Do not update notification if count has not changed

[hssm]

Originally reported on Google Code with ID 620

Currently, the notification of due cards is updated even if the number of cards has
not changed.
We should store the last shown count and update it only if it has changed.

Reported by flerda on 2011-05-05 06:23:46

[hssm]

Reported by nicolas.raoul on 2011-08-30 02:13:35

• Labels removed: Milestone-Release0.7

[hssm]

Did you mean a cache for the deck counts? Is it really necessary?

Reported by perceptualchaos2 on 2015-06-01 05:20:39

[wchristian]

Yes please, this is needed, since otherwise notifications relentlessly buzz again and again on every notification update, even when the app itself is open, despite a lack of changes.

[mikehardy]

#4944 - related to notifications work I'm doing now - notifications should go away while the app is open, and when it closes they should maybe go back once but without vibration if the user didn't clear the counts.