TvLazyListScope

@TvLazyListScopeMarker
sealed interface TvLazyListScope

Receiver scope which is used by TvLazyColumn and TvLazyRow.

Summary

Public functions
Unit
item(key: Any?, contentType: Any?, content: @Composable TvLazyListItemScope.() -> Unit)

Adds a single item.
Unit
items(
    count: Int,
    key: ((index: Int) -> Any)?,
    contentType: (index: Int) -> Any,
    itemContent: @Composable TvLazyListItemScope.(index: Int) -> Unit
)

Adds a count of items.
Unit

Adds a sticky header item, which will remain pinned even when scrolling after it.

Extension functions
inline Unit
<T : Any?> TvLazyListScope.items(
    items: Array<T>,
    noinline key: ((item) -> Any)?,
    noinline contentType: (item) -> Any,
    crossinline itemContent: @Composable TvLazyListItemScope.(item) -> Unit
)

Adds an array of items.
inline Unit
<T : Any?> TvLazyListScope.items(
    items: List<T>,
    noinline key: ((item) -> Any)?,
    noinline contentType: (item) -> Any,
    crossinline itemContent: @Composable TvLazyListItemScope.(item) -> Unit
)

Adds a list of items.
inline Unit
<T : Any?> TvLazyListScope.itemsIndexed(
    items: Array<T>,
    noinline key: ((index: Int, item) -> Any)?,
    crossinline contentType: (index: Int, item) -> Any,
    crossinline itemContent: @Composable TvLazyListItemScope.(index: Int, item) -> Unit
)

Adds an array of items where the content of an item is aware of its index.
inline Unit
<T : Any?> TvLazyListScope.itemsIndexed(
    items: List<T>,
    noinline key: ((index: Int, item) -> Any)?,
    crossinline contentType: (index: Int, item) -> Any,
    crossinline itemContent: @Composable TvLazyListItemScope.(index: Int, item) -> Unit
)

Adds a list of items where the content of an item is aware of its index.

Public functions

item

Added in 1.0.0-alpha10
fun item(key: Any? = null, contentType: Any? = null, content: @Composable TvLazyListItemScope.() -> Unit): Unit

Adds a single item.

Parameters
key: Any? = null

a stable and unique key representing the item. Using the same key for multiple items in the list is not allowed. Type of the key should be saveable via Bundle on Android. If null is passed the position in the list will represent the key. When you specify the key the scroll position will be maintained based on the key, which means if you add/remove items before the current visible item the item with the given key will be kept as the first visible one.
contentType: Any? = null

the type of the content of this item. The item compositions of the same type could be reused more efficiently. Note that null is a valid type and items of such type will be considered compatible.
content: @Composable TvLazyListItemScope.() -> Unit

the content of the item

items

Added in 1.0.0-alpha10
fun items(
    count: Int,
    key: ((index: Int) -> Any)? = null,
    contentType: (index: Int) -> Any = { null },
    itemContent: @Composable TvLazyListItemScope.(index: Int) -> Unit
): Unit

Adds a count of items.

Parameters
count: Int

the items count
key: ((index: Int) -> Any)? = null

a factory of stable and unique keys representing the item. Using the same key for multiple items in the list is not allowed. Type of the key should be saveable via Bundle on Android. If null is passed the position in the list will represent the key. When you specify the key the scroll position will be maintained based on the key, which means if you add/remove items before the current visible item the item with the given key will be kept as the first visible one.
contentType: (index: Int) -> Any = { null }

a factory of the content types for the item. The item compositions of the same type could be reused more efficiently. Note that null is a valid type and items of such type will be considered compatible.
itemContent: @Composable TvLazyListItemScope.(index: Int) -> Unit

the content displayed by a single item

stickyHeader

Added in 1.0.0-alpha10
@ExperimentalTvFoundationApi
fun stickyHeader(
    key: Any? = null,
    contentType: Any? = null,
    content: @Composable TvLazyListItemScope.() -> Unit
): Unit

Adds a sticky header item, which will remain pinned even when scrolling after it. The header will remain pinned until the next header will take its place.

