CODEWITHSUNDEEP
iphoneiosobjective-cuiscrollviewuipagecontrol
Steaphann
Steaphann

Reputation: 2777

Scroll to position in UIScrollView

I have a UIViewController which contains several UITableViews. You can swipe through the UITableViews using a pagecontrol.

Now in another UIViewController you can navigate to a certain UITableView. I do it as following. In my prepareForSegue in the viewController I set a pageNumber. Then In my other UIViewController I am doing this.

-(void)jumpToPage:(NSNumber *)page{
    NSLog(@"jump to page");
    float offset=30;
    float height = self.scrollView.bounds.size.height;
    float width = 320 - (2*offset);
    int pagee = [page intValue] - 1;
    float x  = (320 * pagee) + offset;

    NSLog(@"X is %f",x);
    [self.scrollView scrollRectToVisible:CGRectMake(x, 0, width , height) animated:NO];

}

This is causing that my UIScrollView is not scrollable anymore. I don't know if it is important but this is what I'm doing in my viewWillAppear

    -(void)viewWillAppear:(BOOL)animated{
        // Set up the content size of the scroll view
        CGSize pagesScrollViewSize = self.scrollView.frame.size;
        self.scrollView.contentSize = CGSizeMake(pagesScrollViewSize.width * self.pageStages.count, pagesScrollViewSize.height);
        [self loadVisiblePages];
        [self updateDay];

}

Can anybody help me with this??

EDIT

I've added this at the end of the jumpToPage method

   NSLog(@"content size is %d",320 * self.pageStages.count);
    self.scrollView.contentSize = CGSizeMake(320 * self.pageStages.count, self.scrollView.bounds.size.height);

But this has still no effect.

Upvotes: 2

Views: 7331

Answers (2)

Vivek Sehrawat
Vivek Sehrawat

Reputation: 6570

You can set frames according to ur needs and it will animate to next view with page control 

 [scrollview scrollRectToVisible:CGRectMake(320,  80,320, 350) animated:YES];

Upvotes: 7

Prathamesh Saraf
Prathamesh Saraf

Reputation: 699

The content size of the scroll view should be greater than the scroll view frame.If there is no content beyond the frame scroll view won't scroll.

Hence you can try increase the height of the content size (for vertical scrolls) and vice-versa for horizontal.

If You observe in your viewWillAppear the content height is the same as the scroll frame.I suspect this might affect the vertical scroll.

Hope this helps

Upvotes: 0

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