# VChain

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

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```
public class VChain extends Chain
```

<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.Chain](https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Chain) ||
|   |   | ↳ | [androidx.constraintlayout.core.dsl.VChain](https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain) |

*** ** * ** ***

## Summary

| ### Nested types |
|---|
| `public inner class https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain.VAnchor extends https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Chain.Anchor` |

| ### Public constructors |
|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain#VChain(java.lang.String)(https://developer.android.com/reference/java/lang/String.html name)` |
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain#VChain(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/VChain.VAnchor` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain#getBaseline()()` Get the baseline anchor |
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain.VAnchor` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain#getBottom()()` Get the bottom anchor |
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain.VAnchor` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain#getTop()()` Get the top anchor |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain#linkToBaseline(androidx.constraintlayout.core.dsl.Constraint.VAnchor)(https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.VAnchor anchor)` Connect anchor to Baseline |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain#linkToBaseline(androidx.constraintlayout.core.dsl.Constraint.VAnchor,int)(https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.VAnchor anchor, int margin)` Connect anchor to Baseline |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain#linkToBaseline(androidx.constraintlayout.core.dsl.Constraint.VAnchor,int,int)(https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.VAnchor anchor, int margin, int goneMargin)` Connect anchor to Baseline |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain#linkToBottom(androidx.constraintlayout.core.dsl.Constraint.VAnchor)(https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.VAnchor anchor)` Connect anchor to Bottom |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain#linkToBottom(androidx.constraintlayout.core.dsl.Constraint.VAnchor,int)(https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.VAnchor anchor, int margin)` Connect anchor to Bottom |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain#linkToBottom(androidx.constraintlayout.core.dsl.Constraint.VAnchor,int,int)(https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.VAnchor anchor, int margin, int goneMargin)` Connect anchor to Bottom |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain#linkToTop(androidx.constraintlayout.core.dsl.Constraint.VAnchor)(https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.VAnchor anchor)` Connect anchor to Top |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain#linkToTop(androidx.constraintlayout.core.dsl.Constraint.VAnchor,int)(https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.VAnchor anchor, int margin)` Connect anchor to Top |
| `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain#linkToTop(androidx.constraintlayout.core.dsl.Constraint.VAnchor,int,int)(https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.VAnchor anchor, int margin, int goneMargin)` Connect anchor to Top |

| ### Inherited Constants |
|---|
| From [androidx.constraintlayout.core.dsl.Chain](https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Chain) |---|---| | `static final https://developer.android.com/reference/java/util/Map.html<https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Chain.Style, https://developer.android.com/reference/java/lang/String.html>` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Chain#styleMap()` | |
| 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.Chain](https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Chain) |---|---| | `https://developer.android.com/reference/java/util/ArrayList.html<https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Ref>` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Chain#references()` | |
| 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.Chain](https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Chain) |---|---| | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Chain` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Chain#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/Chain` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Chain#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/Chain.Style` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Chain#getStyle()()` | | `https://developer.android.com/reference/java/lang/String.html` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Chain#referencesToString()()` convert references to a String representation | | `void` | `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Chain#setStyle(androidx.constraintlayout.core.dsl.Chain.Style)(https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Chain.Style style)` | |
| 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

### VChain

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

```
public VChain(String name)
```

### VChain

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

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

## Public methods

### getBaseline

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

```
public VChain.VAnchor getBaseline()
```

Get the baseline anchor

| Returns |
|---|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain.VAnchor` | the baseline anchor |

### getBottom

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

```
public VChain.VAnchor getBottom()
```

Get the bottom anchor

| Returns |
|---|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain.VAnchor` | the bottom anchor |

### getTop

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

```
public VChain.VAnchor getTop()
```

Get the top anchor

| Returns |
|---|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/VChain.VAnchor` | the top anchor |

### linkToBaseline

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

```
public void linkToBaseline(Constraint.VAnchor anchor)
```

Connect anchor to Baseline

| Parameters |
|---|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.VAnchor anchor` | anchor to be connected |

### linkToBaseline

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

```
public void linkToBaseline(Constraint.VAnchor anchor, int margin)
```

Connect anchor to Baseline

| Parameters |
|---|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.VAnchor anchor` | anchor to be connected |
| `int margin` | value of the margin |

### linkToBaseline

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

```
public void linkToBaseline(Constraint.VAnchor anchor, int margin, int goneMargin)
```

Connect anchor to Baseline

| Parameters |
|---|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.VAnchor anchor` | anchor to be connected |
| `int margin` | value of the margin |
| `int goneMargin` | value of the goneMargin |

### linkToBottom

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

```
public void linkToBottom(Constraint.VAnchor anchor)
```

Connect anchor to Bottom

| Parameters |
|---|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.VAnchor anchor` | anchor to be connected |

### linkToBottom

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

```
public void linkToBottom(Constraint.VAnchor anchor, int margin)
```

Connect anchor to Bottom

| Parameters |
|---|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.VAnchor anchor` | anchor to be connected |
| `int margin` | value of the margin |

### linkToBottom

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

```
public void linkToBottom(Constraint.VAnchor anchor, int margin, int goneMargin)
```

Connect anchor to Bottom

| Parameters |
|---|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.VAnchor anchor` | anchor to be connected |
| `int margin` | value of the margin |
| `int goneMargin` | value of the goneMargin |

### linkToTop

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

```
public void linkToTop(Constraint.VAnchor anchor)
```

Connect anchor to Top

| Parameters |
|---|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.VAnchor anchor` | anchor to be connected |

### linkToTop

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

```
public void linkToTop(Constraint.VAnchor anchor, int margin)
```

Connect anchor to Top

| Parameters |
|---|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.VAnchor anchor` | anchor to be connected |
| `int margin` | value of the margin |

### linkToTop

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

```
public void linkToTop(Constraint.VAnchor anchor, int margin, int goneMargin)
```

Connect anchor to Top

| Parameters |
|---|---|
| `https://developer.android.com/reference/androidx/constraintlayout/core/dsl/Constraint.VAnchor anchor` | anchor to be connected |
| `int margin` | value of the margin |
| `int goneMargin` | value of the goneMargin |