android - How can I correctly pass unique extras to a pending intent? -

i'm having problem alarmmanager , pending intent extras go along it.

if set multiple alarms, go off, extras stay same.

i have read these questions:

• android pending intent notification problem
• android keeps caching intents extras, how declare pending intent keeps fresh extras?

and have tried:

• assigning unique id each pending intent ,
• using pending intent flags,

all no avail. have no clue why not work.

here code snippet:

intent intent = new intent(con,                     appointmentnotificationreciever.class);             intent.putextra("foo", bar.tostring());               int id = randomnum;              pendingintent sender = pendingintent.getbroadcast(con, id,                     intent, pendingintent.flag_update_current);               alarmmanager = (alarmmanager) con.getsystemservice(context.alarm_service);             am.set(alarmmanager.rtc_wakeup, scheduleexecution, sender); 

possibly 2 different issues here:

1) if you've created pendingintent before , "matches" existing pendingintent, must specify pendingintent.flag_update_current flag or not pass extras. "match" based on criteria intent.filterequals() uses, read docs there , make sure understand data, action, type, etc.

2) i've read if not set action on intent, not propagate extras, perhaps try intent.setaction("com.blah.action").