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LuhnChecksumValidator
class LuhnChecksumValidator : Parcelable, Validator
Validator that returns true if the number created by concatenating all given fields pass a Luhn algorithm checksum. All non-digits are ignored.
See SaveInfo.Builder.setValidator(Validator) for examples.
Summary
| Inherited constants |
From class Parcelable
Int |
CONTENTS_FILE_DESCRIPTOR
Descriptor bit used with describeContents(): indicates that the Parcelable object's flattened representation includes a file descriptor.
|
Int |
PARCELABLE_WRITE_RETURN_VALUE
Flag for use with writeToParcel: 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 |
|
Default constructor.
|
Public constructors
LuhnChecksumValidator
LuhnChecksumValidator(vararg ids: AutofillId!)
Default constructor.
| Parameters |
ids |
AutofillId!: id of fields that comprises the number to be checked. This value cannot be null. |
Public methods
describeContents
fun describeContents(): Int
toString
fun toString(): String
| Return |
String |
a string representation of the object. |
writeToParcel
fun writeToParcel(
parcel: Parcel,
flags: Int
): Unit
Properties
Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
Last updated 2025-02-10 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-02-10 UTC."],[],[],null,["# LuhnChecksumValidator\n\nAdded in [API level 27](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)\n\nLuhnChecksumValidator\n=====================\n\n*** ** * ** ***\n\nKotlin \\|[Java](/reference/android/service/autofill/LuhnChecksumValidator \"View this page in Java\") \n\n```\nclass LuhnChecksumValidator : Parcelable, Validator\n```\n\n|---|-----------------------------------------------------|\n| [kotlin.Any](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html) ||\n| ↳ | [android.service.autofill.LuhnChecksumValidator](#) |\n\nValidator that returns `true` if the number created by concatenating all given fields pass a Luhn algorithm checksum. All non-digits are ignored.\n\nSee [SaveInfo.Builder.setValidator(Validator)](/reference/kotlin/android/service/autofill/SaveInfo.Builder#setValidator(android.service.autofill.Validator)) for examples.\n\nSummary\n-------\n\n| Inherited constants ||\n|---|---|\n| From class [Parcelable](../../os/Parcelable.html#) |----------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html) | [CONTENTS_FILE_DESCRIPTOR](../../os/Parcelable.html#CONTENTS_FILE_DESCRIPTOR:kotlin.Int) Descriptor bit used with [describeContents()](../../os/Parcelable.html#describeContents()): indicates that the Parcelable object's flattened representation includes a file descriptor. \u003cbr /\u003e | | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html) | [PARCELABLE_WRITE_RETURN_VALUE](../../os/Parcelable.html#PARCELABLE_WRITE_RETURN_VALUE:kotlin.Int) Flag for use with [writeToParcel](../../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. \u003cbr /\u003e | ||\n\n| Public constructors ||\n|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---|\n| [LuhnChecksumValidator](#LuhnChecksumValidator(android.view.autofill.AutofillId))`(`vararg` `ids:` `[AutofillId](../../view/autofill/AutofillId.html#)!`)` Default constructor. |\n\n| Public methods ||\n|----------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html) | [describeContents](#describeContents())`()` \u003cbr /\u003e |\n| [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) | [toString](#toString())`()` \u003cbr /\u003e |\n| [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [writeToParcel](#writeToParcel(android.os.Parcel,%20kotlin.Int))`(`parcel:` `[Parcel](../../os/Parcel.html#)`, `flags:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`)` \u003cbr /\u003e |\n\n| Properties ||\n|-----------------------------------------------------------------------------------------------|----------------------------------------------------------|\n| static [Parcelable.Creator](../../os/Parcelable.Creator.html#)\\\u003c[LuhnChecksumValidator](#)!\\\u003e | [CREATOR](#CREATOR:android.os.Parcelable.Creator) \u003cbr /\u003e |\n\nPublic constructors\n-------------------\n\n### LuhnChecksumValidator\n\nAdded in [API level 27](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nLuhnChecksumValidator(vararg ids: AutofillId!)\n```\n\nDefault constructor.\n\n| Parameters ||\n|-------|-----------------------------------------------------------------------------------------------------------------------------------------|\n| `ids` | [AutofillId](../../view/autofill/AutofillId.html#)!: id of fields that comprises the number to be checked. This value cannot be `null`. |\n\nPublic methods\n--------------\n\n### describeContents\n\nAdded in [API level 27](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nfun describeContents(): Int\n```\n\n| Return ||\n|----------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| [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](../../os/Parcelable.html#CONTENTS_FILE_DESCRIPTOR:kotlin.Int) |\n\n### toString\n\nAdded in [API level 27](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nfun toString(): String\n```\n\n| Return ||\n|----------------------------------------------------------------------------------|----------------------------------------|\n| [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) | a string representation of the object. |\n\n### writeToParcel\n\nAdded in [API level 27](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nfun writeToParcel(\n parcel: Parcel, \n flags: Int\n): Unit\n```\n\n| Parameters ||\n|---------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `dest` | The Parcel in which the object should be written. This value cannot be `null`. |\n| `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](../../os/Parcelable.html#PARCELABLE_WRITE_RETURN_VALUE:kotlin.Int). Value is either `0` or a combination of [android.os.Parcelable#PARCELABLE_WRITE_RETURN_VALUE](../../os/Parcelable.html#PARCELABLE_WRITE_RETURN_VALUE:kotlin.Int), and android.os.Parcelable.PARCELABLE_ELIDE_DUPLICATES |\n\nProperties\n----------\n\n### CREATOR\n\nAdded in [API level 27](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nstatic val CREATOR: Parcelable.Creator\u003cLuhnChecksumValidator!\u003e\n```"]]
