请大侠指教uiviewcontroller中添加了scrollview来实现多屏显示的的问题

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil

{

    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];

    if (self) {

        // Custom initialization

        

        

        UIBarButtonItem *leftButton = [[UIBarButtonItem alloc] initWithTitle:@"Back" style:UIBarButtonItemStylePlain target:self action:@selector(backButtonClick)];

        self.navigationItem.leftBarButtonItem = leftButton;

        [leftButton release];

        

        isFreshInitSelf = TRUE;

        if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {

            scrollPagesCount = 4;

        }

        else

        {

            scrollPagesCount = 7;

        }

    }

    return self;

}

- (void)viewDidLoad

{

    [super viewDidLoad];

    scrollView.backgroundColor = [UIColor clearColor];

    self.view.backgroundColor = [UIColor clearColor];    

    

    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {

        leftTableView  = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, LEFTMENU_VIEW_WIDTH, CGRectGetHeight(self.view.bounds))];

        leftTableView.autoresizingMask = UIViewAutoresizingFlexibleHeight;

        leftTableView.backgroundColor = [UIColor clearColor];

        leftTableView.rowHeight = 120;

        NSString *imageName = @"bg_left_menunav.png";

        if (CGRectGetWidth(self.view.bounds) > 768) {

            imageName = @"bg_left_menunav_landscape.png";

        }

        UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, LEFTMENU_VIEW_WIDTH, CGRectGetHeight(self.view.bounds))];    

        imageView.image = [UIImage imageNamed:imageName];

        imageView.autoresizingMask = UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleLeftMargin|UIViewAutoresizingFlexibleRightMargin;

        [leftTableView addSubview:imageView];

        

        

        [imageView release];

        [self.view addSubview:leftTableView];

    }

 

}

-(void)viewWillAppear:(BOOL)animated

{

    [super viewWillAppear:animated];

    if (isFreshInitSelf == TRUE) {

        CGRect rect;

        if (scrollPagesCount == 1) {

            if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {

                rect = self.view.frame;

                rect.origin.x += 200;

                rect.size.width -= 200;                        

                scrollView.frame=rect;

            }

        }

            

        [self setupScheduleScrollPage];//分屏显示，不知是否有问题，请大侠指教～～

        isFreshInitSelf = FALSE;

    

    }else {

        

        [self setScheduleScrollViewSubViewsLayoutForRotation];

        

    }

}

-(void)viewDidAppear:(BOOL)animated

{

    [super viewDidAppear:animated];

}

- (void)viewDidUnload

{

    [scrollView release];

    [leftTableView release];

    [rightTableView release];

    

    [super viewDidUnload];

    // Release any retained subviews of the main view.

    // e.g. self.myOutlet = nil;

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

    // Return YES for supported orientations

     return [[MiraclePushClientAppDelegate getApp] allowAutoScreen];

}

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation {

    

    [self setScheduleScrollViewSubViewsLayoutForRotation];

    

}

#pragma UIScrollViewDelegate

- (void)scrollViewDidScroll:(UIScrollView *)_scrollView

{

    if (pageControlIsChangingPage) {

        return;

    }

    

    /*

     *    We switch page at 50% across

     */

    CGFloat pageWidth = _scrollView.frame.size.width;

    

    int page = floor((_scrollView.contentOffset.x - pageWidth / 2) / pageWidth) + 1;
//由于最左侧去掉了一个200宽度的一个空间，scrollview只占用的568的宽度，可是此处的_scrollView.contentOffset.x 一直是768（实际是否为568）为什么
？？

    currentPageNum = page;

    

}

- (void)scrollViewDidEndDecelerating:(UIScrollView *)_scrollView

{

    pageControlIsChangingPage = NO;

}

- (void) backButtonClick

{

   

    [MiraclePushClientAppDelegate getApp].rootController.scheduleViewScroller = nil;

    [[self navigationController] popViewControllerAnimated:YES];

    

    //add 09-13

    [[MiraclePushClientAppDelegate getApp].rootController.mainViewScrollerController sendReqToGetMenuInfoData];

}

//分屏显示以及设置scrollView有问题？？？？

-(void)setupScheduleScrollPage

{

   

    if (scrollView.delegate == nil) {

        

        scrollView.delegate = self;

        

        [scrollView setBackgroundColor:[UIColor clearColor]];

        [scrollView setCanCancelContentTouches:NO];

        

        scrollView.indicatorStyle = UIScrollViewIndicatorStyleWhite;

        scrollView.clipsToBounds = YES;

        scrollView.scrollEnabled = YES;

        scrollView.pagingEnabled = YES;

    }

 

    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {

        CGFloat tableViewWidth = self.view.bounds.size.width - 200;

        CGFloat tableViewHeight = self.view.bounds.size.height;

        

        NSInteger cx = 200;

        for (NSInteger i=0; i< scrollPagesCount ; i++) {

            CGRect frame = CGRectMake(cx, 0, tableViewWidth, tableViewHeight);

            UIView *tv = [[UIView alloc] initWithFrame:frame];

           

            UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 200, 100)];

            NSString *str = [[NSString alloc] initWithFormat:@"View%d", i];

            label.text = str;

            [tv addSubview:label];

            [label release];

            

            [scrollView addSubview:tv];

            [tv release];        

            tv = nil;

     

            cx += frame.size.width;

        }

        scrollView.frame = self.view.frame;

       

        [scrollView setContentSize:CGSizeMake(cx, [scrollView bounds].size.height)];

    }

    else

    {

        CGFloat tableViewWidth = self.view.bounds.size.width;

        CGFloat tableViewHeight = self.view.bounds.size.height;

        

        NSInteger cx = 0;

        for (NSInteger i=0; i<scrollPagesCount ; i++) {

            

            CGRect rect = CGRectMake(cx, 0, tableViewWidth, tableViewHeight);

            UIView *tv = [[UIView alloc] initWithFrame:rect];

            UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10, 10, 200, 100)];

            NSString *str = [[NSString alloc] initWithFormat:@"View%d", i];

            label.text = str;

            [tv addSubview:label];

            [label release];

            

   

            [scrollView addSubview:tv];

            [tv release];        

            tv = nil;

            

            cx += rect.size.width;

        }

        scrollView.frame = self.view.frame;

        [scrollView setContentSize:CGSizeMake(cx, [scrollView bounds].size.height)];

        

    }

}

- (void)setScheduleScrollViewSubViewsLayoutForRotation {

    

    for(UIView *subview in [scrollView subviews]) {

        [subview removeFromSuperview];

    }

        

    [self setupScheduleScrollPage];

    

    CGRect frame = scrollView.frame;

    frame.origin.x = frame.size.width * currentPageNum;

    frame.origin.y = 0;

    [scrollView scrollRectToVisible:frame animated:YES];

    

}