# ChipSection.Builder

Artifact: [androidx.car.app:app](https://developer.android.com/jetpack/androidx/releases/car-app) [View Source](https://cs.android.com/search?q=file:androidx/car/app/model/ChipSection.java+class:androidx.car.app.model.ChipSection.Builder) Added in [1.8.0](https://developer.android.com/jetpack/androidx/releases/car-app#1.8.0)

*** ** * ** ***


```
class ChipSection.Builder : Section.BaseBuilder<Chip!, ChipSection.Builder!>
```

<br />

|---|---|---|
| [kotlin.Any](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-any/index.html) |||
| ↳ | [androidx.car.app.model.Section.BaseBuilder](https://developer.android.com/reference/kotlin/androidx/car/app/model/Section.BaseBuilder)\<[Chip](https://developer.android.com/reference/kotlin/androidx/car/app/model/Chip)!, [ChipSection.Builder](https://developer.android.com/reference/kotlin/androidx/car/app/model/ChipSection.Builder)!\> ||
|   | ↳ | [androidx.car.app.model.ChipSection.Builder](https://developer.android.com/reference/kotlin/androidx/car/app/model/ChipSection.Builder) |

*** ** * ** ***

A builder of `https://developer.android.com/reference/kotlin/androidx/car/app/model/ChipSection`.

## Summary

| ### Public constructors |
|---|
| `https://developer.android.com/reference/kotlin/androidx/car/app/model/ChipSection.Builder#Builder()()` Creates a new instance of the builder. |

| ### Public functions |
|---|---|
| `https://developer.android.com/reference/kotlin/androidx/car/app/model/ChipSection` | `https://developer.android.com/reference/kotlin/androidx/car/app/model/ChipSection.Builder#build()()` Constructs the `https://developer.android.com/reference/kotlin/androidx/car/app/model/ChipSection` defined by this builder. |
| `https://developer.android.com/reference/kotlin/androidx/car/app/model/ChipSection.Builder` | `https://developer.android.com/reference/kotlin/androidx/car/app/model/ChipSection.Builder#setStyle(androidx.car.app.model.ChipStyle)(style: https://developer.android.com/reference/kotlin/androidx/car/app/model/ChipStyle)` Sets the style for all chips in this section. |

### Inherited functions

From [androidx.car.app.model.Section.BaseBuilder](https://developer.android.com/reference/kotlin/androidx/car/app/model/Section.BaseBuilder) `B` `@https://checkerframework.org/api/com/google/errorprone/annotations/CanIgnoreReturnValue.html
https://developer.android.com/reference/kotlin/androidx/car/app/model/Section.BaseBuilder#addItem(T)(item: T)`

Adds an item to this section, appending to the existing list of items.
`B` `@https://checkerframework.org/api/com/google/errorprone/annotations/CanIgnoreReturnValue.html
https://developer.android.com/reference/kotlin/androidx/car/app/model/Section.BaseBuilder#clearItems()()`

Delete all items in this section.
`B` `@https://checkerframework.org/api/com/google/errorprone/annotations/CanIgnoreReturnValue.html
https://developer.android.com/reference/kotlin/androidx/car/app/model/Section.BaseBuilder#setItems(java.util.List<T>)(items: (https://kotlinlang.org/api/core/kotlin-stdlib/kotlin.collections/-mutable-list/index.html)https://kotlinlang.org/api/core/kotlin-stdlib/kotlin.collections/-list/index.html<T!>)`

Sets the items for this section, overwriting any other previously set items.
`B` `@https://checkerframework.org/api/com/google/errorprone/annotations/CanIgnoreReturnValue.html
https://developer.android.com/reference/kotlin/androidx/car/app/model/Section.BaseBuilder#setNoItemsMessage(androidx.car.app.model.CarText)(noItemsMessage: https://developer.android.com/reference/kotlin/androidx/car/app/model/CarText?)`

