How to set content size of UIScrollView dynamically

Question

I got question about UIScrollview.

The story is I have a UIView named ChartsView which I re-draw it myself by override method drawRec

Answer 1

Try this -

- (void)viewDidLoad
    {
        [super viewDidLoad];

// not this way. it's fixed size.....
        ChartsView *chartsView = [[ChartsView alloc]initWithFrame:CGRectMake(0, 0, 320, 800)]; 

        //self.scrollView.contentSize = chartsView.frame.size;
        [self.scrollView setContentSize:CGSizeMake(chartsView.frame.size.width, chartsView.frame.size.height)];
        [self.scrollView addSubview:chartsView];

    }