uiview - iOS - Why setting and displaying subviews in initWithNibName doesn't work? -

uiview - iOS - Why setting and displaying subviews in initWithNibName doesn't work? -

i have simple xib file layout is:

which pale greenish uiview referenced iboutlet view_content in uiviewcontroller class. did next in initwithnibname:bundle: of viewcontroller.m:

self = [super initwithnibname:nibnameornil bundle:nil]; if (self) { self.view_a = [[uiview alloc] initwithframe:cgrectmake(100, 100, 100, 100)]; self.view_a.backgroundcolor = [uicolor purplecolor]; [self.view_content addsubview:self.view_a]; self.view_b = [[uiview alloc] initwithframe:cgrectmake(150, 150, 100, 100)]; self.view_b.backgroundcolor = [uicolor bluecolor]; [self.view_content addsubview:self.view_b]; self.view_c = [[uiview alloc] initwithframe:cgrectmake(200, 200, 100, 100)]; self.view_c.backgroundcolor = [uicolor greencolor]; [self.view_content addsubview:self.view_c]; } homecoming self;

i expected there 3 little squares, each different colors declared in code above, did not show view loaded , showed. instead if move addsubview: calls viewdidload, displayed expected. tried test if view_content nil in if-segment , seems nil @ time. don't understands why happening , how works, isn't view , components supposed loaded xib?

thanks help!

at point initwithnibname:... called, view not yet loaded. optimization (lazy loading) defers loading view until needed. view loaded when viewcontroller.view first-time accessed, , that's when viewdidload called.

some people forcefulness view controler load view calling [viewcontroller view] (or [self view] if it's within view controller's class).

ios uiview interface-builder xib