# Region
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
# Region
*** ** * ** ***
Kotlin\|[Java](https://developer.android.com/reference/android/graphics/Region "View this page in Java")
```
open class Region : Parcelable
```
|---|----------------------------------------------------------------------------------------------------|
| [kotlin.Any](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html) ||
| ↳ | [android.graphics.Region](https://developer.android.com/reference/kotlin/android/graphics/Region#) |
## Summary
| Nested classes ||
|---|----------------------------------------------------------------------------------------|
| | [Op](https://developer.android.com/reference/kotlin/android/graphics/Region.Op)
|
| Inherited constants ||
|---|---|
| From class[Parcelable](https://developer.android.com/reference/kotlin/android/os/Parcelable.html#) |----------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html) | [CONTENTS_FILE_DESCRIPTOR](https://developer.android.com/reference/kotlin/android/os/Parcelable.html#CONTENTS_FILE_DESCRIPTOR:kotlin.Int)
Descriptor bit used with[describeContents()](https://developer.android.com/reference/kotlin/android/os/Parcelable.html#describeContents()): indicates that the Parcelable object's flattened representation includes a file descriptor.
| | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html) | [PARCELABLE_WRITE_RETURN_VALUE](https://developer.android.com/reference/kotlin/android/os/Parcelable.html#PARCELABLE_WRITE_RETURN_VALUE:kotlin.Int)
Flag for use with[writeToParcel](https://developer.android.com/reference/kotlin/android/os/Parcelable.html#writeToParcel(android.os.Parcel,%20kotlin.Int)): the object being written is a return value, that is the result of a function such as "`Parcelable someFunction()`", "`void someFunction(out Parcelable)`", or "`void someFunction(inout Parcelable)`". Some implementations may want to release resources at this point.
| ||
| Public constructors ||
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---|
| [Region](https://developer.android.com/reference/kotlin/android/graphics/Region#Region())`()` Create an empty region |
| [Region](https://developer.android.com/reference/kotlin/android/graphics/Region#Region(android.graphics.Rect))`(`r:` `[Rect](https://developer.android.com/reference/kotlin/android/graphics/Rect)`)` Return a region set to the specified rectangle |
| [Region](https://developer.android.com/reference/kotlin/android/graphics/Region#Region(android.graphics.Region))`(`region:` `[Region](https://developer.android.com/reference/kotlin/android/graphics/Region#)`)` Return a copy of the specified region |
| [Region](https://developer.android.com/reference/kotlin/android/graphics/Region#Region(kotlin.Int,%20kotlin.Int,%20kotlin.Int,%20kotlin.Int))`(`left:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `top:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `right:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `bottom:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`)` Return a region set to the specified rectangle |
| Public methods ||
|----------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [contains](https://developer.android.com/reference/kotlin/android/graphics/Region#contains(kotlin.Int,%20kotlin.Int))`(`x:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `y:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`)` Return true if the region contains the specified point |
| open[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html) | [describeContents](https://developer.android.com/reference/kotlin/android/graphics/Region#describeContents())`()`
|
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [equals](https://developer.android.com/reference/kotlin/android/graphics/Region#equals(kotlin.Any))`(`other:` `[Any](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html)?`)`
|
| open[Path](https://developer.android.com/reference/kotlin/android/graphics/Path) | [getBoundaryPath](https://developer.android.com/reference/kotlin/android/graphics/Region#getBoundaryPath())`()` Return the boundary of the region as a new Path. |
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [getBoundaryPath](https://developer.android.com/reference/kotlin/android/graphics/Region#getBoundaryPath(android.graphics.Path))`(`path:` `[Path](https://developer.android.com/reference/kotlin/android/graphics/Path)`)` Set the path to the boundary of the region. |
| open[Rect](https://developer.android.com/reference/kotlin/android/graphics/Rect) | [getBounds](https://developer.android.com/reference/kotlin/android/graphics/Region#getBounds())`()` Return a new Rect set to the bounds of the region. |
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [getBounds](https://developer.android.com/reference/kotlin/android/graphics/Region#getBounds(android.graphics.Rect))`(`r:` `[Rect](https://developer.android.com/reference/kotlin/android/graphics/Rect)`)` Set the Rect to the bounds of the region. |
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [isComplex](https://developer.android.com/reference/kotlin/android/graphics/Region#isComplex())`()` Return true if the region contains more than one rectangle |
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [isEmpty](https://developer.android.com/reference/kotlin/android/graphics/Region#isEmpty())`()` Return true if this region is empty |
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [isRect](https://developer.android.com/reference/kotlin/android/graphics/Region#isRect())`()` Return true if the region contains a single rectangle |
