# GuidelineReference

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

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```
public class GuidelineReference implements Facade, Reference
```

<br />

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## Summary

| ### Public constructors |
|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/state/helpers/GuidelineReference#GuidelineReference(androidx.constraintlayout.core.state.State)(https://developer.android.com/reference/androidx/constraintlayout/core/state/State state)` |

| ### Public methods |
|---|---|
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/state/helpers/GuidelineReference#apply()()` |
| `https://developer.android.com/reference/androidx/constraintlayout/core/state/helpers/GuidelineReference` | `https://developer.android.com/reference/androidx/constraintlayout/core/state/helpers/GuidelineReference#end(java.lang.Object)(https://developer.android.com/reference/java/lang/Object.html margin)` |
| `https://developer.android.com/reference/androidx/constraintlayout/core/widgets/ConstraintWidget` | `https://developer.android.com/reference/androidx/constraintlayout/core/state/helpers/GuidelineReference#getConstraintWidget()()` |
| `https://developer.android.com/reference/androidx/constraintlayout/core/state/helpers/Facade` | `https://developer.android.com/reference/androidx/constraintlayout/core/state/helpers/GuidelineReference#getFacade()()` |
| `https://developer.android.com/reference/java/lang/Object.html` | `https://developer.android.com/reference/androidx/constraintlayout/core/state/helpers/GuidelineReference#getKey()()` |
| `int` | `https://developer.android.com/reference/androidx/constraintlayout/core/state/helpers/GuidelineReference#getOrientation()()` |
| `https://developer.android.com/reference/androidx/constraintlayout/core/state/helpers/GuidelineReference` | `https://developer.android.com/reference/androidx/constraintlayout/core/state/helpers/GuidelineReference#percent(float)(float percent)` |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/state/helpers/GuidelineReference#setConstraintWidget(androidx.constraintlayout.core.widgets.ConstraintWidget)(https://developer.android.com/reference/androidx/constraintlayout/core/widgets/ConstraintWidget widget)` |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/state/helpers/GuidelineReference#setKey(java.lang.Object)(https://developer.android.com/reference/java/lang/Object.html key)` |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/state/helpers/GuidelineReference#setOrientation(int)(int orientation)` |
| `https://developer.android.com/reference/androidx/constraintlayout/core/state/helpers/GuidelineReference` | `https://developer.android.com/reference/androidx/constraintlayout/core/state/helpers/GuidelineReference#start(java.lang.Object)(https://developer.android.com/reference/java/lang/Object.html margin)` |

## Public constructors

### GuidelineReference

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

```
public GuidelineReference(State state)
```

## Public methods

### apply

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

```
public void apply()
```

### end

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

```
public GuidelineReference end(Object margin)
```

### getConstraintWidget

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

```
public ConstraintWidget getConstraintWidget()
```

### getFacade

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

```
public Facade getFacade()
```

### getKey

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

```
public Object getKey()
```

### getOrientation

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

```
public int getOrientation()
```

### percent

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

```
public GuidelineReference percent(float percent)
```

### setConstraintWidget

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

```
public void setConstraintWidget(ConstraintWidget widget)
```

### setKey

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

```
public void setKey(Object key)
```

### setOrientation

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

```
public void setOrientation(int orientation)
```

### start

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

```
public GuidelineReference start(Object margin)
```