[ Web Proxy ]

Viewing: https://developer.android.com/reference/kotlin/android/widget/AutoCompleteTextView.Validator

AutoCompleteTextView.Validator | API reference | Android Developers Skip to main content

[Android Developers]

Essentials Design & Plan Develop Google Play Blog

English
Deutsch
Espaol Amrica Latina
Franais
Indonesia
Polski
Portugus Brasil
Ting Vit

Android Studio

Stay organized with collections Save and categorize content based on your preferences.

Added in API level 1

Validator

Kotlin |Java

interface Validator

android.widget.AutoCompleteTextView.Validator

This interface is used to make sure that the text entered in this TextView complies to a certain format. Since there is no foolproof way to prevent the user from leaving this View with an incorrect value in it, all we can do is try to fix it ourselves when this happens.

Summary

Public methods
abstract CharSequence!	`fixText(invalidText: CharSequence!)` Corrects the specified text to make it valid.
abstract Boolean	`isValid(text: CharSequence!)` Validates the specified text.

Public methods

fixText

Added in API level 1

abstract fun fixText(invalidText: CharSequence!): CharSequence!

Corrects the specified text to make it valid.

Parameters
`invalidText`	CharSequence!: A string that doesn't pass validation: isValid(invalidText) returns false

Return
`CharSequence!`	A string based on invalidText such as invoking isValid() on it returns true.

See Also

#isValid(java.lang.CharSequence)

isValid

Added in API level 1

abstract fun isValid(text: CharSequence!): Boolean

Validates the specified text.

Return
`Boolean`	true If the text currently in the text editor is valid.

See Also

#fixText(java.lang.CharSequence)

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 2026-02-26 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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2026-02-26 UTC."],[],[]]