# KeyFrames

Artifact: [androidx.constraintlayout:constraintlayout-core](https://developer.android.com/jetpack/androidx/releases/constraintlayout) [View Source](https://cs.android.com/search?q=file:androidx/constraintlayout/core/dsl/KeyFrames.java+class:androidx.constraintlayout.core.dsl.KeyFrames) Added in [1.1.2](https://developer.android.com/jetpack/androidx/releases/constraintlayout#1.1.2)

*** ** * ** ***


```
class KeyFrames
```

<br />

*** ** * ** ***

Provides the API for creating a KeyFrames Object for use in the Core ConstraintLayout \&MotionLayout system KeyFrames is a container for KeyAttribute,KeyCycle,KeyPosition etc.

## Summary

| ### Public constructors |
|---|
| `https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/KeyFrames#KeyFrames()()` |

| ### Public functions |
|---|---|
| `https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-unit/index.html` | `https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/KeyFrames#add(androidx.constraintlayout.core.dsl.Keys)(keyFrame: https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/Keys!)` |
| `https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html!` | `https://developer.android.com/reference/kotlin/androidx/constraintlayout/core/dsl/KeyFrames#toString()()` |

## Public constructors

### KeyFrames

Added in 1.1.2

```
KeyFrames()
```

## Public functions

### add

Added in [1.1.2](https://developer.android.com/jetpack/androidx/releases/constraintlayout#1.1.2)

```
fun add(keyFrame: Keys!): Unit
```

### toString

```
fun toString(): String!
```