Added in [API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) Summary: [Inherited Constants](https://developer.android.com/reference/android/content/pm/ApkChecksum#inhconstants) \| [Fields](https://developer.android.com/reference/android/content/pm/ApkChecksum#lfields) \| [Methods](https://developer.android.com/reference/android/content/pm/ApkChecksum#pubmethods) \| [Inherited Methods](https://developer.android.com/reference/android/content/pm/ApkChecksum#inhmethods)

# ApkChecksum

*** ** * ** ***

` public final class ApkChecksum `   
` extends https://developer.android.com/reference/java/lang/Object ` ` implements https://developer.android.com/reference/android/os/Parcelable `

|---|---|
| [java.lang.Object](https://developer.android.com/reference/java/lang/Object) ||
| ↳ | android.content.pm.ApkChecksum |

<br />

*** ** * ** ***

A typed checksum of an APK.
**See also:**

- `https://developer.android.com/reference/android/content/pm/PackageManager#requestChecksums(java.lang.String,%20boolean,%20int,%20java.util.List<java.security.cert.Certificate>,%20android.content.pm.PackageManager.OnChecksumsReadyListener)`

## Summary

### Inherited constants

From interface `https://developer.android.com/reference/android/os/Parcelable` `int` `https://developer.android.com/reference/android/os/Parcelable#CONTENTS_FILE_DESCRIPTOR`

Descriptor bit used with `https://developer.android.com/reference/android/os/Parcelable#describeContents()`: indicates that the Parcelable object's flattened representation includes a file descriptor.
`int` `https://developer.android.com/reference/android/os/Parcelable#PARCELABLE_WRITE_RETURN_VALUE`

Flag for use with `https://developer.android.com/reference/android/os/Parcelable#writeToParcel(android.os.Parcel,%20int)`: 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)`".

| ### Fields ||
|---|---|
| ` public static final https://developer.android.com/reference/android/os/Parcelable.Creator<https://developer.android.com/reference/android/content/pm/ApkChecksum>` | `https://developer.android.com/reference/android/content/pm/ApkChecksum#CREATOR` <br /> |

| ### Public methods ||
|---|---|
| ` int` | ` https://developer.android.com/reference/android/content/pm/ApkChecksum#describeContents()() ` Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. |
| ` https://developer.android.com/reference/java/security/cert/Certificate` | ` https://developer.android.com/reference/android/content/pm/ApkChecksum#getInstallerCertificate()() ` For Installer-provided checksums, certificate of the Installer. |
| ` https://developer.android.com/reference/java/lang/String` | ` https://developer.android.com/reference/android/content/pm/ApkChecksum#getInstallerPackageName()() ` For Installer-provided checksums, package name of the Installer. |
| ` https://developer.android.com/reference/java/lang/String` | ` https://developer.android.com/reference/android/content/pm/ApkChecksum#getSplitName()() ` Checksum for which split. |
| ` int` | ` https://developer.android.com/reference/android/content/pm/ApkChecksum#getType()() ` Checksum type. |
| ` byte[]` | ` https://developer.android.com/reference/android/content/pm/ApkChecksum#getValue()() ` Checksum value. |
| ` https://developer.android.com/reference/java/lang/String` | ` https://developer.android.com/reference/android/content/pm/ApkChecksum#toString()() ` Returns a string representation of the object. |
| ` void` | ` https://developer.android.com/reference/android/content/pm/ApkChecksum#writeToParcel(android.os.Parcel,%20int)(https://developer.android.com/reference/android/os/Parcel dest, int flags) ` Flatten this object in to a Parcel. |

### Inherited methods

From class ` https://developer.android.com/reference/java/lang/Object ` ` https://developer.android.com/reference/java/lang/Object` ` https://developer.android.com/reference/java/lang/Object#clone()() `

Creates and returns a copy of this object.
` boolean` ` https://developer.android.com/reference/java/lang/Object#equals(java.lang.Object)(https://developer.android.com/reference/java/lang/Object obj) `

Indicates whether some other object is "equal to" this one.
` void` ` https://developer.android.com/reference/java/lang/Object#finalize()() `

Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
` final https://developer.android.com/reference/java/lang/Class<?>` ` https://developer.android.com/reference/java/lang/Object#getClass()() `

Returns the runtime class of this `Object`.
` int` ` https://developer.android.com/reference/java/lang/Object#hashCode()() `

Returns a hash code value for the object.
` final void` ` https://developer.android.com/reference/java/lang/Object#notify()() `

Wakes up a single thread that is waiting on this object's monitor.
` final void` ` https://developer.android.com/reference/java/lang/Object#notifyAll()() `