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [op](https://developer.android.com/reference/kotlin/android/graphics/Region#op(android.graphics.Rect,%20android.graphics.Region,%20android.graphics.Region.Op))`(`rect:` `[Rect](https://developer.android.com/reference/kotlin/android/graphics/Rect)`, `region:` `[Region](https://developer.android.com/reference/kotlin/android/graphics/Region#)`, `op:` `[Region.Op](https://developer.android.com/reference/kotlin/android/graphics/Region.Op)`)` Set this region to the result of performing the Op on the specified rect and region. |
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [op](https://developer.android.com/reference/kotlin/android/graphics/Region#op(android.graphics.Rect,%20android.graphics.Region.Op))`(`r:` `[Rect](https://developer.android.com/reference/kotlin/android/graphics/Rect)`, `op:` `[Region.Op](https://developer.android.com/reference/kotlin/android/graphics/Region.Op)`)` Perform the specified Op on this region and the specified rect. |
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [op](https://developer.android.com/reference/kotlin/android/graphics/Region#op(android.graphics.Region,%20android.graphics.Region,%20android.graphics.Region.Op))`(`region1:` `[Region](https://developer.android.com/reference/kotlin/android/graphics/Region#)`, `region2:` `[Region](https://developer.android.com/reference/kotlin/android/graphics/Region#)`, `op:` `[Region.Op](https://developer.android.com/reference/kotlin/android/graphics/Region.Op)`)` Set this region to the result of performing the Op on the specified regions. |
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [op](https://developer.android.com/reference/kotlin/android/graphics/Region#op(android.graphics.Region,%20android.graphics.Region.Op))`(`region:` `[Region](https://developer.android.com/reference/kotlin/android/graphics/Region#)`, `op:` `[Region.Op](https://developer.android.com/reference/kotlin/android/graphics/Region.Op)`)` Perform the specified Op on this region and the specified region. |
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [op](https://developer.android.com/reference/kotlin/android/graphics/Region#op(kotlin.Int,%20kotlin.Int,%20kotlin.Int,%20kotlin.Int,%20android.graphics.Region.Op))`(`left:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `top:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `right:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `bottom:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `op:` `[Region.Op](https://developer.android.com/reference/kotlin/android/graphics/Region.Op)`)` Perform the specified Op on this region and the specified rect. |
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [quickContains](https://developer.android.com/reference/kotlin/android/graphics/Region#quickContains(android.graphics.Rect))`(`r:` `[Rect](https://developer.android.com/reference/kotlin/android/graphics/Rect)`)` Return true if the region is a single rectangle (not complex) and it contains the specified rectangle. |
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [quickContains](https://developer.android.com/reference/kotlin/android/graphics/Region#quickContains(kotlin.Int,%20kotlin.Int,%20kotlin.Int,%20kotlin.Int))`(`left:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `top:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `right:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `bottom:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`)` Return true if the region is a single rectangle (not complex) and it contains the specified rectangle. |
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [quickReject](https://developer.android.com/reference/kotlin/android/graphics/Region#quickReject(android.graphics.Rect))`(`r:` `[Rect](https://developer.android.com/reference/kotlin/android/graphics/Rect)`)` Return true if the region is empty, or if the specified rectangle does not intersect the region. |
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [quickReject](https://developer.android.com/reference/kotlin/android/graphics/Region#quickReject(android.graphics.Region))`(`rgn:` `[Region](https://developer.android.com/reference/kotlin/android/graphics/Region#)!`)` Return true if the region is empty, or if the specified region does not intersect the region. |
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [quickReject](https://developer.android.com/reference/kotlin/android/graphics/Region#quickReject(kotlin.Int,%20kotlin.Int,%20kotlin.Int,%20kotlin.Int))`(`left:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `top:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `right:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `bottom:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`)` Return true if the region is empty, or if the specified rectangle does not intersect the region. |
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [set](https://developer.android.com/reference/kotlin/android/graphics/Region#set(android.graphics.Rect))`(`r:` `[Rect](https://developer.android.com/reference/kotlin/android/graphics/Rect)`)` Set the region to the specified rectangle |
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [set](https://developer.android.com/reference/kotlin/android/graphics/Region#set(android.graphics.Region))`(`region:` `[Region](https://developer.android.com/reference/kotlin/android/graphics/Region#)`)` Set the region to the specified region. |
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [set](https://developer.android.com/reference/kotlin/android/graphics/Region#set(kotlin.Int,%20kotlin.Int,%20kotlin.Int,%20kotlin.Int))`(`left:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `top:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `right:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `bottom:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`)` Set the region to the specified rectangle |
