# 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)

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```
public class KeyFrames
```

<br />

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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/androidx/constraintlayout/core/dsl/KeyFrames#KeyFrames()()` |

| ### Public methods |
|---|---|
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyFrames#add(androidx.constraintlayout.core.dsl.Keys)(https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Keys keyFrame)` |
| `https://developer.android.com/reference/java/lang/String.html` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyFrames#toString()()` |

## Public constructors

### KeyFrames

Added in 1.1.2

```
public KeyFrames()
```

## Public methods

### add

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

```
public void add(Keys keyFrame)
```

### toString

```
public String toString()
```