ios - How does UIProgressView get information on animation duration? -

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i'm working on circular progress view , it's working quite cool. i'd make more flexible, user use normal uiprogressview paired nstimer. cannot figure how make equivalent of: setprogress:(float)progress animated:(bool)animated? i'm testing hardcoded values , durations it's animating nicely, surely can somehow achieved inform on exact duration value?

got camediatimingfunction put inside method updating cgpath

if (self.continuous) { cabasicanimation *animation = [cabasicanimation animationwithkeypath:@"strokeend"]; //animation.duration = 0.5; animation.fromvalue = [nsnumber numberwithfloat:prevvalue]; animation.tovalue = [nsnumber numberwithfloat:_value]; animation.removedoncompletion = no; animation.fillmode = kcafillmodeforwards; animation.timingfunction = [camediatimingfunction functionwithname:kcamediatimingfunctioneaseout]; [self.progresslayer addanimation:animation forkey:@"strokeendanimation"]; }


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