| open[Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [setEmpty](https://developer.android.com/reference/kotlin/android/graphics/Region#setEmpty())`()` Set the region to the empty region |
| open[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [setPath](https://developer.android.com/reference/kotlin/android/graphics/Region#setPath(android.graphics.Path,%20android.graphics.Region))`(`path:` `[Path](https://developer.android.com/reference/kotlin/android/graphics/Path)`, `clip:` `[Region](https://developer.android.com/reference/kotlin/android/graphics/Region#)`)` Set the region to the area described by the path and clip. |
| open[String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) | [toString](https://developer.android.com/reference/kotlin/android/graphics/Region#toString())`()`
|
| open[Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [translate](https://developer.android.com/reference/kotlin/android/graphics/Region#translate(kotlin.Int,%20kotlin.Int))`(`dx:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `dy:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`)` Translate the region by \[dx, dy\]. |
| open[Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [translate](https://developer.android.com/reference/kotlin/android/graphics/Region#translate(kotlin.Int,%20kotlin.Int,%20android.graphics.Region))`(`dx:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `dy:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `dst:` `[Region](https://developer.android.com/reference/kotlin/android/graphics/Region#)!`)` Set the dst region to the result of translating this region by \[dx, dy\]. |
| [Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | [union](https://developer.android.com/reference/kotlin/android/graphics/Region#union(android.graphics.Rect))`(`r:` `[Rect](https://developer.android.com/reference/kotlin/android/graphics/Rect)`)`
|
| open[Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [writeToParcel](https://developer.android.com/reference/kotlin/android/graphics/Region#writeToParcel(android.os.Parcel,%20kotlin.Int))`(`p:` `[Parcel](https://developer.android.com/reference/kotlin/android/os/Parcel.html#)`, `flags:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`)` Write the region and its pixels to the parcel. |
| Protected methods ||
|----------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------|
| open[Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [finalize](https://developer.android.com/reference/kotlin/android/graphics/Region#finalize())`()`
|
| Properties ||
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------|
| static[Parcelable.Creator](https://developer.android.com/reference/kotlin/android/os/Parcelable.Creator.html#)\<[Region](https://developer.android.com/reference/kotlin/android/graphics/Region#)!\> | [CREATOR](https://developer.android.com/reference/kotlin/android/graphics/Region#CREATOR:android.os.Parcelable.Creator)
|
## Public constructors
### Region
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
Region()
```
Create an empty region
### Region
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
Region(r: Rect)
```
Return a region set to the specified rectangle
| Parameters ||
|-----|----------------------------------------------------------------------------------------------------------|
| `r` | [Rect](https://developer.android.com/reference/kotlin/android/graphics/Rect):This value cannot be`null`. |
### Region
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
Region(region: Region)
```
Return a copy of the specified region
| Parameters ||
|----------|---------------------------------------------------------------------------------------------------------------|
| `region` | [Region](https://developer.android.com/reference/kotlin/android/graphics/Region#):This value cannot be`null`. |
### Region
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
Region(
left: Int,
top: Int,
right: Int,
bottom: Int)
```
Return a region set to the specified rectangle
## Public methods
### contains
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun contains(
x: Int,
y: Int
): Boolean
```
Return true if the region contains the specified point
### describeContents
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun describeContents(): Int
```
| Return ||
|----------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html) | a bitmask indicating the set of special object types marshaled by this Parcelable object instance. Value is either`0`or[android.os.Parcelable#CONTENTS_FILE_DESCRIPTOR](https://developer.android.com/reference/kotlin/android/os/Parcelable.html#CONTENTS_FILE_DESCRIPTOR:kotlin.Int) |
### equals
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun equals(other: Any?): Boolean
```
| Parameters ||
|-------|---------------------------------------------|
| `obj` | the reference object with which to compare. |
| Return ||
|------------------------------------------------------------------------------------|------------------------------------------------------------------------|
| [Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) | `true`if this object is the same as the obj argument;`false`otherwise. |
### getBoundaryPath
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun getBoundaryPath(): Path
```
Return the boundary of the region as a new Path. If the region is empty, the path will also be empty.
| Return ||
|------------------------------------------------------------------------------|-----------------------------|
| [Path](https://developer.android.com/reference/kotlin/android/graphics/Path) | This value cannot be`null`. |
### getBoundaryPath
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun getBoundaryPath(path: Path): Boolean
```
Set the path to the boundary of the region. If the region is empty, the path will also be empty.
