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Migrating Jetpack Compose for TV from alpha to secure | by Paul Lammertsma | Android Builders | Sep, 2024


Thanks for all of your suggestions from utilizing the alphas to assist convey Compose for TV to the secure launch! It’s terrific that you simply’ve been utilizing Compose in your TV apps — then you definitely’ve seen how Compose is one of the simplest ways to construct consumer interfaces throughout all kind elements in Android and the way it simplifies and accelerates app growth with customization and styling via a contemporary, declarative syntax in Kotlin.

Maybe you’ve seen that we’ve shifted just a few issues round when Compose for TV graduated out of alpha. Learn on to discover ways to migrate your code with these adjustments.

Compose for TV consists of two AndroidX Jetpack libraries:

  • androidx.television.material3 is now secure in model 1.0.0
  • androidx.television.basis stays in alpha

Now that Compose for TV has graduated from alpha, we’ve promoted tv-material to secure and moved the scrollable containers in tv-foundation to the place they belong: in compose-foundation itself. The newest alpha model of the tv-foundation library merely marks these parts as deprecated. TvImeOptions continues to reside in tv-foundation.

The roadmap illustrates the history of both Compose for TV libraries starting in 2022. Parts of tv-foundation move to compose-foundation with only TvImeOptions remaining in 1.0.0-alpha. The tv-material library is shown to progress into beta in early 2024, then into RC, then stable as of today.
The Compose for TV roadmap

Based mostly on developer suggestions, we’ve modified numerous APIs, which implies some issues have been renamed, moved, or eliminated utterly. Whereas the great record is documented within the library launch notes, listed below are the first adjustments that will help you migrate.

APIs which were renamed

  • NonInteractiveSurfaceDefaults and NonInteractiveSurfaceColors have been renamed to SurfaceDefaults and SurfaceColors.
  • StandardCardLayout and WideCardLayout have been renamed to StandardCardContainer and WideCardContainer.
  • CardDefaults.ContainerGradient has been renamed to CardDefaults.ScrimBrush.

APIs which have modified

  • ListItem parameters have been rearranged and renamed to require offering headlineContent.
  • TvLazyRow, TvLazyColumn, TvLazyHorizontalGrid and TvLazyVerticalGridhave been eliminated as a result of their performance has been integrated into the scrollable containers in compose-foundation model 1.7.0-beta02.
    The supporting courses TvLazyListState and TvGridCells along with the strategies rememberTvLazyListState and rememberTvLazyGridState have additionally been changed with the Compose basis variations.
    You may migrate by merely eradicating the tv-foundation dependency; yow will discover every little thing you want in androidx.compose.basis.lazy by merely swapping all of your composables with the non-TV counterpart; for instance changing TvLazy* with Lazy* and rememberTvLazy*State with rememberLazy*State.

APIs which were eliminated

  • CardContainerDefaults.ImageCard has been eliminated; you need to use a Card and comprise a picture inside it as demonstrated in JetStream’s MovieCard.
  • ListItemDefaults.ListItemShape, ListItemDefaults.FocusedDisabledBorder & ListItemDefaults.SelectedContainerColorOpacity at the moment are personal as they aren’t defaults for the ListItem composable.
  • ImmersiveList has been eliminated as a result of limitations within the selection within the knowledge sorts that signify content material. As a substitute, you may create an immersive record with just some traces of code (a whole snippet is out there within the immersive record pattern):
  • With the migration of TvLazy* to Lazy*, scrollable containers now not help the pivotOffset parameter. In case your utility makes use of pivot offsets, You’ll need to outline a BringIntoViewSpec object implementing the pivot offset, and go it to Lazy* with LocalBringIntoViewSpec.
    See the PositionFocusedItemInLazyLayout snippet for a generic resolution that permits specifying the offset ratio.

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