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Added in API level 1

NumberKeyListener

public abstract class NumberKeyListener
extends BaseKeyListener implements InputFilter

java.lang.Object
   ↳ android.text.method.MetaKeyKeyListener
     ↳ android.text.method.BaseKeyListener
       ↳ android.text.method.NumberKeyListener
Known Direct Subclasses


For numeric text entry

As for all implementations of KeyListener, this class is only concerned with hardware keyboards. Software input methods have no obligation to trigger the methods in this class.

Summary

Inherited constants

From class android.text.method.MetaKeyKeyListener

Public constructors

NumberKeyListener()

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.

boolean onKeyDown(View view, Editable content, int keyCode, KeyEvent event)

Handles presses of the meta keys.

Protected methods

abstract char[] getAcceptedChars()

You can say which characters you can accept.

int lookup(KeyEvent event, Spannable content)
static boolean ok(char[] accept, char c)

Inherited methods

From class android.text.method.BaseKeyListener
From class android.text.method.MetaKeyKeyListener
From class java.lang.Object
From interface android.text.method.KeyListener
From interface android.text.InputFilter

Public constructors

NumberKeyListener

Added in API level 1
NumberKeyListener ()

Public methods

filter

Added in API level 1
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. Return the CharSequence that you would like to have 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. Also beware that you should not attempt to make any changes to dest from this method; you may only examine it for context. Note: If source is an instance of Spanned or Spannable, the span objects in the source should be copied into the filtered result (i.e. the non-null return value). copySpansFrom(Spanned, int, int, Class, Spannable, int) can be used for convenience.

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

onKeyDown

Added in API level 1
boolean onKeyDown (View view, 
                Editable content, 
                int keyCode, 
                KeyEvent event)

Handles presses of the meta keys.

Parameters
view View
content Editable
keyCode int
event KeyEvent
Returns
boolean

Protected methods

getAcceptedChars

Added in API level 1
char[] getAcceptedChars ()

You can say which characters you can accept.

Returns
char[]

lookup

Added in API level 1
int lookup (KeyEvent event, 
                Spannable content)

Parameters
event KeyEvent
content Spannable
Returns
int

ok

Added in API level 1
boolean ok (char[] accept, 
                char c)

Parameters
accept char
c char
Returns
boolean
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