Wednesday, April 28, 2010

Support VibraSeq patterns in your app!

I've just released a nice step sequencer app for your phone vibrator. It is a lot of fun to play with it and it can also export the "pattern" as a short string. (see the export menu in the app)

Install VibraSeq now:


If you want to support VibraSeq patterns in your own call manager / SMS manager app (like ChompSMS, etc...), you only have to let the user to paste VibraSeq patterns into a text box somewhere in your app (around the place where you're letting the user to choose from simple vibrator patterns already).

You can parse and play the VibraSeq patterns very easily. See this example code and build in support now ;)

   //plays the given VibraSeq pattern looped forever
   private void playVibraSeqPattern(String vibraSeqPattern) {
       //parse the VibrsSeq pattern into a long array
       long[] pattern = parseVibraSeqPattern(vibraSeqPattern);
       //get the vibrator instance
       Vibrator vibrator =
       //play the pattern in a loop forever
       vibrator.vibrate(pattern, 0);

   //returns the Vibrator.vibrate() compatible long array
   private long[] parseVibraSeqPattern(String vibraSeqPattern)
       try {
           String[] strarr = vibraSeqPattern.split(",");
           int cnt = strarr.length;
           long[] result = new long[cnt];
           for (int a=0;a<cnt;a++) {
               result[a] = Long.parseLong(strarr[a], 16);
           return result;
       } catch (NumberFormatException e) {
           return null;