android.text
Class LoginFilter

java.lang.Object
  android.text.LoginFilter

All Implemented Interfaces:

InputFilter

Direct Known Subclasses:

LoginFilter.PasswordFilterGMail, LoginFilter.UsernameFilterGeneric, LoginFilter.UsernameFilterGMail

public abstract class LoginFilter
extends Object
implements InputFilter

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

Nested Class Summary

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

Nested classes/interfaces inherited from interface android.text.InputFilter

InputFilter.AllCaps, InputFilter.LengthFilter

Constructor Summary

LoginFilter()
Default constructor for LoginFilter doesn't append invalid characters.

LoginFilter(boolean appendInvalid)
Base constructor for LoginFilter

Method Summary

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

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LoginFilter

LoginFilter(boolean appendInvalid)

Base constructor for LoginFilter

Parameters:

appendInvalid - whether or not to append invalid characters.

LoginFilter

LoginFilter()

Default constructor for LoginFilter doesn't append invalid characters.

Method Detail

filter

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.

Specified by:

filter in interface InputFilter

onStart

public void onStart()

Called when we start processing filter.

onInvalidCharacter

public void onInvalidCharacter(char c)

Called whenever we encounter an invalid character.

Parameters:

c - the invalid character

onStop

public void onStop()

Called when we're done processing filter

isAllowed

public abstract boolean isAllowed(char c)

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