# ConstraintProperties
Summary:[Constants](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#constants)\|[Fields](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#lfields)\|[Ctors](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#pubctors)\|[Methods](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#pubmethods)\|[Inherited Methods](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#inhmethods)
# ConstraintProperties
| This package is part of the Android[support library](https://developer.android.com/topic/libraries/support-library)which is no longer maintained. The Constraint Layout support library has been superseded by the[AndroidX Constraint Layout library](https://developer.android.com/reference/androidx/constraintlayout/classes), which is part of[Jetpack](https://developer.android.com/jetpack). The`ConstraintProperties`class has been superseded by[`androidx.constraintlayout.widget.ConstraintProperties`](https://developer.android.com/reference/androidx/constraintlayout/widget/ConstraintProperties). We recommend using the AndroidX libraries in all new projects. You should also consider[migrating](https://developer.android.com/jetpack/androidx/migrate)existing projects to AndroidX.
`
public
class
ConstraintProperties
`
`
extends Object
``
`
|---|-------------------------------------------------|
| java.lang.Object ||
| ↳ | android.support.constraint.ConstraintProperties |
*** ** * ** ***
**Added in 2.0**
ConstraintProperties provides an easy to use api to update the layout params of[ConstraintLayout](https://developer.android.com/reference/android/support/constraint/ConstraintLayout)children
## Summary
| ### Constants ||
|-------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `int` | [BASELINE](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#BASELINE) The baseline of the text in a view. |
| `int` | [BOTTOM](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#BOTTOM) The bottom side of a view. |
| `int` | [END](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#END) The right side of a view in right to left languages. |
| `int` | [LEFT](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#LEFT) The left side of a view. |
| `int` | [MATCH_CONSTRAINT](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#MATCH_CONSTRAINT) Dimension will be controlled by constraints |
| `int` | [PARENT_ID](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#PARENT_ID) References the id of the parent. |
| `int` | [RIGHT](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#RIGHT) The right side of a view. |
| `int` | [START](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#START) The left side of a view in left to right languages. |
| `int` | [TOP](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#TOP) The top of a view. |
| `int` | [UNSET](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#UNSET) Used to indicate a parameter is cleared or not set |
| ### Fields ||
|----------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| ` public static final int` | [MATCH_CONSTRAINT_SPREAD](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#MATCH_CONSTRAINT_SPREAD) Calculate the size of a view in 0 dp by reducing the constrains gaps as much as possible |
| ` public static final int` | [MATCH_CONSTRAINT_WRAP](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#MATCH_CONSTRAINT_WRAP) How to calculate the size of a view in 0 dp by using its wrap_content size |
| ` public static final int` | [WRAP_CONTENT](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#WRAP_CONTENT) Dimension will set by the view's content |
| ### Public constructors ||
|-------------------------------------------------------------------------------------------------------------------------------------------------------------|---|
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#ConstraintProperties(View))`(View view) ` |
| ### Public methods ||
|--------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[addToHorizontalChain](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#addToHorizontalChain(int,%20int))`(int leftId, int rightId) ` Adds the view to a horizontal chain. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[addToHorizontalChainRTL](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#addToHorizontalChainRTL(int,%20int))`(int leftId, int rightId) ` Adds the view to a horizontal chain using RTL attributes. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[addToVerticalChain](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#addToVerticalChain(int,%20int))`(int topId, int bottomId) ` Adds a view to a vertical chain. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[alpha](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#alpha(float))`(float alpha) ` Adjust the alpha of a view. |
| ` void` | ` `[apply](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#apply())`() ` |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[center](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#center(int,%20int,%20int,%20int,%20int,%20int,%20float))`(int firstID, int firstSide, int firstMargin, int secondId, int secondSide, int secondMargin, float bias) ` Center view between the other two widgets. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[centerHorizontally](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#centerHorizontally(int))`(int toView) ` Centers the view horizontally relative to toView's position. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[centerHorizontally](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#centerHorizontally(int,%20int,%20int,%20int,%20int,%20int,%20float))`(int leftId, int leftSide, int leftMargin, int rightId, int rightSide, int rightMargin, float bias) ` Centers the widget horizontally to the left and right side on another widgets sides. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[centerHorizontallyRtl](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#centerHorizontallyRtl(int))`(int toView) ` Centers the view horizontally relative to toView's position. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[centerHorizontallyRtl](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#centerHorizontallyRtl(int,%20int,%20int,%20int,%20int,%20int,%20float))`(int startId, int startSide, int startMargin, int endId, int endSide, int endMargin, float bias) ` Centers the widgets horizontally to the left and right side on another widgets sides. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[centerVertically](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#centerVertically(int,%20int,%20int,%20int,%20int,%20int,%20float))`(int topId, int topSide, int topMargin, int bottomId, int bottomSide, int bottomMargin, float bias) ` Centers the widgets Vertically to the top and bottom side on another widgets sides. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[centerVertically](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#centerVertically(int))`(int toView) ` Centers the view vertically relative to toView's position. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[connect](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#connect(int,%20int,%20int,%20int))`(int startSide, int endID, int endSide, int margin) ` Create a constraint between two widgets. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[constrainDefaultHeight](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#constrainDefaultHeight(int))`(int height) ` Sets how the height is calculated ether MATCH_CONSTRAINT_WRAP or MATCH_CONSTRAINT_SPREAD. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[constrainDefaultWidth](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#constrainDefaultWidth(int))`(int width) ` Sets how the width is calculated ether MATCH_CONSTRAINT_WRAP or MATCH_CONSTRAINT_SPREAD. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[constrainHeight](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#constrainHeight(int))`(int height) ` Sets the height of the view. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[constrainMaxHeight](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#constrainMaxHeight(int))`(int height) ` Sets the maximum height of the view. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[constrainMaxWidth](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#constrainMaxWidth(int))`(int width) ` Sets the maximum width of the view. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[constrainMinHeight](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#constrainMinHeight(int))`(int height) ` Sets the minimum height of the view. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[constrainMinWidth](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#constrainMinWidth(int))`(int width) ` Sets the minimum width of the view. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[constrainWidth](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#constrainWidth(int))`(int width) ` Sets the width of the view. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[dimensionRatio](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#dimensionRatio(java.lang.String))`(String ratio) ` Constrains the views aspect ratio. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[elevation](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#elevation(float))`(float elevation) ` Set the elevation of a view. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[goneMargin](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#goneMargin(int,%20int))`(int anchor, int value) ` Sets the gone margin. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[horizontalBias](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#horizontalBias(float))`(float bias) ` Adjust the horizontal bias of the view (used with views constrained on left and right). |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[horizontalChainStyle](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#horizontalChainStyle(int))`(int chainStyle) ` How the elements of the horizontal chain will be positioned. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[horizontalWeight](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#horizontalWeight(float))`(float weight) ` The child's weight that we can use to distribute the available horizontal space in a chain, if the dimension behaviour is set to MATCH_CONSTRAINT |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[margin](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#margin(int,%20int))`(int anchor, int value) ` Sets the margin. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[removeConstraints](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#removeConstraints(int))`(int anchor) ` Remove a constraint from this view. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[removeFromHorizontalChain](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#removeFromHorizontalChain())`() ` Removes a view from a vertical chain. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[removeFromVerticalChain](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#removeFromVerticalChain())`() ` Removes a view from a vertical chain. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[rotation](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#rotation(float))`(float rotation) ` Adjust the post-layout rotation about the Z axis of a view. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[rotationX](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#rotationX(float))`(float rotationX) ` Adjust the post-layout rotation about the X axis of a view. