# ApkChecksum

Added in[API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)

# ApkChecksum

*** ** * ** ***

Kotlin\|[Java](https://developer.android.com/reference/android/content/pm/ApkChecksum "View this page in Java")  

```
class ApkChecksum : Parcelable
```

|---|------------------------------------------------------------------------------------------------------------------|
| [kotlin.Any](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html)                                   ||
| ↳ | [android.content.pm.ApkChecksum](https://developer.android.com/reference/kotlin/android/content/pm/ApkChecksum#) |

A typed checksum of an APK.

## Summary

| 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) <br /> 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. <br />                                                                                                                                                                                                        | | [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) <br /> 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. <br /> | ||

|                                                                                                                                                                                                                               Public methods                                                                                                                                                                                                                                ||
|-----------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)                          | [describeContents](https://developer.android.com/reference/kotlin/android/content/pm/ApkChecksum#describeContents())`()` <br />                                                                                                                                                                                                                                        |
| [Certificate](https://developer.android.com/reference/kotlin/java/security/cert/Certificate.html#)? | [getInstallerCertificate](https://developer.android.com/reference/kotlin/android/content/pm/ApkChecksum#getInstallerCertificate())`()` For Installer-provided checksums, certificate of the Installer.                                                                                                                                                                 |
| [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)?                   | [getInstallerPackageName](https://developer.android.com/reference/kotlin/android/content/pm/ApkChecksum#getInstallerPackageName())`()` For Installer-provided checksums, package name of the Installer.                                                                                                                                                                |
| [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)?                   | [getSplitName](https://developer.android.com/reference/kotlin/android/content/pm/ApkChecksum#getSplitName())`()` Checksum for which split.                                                                                                                                                                                                                             |
| [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)                          | [getType](https://developer.android.com/reference/kotlin/android/content/pm/ApkChecksum#getType())`()` Checksum type.                                                                                                                                                                                                                                                  |
| [ByteArray](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-byte-array/index.html)             | [getValue](https://developer.android.com/reference/kotlin/android/content/pm/ApkChecksum#getValue())`()` Checksum value.                                                                                                                                                                                                                                               |
| [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)                    | [toString](https://developer.android.com/reference/kotlin/android/content/pm/ApkChecksum#toString())`()` <br />                                                                                                                                                                                                                                                        |
| [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html)                        | [writeToParcel](https://developer.android.com/reference/kotlin/android/content/pm/ApkChecksum#writeToParcel(android.os.Parcel,%20kotlin.Int))`(`dest:` `[Parcel](https://developer.android.com/reference/kotlin/android/os/Parcel.html#)`, `flags:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`)` Flatten this object in to a Parcel. |

|                                                                                                                                                                       Properties                                                                                                                                                                        ||
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------|
| static[Parcelable.Creator](https://developer.android.com/reference/kotlin/android/os/Parcelable.Creator.html#)\<[ApkChecksum](https://developer.android.com/reference/kotlin/android/content/pm/ApkChecksum#)!\> | [CREATOR](https://developer.android.com/reference/kotlin/android/content/pm/ApkChecksum#CREATOR:android.os.Parcelable.Creator) <br /> |

## Public methods

### describeContents

Added in[API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
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) |

### getInstallerCertificate

Added in[API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
fun getInstallerCertificate(): Certificate?
```

For Installer-provided checksums, certificate of the Installer.

|                                                            Return                                                             ||
|-----------------------------------------------------------------------------------------------------|--------------------------|
| [Certificate](https://developer.android.com/reference/kotlin/java/security/cert/Certificate.html#)? | This value may be`null`. |

|                                                  Exceptions                                                   ||
|-------------------------------------------|--------------------------------------------------------------------|
| `java.security.cert.CertificateException` | in case when certificate can't be re-created from serialized data. |

### getInstallerPackageName

Added in[API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
fun getInstallerPackageName(): String?
```

For Installer-provided checksums, package name of the Installer.

|                                                   Return                                                    ||
|-----------------------------------------------------------------------------------|--------------------------|
| [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)? | This value may be`null`. |

### getSplitName

Added in[API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
fun getSplitName(): String?
```

Checksum for which split. Null indicates base.apk.

|                                                   Return                                                    ||
|-----------------------------------------------------------------------------------|--------------------------|
| [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)? | This value may be`null`. |

### getType

Added in[API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
fun getType(): Int
```

Checksum type.

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Return                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             ||
|----------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html) | Value is[android.content.pm.Checksum#TYPE_WHOLE_MERKLE_ROOT_4K_SHA256](https://developer.android.com/reference/kotlin/android/content/pm/Checksum#TYPE_WHOLE_MERKLE_ROOT_4K_SHA256:kotlin.Int),[android.content.pm.Checksum#TYPE_WHOLE_MD5](https://developer.android.com/reference/kotlin/android/content/pm/Checksum#TYPE_WHOLE_MD5:kotlin.Int),[android.content.pm.Checksum#TYPE_WHOLE_SHA1](https://developer.android.com/reference/kotlin/android/content/pm/Checksum#TYPE_WHOLE_SHA1:kotlin.Int),[android.content.pm.Checksum#TYPE_WHOLE_SHA256](https://developer.android.com/reference/kotlin/android/content/pm/Checksum#TYPE_WHOLE_SHA256:kotlin.Int),[android.content.pm.Checksum#TYPE_WHOLE_SHA512](https://developer.android.com/reference/kotlin/android/content/pm/Checksum#TYPE_WHOLE_SHA512:kotlin.Int),[android.content.pm.Checksum#TYPE_PARTIAL_MERKLE_ROOT_1M_SHA256](https://developer.android.com/reference/kotlin/android/content/pm/Checksum#TYPE_PARTIAL_MERKLE_ROOT_1M_SHA256:kotlin.Int), or[android.content.pm.Checksum#TYPE_PARTIAL_MERKLE_ROOT_1M_SHA512](https://developer.android.com/reference/kotlin/android/content/pm/Checksum#TYPE_PARTIAL_MERKLE_ROOT_1M_SHA512:kotlin.Int) |

### getValue

Added in[API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
fun getValue(): ByteArray
```

Checksum value.

|                                                        Return                                                        ||
|-----------------------------------------------------------------------------------------|-----------------------------|
| [ByteArray](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-byte-array/index.html) | This value cannot be`null`. |

### toString

Added in[API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
fun toString(): String
```

|                                                          Return                                                          ||
|----------------------------------------------------------------------------------|----------------------------------------|
| [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) | a string representation of the object. |

### writeToParcel

Added in[API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
fun writeToParcel(
    dest: Parcel, 
    flags: Int
): Unit
```

Flatten this object in to a Parcel.

|                                                                                                                                                                                                                                                                                     Parameters                                                                                                                                                                                                                                                                                     ||
|---------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `dest`  | [Parcel](https://developer.android.com/reference/kotlin/android/os/Parcel.html#):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 |

## Properties

### CREATOR

Added in[API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
static val CREATOR: Parcelable.Creator<ApkChecksum!>
```