keypress event in android

when i press the only character button a to z to perform some action in android what is key ascii code for a t开发者_StackOverflow中文版o z can anybody tell how to do in android?

here is the whole list of keycodes on android. Don't use the int. Use the static value of KeyEvent. http://developer.android.com/reference/android/view/KeyEvent.html

in the activity you can overwrite one of the following (or more if you like)

boolean onKeyDown(int keyCode, KeyEvent event)
boolean onKeyLongPress(int keyCode, KeyEvent event)
boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event)
boolean onKeyUp(int keyCode, KeyEvent event)

and in there you can just do:

if (event.getKeyCode() == KeyEvent.KEYCODE_A) {
    // do whatever you want.
}

instead of KeyEvent.KEYCODE_A use whatever you want. For example KeyEvent.KEYCODE_BACK for the back key.