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[rotationY](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#rotationY(float))`(float rotationY) ` Adjust the post-layout rotation about the Y axis of a view. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[scaleX](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#scaleX(float))`(float scaleX) ` Adjust the post-layout scale in X of a view. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[scaleY](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#scaleY(float))`(float scaleY) ` Adjust the post-layout scale in Y of a view. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[transformPivot](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#transformPivot(float,%20float))`(float transformPivotX, float transformPivotY) ` Set X and Y location of the pivot point around which the view will rotate and scale. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[transformPivotX](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#transformPivotX(float))`(float transformPivotX) ` Set X location of the pivot point around which the view will rotate and scale. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[transformPivotY](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#transformPivotY(float))`(float transformPivotY) ` Set Y location of the pivot point around which the view will rotate and scale. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[translation](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#translation(float,%20float))`(float translationX, float translationY) ` Adjust the post-layout X and Y translation of a view. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[translationX](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#translationX(float))`(float translationX) ` Adjust the post-layout X translation of a view. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[translationY](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#translationY(float))`(float translationY) ` Adjust the post-layout Y translation of a view. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[translationZ](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#translationZ(float))`(float translationZ) ` Adjust the post-layout translation in Z of a view. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[verticalBias](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#verticalBias(float))`(float bias) ` Adjust the vertical bias of the view (used with views constrained on left and right). |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[verticalChainStyle](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#verticalChainStyle(int))`(int chainStyle) ` How the elements of the vertical chain will be positioned. |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[verticalWeight](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#verticalWeight(float))`(float weight) ` The child's weight that we can use to distribute the available vertical space in a chain, if the dimension behaviour is set to MATCH_CONSTRAINT |
| ` `[ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | ` `[visibility](https://developer.android.com/reference/android/support/constraint/ConstraintProperties#visibility(int))`(int visibility) ` Adjust the visibility of a view. |
| ### Inherited methods |
|-----------------------|---|
| From class` java.lang.Object ` |-------------------|-------------------------------| | ` Object` | ` clone() ` | | ` boolean` | ` equals(Object arg0) ` | | ` void` | ` finalize() ` | | ` final Class` | ` getClass() ` | | ` int` | ` hashCode() ` | | ` final void` | ` notify() ` | | ` final void` | ` notifyAll() ` | | ` String` | ` toString() ` | | ` final void` | ` wait(long arg0, int arg1) ` | | ` final void` | ` wait(long arg0) ` | | ` final void` | ` wait() ` | ||
## Constants
### BASELINE
```
public static final int BASELINE
```
The baseline of the text in a view.
Constant Value: 5 (0x00000005)
### BOTTOM
```
public static final int BOTTOM
```
The bottom side of a view.
Constant Value: 4 (0x00000004)
### END
```
public static final int END
```
The right side of a view in right to left languages. In right to left languages it corresponds to the left side of the view
Constant Value: 7 (0x00000007)
### LEFT
```
public static final int LEFT
```
The left side of a view.
Constant Value: 1 (0x00000001)
### MATCH_CONSTRAINT
```
public static final int MATCH_CONSTRAINT
```
Dimension will be controlled by constraints
Constant Value: 0 (0x00000000)
### PARENT_ID
```
public static final int PARENT_ID
```
References the id of the parent.
Constant Value: 0 (0x00000000)
### RIGHT
```
public static final int RIGHT
```
The right side of a view.
Constant Value: 2 (0x00000002)
### START
```
public static final int START
```
The left side of a view in left to right languages. In right to left languages it corresponds to the right side of the view
Constant Value: 6 (0x00000006)
### TOP
```
public static final int TOP
```
The top of a view.
Constant Value: 3 (0x00000003)
### UNSET
```
public static final int UNSET
```
Used to indicate a parameter is cleared or not set
Constant Value: -1 (0xffffffff)
## Fields
### MATCH_CONSTRAINT_SPREAD
```
public static final int MATCH_CONSTRAINT_SPREAD
```
Calculate the size of a view in 0 dp by reducing the constrains gaps as much as possible
### MATCH_CONSTRAINT_WRAP
```
public static final int MATCH_CONSTRAINT_WRAP
```
How to calculate the size of a view in 0 dp by using its wrap_content size
### WRAP_CONTENT
```
public static final int WRAP_CONTENT
```
Dimension will set by the view's content
## Public constructors
### ConstraintProperties
```
public ConstraintProperties (View view)
```
| Parameters ||
|--------|---------------|
| `view` | `View`
|
## Public methods
### addToHorizontalChain
```
public ConstraintProperties addToHorizontalChain (int leftId,
int rightId)
```
Adds the view to a horizontal chain.
