ios - UIView transitionFromView -

i'm pretty new on ios programming. , i'm stuck @ (i'm sure) simple issue. don't know i'm doing wrong...

-my viewdidload:

[super viewdidload];  cgrect frame = cgrectmake(0, 0, 768, 1024); uiview *uno=[[[uiview alloc] initwithframe:frame] autorelease]; uiimageview *mainview = [[[uiimageview alloc] initwithframe:frame] autorelease]; mainview.image = [uiimage imagenamed:@"photo.jpg"]; [uno addsubview:mainview];  uiview *dos=[[[uiview alloc] initwithframe:frame] autorelease]; uiimageview *mainviewdos = [[[uiimageview alloc] initwithframe:frame] autorelease]; mainviewdos.image = [uiimage imagenamed:@"default.png"]; [dos addsubview:mainviewdos]; // [self.view addsubview:uno]; // [self anima:uno:dos]; 

and anima method:

-(void) anima:(uiview *)uno:(uiview *)dos{     [uiview transitionfromview:uno                         toview:dos                       duration:2.0                        options:uiviewanimationoptiontransitionflipfromleft                     completion:nil]; } 

it changes view without transition...

thanks

you can't perform animation within viewdidload--the view changes make in there executed before view displayed, you're seeing.

are trying show animation when view first displayed? if so, can work putting animation on timer. note approach, you'll have refactor anima method bit take single argument.

in viewdidload:

nsdictionary *views = [nsdictionary dictionarywithobjectsandkeys:uno, @"uno", dos, @"dos", nil]; [self performselector:@selector(anima) withobject:views afterdelay:0.1]; 

then change anima method to:

-(void) anima:(nsdictionary *)views {   [uiview transitionfromview:[views objectforkey:@"uno"]                       toview:[views objectforkey:@"dos"]                     duration:2.0                      options:uiviewanimationoptiontransitionflipfromleft                   completion:nil]; }