public abstract class LoginFilter
extends Object implements InputFilter


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

class LoginFilter.PasswordFilterGMail

This class was deprecated in API level 30. Do not handle a user's Google password. Refer to Google Help for password restriction information. 

class LoginFilter.UsernameFilterGMail

This class was deprecated in API level 30. Do not encode assumptions about Google account names into client applications. 

class LoginFilter.UsernameFilterGeneric

This filter rejects characters in the user name that are not compatible with Google login. 

Public methods

CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend)

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(char c)

Returns whether or not we allow character c.

void onInvalidCharacter(char c)

Called whenever we encounter an invalid character.

void onStart()

Called when we start processing filter.

void onStop()

Called when we're done processing filter

Inherited methods

From class java.lang.Object

Object clone()

Creates and returns a copy of this object.

boolean equals(Object obj)

Indicates whether some other object is "equal to" this one.

void finalize()

Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.

final Class<?> getClass()

Returns the runtime class of this Object.

int hashCode()

Returns a hash code value for the object.

final void notify()

Wakes up a single thread that is waiting on this object's monitor.

final void notifyAll()

Wakes up all threads that are waiting on this object's monitor.

String toString()

Returns a string representation of the object.

final void wait(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 wait(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 wait()

Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

From interface android.text.InputFilter

abstract CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend)

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.

Public methods

filter

Added in API level 1 

public CharSequence filter (CharSequence source, 
                int start, 
                int end, 
                Spanned dest, 
                int dstart, 
                int dend)

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.

Parameters
source CharSequence
start int
end int
dest Spanned
dstart int
dend int
Returns
CharSequence

isAllowed

Added in API level 1 

public abstract boolean isAllowed (char c)

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

Parameters
c char
Returns
boolean

onInvalidCharacter

Added in API level 1 

public void onInvalidCharacter (char c)

Called whenever we encounter an invalid character.

Parameters
c char: the invalid character

onStart

Added in API level 1 

public void onStart ()

Called when we start processing filter.

onStop

Added in API level 1 

public void onStop ()

Called when we're done processing filter

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Last updated 2025-02-10 UTC.