How to determine which key was pressed on the BlackBerry
What I want : to know when the user pressed the button that has the number "2" on it, for example. I don't care if the Alt or Shift keys were pressed. The user pressed a button and I want to evaluate if this button has a "2" printed on it.
Naturally, if I switch devices, this key will change. On the Bold 9700/9500, this is the "E" key. On pearls, this is the "T" / "Y" key.
I managed to get this to work in what seems to be a workaround by looking at the key code "2" with the ALT button activated and using Keypad.key()
to get the actual button:
// figure out which key the '2' is on:
final int BUTTON_2_KEY = Keypad.key(KeypadUtil.getKeyCode('2', KeypadListener.STATUS_ALT, KeypadUtil.MODE_EN_LOCALE));
protected boolean keyDown(int keycode, int time) {
int key = Keypad.key(keycode);
if ( key == BUTTON_2_KEY ) {
// do something
return true;
}
return super.keyDown(keycode,time);
}
I can't help but wonder if there is a better way to do this. I have looked at the constants defined in KeypadListener
and Keypad
, but I cannot find any constants mapped to the actual buttons on the device.
Will a more experienced BlackBerry developer provide assistance?
Thanks!
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Use keyChar to find the character, but in order to capture regardless of whether the character is set up you will also need to use Keypad.getAltedChar:
public boolean keyChar (char key, int status, int time)
{
if (key == '2' || Keypad.getAltedChar (key) == '2') {
// Do your stuff here.
}
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Instead of keyDown () instead of overriding keyChar (), like this:
public boolean keyChar(char key, int status, int time)
{
switch (key)
{
case Characters.DIGIT_TWO:
//do something
return true;
}
return super.keyChar(key, status, time);
}
The Symbols class gives you access to a known set of symbols
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