| Parameters ||
|-----------|----------------------------------------------------|
| `leftId` | `int`: id of the view in chain to the left
|
| `rightId` | `int`: id of the view in chain to the right
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### addToHorizontalChainRTL
```
public ConstraintProperties addToHorizontalChainRTL (int leftId,
int rightId)
```
Adds the view to a horizontal chain using RTL attributes.
| Parameters ||
|-----------|----------------------------------------------------|
| `leftId` | `int`: id of the view in chain to the left
|
| `rightId` | `int`: id of the view in chain to the right
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### addToVerticalChain
```
public ConstraintProperties addToVerticalChain (int topId,
int bottomId)
```
Adds a view to a vertical chain.
| Parameters ||
|------------|---------------------------|
| `topId` | `int`: view above.
|
| `bottomId` | `int`: view below
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### alpha
```
public ConstraintProperties alpha (float alpha)
```
Adjust the alpha of a view.
| Parameters ||
|---------|---------------------------|
| `alpha` | `float`: the alpha
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### apply
```
public void apply ()
```
### center
```
public ConstraintProperties center (int firstID,
int firstSide,
int firstMargin,
int secondId,
int secondSide,
int secondMargin,
float bias)
```
Center view between the other two widgets.
| Parameters ||
|----------------|---------------------------------------------------------------------------------------|
| `firstID` | `int`: ID of the first widget to connect the left or top of the widget to
|
| `firstSide` | `int`: the side of the widget to connect to
|
| `firstMargin` | `int`: the connection margin
|
| `secondId` | `int`: the ID of the second widget to connect to right or top of the widget to
|
| `secondSide` | `int`: the side of the widget to connect to
|
| `secondMargin` | `int`: the connection margin
|
| `bias` | `float`: the ratio between two connections
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### centerHorizontally
```
public ConstraintProperties centerHorizontally (int toView)
```
Centers the view horizontally relative to toView's position.
| Parameters ||
|----------|-----------------------------------------------|
| `toView` | `int`: ID of view to center on (or in)
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### centerHorizontally
```
public ConstraintProperties centerHorizontally (int leftId,
int leftSide,
int leftMargin,
int rightId,
int rightSide,
int rightMargin,
float bias)
```
Centers the widget horizontally to the left and right side on another widgets sides.
| Parameters ||
|---------------|----------------------------------------------------------------------------------------------|
| `leftId` | `int`: The Id of the widget on the left side
|
| `leftSide` | `int`: The side of the leftId widget to connect to
|
| `leftMargin` | `int`: The margin on the left side
|
| `rightId` | `int`: The Id of the widget on the right side
|
| `rightSide` | `int`: The side of the rightId widget to connect to
|
| `rightMargin` | `int`: The margin on the right side
|
| `bias` | `float`: The ratio of the space on the left vs. right sides 0.5 is centered (default)
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### centerHorizontallyRtl
```
public ConstraintProperties centerHorizontallyRtl (int toView)
```
Centers the view horizontally relative to toView's position.
| Parameters ||
|----------|-----------------------------------------------|
| `toView` | `int`: ID of view to center on (or in)
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### centerHorizontallyRtl
```
public ConstraintProperties centerHorizontallyRtl (int startId,
int startSide,
int startMargin,
int endId,
int endSide,
int endMargin,
float bias)
```
Centers the widgets horizontally to the left and right side on another widgets sides.
| Parameters ||
|---------------|-------------------------------------------------------------------------------------------|
| `startId` | `int`: The Id of the widget on the start side (left in non rtl languages)
|
| `startSide` | `int`: The side of the startId widget to connect to
|
| `startMargin` | `int`: The margin on the start side
|
| `endId` | `int`: The Id of the widget on the start side (left in non rtl languages)
|
| `endSide` | `int`: The side of the endId widget to connect to
|
| `endMargin` | `int`: The margin on the end side
|
| `bias` | `float`: The ratio of the space on the start vs end side 0.5 is centered (default)
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### centerVertically
```
public ConstraintProperties centerVertically (int topId,
int topSide,
int topMargin,
int bottomId,
int bottomSide,
int bottomMargin,
float bias)
```
Centers the widgets Vertically to the top and bottom side on another widgets sides.
