osx - NSViewAnimations used in OS X 10.6 stopped working in OS X 10.9, subsequent animations aren't firing -


i wrote animation code in os x 10.6, animations aren't working when recompile app 10.9.

i've got array of buttons, each of them goal have shrink, return normal size, shrink, , return normal size (to "flex" couple of times). 

nsmutablearray *animations = [nsmutablearray arraywithcapacity:buttons.count];  nsmutablearray *allanimations = [nsmutablearray arraywithcapacity:buttons.count*4];  for(nsbutton *button in buttons) {     // store original frame , generate smaller frame     nsrect originalframe = button.frame;     nsrect smallframe = [self smallrectforrect:originalframe scale:0.9];      // build dictionaries describe animations normal-to-small , vice versa     nsmutabledictionary *normaltosmall = [nsmutabledictionary dictionary];     [normaltosmall setobject:button forkey:nsviewanimationtargetkey];     [normaltosmall setobject:[nsvalue valuewithrect:originalframe] forkey:nsviewanimationstartframekey];     [normaltosmall setobject:[nsvalue valuewithrect:smallframe] forkey:nsviewanimationendframekey];      nsmutabledictionary *smalltonormal = [nsmutabledictionary dictionary];     [smalltonormal setobject:button forkey:nsviewanimationtargetkey];     [smalltonormal setobject:[nsvalue valuewithrect:smallframe] forkey:nsviewanimationstartframekey];     [smalltonormal setobject:[nsvalue valuewithrect:originalframe] forkey:nsviewanimationendframekey];      // create, , chain together, shrink, reset, shrink, reset animation chain     nsviewanimation *animation1 = [self createanimationwithdictionary:normaltosmall duration:duration startingafteranimation:nil];     nsviewanimation *animation2 = [self createanimationwithdictionary:smalltonormal duration:duration startingafteranimation:animation1];     nsviewanimation *animation3 = [self createanimationwithdictionary:normaltosmall duration:duration startingafteranimation:animation2];     nsviewanimation *animation4 = [self createanimationwithdictionary:smalltonormal duration:duration startingafteranimation:animation3];      // store of animations in array in case arc wants release them prematurely.     [allanimations addobjectsfromarray:@[animation1, animation2, animation3, animation4]];      // store first animation, can start each of chains after we're done creating them.     [animations addobject:animation1]; }  // start first animation in each chain (nsviewanimation *animation in animations) {         [animation startanimation]; }

here function used create each of animations:

- (nsviewanimation*) createanimationwithdictionary:(nsdictionary*)animationdictionary duration:(float)duration startingafteranimation:(nsviewanimation*)previousanimation {     nsviewanimation *animation = [[nsviewanimation alloc] initwithviewanimations:[nsarray arraywithobject:animationdictionary]];     [animation setduration:duration];     [animation setdelegate:self];      if (previousanimation != nil) {         [animation startwhenanimation:previousanimation reachesprogress:1.0];     }     return animation; }

i set window controller delegate watch animations start , end , appears first animation in each chain starts , ends. subsequent animations configured -startwhenanimation:reachesprogress:1.0 not appear start @ all.

why won't subsequent animations start running?


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