Added in API level 1
Deprecated in API level 30

LoginFilter

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Kotlin |Java

abstract class LoginFilter : InputFilter

kotlin.Any
↳	android.text.LoginFilter

Known Direct Subclasses LoginFilter.PasswordFilterGMail, LoginFilter.UsernameFilterGMail, LoginFilter.UsernameFilterGeneric LoginFilter.PasswordFilterGMail This filter is compatible with GMail passwords which restricts characters to the Latin-1 (ISO8859-1) char set. LoginFilter.UsernameFilterGMail This filter rejects characters in the user name that are not compatible with GMail account creation. LoginFilter.UsernameFilterGeneric This filter rejects characters in the user name that are not compatible with Google login.

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This class was deprecated in API level 30.

Password requirements should not be hardcoded in clients. This class also does not handle non-BMP characters.

Abstract class for filtering login-related text (user names and passwords)

Summary

Nested classes
open	PasswordFilterGMail This filter is compatible with GMail passwords which restricts characters to the Latin-1 (ISO8859-1) char set.
open	UsernameFilterGMail This filter rejects characters in the user name that are not compatible with GMail account creation.
open	UsernameFilterGeneric This filter rejects characters in the user name that are not compatible with Google login.

Public methods
open CharSequence!	filter(source: CharSequence!, start: Int, end: Int, dest: Spanned!, dstart: Int, dend: Int) This method is called when the buffer is going to replace the range dstart … dend of dest with the new text from the range start … end of source.
abstract Boolean	isAllowed(c: Char) Returns whether or not we allow character c.
open Unit	onInvalidCharacter(c: Char) Called whenever we encounter an invalid character.
open Unit	onStart() Called when we start processing filter.
open Unit	onStop() Called when we're done processing filter

Public methods

filter

Added in API level 1

open fun filter(
    source: CharSequence!, 
    start: Int, 
    end: Int, 
    dest: Spanned!, 
    dstart: Int, 
    dend: Int
): CharSequence!

Deprecated: Deprecated in Java.

This method is called when the buffer is going to replace the range dstart … dend of dest with the new text from the range start … end of source. Returns the CharSequence that we want placed there instead, including an empty string if appropriate, or null to accept the original replacement. Be careful to not to reject 0-length replacements, as this is what happens when you delete text.

isAllowed

Added in API level 1

abstract fun isAllowed(c: Char): Boolean

Deprecated: Deprecated in Java.

Returns whether or not we allow character c. Subclasses must override this method.

onInvalidCharacter

Added in API level 1

open fun onInvalidCharacter(c: Char): Unit

Deprecated: Deprecated in Java.

Called whenever we encounter an invalid character.

Parameters
c	Char: the invalid character

onStart

Added in API level 1

open fun onStart(): Unit

Deprecated: Deprecated in Java.

Called when we start processing filter.

onStop

Added in API level 1

open fun onStop(): Unit

Deprecated: Deprecated in Java.

Called when we're done processing filter