Parameters
key: Any? = null

a stable and unique key representing the item. Using the same key for multiple items in the list is not allowed. Type of the key should be saveable via Bundle on Android. If null is passed the position in the list will represent the key. When you specify the key the scroll position will be maintained based on the key, which means if you add/remove items before the current visible item the item with the given key will be kept as the first visible one.
contentType: Any? = null

the type of the content of this item. The item compositions of the same type could be reused more efficiently. Note that null is a valid type and items of such type will be considered compatible.
content: @Composable TvLazyListItemScope.() -> Unit

the content of the header

Extension functions

items

inline fun <T : Any?> TvLazyListScope.items(
    items: Array<T>,
    noinline key: ((item) -> Any)? = null,
    noinline contentType: (item) -> Any = { null },
    crossinline itemContent: @Composable TvLazyListItemScope.(item) -> Unit
): Unit

Adds an array of items.

Parameters
items: Array<T>

the data array
noinline key: ((item) -> Any)? = null

a factory of stable and unique keys representing the item. Using the same key for multiple items in the list is not allowed. Type of the key should be saveable via Bundle on Android. If null is passed the position in the list will represent the key. When you specify the key the scroll position will be maintained based on the key, which means if you add/remove items before the current visible item the item with the given key will be kept as the first visible one.
noinline contentType: (item) -> Any = { null }

a factory of the content types for the item. The item compositions of the same type could be reused more efficiently. Note that null is a valid type and items of such type will be considered compatible.
crossinline itemContent: @Composable TvLazyListItemScope.(item) -> Unit

the content displayed by a single item

items

inline fun <T : Any?> TvLazyListScope.items(
    items: List<T>,
    noinline key: ((item) -> Any)? = null,
    noinline contentType: (item) -> Any = { null },
    crossinline itemContent: @Composable TvLazyListItemScope.(item) -> Unit
): Unit

Adds a list of items.

Parameters
items: List<T>

the data list
noinline key: ((item) -> Any)? = null

a factory of stable and unique keys representing the item. Using the same key for multiple items in the list is not allowed. Type of the key should be saveable via Bundle on Android. If null is passed the position in the list will represent the key. When you specify the key the scroll position will be maintained based on the key, which means if you add/remove items before the current visible item the item with the given key will be kept as the first visible one.
noinline contentType: (item) -> Any = { null }

a factory of the content types for the item. The item compositions of the same type could be reused more efficiently. Note that null is a valid type and items of such type will be considered compatible.
crossinline itemContent: @Composable TvLazyListItemScope.(item) -> Unit

the content displayed by a single item

itemsIndexed

inline fun <T : Any?> TvLazyListScope.itemsIndexed(
    items: Array<T>,
    noinline key: ((index: Int, item) -> Any)? = null,
    crossinline contentType: (index: Int, item) -> Any = { _, _ -> null },
    crossinline itemContent: @Composable TvLazyListItemScope.(index: Int, item) -> Unit
): Unit

Adds an array of items where the content of an item is aware of its index.

Parameters
items: Array<T>

the data array
noinline key: ((index: Int, item) -> Any)? = null

a factory of stable and unique keys representing the item. Using the same key for multiple items in the list is not allowed. Type of the key should be saveable via Bundle on Android. If null is passed the position in the list will represent the key. When you specify the key the scroll position will be maintained based on the key, which means if you add/remove items before the current visible item the item with the given key will be kept as the first visible one.
crossinline contentType: (index: Int, item) -> Any = { _, _ -> null }

a factory of the content types for the item. The item compositions of the same type could be reused more efficiently. Note that null is a valid type and items of such type will be considered compatible.
crossinline itemContent: @Composable TvLazyListItemScope.(index: Int, item) -> Unit

the content displayed by a single item

itemsIndexed

inline fun <T : Any?> TvLazyListScope.itemsIndexed(
    items: List<T>,
    noinline key: ((index: Int, item) -> Any)? = null,
    crossinline contentType: (index: Int, item) -> Any = { _, _ -> null },
    crossinline itemContent: @Composable TvLazyListItemScope.(index: Int, item) -> Unit
): Unit

Adds a list of items where the content of an item is aware of its index.

Parameters
items: List<T>

the data list
noinline key: ((index: Int, item) -> Any)? = null

a factory of stable and unique keys representing the item. Using the same key for multiple items in the list is not allowed. Type of the key should be saveable via Bundle on Android. If null is passed the position in the list will represent the key. When you specify the key the scroll position will be maintained based on the key, which means if you add/remove items before the current visible item the item with the given key will be kept as the first visible one.
crossinline contentType: (index: Int, item) -> Any = { _, _ -> null }

a factory of the content types for the item. The item compositions of the same type could be reused more efficiently. Note that null is a valid type and items of such type will be considered compatible.
crossinline itemContent: @Composable TvLazyListItemScope.(index: Int, item) -> Unit

the content displayed by a single item