| Parameters ||
|--------|----------------------------------------------------------------------------------------------------------|
| `path` | [Path](https://developer.android.com/reference/kotlin/android/graphics/Path):This value cannot be`null`. |
### getBounds
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun getBounds(): Rect
```
Return a new Rect set to the bounds of the region. If the region is empty, the Rect will be set to \[0, 0, 0, 0\]
| Return ||
|------------------------------------------------------------------------------|-----------------------------|
| [Rect](https://developer.android.com/reference/kotlin/android/graphics/Rect) | This value cannot be`null`. |
### getBounds
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun getBounds(r: Rect): Boolean
```
Set the Rect to the bounds of the region. If the region is empty, the Rect will be set to \[0, 0, 0, 0\]
| Parameters ||
|-----|----------------------------------------------------------------------------------------------------------|
| `r` | [Rect](https://developer.android.com/reference/kotlin/android/graphics/Rect):This value cannot be`null`. |
### isComplex
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun isComplex(): Boolean
```
Return true if the region contains more than one rectangle
### isEmpty
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun isEmpty(): Boolean
```
Return true if this region is empty
### isRect
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun isRect(): Boolean
```
Return true if the region contains a single rectangle
### op
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun op(
rect: Rect,
region: Region,
op: Region.Op
): Boolean
```
Set this region to the result of performing the Op on the specified rect and region. Return true if the result is not empty.
| Parameters ||
|----------|--------------------------------------------------------------------------------------------------------------------|
| `rect` | [Rect](https://developer.android.com/reference/kotlin/android/graphics/Rect):This value cannot be`null`. |
| `region` | [Region](https://developer.android.com/reference/kotlin/android/graphics/Region#):This value cannot be`null`. |
| `op` | [Region.Op](https://developer.android.com/reference/kotlin/android/graphics/Region.Op):This value cannot be`null`. |
### op
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun op(
r: Rect,
op: Region.Op
): Boolean
```
Perform the specified Op on this region and the specified rect. Return true if the result of the op is not empty.
| Parameters ||
|------|--------------------------------------------------------------------------------------------------------------------|
| `r` | [Rect](https://developer.android.com/reference/kotlin/android/graphics/Rect):This value cannot be`null`. |
| `op` | [Region.Op](https://developer.android.com/reference/kotlin/android/graphics/Region.Op):This value cannot be`null`. |
### op
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun op(
region1: Region,
region2: Region,
op: Region.Op
): Boolean
```
Set this region to the result of performing the Op on the specified regions. Return true if the result is not empty.
| Parameters ||
|-----------|--------------------------------------------------------------------------------------------------------------------|
| `region1` | [Region](https://developer.android.com/reference/kotlin/android/graphics/Region#):This value cannot be`null`. |
| `region2` | [Region](https://developer.android.com/reference/kotlin/android/graphics/Region#):This value cannot be`null`. |
| `op` | [Region.Op](https://developer.android.com/reference/kotlin/android/graphics/Region.Op):This value cannot be`null`. |
### op
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun op(
region: Region,
op: Region.Op
): Boolean
```
Perform the specified Op on this region and the specified region. Return true if the result of the op is not empty.
| Parameters ||
|----------|--------------------------------------------------------------------------------------------------------------------|
| `region` | [Region](https://developer.android.com/reference/kotlin/android/graphics/Region#):This value cannot be`null`. |
| `op` | [Region.Op](https://developer.android.com/reference/kotlin/android/graphics/Region.Op):This value cannot be`null`. |
### op
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun op(
left: Int,
top: Int,
right: Int,
bottom: Int,
op: Region.Op
): Boolean
```
Perform the specified Op on this region and the specified rect. Return true if the result of the op is not empty.
| Parameters ||
|------|--------------------------------------------------------------------------------------------------------------------|
| `op` | [Region.Op](https://developer.android.com/reference/kotlin/android/graphics/Region.Op):This value cannot be`null`. |
### quickContains
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun quickContains(r: Rect): Boolean
```
Return true if the region is a single rectangle (not complex) and it contains the specified rectangle. Returning false is not a guarantee that the rectangle is not contained by this region, but return true is a guarantee that the rectangle is contained by this region.
| Parameters ||
|-----|----------------------------------------------------------------------------------------------------------|
| `r` | [Rect](https://developer.android.com/reference/kotlin/android/graphics/Rect):This value cannot be`null`. |
### quickContains
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun quickContains(
left: Int,
top: Int,
right: Int,
bottom: Int
): Boolean
```
Return true if the region is a single rectangle (not complex) and it contains the specified rectangle. Returning false is not a guarantee that the rectangle is not contained by this region, but return true is a guarantee that the rectangle is contained by this region.