Wakes up all threads that are waiting on this object's monitor.
` https://developer.android.com/reference/java/lang/String` ` https://developer.android.com/reference/java/lang/Object#toString()() `

Returns a string representation of the object.
` final void` ` https://developer.android.com/reference/java/lang/Object#wait(long,%20int)(long timeoutMillis, int nanos) `

Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed.
` final void` ` https://developer.android.com/reference/java/lang/Object#wait(long)(long timeoutMillis) `

Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed.
` final void` ` https://developer.android.com/reference/java/lang/Object#wait()() `

Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*.
From interface ` https://developer.android.com/reference/android/os/Parcelable ` ` abstract int` ` https://developer.android.com/reference/android/os/Parcelable#describeContents()() `

Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.
` abstract void` ` https://developer.android.com/reference/android/os/Parcelable#writeToParcel(android.os.Parcel,%20int)(https://developer.android.com/reference/android/os/Parcel dest, int flags) `

Flatten this object in to a Parcel.

## Fields

### CREATOR

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

```
public static final Creator<ApkChecksum> CREATOR
```

<br />

<br />

## Public methods

### describeContents

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

```
public int describeContents ()
```

Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. For example, if the object will include a file descriptor in the output of `https://developer.android.com/reference/android/os/Parcelable#writeToParcel(android.os.Parcel,%20int)`, the return value of this method must include the `https://developer.android.com/reference/android/os/Parcelable#CONTENTS_FILE_DESCRIPTOR` bit.

<br />

| Returns ||
|---|---|
| `int` | a bitmask indicating the set of special object types marshaled by this Parcelable object instance. Value is either `0` or - `https://developer.android.com/reference/android/os/Parcelable#CONTENTS_FILE_DESCRIPTOR` |

### getInstallerCertificate

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

```
public Certificate getInstallerCertificate ()
```

For Installer-provided checksums, certificate of the Installer.

<br />

| Returns ||
|---|---|
| `https://developer.android.com/reference/java/security/cert/Certificate` | This value may be `null`. <br /> |

| Throws ||
|---|---|
| `https://developer.android.com/reference/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#ApiLevels)

```
public String getInstallerPackageName ()
```

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

<br />

| Returns ||
|---|---|
| `https://developer.android.com/reference/java/lang/String` | This value may be `null`. <br /> |

### getSplitName

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

```
public String getSplitName ()
```

Checksum for which split. Null indicates base.apk.

<br />

| Returns ||
|---|---|
| `https://developer.android.com/reference/java/lang/String` | This value may be `null`. <br /> |

### getType

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

```
public int getType ()
```

Checksum type.

<br />

| Returns ||
|---|---|
| `int` | Value is one of the following: - `https://developer.android.com/reference/android/content/pm/Checksum#TYPE_WHOLE_MERKLE_ROOT_4K_SHA256` - `https://developer.android.com/reference/android/content/pm/Checksum#TYPE_WHOLE_MD5` - `https://developer.android.com/reference/android/content/pm/Checksum#TYPE_WHOLE_SHA1` - `https://developer.android.com/reference/android/content/pm/Checksum#TYPE_WHOLE_SHA256` - `https://developer.android.com/reference/android/content/pm/Checksum#TYPE_WHOLE_SHA512` - `https://developer.android.com/reference/android/content/pm/Checksum#TYPE_PARTIAL_MERKLE_ROOT_1M_SHA256` - `https://developer.android.com/reference/android/content/pm/Checksum#TYPE_PARTIAL_MERKLE_ROOT_1M_SHA512` |

### getValue

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

```
public byte[] getValue ()
```

Checksum value.

<br />

| Returns ||
|---|---|
| `byte[]` | This value cannot be `null`. <br /> |

### toString

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

```
public String toString ()
```

Returns a string representation of the object.

<br />

| Returns ||
|---|---|
| `https://developer.android.com/reference/java/lang/String` | a string representation of the object. <br /> |

### writeToParcel

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

```
public void writeToParcel (Parcel dest, 
                int flags)
```

Flatten this object in to a Parcel.

<br />

| Parameters ||
|---|---|
| `dest` | `Parcel`: This value cannot be `null`. <br /> |
| `flags` | `int`: Additional flags about how the object should be written. May be 0 or `https://developer.android.com/reference/android/os/Parcelable#PARCELABLE_WRITE_RETURN_VALUE`. Value is either `0` or a combination of the following: - `https://developer.android.com/reference/android/os/Parcelable#PARCELABLE_WRITE_RETURN_VALUE` |