# KeyAttribute

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/KeyAttribute.java+class:androidx.constraintlayout.core.dsl.KeyAttribute) Added in [1.1.2](https://developer.android.com/jetpack/androidx/releases/constraintlayout#1.1.2)

*** ** * ** ***


```
public class KeyAttribute extends Keys
```

<br />

|---|---|---|
| [java.lang.Object](https://developer.android.com/reference/java/lang/Object.html) |||
| ↳ | [androidx.constraintlayout.core.dsl.Keys](https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Keys) ||
|   | ↳ | [androidx.constraintlayout.core.dsl.KeyAttribute](https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute) |

Known direct subclasses [KeyCycle](https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyCycle)

|---|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyCycle` |   |

*** ** * ** ***

Provides the API for creating a KeyAttribute Object for use in the Core ConstraintLayout \&MotionLayout system

## Summary

| ### Nested types |
|---|
| `public enum https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute.Fit` |
| `public enum https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute.Visibility` |

| ### Protected fields |
|---|---|
| `https://developer.android.com/reference/java/lang/String.html` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#TYPE()` |

| ### Public constructors |
|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#KeyAttribute(int,java.lang.String)(int frame, https://developer.android.com/reference/java/lang/String.html target)` |

| ### Public methods |
|---|---|
| `float` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#getAlpha()()` |
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute.Fit` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#getCurveFit()()` |
| `float` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#getPivotX()()` |
| `float` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#getPivotY()()` |
| `float` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#getRotation()()` |
| `float` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#getRotationX()()` |
| `float` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#getRotationY()()` |
| `float` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#getScaleX()()` |
| `float` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#getScaleY()()` |
| `https://developer.android.com/reference/java/lang/String.html` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#getTarget()()` |
| `https://developer.android.com/reference/java/lang/String.html` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#getTransitionEasing()()` |
| `float` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#getTransitionPathRotate()()` |
| `float` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#getTranslationX()()` |
| `float` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#getTranslationY()()` |
| `float` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#getTranslationZ()()` |
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute.Visibility` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#getVisibility()()` |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#setAlpha(float)(float alpha)` |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#setCurveFit(androidx.constraintlayout.core.dsl.KeyAttribute.Fit)(https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute.Fit curveFit)` |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#setPivotX(float)(float pivotX)` |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#setPivotY(float)(float pivotY)` |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#setRotation(float)(float rotation)` |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#setRotationX(float)(float rotationX)` |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#setRotationY(float)(float rotationY)` |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#setScaleX(float)(float scaleX)` |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#setScaleY(float)(float scaleY)` |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#setTarget(java.lang.String)(https://developer.android.com/reference/java/lang/String.html target)` |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#setTransitionEasing(java.lang.String)(https://developer.android.com/reference/java/lang/String.html transitionEasing)` |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#setTransitionPathRotate(float)(float transitionPathRotate)` |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#setTranslationX(float)(float translationX)` |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#setTranslationY(float)(float translationY)` |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#setTranslationZ(float)(float translationZ)` |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#setVisibility(androidx.constraintlayout.core.dsl.KeyAttribute.Visibility)(https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute.Visibility visibility)` |
| `https://developer.android.com/reference/java/lang/String.html` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#toString()()` |

| ### Protected methods |
|---|---|
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/KeyAttribute#attributesToString(java.lang.StringBuilder)(https://developer.android.com/reference/java/lang/StringBuilder.html builder)` |

| ### Inherited methods |
|---|
| From [androidx.constraintlayout.core.dsl.Keys](https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Keys) |---|---| | `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Keys#append(java.lang.StringBuilder,java.lang.String,java.lang.String[])(https://developer.android.com/reference/java/lang/StringBuilder.html builder, https://developer.android.com/reference/java/lang/String.html name, String[] array)` | | `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Keys#append(java.lang.StringBuilder,java.lang.String,float[])(https://developer.android.com/reference/java/lang/StringBuilder.html builder, https://developer.android.com/reference/java/lang/String.html name, float[] array)` | | `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Keys#append(java.lang.StringBuilder,java.lang.String,float)(https://developer.android.com/reference/java/lang/StringBuilder.html builder, https://developer.android.com/reference/java/lang/String.html name, float value)` | | `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Keys#append(java.lang.StringBuilder,java.lang.String,int)(https://developer.android.com/reference/java/lang/StringBuilder.html builder, https://developer.android.com/reference/java/lang/String.html name, int value)` | | `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Keys#append(java.lang.StringBuilder,java.lang.String,java.lang.String)(https://developer.android.com/reference/java/lang/StringBuilder.html builder, https://developer.android.com/reference/java/lang/String.html name, https://developer.android.com/reference/java/lang/String.html value)` | | `https://developer.android.com/reference/java/lang/String.html` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Keys#unpack(java.lang.String[])(String[] str)` | |

## Protected fields

### TYPE

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

```
protected String TYPE
```

## Public constructors

### KeyAttribute

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

```
public KeyAttribute(int frame, String target)
```

## Public methods

### getAlpha

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

```
public float getAlpha()
```

### getCurveFit

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

```
public KeyAttribute.Fit getCurveFit()
```

### getPivotX

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

```
public float getPivotX()
```

### getPivotY

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

```
public float getPivotY()
```

### getRotation

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

```
public float getRotation()
```

### getRotationX

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

```
public float getRotationX()
```

### getRotationY

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

```
public float getRotationY()
```

### getScaleX

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

```
public float getScaleX()
```

### getScaleY

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

```
public float getScaleY()
```

### getTarget

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

```
public String getTarget()
```

### getTransitionEasing

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

```
public String getTransitionEasing()
```

### getTransitionPathRotate

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

```
public float getTransitionPathRotate()
```

### getTranslationX

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

```
public float getTranslationX()
```

### getTranslationY

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

```
public float getTranslationY()
```

### getTranslationZ

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

```
public float getTranslationZ()
```

### getVisibility

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

```
public KeyAttribute.Visibility getVisibility()
```

### setAlpha

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

```
public void setAlpha(float alpha)
```

### setCurveFit

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

```
public void setCurveFit(KeyAttribute.Fit curveFit)
```

### setPivotX

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

```
public void setPivotX(float pivotX)
```

### setPivotY

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

```
public void setPivotY(float pivotY)
```

### setRotation

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

```
public void setRotation(float rotation)
```

### setRotationX

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

```
public void setRotationX(float rotationX)
```

### setRotationY

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

```
public void setRotationY(float rotationY)
```

### setScaleX

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

```
public void setScaleX(float scaleX)
```

### setScaleY

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

```
public void setScaleY(float scaleY)
```

### setTarget

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

```
public void setTarget(String target)
```

### setTransitionEasing

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

```
public void setTransitionEasing(String transitionEasing)
```

### setTransitionPathRotate

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

```
public void setTransitionPathRotate(float transitionPathRotate)
```

### setTranslationX

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

```
public void setTranslationX(float translationX)
```

### setTranslationY

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

```
public void setTranslationY(float translationY)
```

### setTranslationZ

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

```
public void setTranslationZ(float translationZ)
```

### setVisibility

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

```
public void setVisibility(KeyAttribute.Visibility visibility)
```

### toString

```
public String toString()
```

## Protected methods

### attributesToString

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

```
protected void attributesToString(StringBuilder builder)
```