iphone - How Do I Switch Views With PageControl & UIScrollView? -

i'm noob iphone development (3rd day in xcode) , trying implement pagecontrol , scrollview users can swipe between various pages. i'm using this tutorial , can't figure out how load/switch views nib files opposed changing background color of view. appreciated.

my code

modification of pagecontrolexampleviewcontroller.m renamed newsclass2

// creates color list first time method invoked. returns 1 color object list. + (uicolor *)pagecontrolcolorwithindex:(nsuinteger)index { if (__pagecontrolcolorlist == nil) {     __pagecontrolcolorlist = [[nsarray alloc] initwithobjects:[uicolor redcolor], [uicolor greencolor], [uicolor magentacolor],                               [uicolor bluecolor], [uicolor orangecolor], [uicolor browncolor], [uicolor graycolor], nil]; } // mod index list length ensure access remains in bounds. return [__pagecontrolcolorlist objectatindex:index % [__pagecontrolcolorlist count]]; }  //changing views instead of colors, not working + (uiview *)pagecontrolviewwithindex:(nsuinteger)index { if (__pagecontrolviewrlist == nil) {     __pagecontrolviewrlist = [[nsarray alloc] initwithobjects:[[uiview alloc] initwithnibname:@"pageview" bundle:nil], [[uiview alloc] initwithnibname:@"pageview" bundle:nil], [[uiview alloc] initwithnibname:@"pageview" bundle:nil],                               [[uiview alloc] initwithnibname:@"pageview" bundle:nil], [[uiview alloc] initwithnibname:@"pageview" bundle:nil], [[uiview alloc] initwithnibname:@"pageview" bundle:nil], [[uiview alloc] initwithnibname:@"pageview" bundle:nil], nil]; } // mod index list length ensure access remains in bounds. return [__pagecontrolviewlist objectatindex:index % [__pagecontrolviewlist count]]; }  // set label , background color when view has finished loading. - (void)viewdidload { pagenumberlabel.text = [nsstring stringwithformat:@"page %d", pagenumber + 1]; self.view.backgroundcolor = [newsclass2 pagecontrolcolorwithindex:pagenumber]; //setting view not working self.view = [newsclass2 pagecontrolviewwithindex:pagenumber]; } 

welcome objective c.

first of need set delegate of scroll view like

//in .h file write  @interface viewcontroller : uiviewcontroller<uiscrollviewdelegate>    // in viewdidload  self.scrollview.delegate = self; 

then write in delegate method of uiscrollview write...

-(void)scrollviewdidscroll:(uiscrollview *)scrollview {     cgfloat pagewidth = scrollview.frame.size.width;     int page = floor((scrollview.contentoffset.x - pagewidth / 2) / pagewidth) + 1;     self.pagecontrol.currentpage = page; } 

then make ibaction of valuechange pagecontrol .....

- (ibaction)changepage:(id)sender {     int page = self.pagecontrolhelp.currentpage;     cgrect frame = self.scrollviewhelp.frame;     frame.origin.x = frame.size.width * page;     frame.origin.y = 0;     [self.scrollviewhelp scrollrecttovisible:frame animated:yes]; } 

and have done .......

if have confusion please feel free ask......