iOS 11 volumu block not work

[supergithuber]

when volume reach to max, upblock doesn't work
when volume reach to min, downblock doesn't work

[supergithuber]

i solve the problem
audiosession doesn't call willchange and didchange whitch call observevalueforkey, so it will no call upblock and downblock, because of the precision
so i change the maxVolume to 0.9f and minVolume to 0.1f, it works

[supergithuber]

MPVolumeView is placed far away, did you call setsystemvolume before MPVolumeView's frame is set?

[rsimenok]

I had the same issue.