i developing push notificacftion system gcm. have seen notifications dissappear after x seconds.
how can make them permanent until users clicks or close it?
you can use time_to_live parameter, specify maximum lifespan of message. value of parameter must duration 0 2,419,200 seconds, , corresponds maximum period of time gcm store , try deliver message.
check documentation know different parameters can set in gcm.
also,check link , so question more information.
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