IT. Expert System.

All Known Implementing Classes:

BaseKeyListener, DateKeyListener, DateTimeKeyListener, DialerKeyListener, DigitsKeyListener, MultiTapKeyListener, NumberKeyListener, QwertyKeyListener, TextKeyListener, TimeKeyListener

public interface KeyListener

• Method Summary

  Methods

  Modifier and Type	Method and Description
  void	clearMetaKeyState(View view, Editable content, int states) Remove the given shift states from the edited text.
  int	getInputType() Return the type of text that this key listener is manipulating, as per InputType.
  boolean	onKeyDown(View view, Editable text, int keyCode, KeyEvent event) If the key listener wants to handle this key, return true, otherwise return false and the caller (i.e.
  boolean	onKeyOther(View view, Editable text, KeyEvent event) If the key listener wants to other kinds of key events, return true, otherwise return false and the caller (i.e.
  boolean	onKeyUp(View view, Editable text, int keyCode, KeyEvent event) If the key listener wants to handle this key release, return true, otherwise return false and the caller (i.e.

• Method Detail

  • getInputType

    int getInputType()

    Return the type of text that this key listener is manipulating, as per InputType. This is used to determine the mode of the soft keyboard that is shown for the editor.

    If you return 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.

  • onKeyDown

    boolean onKeyDown(View view,
                    Editable text,
                    int keyCode,
                    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.

  • onKeyUp

    boolean onKeyUp(View view,
                  Editable text,
                  int keyCode,
                  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.

  • onKeyOther

    boolean onKeyOther(View view,
                     Editable text,
                     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.

  • clearMetaKeyState

    void clearMetaKeyState(View view,
                         Editable content,
                         int states)

    Remove the given shift states from the edited text.