| Parameters ||
|----------------|----------------------------------------------------------------------------------------------|
| `topId` | `int`: The Id of the widget on the top side
|
| `topSide` | `int`: The side of the leftId widget to connect to
|
| `topMargin` | `int`: The margin on the top side
|
| `bottomId` | `int`: The Id of the widget on the bottom side
|
| `bottomSide` | `int`: The side of the bottomId widget to connect to
|
| `bottomMargin` | `int`: The margin on the bottom side
|
| `bias` | `float`: The ratio of the space on the top vs. bottom sides 0.5 is centered (default)
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### centerVertically
```
public ConstraintProperties centerVertically (int toView)
```
Centers the view vertically relative to toView's position.
| Parameters ||
|----------|-----------------------------------------------|
| `toView` | `int`: ID of view to center on (or in)
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### connect
```
public ConstraintProperties connect (int startSide,
int endID,
int endSide,
int margin)
```
Create a constraint between two widgets.
| Parameters ||
|-------------|-----------------------------------------------------------------|
| `startSide` | `int`: the side of the widget to constrain
|
| `endID` | `int`: the id of the widget to constrain to
|
| `endSide` | `int`: the side of widget to constrain to
|
| `margin` | `int`: the margin to constrain (margin must be positive)
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|--------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) |
|
### constrainDefaultHeight
```
public ConstraintProperties constrainDefaultHeight (int height)
```
Sets how the height is calculated ether MATCH_CONSTRAINT_WRAP or MATCH_CONSTRAINT_SPREAD. Default is spread.
| Parameters ||
|----------|----------------------------------------------------------------|
| `height` | `int`: MATCH_CONSTRAINT_WRAP or MATCH_CONSTRAINT_SPREAD
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### constrainDefaultWidth
```
public ConstraintProperties constrainDefaultWidth (int width)
```
Sets how the width is calculated ether MATCH_CONSTRAINT_WRAP or MATCH_CONSTRAINT_SPREAD. Default is spread.
| Parameters ||
|---------|----------------------------------------------------------------|
| `width` | `int`: MATCH_CONSTRAINT_WRAP or MATCH_CONSTRAINT_SPREAD
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### constrainHeight
```
public ConstraintProperties constrainHeight (int height)
```
Sets the height of the view.
| Parameters ||
|----------|--------------------------------------|
| `height` | `int`: the height of the view
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### constrainMaxHeight
```
public ConstraintProperties constrainMaxHeight (int height)
```
Sets the maximum height of the view. It is a dimension, It is only applicable if height is #MATCH_CONSTRAINT}.
| Parameters ||
|----------|----------------------------------------------|
| `height` | `int`: the maximum height of the view
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### constrainMaxWidth
```
public ConstraintProperties constrainMaxWidth (int width)
```
Sets the maximum width of the view. It is a dimension, It is only applicable if height is #MATCH_CONSTRAINT}.
| Parameters ||
|---------|---------------------------------------------|
| `width` | `int`: the maximum width of the view
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### constrainMinHeight
```
public ConstraintProperties constrainMinHeight (int height)
```
Sets the minimum height of the view. It is a dimension, It is only applicable if height is #MATCH_CONSTRAINT}.
| Parameters ||
|----------|----------------------------------------------|
| `height` | `int`: the minimum height of the view
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### constrainMinWidth
```
public ConstraintProperties constrainMinWidth (int width)
```
Sets the minimum width of the view. It is a dimension, It is only applicable if height is #MATCH_CONSTRAINT}.
| Parameters ||
|---------|---------------------------------------------|
| `width` | `int`: the minimum width of the view
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### constrainWidth
```
public ConstraintProperties constrainWidth (int width)
```
Sets the width of the view.
