question about willAnimationRotate and didRotateFrom, iphone

what having far

code:

-(void)willanimaterotationtointerfaceorientation:(uiinterfaceorientation)tointerfaceorientation duration:(nstimeinterval)duration  {            nslog(@"willanimaterotationtointerfaceorientation");      if(tointerfaceorientation == uiinterfaceorientationportraitupsidedown) {           nslog(@"portraitupsidedown");           // method      }      else {          [[self.view subviews] makeobjectsperformselector:@selector(removefromsuperview)];          // method b                }  }

and

code:

- (void)didrotatefrominterfaceorientation:(uiinterfaceorientation)frominterfaceorientation  {      nslog(@"didrotatefrominterfaceorientation");      if( frominterfaceorientation == uiinterfaceorientationportrait || frominterfaceorientation == uiinterfaceorientationportraitupsidedown) {          nslog(@"orientationportrait or portraitupsidedown");          [[self.view subviews] makeobjectsperformselector:@selector(removefromsuperview)];          // method b      }      else {           nslog(@"from else");          [[self.view subviews] makeobjectsperformselector:@selector(removefromsuperview)];          // method                }  }

my logic after hitting run xcode, willanimaterotationtointerfaceorientation going called because set supported device orientation upsidedown summary of myapp.xcodeproj.moreover, think didrotatefrominterfaceorientation should not called because have started app yet. means there no previous state @ all.
unfortunately, got after doing debugger

code:

2012-02-11 12:04:08.776 myapp[7505:10703] willanimaterotationtointerfaceorientation :  2012-02-11 12:04:08.776 myapp[7505:10703] portraitupsidedown  2012-02-11 12:04:08.778 myapp[7505:10703] didrotatefrominterfaceorientation :  2012-02-11 12:04:08.779 myapp[7505:10703] orientationportrait or portraitupsidedown

i getting lost now. have ideas issue, please help. thanks.

 

apps start in same interface orientation springboard. on iphone or ipod touch, uiinterfaceorientationportrait. thus, if have device positioned upside down, app starts in portrait , root view controller receives orientation change window becomes visible.

 

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