voice search integration. For video apps, handle the standard media search intent so that if a user uses Assistant (“Search for X on MyApp”), your app can return results. Make sure your content titles are accessible via the global search (this can be done via a content provider that the system’s search indexes, or simply by handling deep links). 

• Alternate Control Inputs: If your app is a game, integrate gamepad controls. If it’s not a game, it should still gracefully handle a gamepad as input (which typically maps to DPAD and buttons similarly). 

6. Test on TV Devices: Run your app on an emulator and real devices. Verify the layout on a big screen  - sit back from your monitor to simulate a TV viewing distance and see if everything is legible. Test navigation thoroughly with a remote or gamepad (no touchscreen!). Use Android Studio’s profiler to monitor memory and CPU while playing videos or browsing long lists; TV devices can have as low as 1GB RAM, so watch for leaks or high RAM usage that could cause slowdowns or OS kills. If possible, test on both a high-end TV device and a low-end one (to ensure performance is acceptable on all). 

7. Prepare for Release: Follow the TV App Quality guidelines before publishing. This includes ensuring your app meets requirements like: proper banner and icon, consistent D-pad navigation, no hidden touchscreen-only features, acceptable performance on low RAM, etc.. When publishing in the Play Console, you’ll need to opt-in your app for Android TV distribution and upload TV screenshots. Google Play will review your app against the TV quality checklist upon submission  - if you’ve followed the guidelines, it should pass. Then your app will be listed for Android TV users on Google Play. 

Building for Android TV/Google TV comes with unique challenges.

Here are important best practices to ensure a great user experience: 

Design for the 10-Foot UI

Optimize UI/UX for large screens and distant viewing. Use simple, bold layouts with large visuals and text that’s readable from ~10 feet away. Avoid clutter and minimize text input. Keep the focus on content - for TV apps, content (videos, images) should dominate the screen rather than complex menus.

D-Pad Navigation & Remote Controls

Ensure full navigation via D-pad (Up/Down/Left/Right/Select) – every actionable item must be reachable by moving focus. Provide clear visual focus indicators on the focused element (the default in Compose/Leanback does this). Handle Back button properly to exit or go up in the UI stack. Also, support standard media keys (Play/Pause, etc.) during playback, and do not rely on deprecated remote buttons like “Menu” which aren’t present on modern remotes.

Leverage TV-specific APIs

Integrate with the TV home screen for better discovery. Use the Recommendations Channels API to surface content on the launcher (with a default channel and additional channels as appropriate). Implement Watch Next so users can easily resume content. These integrations increase engagement and are part of Google’s quality criteria. If your app plays content in the background (audio apps), provide a Now Playing card on the home screen as required.

Performance and Memory Optimization

TV devices often have limited resources (many have 1-2 GB RAM and mid-range CPUs). Optimize your app by using efficient image loading (load lower-resolution images for backgrounds/thumbnails to save memory) and release unused resources. Follow memory best practices: avoid memory leaks (use Android Studio profiler to catch them) and keep overall memory usage below the recommended thresholds for low-RAM devices to prevent the OS from killing your app. Also, test on lower-end hardware to ensure smooth scrolling and video playback without stutter.

User Experience & Best Practices

Deliver a TV-friendly experience: All apps should run in landscape and avoid UI elements getting cut off (respect overscan safe zones). Make sure any on-screen text is large and contrasts with the background. If your app has inactivity or screensavers, allow the system screen saver (Ambient Mode) to kick in when appropriate. For media apps, prefer pausing video when the app is backgrounded (rather than continuing playback unseen).

Always test the first-time user experience on TV: does your app guide new users clearly using the remote? Provide tutorials or hints if necessary, especially if your app requires unusual input.

Tip: Use Google’s sample projects and templates. The official Android TV sample apps (see Resources below) demonstrate recommended architecture and design. For instance, the “ReferenceAppKotlin” sample shows various Google TV integrations in one project.

Studying these will accelerate your understanding of best practices (such as how to implement a smoothly scrolling grid of movies, or how to add programs to Watch Next properly). 

inally, keep in mind that Android TV / Google TV is an evolving platform.

Google is investing in new features like improved Assistant (and Gemini AI) on TV, and updated design guidelines with the shift to Google TV interface. 

Stay updated via the Android Developers Blog and the official documentation for any changes to recommended libraries or requirements.

By following the above guidelines and utilizing the available tools, developers can create engaging, performant TV apps that reach users in the living room.