| Parameters ||
|---------|-------------------------------------|
| `width` | `int`: the width of the view
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### dimensionRatio
```
public ConstraintProperties dimensionRatio (String ratio)
```
Constrains the views aspect ratio. For Example a HD screen is 16 by 9 = 16/(float)9 = 1.777f.
| Parameters ||
|---------|--------------------------------------------------------------------|
| `ratio` | `String`: The ratio of the width to height (width / height)
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### elevation
```
public ConstraintProperties elevation (float elevation)
```
Set the elevation of a view.
| Parameters ||
|-------------|-------------------------------|
| `elevation` | `float`: the elevation
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### goneMargin
```
public ConstraintProperties goneMargin (int anchor,
int value)
```
Sets the gone margin.
| Parameters ||
|----------|------------------------------------------------|
| `anchor` | `int`: The side to adjust the margin on
|
| `value` | `int`: The new value for the margin
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### horizontalBias
```
public ConstraintProperties horizontalBias (float bias)
```
Adjust the horizontal bias of the view (used with views constrained on left and right).
| Parameters ||
|--------|---------------------------------------------------|
| `bias` | `float`: the new bias 0.5 is in the middle
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### horizontalChainStyle
```
public ConstraintProperties horizontalChainStyle (int chainStyle)
```
How the elements of the horizontal chain will be positioned. If the dimension behaviour is set to MATCH_CONSTRAINT. The possible values are:
- CHAIN_SPREAD -- the elements will be spread out
- CHAIN_SPREAD_INSIDE -- similar, but the endpoints of the chain will not be spread out
- CHAIN_PACKED -- the elements of the chain will be packed together. The horizontal bias attribute of the child will then affect the positioning of the packed elements
| Parameters ||
|--------------|-----------------------------------------------------------------------------|
| `chainStyle` | `int`: the weight that we can use to distribute the horizontal space
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### horizontalWeight
```
public ConstraintProperties horizontalWeight (float weight)
```
The child's weight that we can use to distribute the available horizontal space in a chain, if the dimension behaviour is set to MATCH_CONSTRAINT
| Parameters ||
|----------|-------------------------------------------------------------------------------|
| `weight` | `float`: the weight that we can use to distribute the horizontal space
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### margin
```
public ConstraintProperties margin (int anchor,
int value)
```
Sets the margin.
| Parameters ||
|----------|------------------------------------------------|
| `anchor` | `int`: The side to adjust the margin on
|
| `value` | `int`: The new value for the margin
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### removeConstraints
```
public ConstraintProperties removeConstraints (int anchor)
```
Remove a constraint from this view.
| Parameters ||
|----------|----------------------------------------------------|
| `anchor` | `int`: the Anchor to remove constraint from
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### removeFromHorizontalChain
```
public ConstraintProperties removeFromHorizontalChain ()
```
Removes a view from a vertical chain. This assumes the view is connected to a vertical chain. Its behaviour is undefined if not part of a vertical chain.
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### removeFromVerticalChain
```
public ConstraintProperties removeFromVerticalChain ()
```
Removes a view from a vertical chain. This assumes the view is connected to a vertical chain. Its behaviour is undefined if not part of a vertical chain.
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### rotation
```
public ConstraintProperties rotation (float rotation)
```
Adjust the post-layout rotation about the Z axis of a view.
| Parameters ||
|------------|-----------------------------------------------|
| `rotation` | `float`: the rotation about the Z axis
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### rotationX
```
public ConstraintProperties rotationX (float rotationX)
```
Adjust the post-layout rotation about the X axis of a view.
| Parameters ||
|-------------|-----------------------------------------------|
| `rotationX` | `float`: the rotation about the X axis
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### rotationY
```
public ConstraintProperties rotationY (float rotationY)
```
Adjust the post-layout rotation about the Y axis of a view.
| Parameters ||
|-------------|-----------------------------------------------|
| `rotationY` | `float`: the rotation about the Y axis
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### scaleX
```
public ConstraintProperties scaleX (float scaleX)
```
Adjust the post-layout scale in X of a view.
