ios - Providing autorotation support to a subview loaded programmatically - iPad -

i have ipad project structured as: - appdelegate - mainwindow - view controller -- view

the view controllers .m file loads view programmatically , positions on screen. view going slid in , out.

i this:

- (void)viewdidload {     [super viewdidload];      cgrect  viewrect = cgrectmake(0, 0, 0, 0);     calculatorview *v = [[[calculatorview alloc]                                      initwithframe:viewrect] autorelease];     [self.view.window addsubview:v];      [uiview beginanimations:nil context:null];     [uiview setanimationcurve:uiviewanimationcurveeasein];     v.view.frame   = cgrectmake(0, 0, 460, 320);     [uiview commitanimations]; } 

the issue having subview i'm adding here doesnt' seem have correct orientation. project supports landscape, , launches landscape. container view fine, , contains buttons fine well. programmatically loaded view stuck in portrait mode. have provided following auto-rotation code (in loaded view's .m):

- (bool)shouldautorotatetointerfaceorientation:(uiinterfaceorientation)interfaceorientation {     // return yes supported orientations     return (interfaceorientation == uiinterfaceorientationlandscapeleft || interfaceorientation == uiinterfaceorientationlandscaperight); } 

but never gets called.

so, how can programmatically added subview load in landscape , not portrait mode? tia!

the uiview class not receive orientation change messages.

(specially shouldautorotatetointerfaceorientation method, uiviewcontroller method)

http://developer.apple.com/library/ios/#documentation/uikit/reference/uiviewcontroller_class/reference/reference.html#//apple_ref/doc/uid/tp40006926-ch3-sw23

you have manually add method in view inform orientation has changed , should call method in controller shouldautorotatetointerfaceorientation method.

to have create reference view in controller , take care of memory yourself.

@interface mycontroller : uiviewcontroller {     calculatorview *_calculatorview;  }  @end  @implementation mycontroller   - (void)viewdidload {     [super viewdidload];      cgrect  viewrect = cgrectmake(0, 0, 0, 0);     //inits _calculatorview without autorelease. released in dealloc method     _calculatorview = [[calculatorview alloc]                                      initwithframe:viewrect];     [self.view.window addsubview:v];      [uiview beginanimations:nil context:null];     [uiview setanimationcurve:uiviewanimationcurveeasein];     _calculatorview.view.frame   = cgrectmake(0, 0, 460, 320);     [uiview commitanimations]; }  - (bool)shouldautorotatetointerfaceorientation:(uiinterfaceorientation)interfaceorientation {    //calls custom interface orientation method    [_calculatorview myinterfacechangedcustommethod:interfaceorientation];      // return yes supported orientations     return (interfaceorientation == uiinterfaceorientationlandscapeleft || interfaceorientation == uiinterfaceorientationlandscaperight); }  -(void) dealloc {      [_calculatorview release];    [super dealloc]; }    @end 

edit: if calculatorview simple , need change frame after device rotation, think best approach using view's autoresizingmask similar following

_calculatorview = [[calculatorview alloc]                                      initwithframe:viewrect]; _calculatorview.autoresizingmask = uiviewautoresizingflexiblewidth | uiviewautoresizingflexibleheight;