Sets or clears the optional message to display in this section when there are 0 items added to it.
`B` `@https://checkerframework.org/api/com/google/errorprone/annotations/CanIgnoreReturnValue.html
https://developer.android.com/reference/kotlin/androidx/car/app/model/Section.BaseBuilder#setNoItemsMessage(java.lang.CharSequence)(noItemsMessage: https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-char-sequence/index.html?)`

Sets or clears the optional message to display in this section when there are 0 items added to it.
`B` `@https://checkerframework.org/api/com/google/errorprone/annotations/CanIgnoreReturnValue.html
https://developer.android.com/reference/kotlin/androidx/car/app/model/Section.BaseBuilder#setOnItemVisibilityChangedListener(androidx.car.app.model.ItemList.OnItemVisibilityChangedListener)(
onItemVisibilityChangedListener: https://developer.android.com/reference/kotlin/androidx/car/app/model/ItemList.OnItemVisibilityChangedListener?
)`

Sets the `https://developer.android.com/reference/kotlin/androidx/car/app/model/ItemList.OnItemVisibilityChangedListener` to call when the visible items in this `https://developer.android.com/reference/kotlin/androidx/car/app/model/Section` changes.
`B` `@https://checkerframework.org/api/com/google/errorprone/annotations/CanIgnoreReturnValue.html
@https://developer.android.com/reference/kotlin/androidx/car/app/annotations/RequiresCarApi(value = 9)
@https://developer.android.com/reference/kotlin/androidx/car/app/annotations/ExperimentalCarApi
https://developer.android.com/reference/kotlin/androidx/car/app/model/Section.BaseBuilder#setSectionHeader(androidx.car.app.model.SectionHeader)(sectionHeader: https://developer.android.com/reference/kotlin/androidx/car/app/model/SectionHeader?)`

Sets the `https://developer.android.com/reference/kotlin/androidx/car/app/model/SectionHeader` for this section.
`B` `@https://checkerframework.org/api/com/google/errorprone/annotations/CanIgnoreReturnValue.html
https://developer.android.com/reference/kotlin/androidx/car/app/model/Section.BaseBuilder#setTitle(androidx.car.app.model.CarText)(title: https://developer.android.com/reference/kotlin/androidx/car/app/model/CarText?)`

Sets or clears the optional title that appears above the items in this section.
`B` `@https://checkerframework.org/api/com/google/errorprone/annotations/CanIgnoreReturnValue.html
https://developer.android.com/reference/kotlin/androidx/car/app/model/Section.BaseBuilder#setTitle(java.lang.CharSequence)(title: https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-char-sequence/index.html?)`

Sets or clears the optional title that appears above the items in this section.

## Public constructors

### Builder

Added in [1.8.0](https://developer.android.com/jetpack/androidx/releases/car-app#1.8.0)

```
Builder()
```

Creates a new instance of the builder.

## Public functions

### build

Added in [1.8.0](https://developer.android.com/jetpack/androidx/releases/car-app#1.8.0)

```
fun build(): ChipSection
```

Constructs the `https://developer.android.com/reference/kotlin/androidx/car/app/model/ChipSection` defined by this builder.

| Throws |
|---|---|
| `https://developer.android.com/reference/java/lang/IllegalArgumentException.html` | if the section does not contain at least one item. |

### setStyle

Added in [1.8.0](https://developer.android.com/jetpack/androidx/releases/car-app#1.8.0)

```
fun setStyle(style: ChipStyle): ChipSection.Builder
```

Sets the style for all chips in this section.

Any fields not explicitly set here or in the individual chip styling of `https://developer.android.com/reference/kotlin/androidx/car/app/model/Chip.Builder#setStyle(androidx.car.app.model.ChipStyle)` will fall back to host defaults. If the colors do not meet the contrast requirements, the host will set the chip styling to defaults based on the `https://developer.android.com/reference/kotlin/androidx/car/app/model/Chip.Builder#setSelected(boolean)` state.

| Throws |
|---|---|
| `https://developer.android.com/reference/java/lang/NullPointerException.html` | if `style` is `null` |