# Barrier

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

*** ** * ** ***


```
public class Barrier extends Helper
```

<br />

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

*** ** * ** ***

## Summary

| ### Public constructors |
|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Barrier#Barrier(java.lang.String)(https://developer.android.com/reference/java/lang/String.html name)` |
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Barrier#Barrier(java.lang.String,java.lang.String)(https://developer.android.com/reference/java/lang/String.html name, https://developer.android.com/reference/java/lang/String.html config)` |

| ### Public methods |
|---|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Barrier` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Barrier#addReference(androidx.constraintlayout.core.dsl.Ref)(https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Ref ref)` Add a new reference |
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Barrier` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Barrier#addReference(java.lang.String)(https://developer.android.com/reference/java/lang/String.html ref)` Add a new reference |
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.Side` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Barrier#getDirection()()` Get the direction of the Barrier |
| `int` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Barrier#getMargin()()` Get the margin of the Barrier |
| `https://developer.android.com/reference/java/lang/String.html` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Barrier#referencesToString()()` Convert references into a String representation |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Barrier#setDirection(androidx.constraintlayout.core.dsl.Constraint.Side)(https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.Side direction)` Set the direction of the Barrier |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Barrier#setMargin(int)(int margin)` Set the margin of the Barrier |

| ### Inherited Constants |
|---|
| From [androidx.constraintlayout.core.dsl.Helper](https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Helper) |---|---| | `static final https://developer.android.com/reference/java/util/Map.html<https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.Side, https://developer.android.com/reference/java/lang/String.html>` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Helper#sideMap()` | | `static final https://developer.android.com/reference/java/util/Map.html<https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Helper.Type, https://developer.android.com/reference/java/lang/String.html>` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Helper#typeMap()` | |

| ### Inherited fields |
|---|
| From [androidx.constraintlayout.core.dsl.Helper](https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Helper) |---|---| | `https://developer.android.com/reference/java/lang/String.html` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Helper#config()` | | `https://developer.android.com/reference/java/util/Map.html<https://developer.android.com/reference/java/lang/String.html, https://developer.android.com/reference/java/lang/String.html>` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Helper#configMap()` | | `final https://developer.android.com/reference/java/lang/String.html` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Helper#name()` | | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Helper.HelperType` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Helper#type()` | |

| ### Inherited methods |
|---|
| From [androidx.constraintlayout.core.dsl.Helper](https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Helper) |---|---| | `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Helper#append(java.util.Map<java.lang.String,java.lang.String>,java.lang.StringBuilder)(https://developer.android.com/reference/java/util/Map.html<https://developer.android.com/reference/java/lang/String.html, https://developer.android.com/reference/java/lang/String.html> map, https://developer.android.com/reference/java/lang/StringBuilder.html ret)` | | `https://developer.android.com/reference/java/util/Map.html<https://developer.android.com/reference/java/lang/String.html, https://developer.android.com/reference/java/lang/String.html>` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Helper#convertConfigToMap()()` | | `https://developer.android.com/reference/java/lang/String.html` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Helper#getConfig()()` | | `https://developer.android.com/reference/java/lang/String.html` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Helper#getId()()` | | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Helper.HelperType` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Helper#getType()()` | | `static void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Helper#main(java.lang.String[])(String[] args)` | | `https://developer.android.com/reference/java/lang/String.html` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Helper#toString()()` | |

## Public constructors

### Barrier

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

```
public Barrier(String name)
```

### Barrier

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

```
public Barrier(String name, String config)
```

## Public methods

### addReference

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

```
public Barrier addReference(Ref ref)
```

Add a new reference

| Parameters |
|---|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Ref ref` | reference |

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

### addReference

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

```
public Barrier addReference(String ref)
```

Add a new reference

| Parameters |
|---|---|
| `https://developer.android.com/reference/java/lang/String.html ref` | reference in a String representation |

| Returns |
|---|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Barrier` | Chain |

### getDirection

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

```
public Constraint.Side getDirection()
```

Get the direction of the Barrier

| Returns |
|---|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.Side` | direction |

### getMargin

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

```
public int getMargin()
```

Get the margin of the Barrier

| Returns |
|---|---|
| `int` | margin |

### referencesToString

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

```
public String referencesToString()
```

Convert references into a String representation

| Returns |
|---|---|
| `https://developer.android.com/reference/java/lang/String.html` | a String representation of references |

### setDirection

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

```
public void setDirection(Constraint.Side direction)
```

Set the direction of the Barrier

| Parameters |
|---|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.Side direction` |   |

### setMargin

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

```
public void setMargin(int margin)
```

Set the margin of the Barrier

| Parameters |
|---|---|
| `int margin` |   |