Question

In my view contoller’s viewDidLoad function, I have this guy:

UIScrollView *scroller = [[UIScrollView alloc] initWithFrame:self.view.frame];
scroller.contentSize = self.view.frame.size; // Tried w/ and w/o this
scroller.showsVerticalScrollIndicator = YES; // Tried w/ and w/o this

for (int x = 0; x < 10; x++) {
    UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, x * 100, 100, 100)];
    label.text = [NSString stringWithFormat:@"%i label", x];
    [scroller addSubview:label];
}

[self.view addSubview:scroller];

It shows the first 8 labels OK, but the scroll view won’t… scroll. It is just cut off. Any idea why?

Answer 1

It won’t scroll because your contentSize is only set to the same size as the scrollview itself. The contentSize is the size of the scrollable area that the scrollview acts as a window in to. You need to set it wide enough to actually see your labels.

Based on your current code, your final label is in rect {0, 900, 100, 100}, so your contentSize needs to be at least CGSizeMake(100, 1000).