android - Share onKeyDown between Preferences and Activity? -

my app allows users change hard keys on it. can choose each key in app preferences , on onkeydown fire action selected user.

i noticed many of test functionality, first set hard key , immediatelly press key corroborate if change in effect. right onkeydown on mainactivity aren't getting right feedback.

for reason want reuse onkeydown in both mainactivity , preferenceactivity. tried extend baseactivity can't work both preferenceactivity , regular one. there way through innheritance? how can it?

you may not able via inheritance since preferenceactivity inherits activity you'd have write 2 classes anyway (which defeats purpose).

you alternatively use mapping transforms keydown event 1 user has set.

public class downkeymapper {  private static map<integer, integer> mkeycodemap;  public static void init(map<integer, integer> pkeymap) {     // init here mappings preferences     mkeycodemap = pkeymap; }  public static void mapkey(int pfromkeycode, int ptokeycode) {     mkeycodemap.put(pfromkeycode, ptokeycode); }  public static int getmappedkey(int pkeycode) {     if (mkeycodemap.containskey(pkeycode)) {         return mkeycodemap.get(mkeycodemap);     } else {         return pkeycode;     } } } 

so in onkeydown you'd use:

    @override public boolean onkeydown(int keycode, keyevent event) {     keycode = downkeymapper.getmappedkey(keycode);     return super.onkeydown(keycode, event); } 

hope helps!