KeyListenerpublic interface KeyListener | Interface for converting text key events into edit operations on an
Editable class. Note that for most cases this interface has been
superceded by general soft input methods as defined by
{@link android.view.inputmethod.InputMethod}; it should only be used
for cases where an application has its own on-screen keypad and also wants
to process hard keyboard events to match it.
Key presses on soft input methods are not required to trigger the methods
in this listener, and are in fact discouraged to do so. The default
android keyboard will not trigger these for any key to any application
targetting Jelly Bean or later, and will only deliver it for some
key presses to applications targetting Ice Cream Sandwich or earlier. |
| Methods Summary |
|---|
| public void | clearMetaKeyState(android.view.View view, android.text.Editable content, int states)Remove the given shift states from the edited text.
| | public int | getInputType()Return the type of text that this key listener is manipulating,
as per {@link android.text.InputType}. This is used to
determine the mode of the soft keyboard that is shown for the editor.
If you return
{@link android.text.InputType#TYPE_NULL}
then no soft keyboard will provided. In other words, you
must be providing your own key pad for on-screen input and the key
listener will be used to handle input from a hard keyboard.
If you
return any other value, a soft input method will be created when the
user puts focus in the editor, which will provide a keypad and also
consume hard key events. This means that the key listener will generally
not be used, instead the soft input method will take care of managing
key input as per the content type returned here.
| | public boolean | onKeyDown(android.view.View view, android.text.Editable text, int keyCode, android.view.KeyEvent event)If the key listener wants to handle this key, return true,
otherwise return false and the caller (i.e. the widget host)
will handle the key.
| | public boolean | onKeyOther(android.view.View view, android.text.Editable text, android.view.KeyEvent event)If the key listener wants to other kinds of key events, return true,
otherwise return false and the caller (i.e. the widget host)
will handle the key.
| | public boolean | onKeyUp(android.view.View view, android.text.Editable text, int keyCode, android.view.KeyEvent event)If the key listener wants to handle this key release, return true,
otherwise return false and the caller (i.e. the widget host)
will handle the key.
|
|