### quickReject
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun quickReject(r: Rect): Boolean
```
Return true if the region is empty, or if the specified rectangle does not intersect the region. Returning false is not a guarantee that they intersect, but returning true is a guarantee that they do not.
| Parameters ||
|-----|----------------------------------------------------------------------------------------------------------|
| `r` | [Rect](https://developer.android.com/reference/kotlin/android/graphics/Rect):This value cannot be`null`. |
### quickReject
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun quickReject(rgn: Region!): Boolean
```
Return true if the region is empty, or if the specified region does not intersect the region. Returning false is not a guarantee that they intersect, but returning true is a guarantee that they do not.
### quickReject
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun quickReject(
left: Int,
top: Int,
right: Int,
bottom: Int
): Boolean
```
Return true if the region is empty, or if the specified rectangle does not intersect the region. Returning false is not a guarantee that they intersect, but returning true is a guarantee that they do not.
### set
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun set(r: Rect): Boolean
```
Set the region to the specified rectangle
| Parameters ||
|-----|----------------------------------------------------------------------------------------------------------|
| `r` | [Rect](https://developer.android.com/reference/kotlin/android/graphics/Rect):This value cannot be`null`. |
### set
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun set(region: Region): Boolean
```
Set the region to the specified region.
| Parameters ||
|----------|---------------------------------------------------------------------------------------------------------------|
| `region` | [Region](https://developer.android.com/reference/kotlin/android/graphics/Region#):This value cannot be`null`. |
### set
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun set(
left: Int,
top: Int,
right: Int,
bottom: Int
): Boolean
```
Set the region to the specified rectangle
### setEmpty
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun setEmpty(): Unit
```
Set the region to the empty region
### setPath
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun setPath(
path: Path,
clip: Region
): Boolean
```
Set the region to the area described by the path and clip. Return true if the resulting region is non-empty. This produces a region that is identical to the pixels that would be drawn by the path (with no antialiasing).
| Parameters ||
|--------|---------------------------------------------------------------------------------------------------------------|
| `path` | [Path](https://developer.android.com/reference/kotlin/android/graphics/Path):This value cannot be`null`. |
| `clip` | [Region](https://developer.android.com/reference/kotlin/android/graphics/Region#):This value cannot be`null`. |
### toString
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun toString(): String
```
| Return ||
|----------------------------------------------------------------------------------|----------------------------------------|
| [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) | a string representation of the object. |
### translate
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun translate(
dx: Int,
dy: Int
): Unit
```
Translate the region by \[dx, dy\]. If the region is empty, do nothing.
### translate
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun translate(
dx: Int,
dy: Int,
dst: Region!
): Unit
```
Set the dst region to the result of translating this region by \[dx, dy\]. If this region is empty, then dst will be set to empty.
### union
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
fun union(r: Rect): Boolean
```
| Parameters ||
|-----|----------------------------------------------------------------------------------------------------------|
| `r` | [Rect](https://developer.android.com/reference/kotlin/android/graphics/Rect):This value cannot be`null`. |
### writeToParcel
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
open fun writeToParcel(
p: Parcel,
flags: Int
): Unit
```
Write the region and its pixels to the parcel. The region can be rebuilt from the parcel by calling CREATOR.createFromParcel().
| Parameters ||
|---------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `dest` | The Parcel in which the object should be written. This value cannot be`null`. |
| `flags` | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html):Additional flags about how the object should be written. May be 0 or[PARCELABLE_WRITE_RETURN_VALUE](https://developer.android.com/reference/kotlin/android/os/Parcelable.html#PARCELABLE_WRITE_RETURN_VALUE:kotlin.Int). Value is either`0`or a combination of[android.os.Parcelable#PARCELABLE_WRITE_RETURN_VALUE](https://developer.android.com/reference/kotlin/android/os/Parcelable.html#PARCELABLE_WRITE_RETURN_VALUE:kotlin.Int), and android.os.Parcelable.PARCELABLE_ELIDE_DUPLICATES |
| `p` | [Parcel](https://developer.android.com/reference/kotlin/android/os/Parcel.html#):Parcel object to write the region data into |
## Protected methods
### finalize
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
protected open fun finalize(): Unit
```
| Exceptions ||
|-----------------------|-------------------------------------|
| `java.lang.Throwable` | the`Exception`raised by this method |
## Properties
### CREATOR
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)
```
static val CREATOR: Parcelable.Creator
```