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added in API level 1

PasswordTransformationMethod

public class PasswordTransformationMethod
extends Object implements TransformationMethod, TextWatcher

java.lang.Object
   ↳ android.text.method.PasswordTransformationMethod


Summary

Public constructors

PasswordTransformationMethod()

Public methods

void afterTextChanged(Editable s)

This method is called to notify you that, somewhere within s, the text has been changed.

void beforeTextChanged(CharSequence s, int start, int count, int after)

This method is called to notify you that, within s, the count characters beginning at start are about to be replaced by new text with length after.

static PasswordTransformationMethod getInstance()
CharSequence getTransformation(CharSequence source, View view)

Returns a CharSequence that is a transformation of the source text -- for example, replacing each character with a dot in a password field.

void onFocusChanged(View view, CharSequence sourceText, boolean focused, int direction, Rect previouslyFocusedRect)

This method is called when the TextView that uses this TransformationMethod gains or loses focus.

void onTextChanged(CharSequence s, int start, int before, int count)

This method is called to notify you that, within s, the count characters beginning at start have just replaced old text that had length before.

Inherited methods

Public constructors

PasswordTransformationMethod

added in API level 1
public PasswordTransformationMethod ()

Public methods

afterTextChanged

added in API level 1
public void afterTextChanged (Editable s)

This method is called to notify you that, somewhere within s, the text has been changed. It is legitimate to make further changes to s from this callback, but be careful not to get yourself into an infinite loop, because any changes you make will cause this method to be called again recursively. (You are not told where the change took place because other afterTextChanged() methods may already have made other changes and invalidated the offsets. But if you need to know here, you can use Spannable.setSpan(Object, int, int, int) in onTextChanged(CharSequence, int, int, int) to mark your place and then look up from here where the span ended up.

Parameters
s Editable

beforeTextChanged

added in API level 1
public void beforeTextChanged (CharSequence s, 
                int start, 
                int count, 
                int after)

This method is called to notify you that, within s, the count characters beginning at start are about to be replaced by new text with length after. It is an error to attempt to make changes to s from this callback.

Parameters
s CharSequence

start int

count int

after int

getInstance

added in API level 1
public static PasswordTransformationMethod getInstance ()

Returns
PasswordTransformationMethod

getTransformation

added in API level 1
public CharSequence getTransformation (CharSequence source, 
                View view)

Returns a CharSequence that is a transformation of the source text -- for example, replacing each character with a dot in a password field. Beware that the returned text must be exactly the same length as the source text, and that if the source text is Editable, the returned text must mirror it dynamically instead of doing a one-time copy.

Parameters
source CharSequence

view View

Returns
CharSequence

onFocusChanged

added in API level 1
public void onFocusChanged (View view, 
                CharSequence sourceText, 
                boolean focused, 
                int direction, 
                Rect previouslyFocusedRect)

This method is called when the TextView that uses this TransformationMethod gains or loses focus.

Parameters
view View

sourceText CharSequence

focused boolean

direction int

previouslyFocusedRect Rect

onTextChanged

added in API level 1
public void onTextChanged (CharSequence s, 
                int start, 
                int before, 
                int count)

This method is called to notify you that, within s, the count characters beginning at start have just replaced old text that had length before. It is an error to attempt to make changes to s from this callback.

Parameters
s CharSequence

start int

before int

count int