| Parameters ||
|----------|--------------------------------|
| `scaleX` | `float`: the scale in X
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### scaleY
```
public ConstraintProperties scaleY (float scaleY)
```
Adjust the post-layout scale in Y of a view.
| Parameters ||
|----------|--------------------------------|
| `scaleY` | `float`: the scale in Y
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### transformPivot
```
public ConstraintProperties transformPivot (float transformPivotX,
float transformPivotY)
```
Set X and Y location of the pivot point around which the view will rotate and scale.
| Parameters ||
|-------------------|------------------------------------------------|
| `transformPivotX` | `float`: X location of the pivot point.
|
| `transformPivotY` | `float`: Y location of the pivot point.
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### transformPivotX
```
public ConstraintProperties transformPivotX (float transformPivotX)
```
Set X location of the pivot point around which the view will rotate and scale.
| Parameters ||
|-------------------|------------------------------------------------|
| `transformPivotX` | `float`: X location of the pivot point.
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### transformPivotY
```
public ConstraintProperties transformPivotY (float transformPivotY)
```
Set Y location of the pivot point around which the view will rotate and scale.
| Parameters ||
|-------------------|------------------------------------------------|
| `transformPivotY` | `float`: Y location of the pivot point.
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### translation
```
public ConstraintProperties translation (float translationX,
float translationY)
```
Adjust the post-layout X and Y translation of a view.
| Parameters ||
|----------------|--------------------------------------|
| `translationX` | `float`: the translation in X
|
| `translationY` | `float`: the translation in Y
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### translationX
```
public ConstraintProperties translationX (float translationX)
```
Adjust the post-layout X translation of a view.
| Parameters ||
|----------------|--------------------------------------|
| `translationX` | `float`: the translation in X
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### translationY
```
public ConstraintProperties translationY (float translationY)
```
Adjust the post-layout Y translation of a view.
| Parameters ||
|----------------|--------------------------------------|
| `translationY` | `float`: the translation in Y
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### translationZ
```
public ConstraintProperties translationZ (float translationZ)
```
Adjust the post-layout translation in Z of a view. This is the preferred way to adjust the shadow.
| Parameters ||
|----------------|----------------------------------|
| `translationZ` | `float`: the translationZ
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### verticalBias
```
public ConstraintProperties verticalBias (float bias)
```
Adjust the vertical bias of the view (used with views constrained on left and right).
| Parameters ||
|--------|---------------------------------------------------|
| `bias` | `float`: the new bias 0.5 is in the middle
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### verticalChainStyle
```
public ConstraintProperties verticalChainStyle (int chainStyle)
```
How the elements of the vertical chain will be positioned. in a chain, if the dimension behaviour is set to MATCH_CONSTRAINT
- CHAIN_SPREAD -- the elements will be spread out
- CHAIN_SPREAD_INSIDE -- similar, but the endpoints of the chain will not be spread out
- CHAIN_PACKED -- the elements of the chain will be packed together. The horizontal bias attribute of the child will then affect the positioning of the packed elements
| Parameters ||
|--------------|-----------------------------------------------------------------------------|
| `chainStyle` | `int`: the weight that we can use to distribute the horizontal space
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### verticalWeight
```
public ConstraintProperties verticalWeight (float weight)
```
The child's weight that we can use to distribute the available vertical space in a chain, if the dimension behaviour is set to MATCH_CONSTRAINT
| Parameters ||
|----------|-----------------------------------------------------------------------------|
| `weight` | `float`: the weight that we can use to distribute the vertical space
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|
### visibility
```
public ConstraintProperties visibility (int visibility)
```
Adjust the visibility of a view.
| Parameters ||
|--------------|------------------------------------------------------------------------|
| `visibility` | `int`: the visibility (View.VISIBLE, View.INVISIBLE, View.GONE)
|
| Returns ||
|-----------------------------------------------------------------------------------------------------------------|-------------|
| [ConstraintProperties](https://developer.android.com/reference/android/support/constraint/ConstraintProperties) | this
|